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-rw-r--r--platforms/chibios/_timer.h19
-rw-r--r--platforms/chibios/_wait.c89
-rw-r--r--platforms/chibios/_wait.h60
-rw-r--r--platforms/chibios/atomic_util.h37
-rw-r--r--platforms/chibios/boards/BLACKPILL_STM32_F401/configs/mcuconf.h71
-rw-r--r--platforms/chibios/boards/BLACKPILL_STM32_F411/configs/mcuconf.h65
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_F405XG/board/board.mk9
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_F405XG/configs/board.h28
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_F405XG/configs/config.h23
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_F405XG/configs/mcuconf.h352
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_F407XE/configs/mcuconf.h3
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_F446XE/configs/mcuconf.h108
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_G431XB/configs/mcuconf.h15
-rw-r--r--platforms/chibios/boards/GENERIC_STM32_G474XE/configs/mcuconf.h15
-rw-r--r--platforms/chibios/boards/QMK_PROTON_C/configs/chconf.h2
-rw-r--r--platforms/chibios/boards/QMK_PROTON_C/configs/config.h9
-rw-r--r--platforms/chibios/boards/SIPEED_LONGAN_NANO/board/board.mk9
-rw-r--r--platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/chconf.h23
-rw-r--r--platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/mcuconf.h302
-rw-r--r--platforms/chibios/boards/common/configs/chconf.h2
-rw-r--r--platforms/chibios/boards/common/ld/STM32F401xC.ld85
-rw-r--r--platforms/chibios/boards/common/ld/STM32F401xE.ld85
-rw-r--r--platforms/chibios/boards/common/ld/STM32F405xG.ld86
-rw-r--r--platforms/chibios/boards/common/ld/STM32F411xE.ld85
-rw-r--r--platforms/chibios/bootloader.c145
-rw-r--r--platforms/chibios/chibios_config.h78
-rw-r--r--platforms/chibios/drivers/analog.c8
-rw-r--r--platforms/chibios/drivers/audio_dac.h126
-rw-r--r--platforms/chibios/drivers/audio_dac_additive.c335
-rw-r--r--platforms/chibios/drivers/audio_dac_basic.c245
-rw-r--r--platforms/chibios/drivers/audio_pwm.h40
-rw-r--r--platforms/chibios/drivers/audio_pwm_hardware.c144
-rw-r--r--platforms/chibios/drivers/audio_pwm_software.c164
-rw-r--r--platforms/chibios/drivers/i2c_master.c37
-rw-r--r--platforms/chibios/drivers/i2c_master.h27
-rw-r--r--platforms/chibios/drivers/ps2/ps2_io.c55
-rw-r--r--platforms/chibios/drivers/serial.c2
-rw-r--r--platforms/chibios/drivers/serial_usart.c10
-rw-r--r--platforms/chibios/drivers/spi_master.c31
-rw-r--r--platforms/chibios/drivers/spi_master.h6
-rw-r--r--platforms/chibios/drivers/uart.c16
-rw-r--r--platforms/chibios/drivers/uart.h8
-rw-r--r--platforms/chibios/drivers/ws2812.c4
-rw-r--r--platforms/chibios/drivers/ws2812_pwm.c48
-rw-r--r--platforms/chibios/drivers/ws2812_spi.c27
-rw-r--r--platforms/chibios/eeprom_stm32.c687
-rw-r--r--platforms/chibios/eeprom_stm32.h33
-rw-r--r--platforms/chibios/eeprom_stm32_defs.h74
-rw-r--r--platforms/chibios/eeprom_teensy.c795
-rw-r--r--platforms/chibios/flash.mk2
-rw-r--r--platforms/chibios/flash_stm32.c208
-rw-r--r--platforms/chibios/flash_stm32.h44
-rw-r--r--platforms/chibios/gd32v_compatibility.h120
-rw-r--r--platforms/chibios/gpio.h50
-rw-r--r--platforms/chibios/pin_defs.h323
-rw-r--r--platforms/chibios/platform.c22
-rw-r--r--platforms/chibios/platform.mk439
-rw-r--r--platforms/chibios/platform_deps.h19
-rw-r--r--platforms/chibios/sleep_led.c192
-rw-r--r--platforms/chibios/suspend.c92
-rw-r--r--platforms/chibios/syscall-fallbacks.c111
-rw-r--r--platforms/chibios/timer.c47
-rw-r--r--platforms/chibios/wait.c41
63 files changed, 6239 insertions, 198 deletions
diff --git a/platforms/chibios/_timer.h b/platforms/chibios/_timer.h
new file mode 100644
index 0000000000..77402b612a
--- /dev/null
+++ b/platforms/chibios/_timer.h
@@ -0,0 +1,19 @@
+/* Copyright 2021 Simon Arlott
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+// The platform is 32-bit, so prefer 32-bit timers to avoid overflow
+#define FAST_TIMER_T_SIZE 32
diff --git a/platforms/chibios/_wait.c b/platforms/chibios/_wait.c
new file mode 100644
index 0000000000..1fbea2dd5e
--- /dev/null
+++ b/platforms/chibios/_wait.c
@@ -0,0 +1,89 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __OPTIMIZE__
+# pragma message "Compiler optimizations disabled; wait_cpuclock() won't work as designed"
+#endif
+
+#define CLOCK_DELAY_NOP8 "nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t nop\n\t"
+
+__attribute__((always_inline)) static inline void wait_cpuclock(unsigned int n) { /* n: 1..135 */
+ /* The argument n must be a constant expression.
+ * That way, compiler optimization will remove unnecessary code. */
+ if (n < 1) {
+ return;
+ }
+ if (n > 8) {
+ unsigned int n8 = n / 8;
+ n = n - n8 * 8;
+ switch (n8) {
+ case 16:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 15:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 14:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 13:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 12:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 11:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 10:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 9:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 8:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 7:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 6:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 5:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 4:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 3:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 2:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 1:
+ asm volatile(CLOCK_DELAY_NOP8::: "memory");
+ case 0:
+ break;
+ }
+ }
+ switch (n) {
+ case 8:
+ asm volatile("nop" ::: "memory");
+ case 7:
+ asm volatile("nop" ::: "memory");
+ case 6:
+ asm volatile("nop" ::: "memory");
+ case 5:
+ asm volatile("nop" ::: "memory");
+ case 4:
+ asm volatile("nop" ::: "memory");
+ case 3:
+ asm volatile("nop" ::: "memory");
+ case 2:
+ asm volatile("nop" ::: "memory");
+ case 1:
+ asm volatile("nop" ::: "memory");
+ case 0:
+ break;
+ }
+}
diff --git a/platforms/chibios/_wait.h b/platforms/chibios/_wait.h
new file mode 100644
index 0000000000..2f36c64a2e
--- /dev/null
+++ b/platforms/chibios/_wait.h
@@ -0,0 +1,60 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <ch.h>
+#include <hal.h>
+
+/* chThdSleepX of zero maps to infinite - so we map to a tiny delay to still yield */
+#define wait_ms(ms) \
+ do { \
+ if (ms != 0) { \
+ chThdSleepMilliseconds(ms); \
+ } else { \
+ chThdSleepMicroseconds(1); \
+ } \
+ } while (0)
+
+#ifdef WAIT_US_TIMER
+void wait_us(uint16_t duration);
+#else
+# define wait_us(us) \
+ do { \
+ if (us != 0) { \
+ chThdSleepMicroseconds(us); \
+ } else { \
+ chThdSleepMicroseconds(1); \
+ } \
+ } while (0)
+#endif
+
+#include "_wait.c"
+
+/* For GPIOs on ARM-based MCUs, the input pins are sampled by the clock of the bus
+ * to which the GPIO is connected.
+ * The connected buses differ depending on the various series of MCUs.
+ * And since the instruction execution clock of the CPU and the bus clock of GPIO are different,
+ * there is a delay of several clocks to read the change of the input signal.
+ *
+ * Define this delay with the GPIO_INPUT_PIN_DELAY macro.
+ * If the GPIO_INPUT_PIN_DELAY macro is not defined, the following default values will be used.
+ * (A fairly large value of 0.25 microseconds is set.)
+ */
+#ifndef GPIO_INPUT_PIN_DELAY
+# define GPIO_INPUT_PIN_DELAY (CPU_CLOCK / 1000000L / 4)
+#endif
+
+#define waitInputPinDelay() wait_cpuclock(GPIO_INPUT_PIN_DELAY)
diff --git a/platforms/chibios/atomic_util.h b/platforms/chibios/atomic_util.h
new file mode 100644
index 0000000000..8975045153
--- /dev/null
+++ b/platforms/chibios/atomic_util.h
@@ -0,0 +1,37 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <ch.h>
+
+static __inline__ uint8_t __interrupt_disable__(void) {
+ chSysLock();
+
+ return 1;
+}
+
+static __inline__ void __interrupt_enable__(const uint8_t *__s) {
+ chSysUnlock();
+
+ __asm__ volatile("" ::: "memory");
+ (void)__s;
+}
+
+#define ATOMIC_BLOCK(type) for (type, __ToDo = __interrupt_disable__(); __ToDo; __ToDo = 0)
+#define ATOMIC_FORCEON uint8_t sreg_save __attribute__((__cleanup__(__interrupt_enable__))) = 0
+
+#define ATOMIC_BLOCK_RESTORESTATE _Static_assert(0, "ATOMIC_BLOCK_RESTORESTATE not implemented")
+#define ATOMIC_BLOCK_FORCEON ATOMIC_BLOCK(ATOMIC_FORCEON)
diff --git a/platforms/chibios/boards/BLACKPILL_STM32_F401/configs/mcuconf.h b/platforms/chibios/boards/BLACKPILL_STM32_F401/configs/mcuconf.h
index ba6e934fe7..a21fd7bd12 100644
--- a/platforms/chibios/boards/BLACKPILL_STM32_F401/configs/mcuconf.h
+++ b/platforms/chibios/boards/BLACKPILL_STM32_F401/configs/mcuconf.h
@@ -1,5 +1,5 @@
/*
- ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+ ChibiOS - Copyright (C) 2006..2020 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -32,11 +32,15 @@
*/
#define STM32F4xx_MCUCONF
+#define STM32F401_MCUCONF
/*
* HAL driver system settings.
*/
#define STM32_NO_INIT FALSE
+#define STM32_PVD_ENABLE FALSE
+#define STM32_PLS STM32_PLS_LEV0
+#define STM32_BKPRAM_ENABLE FALSE
#define STM32_HSI_ENABLED TRUE
#define STM32_LSI_ENABLED TRUE
#define STM32_HSE_ENABLED TRUE
@@ -44,13 +48,13 @@
#define STM32_CLOCK48_REQUIRED TRUE
#define STM32_SW STM32_SW_PLL
#define STM32_PLLSRC STM32_PLLSRC_HSE
-#define STM32_PLLM_VALUE 25
-#define STM32_PLLN_VALUE 336
-#define STM32_PLLP_VALUE 4
-#define STM32_PLLQ_VALUE 7
-#define STM32_HPRE STM32_HPRE_DIV1
-#define STM32_PPRE1 STM32_PPRE1_DIV4
-#define STM32_PPRE2 STM32_PPRE2_DIV2
+#define STM32_PLLM_VALUE 25
+#define STM32_PLLN_VALUE 336
+#define STM32_PLLP_VALUE 4
+#define STM32_PLLQ_VALUE 7
+#define STM32_HPRE STM32_HPRE_DIV1
+#define STM32_PPRE1 STM32_PPRE1_DIV4
+#define STM32_PPRE2 STM32_PPRE2_DIV2
#define STM32_RTCSEL STM32_RTCSEL_LSI
#define STM32_RTCPRE_VALUE 8
#define STM32_MCO1SEL STM32_MCO1SEL_HSI
@@ -60,9 +64,6 @@
#define STM32_I2SSRC STM32_I2SSRC_CKIN
#define STM32_PLLI2SN_VALUE 192
#define STM32_PLLI2SR_VALUE 5
-#define STM32_PVD_ENABLE FALSE
-#define STM32_PLS STM32_PLS_LEV0
-#define STM32_BKPRAM_ENABLE FALSE
/*
* IRQ system settings.
@@ -82,6 +83,19 @@
#define STM32_IRQ_EXTI21_PRIORITY 15
#define STM32_IRQ_EXTI22_PRIORITY 15
+#define STM32_IRQ_TIM1_BRK_TIM9_PRIORITY 7
+#define STM32_IRQ_TIM1_UP_TIM10_PRIORITY 7
+#define STM32_IRQ_TIM1_TRGCO_TIM11_PRIORITY 7
+#define STM32_IRQ_TIM1_CC_PRIORITY 7
+#define STM32_IRQ_TIM2_PRIORITY 7
+#define STM32_IRQ_TIM3_PRIORITY 7
+#define STM32_IRQ_TIM4_PRIORITY 7
+#define STM32_IRQ_TIM5_PRIORITY 7
+
+#define STM32_IRQ_USART1_PRIORITY 12
+#define STM32_IRQ_USART2_PRIORITY 12
+#define STM32_IRQ_USART6_PRIORITY 12
+
/*
* ADC driver system settings.
*/
@@ -101,14 +115,8 @@
#define STM32_GPT_USE_TIM4 FALSE
#define STM32_GPT_USE_TIM5 FALSE
#define STM32_GPT_USE_TIM9 FALSE
+#define STM32_GPT_USE_TIM10 FALSE
#define STM32_GPT_USE_TIM11 FALSE
-#define STM32_GPT_TIM1_IRQ_PRIORITY 7
-#define STM32_GPT_TIM2_IRQ_PRIORITY 7
-#define STM32_GPT_TIM3_IRQ_PRIORITY 7
-#define STM32_GPT_TIM4_IRQ_PRIORITY 7
-#define STM32_GPT_TIM5_IRQ_PRIORITY 7
-#define STM32_GPT_TIM9_IRQ_PRIORITY 7
-#define STM32_GPT_TIM11_IRQ_PRIORITY 7
/*
* I2C driver system settings.
@@ -155,29 +163,20 @@
#define STM32_ICU_USE_TIM4 FALSE
#define STM32_ICU_USE_TIM5 FALSE
#define STM32_ICU_USE_TIM9 FALSE
-#define STM32_ICU_TIM1_IRQ_PRIORITY 7
-#define STM32_ICU_TIM2_IRQ_PRIORITY 7
-#define STM32_ICU_TIM3_IRQ_PRIORITY 7
-#define STM32_ICU_TIM4_IRQ_PRIORITY 7
-#define STM32_ICU_TIM5_IRQ_PRIORITY 7
-#define STM32_ICU_TIM9_IRQ_PRIORITY 7
+#define STM32_ICU_USE_TIM10 FALSE
+#define STM32_ICU_USE_TIM11 FALSE
/*
* PWM driver system settings.
*/
-#define STM32_PWM_USE_ADVANCED FALSE
#define STM32_PWM_USE_TIM1 FALSE
#define STM32_PWM_USE_TIM2 FALSE
#define STM32_PWM_USE_TIM3 FALSE
#define STM32_PWM_USE_TIM4 FALSE
#define STM32_PWM_USE_TIM5 FALSE
#define STM32_PWM_USE_TIM9 FALSE
-#define STM32_PWM_TIM1_IRQ_PRIORITY 7
-#define STM32_PWM_TIM2_IRQ_PRIORITY 7
-#define STM32_PWM_TIM3_IRQ_PRIORITY 7
-#define STM32_PWM_TIM4_IRQ_PRIORITY 7
-#define STM32_PWM_TIM5_IRQ_PRIORITY 7
-#define STM32_PWM_TIM9_IRQ_PRIORITY 7
+#define STM32_PWM_USE_TIM10 FALSE
+#define STM32_PWM_USE_TIM11 FALSE
/*
* SERIAL driver system settings.
@@ -185,9 +184,6 @@
#define STM32_SERIAL_USE_USART1 FALSE
#define STM32_SERIAL_USE_USART2 FALSE
#define STM32_SERIAL_USE_USART6 FALSE
-#define STM32_SERIAL_USART1_PRIORITY 12
-#define STM32_SERIAL_USART2_PRIORITY 12
-#define STM32_SERIAL_USART6_PRIORITY 12
/*
* SPI driver system settings.
@@ -227,9 +223,6 @@
#define STM32_UART_USART2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 6)
#define STM32_UART_USART6_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 2)
#define STM32_UART_USART6_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 7)
-#define STM32_UART_USART1_IRQ_PRIORITY 12
-#define STM32_UART_USART2_IRQ_PRIORITY 12
-#define STM32_UART_USART6_IRQ_PRIORITY 12
#define STM32_UART_USART1_DMA_PRIORITY 0
#define STM32_UART_USART2_DMA_PRIORITY 0
#define STM32_UART_USART6_DMA_PRIORITY 0
@@ -241,9 +234,7 @@
#define STM32_USB_USE_OTG1 TRUE
#define STM32_USB_OTG1_IRQ_PRIORITY 14
#define STM32_USB_OTG1_RX_FIFO_SIZE 512
-#define STM32_USB_OTG_THREAD_PRIO NORMALPRIO+1
-#define STM32_USB_OTG_THREAD_STACK_SIZE 128
-#define STM32_USB_OTGFIFO_FILL_BASEPRI 0
+#define STM32_USB_HOST_WAKEUP_DURATION 2
/*
* WDG driver system settings.
diff --git a/platforms/chibios/boards/BLACKPILL_STM32_F411/configs/mcuconf.h b/platforms/chibios/boards/BLACKPILL_STM32_F411/configs/mcuconf.h
index 0394ff56bb..131c847661 100644
--- a/platforms/chibios/boards/BLACKPILL_STM32_F411/configs/mcuconf.h
+++ b/platforms/chibios/boards/BLACKPILL_STM32_F411/configs/mcuconf.h
@@ -1,5 +1,5 @@
/*
- ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+ ChibiOS - Copyright (C) 2006..2020 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -32,11 +32,15 @@
*/
#define STM32F4xx_MCUCONF
+#define STM32F411_MCUCONF
/*
* HAL driver system settings.
*/
#define STM32_NO_INIT FALSE
+#define STM32_PVD_ENABLE FALSE
+#define STM32_PLS STM32_PLS_LEV0
+#define STM32_BKPRAM_ENABLE FALSE
#define STM32_HSI_ENABLED TRUE
#define STM32_LSI_ENABLED TRUE
#define STM32_HSE_ENABLED TRUE
@@ -60,9 +64,6 @@
#define STM32_I2SSRC STM32_I2SSRC_CKIN
#define STM32_PLLI2SN_VALUE 192
#define STM32_PLLI2SR_VALUE 5
-#define STM32_PVD_ENABLE FALSE
-#define STM32_PLS STM32_PLS_LEV0
-#define STM32_BKPRAM_ENABLE FALSE
/*
* IRQ system settings.
@@ -82,6 +83,19 @@
#define STM32_IRQ_EXTI21_PRIORITY 15
#define STM32_IRQ_EXTI22_PRIORITY 15
+#define STM32_IRQ_TIM1_BRK_TIM9_PRIORITY 7
+#define STM32_IRQ_TIM1_UP_TIM10_PRIORITY 7
+#define STM32_IRQ_TIM1_TRGCO_TIM11_PRIORITY 7
+#define STM32_IRQ_TIM1_CC_PRIORITY 7
+#define STM32_IRQ_TIM2_PRIORITY 7
+#define STM32_IRQ_TIM3_PRIORITY 7
+#define STM32_IRQ_TIM4_PRIORITY 7
+#define STM32_IRQ_TIM5_PRIORITY 7
+
+#define STM32_IRQ_USART1_PRIORITY 12
+#define STM32_IRQ_USART2_PRIORITY 12
+#define STM32_IRQ_USART6_PRIORITY 12
+
/*
* ADC driver system settings.
*/
@@ -101,14 +115,8 @@
#define STM32_GPT_USE_TIM4 FALSE
#define STM32_GPT_USE_TIM5 FALSE
#define STM32_GPT_USE_TIM9 FALSE
+#define STM32_GPT_USE_TIM10 FALSE
#define STM32_GPT_USE_TIM11 FALSE
-#define STM32_GPT_TIM1_IRQ_PRIORITY 7
-#define STM32_GPT_TIM2_IRQ_PRIORITY 7
-#define STM32_GPT_TIM3_IRQ_PRIORITY 7
-#define STM32_GPT_TIM4_IRQ_PRIORITY 7
-#define STM32_GPT_TIM5_IRQ_PRIORITY 7
-#define STM32_GPT_TIM9_IRQ_PRIORITY 7
-#define STM32_GPT_TIM11_IRQ_PRIORITY 7
/*
* I2C driver system settings.
@@ -155,29 +163,28 @@
#define STM32_ICU_USE_TIM4 FALSE
#define STM32_ICU_USE_TIM5 FALSE
#define STM32_ICU_USE_TIM9 FALSE
-#define STM32_ICU_TIM1_IRQ_PRIORITY 7
-#define STM32_ICU_TIM2_IRQ_PRIORITY 7
-#define STM32_ICU_TIM3_IRQ_PRIORITY 7
-#define STM32_ICU_TIM4_IRQ_PRIORITY 7
-#define STM32_ICU_TIM5_IRQ_PRIORITY 7
-#define STM32_ICU_TIM9_IRQ_PRIORITY 7
+#define STM32_ICU_USE_TIM10 FALSE
+#define STM32_ICU_USE_TIM11 FALSE
/*
* PWM driver system settings.
*/
-#define STM32_PWM_USE_ADVANCED FALSE
#define STM32_PWM_USE_TIM1 FALSE
#define STM32_PWM_USE_TIM2 FALSE
#define STM32_PWM_USE_TIM3 FALSE
#define STM32_PWM_USE_TIM4 FALSE
#define STM32_PWM_USE_TIM5 FALSE
#define STM32_PWM_USE_TIM9 FALSE
-#define STM32_PWM_TIM1_IRQ_PRIORITY 7
-#define STM32_PWM_TIM2_IRQ_PRIORITY 7
-#define STM32_PWM_TIM3_IRQ_PRIORITY 7
-#define STM32_PWM_TIM4_IRQ_PRIORITY 7
-#define STM32_PWM_TIM5_IRQ_PRIORITY 7
-#define STM32_PWM_TIM9_IRQ_PRIORITY 7
+#define STM32_PWM_USE_TIM10 FALSE
+#define STM32_PWM_USE_TIM11 FALSE
+
+/*
+ * RTC driver system settings.
+ */
+#define STM32_RTC_PRESA_VALUE 32
+#define STM32_RTC_PRESS_VALUE 1024
+#define STM32_RTC_CR_INIT 0
+#define STM32_RTC_TAMPCR_INIT 0
/*
* SERIAL driver system settings.
@@ -185,9 +192,6 @@
#define STM32_SERIAL_USE_USART1 FALSE
#define STM32_SERIAL_USE_USART2 FALSE
#define STM32_SERIAL_USE_USART6 FALSE
-#define STM32_SERIAL_USART1_PRIORITY 12
-#define STM32_SERIAL_USART2_PRIORITY 12
-#define STM32_SERIAL_USART6_PRIORITY 12
/*
* SPI driver system settings.
@@ -227,9 +231,6 @@
#define STM32_UART_USART2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 6)
#define STM32_UART_USART6_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 2)
#define STM32_UART_USART6_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 7)
-#define STM32_UART_USART1_IRQ_PRIORITY 12
-#define STM32_UART_USART2_IRQ_PRIORITY 12
-#define STM32_UART_USART6_IRQ_PRIORITY 12
#define STM32_UART_USART1_DMA_PRIORITY 0
#define STM32_UART_USART2_DMA_PRIORITY 0
#define STM32_UART_USART6_DMA_PRIORITY 0
@@ -241,9 +242,7 @@
#define STM32_USB_USE_OTG1 TRUE
#define STM32_USB_OTG1_IRQ_PRIORITY 14
#define STM32_USB_OTG1_RX_FIFO_SIZE 512
-#define STM32_USB_OTG_THREAD_PRIO NORMALPRIO+1
-#define STM32_USB_OTG_THREAD_STACK_SIZE 128
-#define STM32_USB_OTGFIFO_FILL_BASEPRI 0
+#define STM32_USB_HOST_WAKEUP_DURATION 2
/*
* WDG driver system settings.
diff --git a/platforms/chibios/boards/GENERIC_STM32_F405XG/board/board.mk b/platforms/chibios/boards/GENERIC_STM32_F405XG/board/board.mk
new file mode 100644
index 0000000000..6c837bb8ee
--- /dev/null
+++ b/platforms/chibios/boards/GENERIC_STM32_F405XG/board/board.mk
@@ -0,0 +1,9 @@
+# List of all the board related files.
+BOARDSRC = $(CHIBIOS)/os/hal/boards/ST_STM32F4_DISCOVERY/board.c
+
+# Required include directories
+BOARDINC = $(CHIBIOS)/os/hal/boards/ST_STM32F4_DISCOVERY
+
+# Shared variables
+ALLCSRC += $(BOARDSRC)
+ALLINC += $(BOARDINC) \ No newline at end of file
diff --git a/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/board.h b/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/board.h
new file mode 100644
index 0000000000..8cb771bc12
--- /dev/null
+++ b/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/board.h
@@ -0,0 +1,28 @@
+/* Copyright 2020 Nick Brassel (tzarc)
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#define STM32_HSECLK 12000000
+// The following is required to disable the pull-down on PA9, when PA9 is used for the keyboard matrix:
+#define BOARD_OTG_NOVBUSSENS
+
+#include_next "board.h"
+
+#undef STM32_HSE_BYPASS
+
+#undef STM32F407xx
+#define STM32F405xG
+#define STM32F405xx
diff --git a/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/config.h b/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/config.h
new file mode 100644
index 0000000000..cc52a953ed
--- /dev/null
+++ b/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/config.h
@@ -0,0 +1,23 @@
+/* Copyright 2021 Andrei Purdea
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* Address for jumping to bootloader on STM32 chips. */
+/* It is chip dependent, the correct number can be looked up by checking against ST's application note AN2606.
+ */
+#define STM32_BOOTLOADER_ADDRESS 0x1FFF0000
+#ifndef EARLY_INIT_PERFORM_BOOTLOADER_JUMP
+# define EARLY_INIT_PERFORM_BOOTLOADER_JUMP TRUE
+#endif
diff --git a/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/mcuconf.h b/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/mcuconf.h
new file mode 100644
index 0000000000..908a580a91
--- /dev/null
+++ b/platforms/chibios/boards/GENERIC_STM32_F405XG/configs/mcuconf.h
@@ -0,0 +1,352 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#ifndef MCUCONF_H
+#define MCUCONF_H
+
+/*
+ * STM32F4xx drivers configuration.
+ * The following settings override the default settings present in
+ * the various device driver implementation headers.
+ * Note that the settings for each driver only have effect if the whole
+ * driver is enabled in halconf.h.
+ *
+ * IRQ priorities:
+ * 15...0 Lowest...Highest.
+ *
+ * DMA priorities:
+ * 0...3 Lowest...Highest.
+ */
+
+#define STM32F4xx_MCUCONF
+#define STM32F405_MCUCONF
+#define STM32F415_MCUCONF
+#define STM32F407_MCUCONF
+#define STM32F417_MCUCONF
+
+/*
+ * HAL driver system settings.
+ */
+#define STM32_NO_INIT FALSE
+#define STM32_PVD_ENABLE FALSE
+#define STM32_PLS STM32_PLS_LEV0
+#define STM32_BKPRAM_ENABLE FALSE
+#define STM32_HSI_ENABLED TRUE
+#define STM32_LSI_ENABLED TRUE
+#define STM32_HSE_ENABLED TRUE
+#define STM32_LSE_ENABLED FALSE
+#define STM32_CLOCK48_REQUIRED TRUE
+#define STM32_SW STM32_SW_PLL
+#define STM32_PLLSRC STM32_PLLSRC_HSE
+#define STM32_PLLM_VALUE 12
+#define STM32_PLLN_VALUE 336
+#define STM32_PLLP_VALUE 2
+#define STM32_PLLQ_VALUE 7
+#define STM32_HPRE STM32_HPRE_DIV1
+#define STM32_PPRE1 STM32_PPRE1_DIV4
+#define STM32_PPRE2 STM32_PPRE2_DIV2
+#define STM32_RTCSEL STM32_RTCSEL_LSI
+#define STM32_RTCPRE_VALUE 8
+#define STM32_MCO1SEL STM32_MCO1SEL_HSI
+#define STM32_MCO1PRE STM32_MCO1PRE_DIV1
+#define STM32_MCO2SEL STM32_MCO2SEL_SYSCLK
+#define STM32_MCO2PRE STM32_MCO2PRE_DIV5
+#define STM32_I2SSRC STM32_I2SSRC_CKIN
+#define STM32_PLLI2SN_VALUE 192
+#define STM32_PLLI2SR_VALUE 5
+
+/*
+ * IRQ system settings.
+ */
+#define STM32_IRQ_EXTI0_PRIORITY 6
+#define STM32_IRQ_EXTI1_PRIORITY 6
+#define STM32_IRQ_EXTI2_PRIORITY 6
+#define STM32_IRQ_EXTI3_PRIORITY 6
+#define STM32_IRQ_EXTI4_PRIORITY 6
+#define STM32_IRQ_EXTI5_9_PRIORITY 6
+#define STM32_IRQ_EXTI10_15_PRIORITY 6
+#define STM32_IRQ_EXTI16_PRIORITY 6
+#define STM32_IRQ_EXTI17_PRIORITY 15
+#define STM32_IRQ_EXTI18_PRIORITY 6
+#define STM32_IRQ_EXTI19_PRIORITY 6
+#define STM32_IRQ_EXTI20_PRIORITY 6
+#define STM32_IRQ_EXTI21_PRIORITY 15
+#define STM32_IRQ_EXTI22_PRIORITY 15
+
+/*
+ * ADC driver system settings.
+ */
+#define STM32_ADC_ADCPRE ADC_CCR_ADCPRE_DIV4
+#define STM32_ADC_USE_ADC1 FALSE
+#define STM32_ADC_USE_ADC2 FALSE
+#define STM32_ADC_USE_ADC3 FALSE
+#define STM32_ADC_ADC1_DMA_STREAM STM32_DMA_STREAM_ID(2, 4)
+#define STM32_ADC_ADC2_DMA_STREAM STM32_DMA_STREAM_ID(2, 2)
+#define STM32_ADC_ADC3_DMA_STREAM STM32_DMA_STREAM_ID(2, 1)
+#define STM32_ADC_ADC1_DMA_PRIORITY 2
+#define STM32_ADC_ADC2_DMA_PRIORITY 2
+#define STM32_ADC_ADC3_DMA_PRIORITY 2
+#define STM32_ADC_IRQ_PRIORITY 6
+#define STM32_ADC_ADC1_DMA_IRQ_PRIORITY 6
+#define STM32_ADC_ADC2_DMA_IRQ_PRIORITY 6
+#define STM32_ADC_ADC3_DMA_IRQ_PRIORITY 6
+
+/*
+ * CAN driver system settings.
+ */
+#define STM32_CAN_USE_CAN1 FALSE
+#define STM32_CAN_USE_CAN2 FALSE
+#define STM32_CAN_CAN1_IRQ_PRIORITY 11
+#define STM32_CAN_CAN2_IRQ_PRIORITY 11
+
+/*
+ * DAC driver system settings.
+ */
+#define STM32_DAC_DUAL_MODE FALSE
+#define STM32_DAC_USE_DAC1_CH1 FALSE
+#define STM32_DAC_USE_DAC1_CH2 FALSE
+#define STM32_DAC_DAC1_CH1_IRQ_PRIORITY 10
+#define STM32_DAC_DAC1_CH2_IRQ_PRIORITY 10
+#define STM32_DAC_DAC1_CH1_DMA_PRIORITY 2
+#define STM32_DAC_DAC1_CH2_DMA_PRIORITY 2
+#define STM32_DAC_DAC1_CH1_DMA_STREAM STM32_DMA_STREAM_ID(1, 5)
+#define STM32_DAC_DAC1_CH2_DMA_STREAM STM32_DMA_STREAM_ID(1, 6)
+
+/*
+ * GPT driver system settings.
+ */
+#define STM32_GPT_USE_TIM1 FALSE
+#define STM32_GPT_USE_TIM2 FALSE
+#define STM32_GPT_USE_TIM3 FALSE
+#define STM32_GPT_USE_TIM4 FALSE
+#define STM32_GPT_USE_TIM5 FALSE
+#define STM32_GPT_USE_TIM6 FALSE
+#define STM32_GPT_USE_TIM7 FALSE
+#define STM32_GPT_USE_TIM8 FALSE
+#define STM32_GPT_USE_TIM9 FALSE
+#define STM32_GPT_USE_TIM11 FALSE
+#define STM32_GPT_USE_TIM12 FALSE
+#define STM32_GPT_USE_TIM14 FALSE
+#define STM32_GPT_TIM1_IRQ_PRIORITY 7
+#define STM32_GPT_TIM2_IRQ_PRIORITY 7
+#define STM32_GPT_TIM3_IRQ_PRIORITY 7
+#define STM32_GPT_TIM4_IRQ_PRIORITY 7
+#define STM32_GPT_TIM5_IRQ_PRIORITY 7
+#define STM32_GPT_TIM6_IRQ_PRIORITY 7
+#define STM32_GPT_TIM7_IRQ_PRIORITY 7
+#define STM32_GPT_TIM8_IRQ_PRIORITY 7
+#define STM32_GPT_TIM9_IRQ_PRIORITY 7
+#define STM32_GPT_TIM11_IRQ_PRIORITY 7
+#define STM32_GPT_TIM12_IRQ_PRIORITY 7
+#define STM32_GPT_TIM14_IRQ_PRIORITY 7
+
+/*
+ * I2C driver system settings.
+ */
+#define STM32_I2C_USE_I2C1 FALSE
+#define STM32_I2C_USE_I2C2 FALSE
+#define STM32_I2C_USE_I2C3 FALSE
+#define STM32_I2C_BUSY_TIMEOUT 50
+#define STM32_I2C_I2C1_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 0)
+#define STM32_I2C_I2C1_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 6)
+#define STM32_I2C_I2C2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 2)
+#define STM32_I2C_I2C2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7)
+#define STM32_I2C_I2C3_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 2)
+#define STM32_I2C_I2C3_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4)
+#define STM32_I2C_I2C1_IRQ_PRIORITY 5
+#define STM32_I2C_I2C2_IRQ_PRIORITY 5
+#define STM32_I2C_I2C3_IRQ_PRIORITY 5
+#define STM32_I2C_I2C1_DMA_PRIORITY 3
+#define STM32_I2C_I2C2_DMA_PRIORITY 3
+#define STM32_I2C_I2C3_DMA_PRIORITY 3
+#define STM32_I2C_DMA_ERROR_HOOK(i2cp) osalSysHalt("DMA failure")
+
+/*
+ * I2S driver system settings.
+ */
+#define STM32_I2S_USE_SPI2 FALSE
+#define STM32_I2S_USE_SPI3 FALSE
+#define STM32_I2S_SPI2_IRQ_PRIORITY 10
+#define STM32_I2S_SPI3_IRQ_PRIORITY 10
+#define STM32_I2S_SPI2_DMA_PRIORITY 1
+#define STM32_I2S_SPI3_DMA_PRIORITY 1
+#define STM32_I2S_SPI2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 3)
+#define STM32_I2S_SPI2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4)
+#define STM32_I2S_SPI3_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 0)
+#define STM32_I2S_SPI3_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7)
+#define STM32_I2S_DMA_ERROR_HOOK(i2sp) osalSysHalt("DMA failure")
+
+/*
+ * ICU driver system settings.
+ */
+#define STM32_ICU_USE_TIM1 FALSE
+#define STM32_ICU_USE_TIM2 FALSE
+#define STM32_ICU_USE_TIM3 FALSE
+#define STM32_ICU_USE_TIM4 FALSE
+#define STM32_ICU_USE_TIM5 FALSE
+#define STM32_ICU_USE_TIM8 FALSE
+#define STM32_ICU_USE_TIM9 FALSE
+#define STM32_ICU_TIM1_IRQ_PRIORITY 7
+#define STM32_ICU_TIM2_IRQ_PRIORITY 7
+#define STM32_ICU_TIM3_IRQ_PRIORITY 7
+#define STM32_ICU_TIM4_IRQ_PRIORITY 7
+#define STM32_ICU_TIM5_IRQ_PRIORITY 7
+#define STM32_ICU_TIM8_IRQ_PRIORITY 7
+#define STM32_ICU_TIM9_IRQ_PRIORITY 7
+
+/*
+ * MAC driver system settings.
+ */
+#define STM32_MAC_TRANSMIT_BUFFERS 2
+#define STM32_MAC_RECEIVE_BUFFERS 4
+#define STM32_MAC_BUFFERS_SIZE 1522
+#define STM32_MAC_PHY_TIMEOUT 100
+#define STM32_MAC_ETH1_CHANGE_PHY_STATE TRUE
+#define STM32_MAC_ETH1_IRQ_PRIORITY 13
+#define STM32_MAC_IP_CHECKSUM_OFFLOAD 0
+
+/*
+ * PWM driver system settings.
+ */
+#define STM32_PWM_USE_ADVANCED FALSE
+#define STM32_PWM_USE_TIM1 FALSE
+#define STM32_PWM_USE_TIM2 FALSE
+#define STM32_PWM_USE_TIM3 FALSE
+#define STM32_PWM_USE_TIM4 FALSE
+#define STM32_PWM_USE_TIM5 FALSE
+#define STM32_PWM_USE_TIM8 FALSE
+#define STM32_PWM_USE_TIM9 FALSE
+#define STM32_PWM_TIM1_IRQ_PRIORITY 7
+#define STM32_PWM_TIM2_IRQ_PRIORITY 7
+#define STM32_PWM_TIM3_IRQ_PRIORITY 7
+#define STM32_PWM_TIM4_IRQ_PRIORITY 7
+#define STM32_PWM_TIM5_IRQ_PRIORITY 7
+#define STM32_PWM_TIM8_IRQ_PRIORITY 7
+#define STM32_PWM_TIM9_IRQ_PRIORITY 7
+
+/*
+ * RTC driver system settings.
+ */
+#define STM32_RTC_PRESA_VALUE 32
+#define STM32_RTC_PRESS_VALUE 1024
+#define STM32_RTC_CR_INIT 0
+#define STM32_RTC_TAMPCR_INIT 0
+
+/*
+ * SDC driver system settings.
+ */
+#define STM32_SDC_SDIO_DMA_PRIORITY 3
+#define STM32_SDC_SDIO_IRQ_PRIORITY 9
+#define STM32_SDC_WRITE_TIMEOUT_MS 1000
+#define STM32_SDC_READ_TIMEOUT_MS 1000
+#define STM32_SDC_CLOCK_ACTIVATION_DELAY 10
+#define STM32_SDC_SDIO_UNALIGNED_SUPPORT TRUE
+#define STM32_SDC_SDIO_DMA_STREAM STM32_DMA_STREAM_ID(2, 3)
+
+/*
+ * SERIAL driver system settings.
+ */
+#define STM32_SERIAL_USE_USART1 FALSE
+#define STM32_SERIAL_USE_USART2 FALSE
+#define STM32_SERIAL_USE_USART3 FALSE
+#define STM32_SERIAL_USE_UART4 FALSE
+#define STM32_SERIAL_USE_UART5 FALSE
+#define STM32_SERIAL_USE_USART6 FALSE
+#define STM32_SERIAL_USART1_PRIORITY 12
+#define STM32_SERIAL_USART2_PRIORITY 12
+#define STM32_SERIAL_USART3_PRIORITY 12
+#define STM32_SERIAL_UART4_PRIORITY 12
+#define STM32_SERIAL_UART5_PRIORITY 12
+#define STM32_SERIAL_USART6_PRIORITY 12
+
+/*
+ * SPI driver system settings.
+ */
+#define STM32_SPI_USE_SPI1 FALSE
+#define STM32_SPI_USE_SPI2 FALSE
+#define STM32_SPI_USE_SPI3 FALSE
+#define STM32_SPI_SPI1_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 0)
+#define STM32_SPI_SPI1_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 3)
+#define STM32_SPI_SPI2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 3)
+#define STM32_SPI_SPI2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4)
+#define STM32_SPI_SPI3_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 0)
+#define STM32_SPI_SPI3_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7)
+#define STM32_SPI_SPI1_DMA_PRIORITY 1
+#define STM32_SPI_SPI2_DMA_PRIORITY 1
+#define STM32_SPI_SPI3_DMA_PRIORITY 1
+#define STM32_SPI_SPI1_IRQ_PRIORITY 10
+#define STM32_SPI_SPI2_IRQ_PRIORITY 10
+#define STM32_SPI_SPI3_IRQ_PRIORITY 10
+#define STM32_SPI_DMA_ERROR_HOOK(spip) osalSysHalt("DMA failure")
+
+/*
+ * ST driver system settings.
+ */
+#define STM32_ST_IRQ_PRIORITY 8
+#define STM32_ST_USE_TIMER 2
+
+/*
+ * UART driver system settings.
+ */
+#define STM32_UART_USE_USART1 FALSE
+#define STM32_UART_USE_USART2 FALSE
+#define STM32_UART_USE_USART3 FALSE
+#define STM32_UART_USE_UART4 FALSE
+#define STM32_UART_USE_UART5 FALSE
+#define STM32_UART_USE_USART6 FALSE
+#define STM32_UART_USART1_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 5)
+#define STM32_UART_USART1_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 7)
+#define STM32_UART_USART2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 5)
+#define STM32_UART_USART2_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 6)
+#define STM32_UART_USART3_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 1)
+#define STM32_UART_USART3_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 3)
+#define STM32_UART_UART4_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 2)
+#define STM32_UART_UART4_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 4)
+#define STM32_UART_UART5_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 0)
+#define STM32_UART_UART5_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7)
+#define STM32_UART_USART6_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 2)
+#define STM32_UART_USART6_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 7)
+#define STM32_UART_USART1_IRQ_PRIORITY 12
+#define STM32_UART_USART2_IRQ_PRIORITY 12
+#define STM32_UART_USART3_IRQ_PRIORITY 12
+#define STM32_UART_UART4_IRQ_PRIORITY 12
+#define STM32_UART_UART5_IRQ_PRIORITY 12
+#define STM32_UART_USART6_IRQ_PRIORITY 12
+#define STM32_UART_USART1_DMA_PRIORITY 0
+#define STM32_UART_USART2_DMA_PRIORITY 0
+#define STM32_UART_USART3_DMA_PRIORITY 0
+#define STM32_UART_UART4_DMA_PRIORITY 0
+#define STM32_UART_UART5_DMA_PRIORITY 0
+#define STM32_UART_USART6_DMA_PRIORITY 0
+#define STM32_UART_DMA_ERROR_HOOK(uartp) osalSysHalt("DMA failure")
+
+/*
+ * USB driver system settings.
+ */
+#define STM32_USB_USE_OTG1 TRUE
+#define STM32_USB_USE_OTG2 FALSE
+#define STM32_USB_OTG1_IRQ_PRIORITY 14
+#define STM32_USB_OTG2_IRQ_PRIORITY 14
+#define STM32_USB_OTG1_RX_FIFO_SIZE 512
+#define STM32_USB_OTG2_RX_FIFO_SIZE 1024
+#define STM32_USB_HOST_WAKEUP_DURATION 2
+
+/*
+ * WDG driver system settings.
+ */
+#define STM32_WDG_USE_IWDG FALSE
+
+#endif /* MCUCONF_H */
diff --git a/platforms/chibios/boards/GENERIC_STM32_F407XE/configs/mcuconf.h b/platforms/chibios/boards/GENERIC_STM32_F407XE/configs/mcuconf.h
index 4be47fe1b0..928ee56c71 100644
--- a/platforms/chibios/boards/GENERIC_STM32_F407XE/configs/mcuconf.h
+++ b/platforms/chibios/boards/GENERIC_STM32_F407XE/configs/mcuconf.h
@@ -344,9 +344,6 @@
#define STM32_USB_OTG2_RX_FIFO_SIZE 1024
#define STM32_USB_HOST_WAKEUP_DURATION 2
-#define STM32_USB_OTG_THREAD_PRIO NORMALPRIO+1
-#define STM32_USB_OTG_THREAD_STACK_SIZE 128
-
/*
* WDG driver system settings.
*/
diff --git a/platforms/chibios/boards/GENERIC_STM32_F446XE/configs/mcuconf.h b/platforms/chibios/boards/GENERIC_STM32_F446XE/configs/mcuconf.h
index d2de75590e..566c146c25 100644
--- a/platforms/chibios/boards/GENERIC_STM32_F446XE/configs/mcuconf.h
+++ b/platforms/chibios/boards/GENERIC_STM32_F446XE/configs/mcuconf.h
@@ -1,5 +1,5 @@
/*
- ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+ ChibiOS - Copyright (C) 2006..2020 Giovanni Di Sirio
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -32,11 +32,15 @@
*/
#define STM32F4xx_MCUCONF
+#define STM32F446_MCUCONF
/*
* HAL driver system settings.
*/
#define STM32_NO_INIT FALSE
+#define STM32_PVD_ENABLE FALSE
+#define STM32_PLS STM32_PLS_LEV0
+#define STM32_BKPRAM_ENABLE FALSE
#define STM32_HSI_ENABLED FALSE
#define STM32_LSI_ENABLED TRUE
#define STM32_HSE_ENABLED TRUE
@@ -70,9 +74,6 @@
#define STM32_SAI1SEL STM32_SAI2SEL_PLLR
#define STM32_SAI2SEL STM32_SAI2SEL_PLLR
#define STM32_CK48MSEL STM32_CK48MSEL_PLLALT
-#define STM32_PVD_ENABLE FALSE
-#define STM32_PLS STM32_PLS_LEV0
-#define STM32_BKPRAM_ENABLE FALSE
/*
* IRQ system settings.
@@ -92,6 +93,30 @@
#define STM32_IRQ_EXTI21_PRIORITY 15
#define STM32_IRQ_EXTI22_PRIORITY 15
+#define STM32_IRQ_TIM1_BRK_TIM9_PRIORITY 7
+#define STM32_IRQ_TIM1_UP_TIM10_PRIORITY 7
+#define STM32_IRQ_TIM1_TRGCO_TIM11_PRIORITY 7
+#define STM32_IRQ_TIM1_CC_PRIORITY 7
+#define STM32_IRQ_TIM2_PRIORITY 7
+#define STM32_IRQ_TIM3_PRIORITY 7
+#define STM32_IRQ_TIM4_PRIORITY 7
+#define STM32_IRQ_TIM5_PRIORITY 7
+#define STM32_IRQ_TIM6_PRIORITY 7
+#define STM32_IRQ_TIM7_PRIORITY 7
+#define STM32_IRQ_TIM8_BRK_TIM12_PRIORITY 7
+#define STM32_IRQ_TIM8_UP_TIM13_PRIORITY 7
+#define STM32_IRQ_TIM8_TRGCO_TIM14_PRIORITY 7
+#define STM32_IRQ_TIM8_CC_PRIORITY 7
+
+#define STM32_IRQ_USART1_PRIORITY 12
+#define STM32_IRQ_USART2_PRIORITY 12
+#define STM32_IRQ_USART3_PRIORITY 12
+#define STM32_IRQ_UART4_PRIORITY 12
+#define STM32_IRQ_UART5_PRIORITY 12
+#define STM32_IRQ_USART6_PRIORITY 12
+#define STM32_IRQ_UART7_PRIORITY 12
+#define STM32_IRQ_UART8_PRIORITY 12
+
/*
* ADC driver system settings.
*/
@@ -143,21 +168,11 @@
#define STM32_GPT_USE_TIM7 FALSE
#define STM32_GPT_USE_TIM8 FALSE
#define STM32_GPT_USE_TIM9 FALSE
+#define STM32_GPT_USE_TIM10 FALSE
#define STM32_GPT_USE_TIM11 FALSE
#define STM32_GPT_USE_TIM12 FALSE
+#define STM32_GPT_USE_TIM13 FALSE
#define STM32_GPT_USE_TIM14 FALSE
-#define STM32_GPT_TIM1_IRQ_PRIORITY 7
-#define STM32_GPT_TIM2_IRQ_PRIORITY 7
-#define STM32_GPT_TIM3_IRQ_PRIORITY 7
-#define STM32_GPT_TIM4_IRQ_PRIORITY 7
-#define STM32_GPT_TIM5_IRQ_PRIORITY 7
-#define STM32_GPT_TIM6_IRQ_PRIORITY 7
-#define STM32_GPT_TIM7_IRQ_PRIORITY 7
-#define STM32_GPT_TIM8_IRQ_PRIORITY 7
-#define STM32_GPT_TIM9_IRQ_PRIORITY 7
-#define STM32_GPT_TIM11_IRQ_PRIORITY 7
-#define STM32_GPT_TIM12_IRQ_PRIORITY 7
-#define STM32_GPT_TIM14_IRQ_PRIORITY 7
/*
* I2C driver system settings.
@@ -205,13 +220,11 @@
#define STM32_ICU_USE_TIM5 FALSE
#define STM32_ICU_USE_TIM8 FALSE
#define STM32_ICU_USE_TIM9 FALSE
-#define STM32_ICU_TIM1_IRQ_PRIORITY 7
-#define STM32_ICU_TIM2_IRQ_PRIORITY 7
-#define STM32_ICU_TIM3_IRQ_PRIORITY 7
-#define STM32_ICU_TIM4_IRQ_PRIORITY 7
-#define STM32_ICU_TIM5_IRQ_PRIORITY 7
-#define STM32_ICU_TIM8_IRQ_PRIORITY 7
-#define STM32_ICU_TIM9_IRQ_PRIORITY 7
+#define STM32_ICU_USE_TIM10 FALSE
+#define STM32_ICU_USE_TIM11 FALSE
+#define STM32_ICU_USE_TIM12 FALSE
+#define STM32_ICU_USE_TIM13 FALSE
+#define STM32_ICU_USE_TIM14 FALSE
/*
* MAC driver system settings.
@@ -227,7 +240,6 @@
/*
* PWM driver system settings.
*/
-#define STM32_PWM_USE_ADVANCED FALSE
#define STM32_PWM_USE_TIM1 FALSE
#define STM32_PWM_USE_TIM2 FALSE
#define STM32_PWM_USE_TIM3 FALSE
@@ -235,13 +247,19 @@
#define STM32_PWM_USE_TIM5 FALSE
#define STM32_PWM_USE_TIM8 FALSE
#define STM32_PWM_USE_TIM9 FALSE
-#define STM32_PWM_TIM1_IRQ_PRIORITY 7
-#define STM32_PWM_TIM2_IRQ_PRIORITY 7
-#define STM32_PWM_TIM3_IRQ_PRIORITY 7
-#define STM32_PWM_TIM4_IRQ_PRIORITY 7
-#define STM32_PWM_TIM5_IRQ_PRIORITY 7
-#define STM32_PWM_TIM8_IRQ_PRIORITY 7
-#define STM32_PWM_TIM9_IRQ_PRIORITY 7
+#define STM32_PWM_USE_TIM10 FALSE
+#define STM32_PWM_USE_TIM11 FALSE
+#define STM32_PWM_USE_TIM12 FALSE
+#define STM32_PWM_USE_TIM13 FALSE
+#define STM32_PWM_USE_TIM14 FALSE
+
+/*
+ * RTC driver system settings.
+ */
+#define STM32_RTC_PRESA_VALUE 32
+#define STM32_RTC_PRESS_VALUE 1024
+#define STM32_RTC_CR_INIT 0
+#define STM32_RTC_TAMPCR_INIT 0
/*
* SDC driver system settings.
@@ -265,14 +283,6 @@
#define STM32_SERIAL_USE_USART6 FALSE
#define STM32_SERIAL_USE_UART7 FALSE
#define STM32_SERIAL_USE_UART8 FALSE
-#define STM32_SERIAL_USART1_PRIORITY 12
-#define STM32_SERIAL_USART2_PRIORITY 12
-#define STM32_SERIAL_USART3_PRIORITY 12
-#define STM32_SERIAL_UART4_PRIORITY 12
-#define STM32_SERIAL_UART5_PRIORITY 12
-#define STM32_SERIAL_USART6_PRIORITY 12
-#define STM32_SERIAL_UART7_PRIORITY 12
-#define STM32_SERIAL_UART8_PRIORITY 12
/*
* SPI driver system settings.
@@ -281,6 +291,8 @@
#define STM32_SPI_USE_SPI2 FALSE
#define STM32_SPI_USE_SPI3 FALSE
#define STM32_SPI_USE_SPI4 FALSE
+#define STM32_SPI_USE_SPI5 FALSE
+#define STM32_SPI_USE_SPI6 FALSE
#define STM32_SPI_SPI1_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 0)
#define STM32_SPI_SPI1_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 3)
#define STM32_SPI_SPI2_RX_DMA_STREAM STM32_DMA_STREAM_ID(1, 3)
@@ -289,14 +301,22 @@
#define STM32_SPI_SPI3_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7)
#define STM32_SPI_SPI4_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 0)
#define STM32_SPI_SPI4_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 1)
+#define STM32_SPI_SPI5_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 3)
+#define STM32_SPI_SPI5_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 4)
+#define STM32_SPI_SPI6_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 6)
+#define STM32_SPI_SPI6_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 5)
#define STM32_SPI_SPI1_DMA_PRIORITY 1
#define STM32_SPI_SPI2_DMA_PRIORITY 1
#define STM32_SPI_SPI3_DMA_PRIORITY 1
#define STM32_SPI_SPI4_DMA_PRIORITY 1
+#define STM32_SPI_SPI5_DMA_PRIORITY 1
+#define STM32_SPI_SPI6_DMA_PRIORITY 1
#define STM32_SPI_SPI1_IRQ_PRIORITY 10
#define STM32_SPI_SPI2_IRQ_PRIORITY 10
#define STM32_SPI_SPI3_IRQ_PRIORITY 10
#define STM32_SPI_SPI4_IRQ_PRIORITY 10
+#define STM32_SPI_SPI5_IRQ_PRIORITY 10
+#define STM32_SPI_SPI6_IRQ_PRIORITY 10
#define STM32_SPI_DMA_ERROR_HOOK(spip) osalSysHalt("DMA failure")
/*
@@ -326,12 +346,6 @@
#define STM32_UART_UART5_TX_DMA_STREAM STM32_DMA_STREAM_ID(1, 7)
#define STM32_UART_USART6_RX_DMA_STREAM STM32_DMA_STREAM_ID(2, 2)
#define STM32_UART_USART6_TX_DMA_STREAM STM32_DMA_STREAM_ID(2, 7)
-#define STM32_UART_USART1_IRQ_PRIORITY 12
-#define STM32_UART_USART2_IRQ_PRIORITY 12
-#define STM32_UART_USART3_IRQ_PRIORITY 12
-#define STM32_UART_UART4_IRQ_PRIORITY 12
-#define STM32_UART_UART5_IRQ_PRIORITY 12
-#define STM32_UART_USART6_IRQ_PRIORITY 12
#define STM32_UART_USART1_DMA_PRIORITY 0
#define STM32_UART_USART2_DMA_PRIORITY 0
#define STM32_UART_USART3_DMA_PRIORITY 0
@@ -349,9 +363,7 @@
#define STM32_USB_OTG2_IRQ_PRIORITY 14
#define STM32_USB_OTG1_RX_FIFO_SIZE 512
#define STM32_USB_OTG2_RX_FIFO_SIZE 1024
-#define STM32_USB_OTG_THREAD_PRIO LOWPRIO
-#define STM32_USB_OTG_THREAD_STACK_SIZE 128
-#define STM32_USB_OTGFIFO_FILL_BASEPRI 0
+#define STM32_USB_HOST_WAKEUP_DURATION 2
/*
* WDG driver system settings.
diff --git a/platforms/chibios/boards/GENERIC_STM32_G431XB/configs/mcuconf.h b/platforms/chibios/boards/GENERIC_STM32_G431XB/configs/mcuconf.h
index 182d4885d7..d115028300 100644
--- a/platforms/chibios/boards/GENERIC_STM32_G431XB/configs/mcuconf.h
+++ b/platforms/chibios/boards/GENERIC_STM32_G431XB/configs/mcuconf.h
@@ -40,9 +40,24 @@
*/
#define STM32_NO_INIT FALSE
#define STM32_VOS STM32_VOS_RANGE1
+#define STM32_PWR_BOOST TRUE
#define STM32_PWR_CR2 (PWR_CR2_PLS_LEV0)
#define STM32_PWR_CR3 (PWR_CR3_EIWF)
#define STM32_PWR_CR4 (0U)
+#define STM32_PWR_PUCRA (0U)
+#define STM32_PWR_PDCRA (0U)
+#define STM32_PWR_PUCRB (0U)
+#define STM32_PWR_PDCRB (0U)
+#define STM32_PWR_PUCRC (0U)
+#define STM32_PWR_PDCRC (0U)
+#define STM32_PWR_PUCRD (0U)
+#define STM32_PWR_PDCRD (0U)
+#define STM32_PWR_PUCRE (0U)
+#define STM32_PWR_PDCRE (0U)
+#define STM32_PWR_PUCRF (0U)
+#define STM32_PWR_PDCRF (0U)
+#define STM32_PWR_PUCRG (0U)
+#define STM32_PWR_PDCRG (0U)
#define STM32_HSI16_ENABLED TRUE
#define STM32_HSI48_ENABLED TRUE
#define STM32_HSE_ENABLED FALSE
diff --git a/platforms/chibios/boards/GENERIC_STM32_G474XE/configs/mcuconf.h b/platforms/chibios/boards/GENERIC_STM32_G474XE/configs/mcuconf.h
index 117e920e3b..5710e2cb45 100644
--- a/platforms/chibios/boards/GENERIC_STM32_G474XE/configs/mcuconf.h
+++ b/platforms/chibios/boards/GENERIC_STM32_G474XE/configs/mcuconf.h
@@ -42,9 +42,24 @@
*/
#define STM32_NO_INIT FALSE
#define STM32_VOS STM32_VOS_RANGE1
+#define STM32_PWR_BOOST TRUE
#define STM32_PWR_CR2 (PWR_CR2_PLS_LEV0)
#define STM32_PWR_CR3 (PWR_CR3_EIWF)
#define STM32_PWR_CR4 (0U)
+#define STM32_PWR_PUCRA (0U)
+#define STM32_PWR_PDCRA (0U)
+#define STM32_PWR_PUCRB (0U)
+#define STM32_PWR_PDCRB (0U)
+#define STM32_PWR_PUCRC (0U)
+#define STM32_PWR_PDCRC (0U)
+#define STM32_PWR_PUCRD (0U)
+#define STM32_PWR_PDCRD (0U)
+#define STM32_PWR_PUCRE (0U)
+#define STM32_PWR_PDCRE (0U)
+#define STM32_PWR_PUCRF (0U)
+#define STM32_PWR_PDCRF (0U)
+#define STM32_PWR_PUCRG (0U)
+#define STM32_PWR_PDCRG (0U)
#define STM32_HSI16_ENABLED TRUE
#define STM32_HSI48_ENABLED TRUE
#define STM32_HSE_ENABLED FALSE
diff --git a/platforms/chibios/boards/QMK_PROTON_C/configs/chconf.h b/platforms/chibios/boards/QMK_PROTON_C/configs/chconf.h
index a1cbf68086..f812332960 100644
--- a/platforms/chibios/boards/QMK_PROTON_C/configs/chconf.h
+++ b/platforms/chibios/boards/QMK_PROTON_C/configs/chconf.h
@@ -40,7 +40,7 @@
/**
* @brief System time counter resolution.
- * @note Allowed values are 16 or 32 bits.
+ * @note Allowed values are 16, 32 or 64 bits.
*/
#if !defined(CH_CFG_ST_RESOLUTION)
#define CH_CFG_ST_RESOLUTION 32
diff --git a/platforms/chibios/boards/QMK_PROTON_C/configs/config.h b/platforms/chibios/boards/QMK_PROTON_C/configs/config.h
index a73f0c0b47..fa1a73c354 100644
--- a/platforms/chibios/boards/QMK_PROTON_C/configs/config.h
+++ b/platforms/chibios/boards/QMK_PROTON_C/configs/config.h
@@ -18,3 +18,12 @@
#ifndef EARLY_INIT_PERFORM_BOOTLOADER_JUMP
# define EARLY_INIT_PERFORM_BOOTLOADER_JUMP TRUE
#endif
+
+#ifdef CONVERT_TO_PROTON_C
+# ifndef I2C1_SDA_PIN
+# define I2C1_SDA_PIN D1
+# endif
+# ifndef I2C1_SCL_PIN
+# define I2C1_SCL_PIN D0
+# endif
+#endif
diff --git a/platforms/chibios/boards/SIPEED_LONGAN_NANO/board/board.mk b/platforms/chibios/boards/SIPEED_LONGAN_NANO/board/board.mk
new file mode 100644
index 0000000000..960fc26786
--- /dev/null
+++ b/platforms/chibios/boards/SIPEED_LONGAN_NANO/board/board.mk
@@ -0,0 +1,9 @@
+# List of all the board related files.
+BOARDSRC = ${CHIBIOS_CONTRIB}/os/hal/boards/SIPEED_LONGAN_NANO/board.c
+
+# Required include directories
+BOARDINC = ${CHIBIOS_CONTRIB}/os/hal/boards/SIPEED_LONGAN_NANO
+
+# Shared variables
+ALLCSRC += $(BOARDSRC)
+ALLINC += $(BOARDINC)
diff --git a/platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/chconf.h b/platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/chconf.h
new file mode 100644
index 0000000000..6e5adb0fe1
--- /dev/null
+++ b/platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/chconf.h
@@ -0,0 +1,23 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/* To compile the ChibiOS syscall stubs with picolibc
+ * the _reent struct has to be defined. */
+#if !defined(_FROM_ASM_) && defined(USE_PICOLIBC)
+struct _reent;
+#endif
+
+#include_next <chconf.h> \ No newline at end of file
diff --git a/platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/mcuconf.h b/platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/mcuconf.h
new file mode 100644
index 0000000000..ab086567e5
--- /dev/null
+++ b/platforms/chibios/boards/SIPEED_LONGAN_NANO/configs/mcuconf.h
@@ -0,0 +1,302 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+ ChibiOS - Copyright (C) 2021 Stefan Kerkmann
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+#pragma once
+
+#define GD32VF103_MCUCONF
+#define GD32VF103CB
+
+/*
+ * GD32VF103 drivers configuration.
+ * The following settings override the default settings present in
+ * the various device driver implementation headers.
+ * Note that the settings for each driver only have effect if the whole
+ * driver is enabled in halconf.h.
+ *
+ * IRQ priorities:
+ * 0...15 Lowest...Highest.
+ *
+ * DMA priorities:
+ * 0...3 Lowest...Highest.
+ */
+
+/*
+ * HAL driver system settings.
+*/
+
+#if defined(OVERCLOCK_120MHZ)
+/* (8MHz / 2) * 30 = 120MHz Sysclock */
+#define GD32_ALLOW_120MHZ_SYSCLK
+#define GD32_PLLMF_VALUE 30
+#define GD32_USBFSPSC GD32_USBFSPSC_DIV2P5
+#else
+/* (8MHz / 2) * 24 = 96MHz Sysclock */
+#define GD32_PLLMF_VALUE 24
+#define GD32_USBFSPSC GD32_USBFSPSC_DIV2
+#endif
+
+#define GD32_NO_INIT FALSE
+#define GD32_IRC8M_ENABLED TRUE
+#define GD32_IRC40K_ENABLED FALSE
+#define GD32_HXTAL_ENABLED TRUE
+#define GD32_LXTAL_ENABLED FALSE
+#define GD32_SCS GD32_SCS_PLL
+#define GD32_PLLSEL GD32_PLLSEL_PREDV0
+#define GD32_PREDV0SEL GD32_PREDV0SEL_HXTAL
+#define GD32_PREDV0_VALUE 2
+#define GD32_PREDV1_VALUE 2
+#define GD32_PLL1MF_VALUE 14
+#define GD32_PLL2MF_VALUE 13
+#define GD32_AHBPSC GD32_AHBPSC_DIV1
+#define GD32_APB1PSC GD32_APB1PSC_DIV2
+#define GD32_APB2PSC GD32_APB2PSC_DIV1
+#define GD32_ADCPSC GD32_ADCPSC_DIV16
+#define GD32_USB_CLOCK_REQUIRED TRUE
+#define GD32_I2S_CLOCK_REQUIRED FALSE
+#define GD32_CKOUT0SEL GD32_CKOUT0SEL_NOCLOCK
+#define GD32_RTCSRC GD32_RTCSRC_NOCLOCK
+#define GD32_PVD_ENABLE FALSE
+#define GD32_LVDT GD32_LVDT_LEV0
+
+/*
+ * ECLIC system settings.
+ */
+#define ECLIC_TRIGGER_DEFAULT ECLIC_POSTIVE_EDGE_TRIGGER
+#define ECLIC_DMA_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * IRQ system settings.
+ */
+#define GD32_IRQ_EXTI0_PRIORITY 6
+#define GD32_IRQ_EXTI1_PRIORITY 6
+#define GD32_IRQ_EXTI2_PRIORITY 6
+#define GD32_IRQ_EXTI3_PRIORITY 6
+#define GD32_IRQ_EXTI4_PRIORITY 6
+#define GD32_IRQ_EXTI5_9_PRIORITY 6
+#define GD32_IRQ_EXTI10_15_PRIORITY 6
+#define GD32_IRQ_EXTI0_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_IRQ_EXTI1_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_IRQ_EXTI2_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_IRQ_EXTI3_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_IRQ_EXTI4_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_IRQ_EXTI5_9_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_IRQ_EXTI10_15_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * ADC driver system settings.
+ */
+#define GD32_ADC_USE_ADC0 FALSE
+#define GD32_ADC_ADC0_DMA_PRIORITY 2
+#define GD32_ADC_ADC0_IRQ_PRIORITY 6
+
+/*
+ * CAN driver system settings.
+ */
+#define GD32_CAN_USE_CAN0 FALSE
+#define GD32_CAN_CAN0_IRQ_PRIORITY 11
+#define GD32_CAN_USE_CAN1 FALSE
+#define GD32_CAN_CAN1_IRQ_PRIORITY 11
+#define GD32_CAN_CAN0_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_CAN_CAN1_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * CRC driver system settings.
+ */
+#define GD32_CRC_USE_CRC0 FALSE
+#define GD32_CRC_CRC0_DMA_IRQ_PRIORITY 14
+#define GD32_CRC_CRC0_DMA_PRIORITY 2
+#define GD32_CRC_CRC0_DMA_STREAM GD32_DMA_STREAM_ID(0, 0)
+#define CRC_USE_DMA FALSE
+#define CRCSW_USE_CRC1 FALSE
+#define CRCSW_CRC32_TABLE FALSE
+#define CRCSW_CRC16_TABLE FALSE
+#define CRCSW_PROGRAMMABLE FALSE
+
+/*
+ * DAC driver system settings.
+ */
+#define GD32_DAC_USE_DAC_CH1 FALSE
+#define GD32_DAC_USE_DAC_CH2 FALSE
+
+/*
+ * GPT driver system settings.
+ */
+#define GD32_GPT_USE_TIM0 FALSE
+#define GD32_GPT_USE_TIM1 FALSE
+#define GD32_GPT_USE_TIM2 FALSE
+#define GD32_GPT_USE_TIM3 FALSE
+#define GD32_GPT_USE_TIM4 FALSE
+#define GD32_GPT_TIM0_IRQ_PRIORITY 7
+#define GD32_GPT_TIM1_IRQ_PRIORITY 7
+#define GD32_GPT_TIM2_IRQ_PRIORITY 7
+#define GD32_GPT_TIM3_IRQ_PRIORITY 7
+#define GD32_GPT_TIM4_IRQ_PRIORITY 7
+#define GD32_GPT_TIM0_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_GPT_TIM1_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_GPT_TIM2_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_GPT_TIM3_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_GPT_TIM4_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_GPT_TIM5_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_GPT_TIM6_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * I2S driver system settings.
+ */
+#define GD32_I2S_USE_SPI1 FALSE
+#define GD32_I2S_USE_SPI2 FALSE
+#define GD32_I2S_SPI1_IRQ_PRIORITY 10
+#define GD32_I2S_SPI2_IRQ_PRIORITY 10
+#define GD32_I2S_SPI1_DMA_PRIORITY 1
+#define GD32_I2S_SPI2_DMA_PRIORITY 1
+#define GD32_I2S_DMA_ERROR_HOOK(i2sp) osalSysHalt("DMA failure")
+
+/*
+ * I2C driver system settings.
+ */
+#define GD32_I2C_USE_I2C0 FALSE
+#define GD32_I2C_USE_I2C1 FALSE
+#define GD32_I2C_BUSY_TIMEOUT 50
+#define GD32_I2C_I2C0_IRQ_PRIORITY 10
+#define GD32_I2C_I2C1_IRQ_PRIORITY 5
+#define GD32_I2C_I2C0_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_I2C_I2C1_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_I2C_I2C0_DMA_PRIORITY 2
+#define GD32_I2C_I2C1_DMA_PRIORITY 2
+#define GD32_I2C_DMA_ERROR_HOOK(i2cp) osalSysHalt("DMA failure")
+
+/*
+ * ICU driver system settings.
+ */
+#define GD32_ICU_USE_TIM0 FALSE
+#define GD32_ICU_USE_TIM1 FALSE
+#define GD32_ICU_USE_TIM2 FALSE
+#define GD32_ICU_USE_TIM3 FALSE
+#define GD32_ICU_USE_TIM4 FALSE
+#define GD32_ICU_TIM0_IRQ_PRIORITY 7
+#define GD32_ICU_TIM1_IRQ_PRIORITY 7
+#define GD32_ICU_TIM2_IRQ_PRIORITY 7
+#define GD32_ICU_TIM3_IRQ_PRIORITY 7
+#define GD32_ICU_TIM4_IRQ_PRIORITY 7
+#define GD32_ICU_TIM0_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_ICU_TIM1_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_ICU_TIM2_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_ICU_TIM3_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_ICU_TIM4_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * PWM driver system settings.
+ */
+#define GD32_PWM_USE_ADVANCED FALSE
+#define GD32_PWM_USE_TIM0 FALSE
+#define GD32_PWM_USE_TIM1 FALSE
+#define GD32_PWM_USE_TIM2 FALSE
+#define GD32_PWM_USE_TIM3 FALSE
+#define GD32_PWM_USE_TIM4 FALSE
+#define GD32_PWM_TIM0_IRQ_PRIORITY 10
+#define GD32_PWM_TIM1_IRQ_PRIORITY 10
+#define GD32_PWM_TIM2_IRQ_PRIORITY 10
+#define GD32_PWM_TIM3_IRQ_PRIORITY 10
+#define GD32_PWM_TIM4_IRQ_PRIORITY 10
+#define GD32_PWM_TIM0_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_PWM_TIM1_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_PWM_TIM2_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_PWM_TIM3_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_PWM_TIM4_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * RTC driver system settings.
+ */
+#define GD32_RTC_IRQ_PRIORITY 15
+#define GD32_RTC_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * SERIAL driver system settings.
+ */
+#define GD32_SERIAL_USE_USART0 FALSE
+#define GD32_SERIAL_USE_USART1 FALSE
+#define GD32_SERIAL_USE_USART2 FALSE
+#define GD32_SERIAL_USE_UART3 FALSE
+#define GD32_SERIAL_USE_UART4 FALSE
+#define GD32_SERIAL_USART0_PRIORITY 10
+#define GD32_SERIAL_USART1_PRIORITY 10
+#define GD32_SERIAL_USART2_PRIORITY 10
+#define GD32_SERIAL_UART3_PRIORITY 10
+#define GD32_SERIAL_UART4_PRIORITY 10
+#define GD32_SERIAL_USART0_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_SERIAL_USART1_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_SERIAL_USART2_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_SERIAL_UART3_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_SERIAL_UART4_TRIGGER ECLIC_TRIGGER_DEFAULT
+
+/*
+ * SPI driver system settings.
+ */
+#define GD32_SPI_USE_SPI0 FALSE
+#define GD32_SPI_USE_SPI1 FALSE
+#define GD32_SPI_USE_SPI2 FALSE
+#define GD32_SPI_SPI0_DMA_PRIORITY 1
+#define GD32_SPI_SPI1_DMA_PRIORITY 1
+#define GD32_SPI_SPI2_DMA_PRIORITY 1
+#define GD32_SPI_SPI0_IRQ_PRIORITY 10
+#define GD32_SPI_SPI1_IRQ_PRIORITY 10
+#define GD32_SPI_SPI2_IRQ_PRIORITY 10
+#define GD32_SPI_DMA_ERROR_HOOK(spip) osalSysHalt("DMA failure")
+
+/*
+ * ST driver system settings.
+ */
+#define GD32_ST_IRQ_PRIORITY 10
+#define GD32_ST_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_ST_USE_TIMER 1
+
+/*
+ * UART driver system settings.
+ */
+#define GD32_UART_USE_USART0 FALSE
+#define GD32_UART_USE_USART1 FALSE
+#define GD32_UART_USE_USART2 FALSE
+#define GD32_UART_USE_UART3 FALSE
+#define GD32_UART_USE_UART4 FALSE
+#define GD32_UART_USART0_IRQ_PRIORITY 10
+#define GD32_UART_USART1_IRQ_PRIORITY 10
+#define GD32_UART_USART2_IRQ_PRIORITY 10
+#define GD32_UART_UART3_IRQ_PRIORITY 10
+#define GD32_UART_UART4_IRQ_PRIORITY 10
+#define GD32_UART_USART0_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_UART_USART1_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_UART_USART2_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_UART_UART3_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_UART_UART4_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_UART_USART0_DMA_PRIORITY 3
+#define GD32_UART_USART1_DMA_PRIORITY 3
+#define GD32_UART_USART2_DMA_PRIORITY 3
+#define GD32_UART_UART3_DMA_PRIORITY 3
+#define GD32_UART_UART4_DMA_PRIORITY 3
+#define GD32_UART_DMA_ERROR_HOOK(uartp) osalSysHalt("DMA failure")
+
+/*
+ * USB driver system settings.
+ */
+#define GD32_USB_USE_USBFS TRUE
+#define GD32_USB_USBFS_IRQ_PRIORITY 10
+#define GD32_USB_USBFS_IRQ_TRIGGER ECLIC_TRIGGER_DEFAULT
+#define GD32_USB_USBFS_RX_FIFO_SIZE 256
+
+/*
+ * WDG driver system settings.
+ */
+#define GD32_WDG_USE_FWDGT FALSE
diff --git a/platforms/chibios/boards/common/configs/chconf.h b/platforms/chibios/boards/common/configs/chconf.h
index 44327a82d7..18ad609ca1 100644
--- a/platforms/chibios/boards/common/configs/chconf.h
+++ b/platforms/chibios/boards/common/configs/chconf.h
@@ -40,7 +40,7 @@
/**
* @brief System time counter resolution.
- * @note Allowed values are 16 or 32 bits.
+ * @note Allowed values are 16, 32 or 64 bits.
*/
#if !defined(CH_CFG_ST_RESOLUTION)
#define CH_CFG_ST_RESOLUTION 32
diff --git a/platforms/chibios/boards/common/ld/STM32F401xC.ld b/platforms/chibios/boards/common/ld/STM32F401xC.ld
new file mode 100644
index 0000000000..8fae66cec9
--- /dev/null
+++ b/platforms/chibios/boards/common/ld/STM32F401xC.ld
@@ -0,0 +1,85 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/*
+ * STM32F401xC memory setup.
+ */
+MEMORY
+{
+ flash0 (rx) : org = 0x08000000, len = 16k /* Sector 0 - Init code as ROM bootloader assumes application starts here */
+ flash1 (rx) : org = 0x08004000, len = 16k /* Sector 1 - Emulated eeprom */
+ flash2 (rx) : org = 0x08008000, len = 256k - 32k /* Sector 2..6 - Rest of firmware */
+ flash3 (rx) : org = 0x00000000, len = 0
+ flash4 (rx) : org = 0x00000000, len = 0
+ flash5 (rx) : org = 0x00000000, len = 0
+ flash6 (rx) : org = 0x00000000, len = 0
+ flash7 (rx) : org = 0x00000000, len = 0
+ ram0 (wx) : org = 0x20000000, len = 64k
+ ram1 (wx) : org = 0x00000000, len = 0
+ ram2 (wx) : org = 0x00000000, len = 0
+ ram3 (wx) : org = 0x00000000, len = 0
+ ram4 (wx) : org = 0x00000000, len = 0
+ ram5 (wx) : org = 0x00000000, len = 0
+ ram6 (wx) : org = 0x00000000, len = 0
+ ram7 (wx) : org = 0x00000000, len = 0
+}
+
+/* For each data/text section two region are defined, a virtual region
+ and a load region (_LMA suffix).*/
+
+/* Flash region to be used for exception vectors.*/
+REGION_ALIAS("VECTORS_FLASH", flash0);
+REGION_ALIAS("VECTORS_FLASH_LMA", flash0);
+
+/* Flash region to be used for constructors and destructors.*/
+REGION_ALIAS("XTORS_FLASH", flash2);
+REGION_ALIAS("XTORS_FLASH_LMA", flash2);
+
+/* Flash region to be used for code text.*/
+REGION_ALIAS("TEXT_FLASH", flash2);
+REGION_ALIAS("TEXT_FLASH_LMA", flash2);
+
+/* Flash region to be used for read only data.*/
+REGION_ALIAS("RODATA_FLASH", flash2);
+REGION_ALIAS("RODATA_FLASH_LMA", flash2);
+
+/* Flash region to be used for various.*/
+REGION_ALIAS("VARIOUS_FLASH", flash2);
+REGION_ALIAS("VARIOUS_FLASH_LMA", flash2);
+
+/* Flash region to be used for RAM(n) initialization data.*/
+REGION_ALIAS("RAM_INIT_FLASH_LMA", flash2);
+
+/* RAM region to be used for Main stack. This stack accommodates the processing
+ of all exceptions and interrupts.*/
+REGION_ALIAS("MAIN_STACK_RAM", ram0);
+
+/* RAM region to be used for the process stack. This is the stack used by
+ the main() function.*/
+REGION_ALIAS("PROCESS_STACK_RAM", ram0);
+
+/* RAM region to be used for data segment.*/
+REGION_ALIAS("DATA_RAM", ram0);
+REGION_ALIAS("DATA_RAM_LMA", flash2);
+
+/* RAM region to be used for BSS segment.*/
+REGION_ALIAS("BSS_RAM", ram0);
+
+/* RAM region to be used for the default heap.*/
+REGION_ALIAS("HEAP_RAM", ram0);
+
+/* Generic rules inclusion.*/
+INCLUDE rules.ld
diff --git a/platforms/chibios/boards/common/ld/STM32F401xE.ld b/platforms/chibios/boards/common/ld/STM32F401xE.ld
new file mode 100644
index 0000000000..69af7ed71e
--- /dev/null
+++ b/platforms/chibios/boards/common/ld/STM32F401xE.ld
@@ -0,0 +1,85 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/*
+ * STM32F401xE memory setup.
+ */
+MEMORY
+{
+ flash0 (rx) : org = 0x08000000, len = 16k /* Sector 0 - Init code as ROM bootloader assumes application starts here */
+ flash1 (rx) : org = 0x08004000, len = 16k /* Sector 1 - Emulated eeprom */
+ flash2 (rx) : org = 0x08008000, len = 512k - 32k /* Sector 2..7 - Rest of firmware */
+ flash3 (rx) : org = 0x00000000, len = 0
+ flash4 (rx) : org = 0x00000000, len = 0
+ flash5 (rx) : org = 0x00000000, len = 0
+ flash6 (rx) : org = 0x00000000, len = 0
+ flash7 (rx) : org = 0x00000000, len = 0
+ ram0 (wx) : org = 0x20000000, len = 96k
+ ram1 (wx) : org = 0x00000000, len = 0
+ ram2 (wx) : org = 0x00000000, len = 0
+ ram3 (wx) : org = 0x00000000, len = 0
+ ram4 (wx) : org = 0x00000000, len = 0
+ ram5 (wx) : org = 0x00000000, len = 0
+ ram6 (wx) : org = 0x00000000, len = 0
+ ram7 (wx) : org = 0x00000000, len = 0
+}
+
+/* For each data/text section two region are defined, a virtual region
+ and a load region (_LMA suffix).*/
+
+/* Flash region to be used for exception vectors.*/
+REGION_ALIAS("VECTORS_FLASH", flash0);
+REGION_ALIAS("VECTORS_FLASH_LMA", flash0);
+
+/* Flash region to be used for constructors and destructors.*/
+REGION_ALIAS("XTORS_FLASH", flash2);
+REGION_ALIAS("XTORS_FLASH_LMA", flash2);
+
+/* Flash region to be used for code text.*/
+REGION_ALIAS("TEXT_FLASH", flash2);
+REGION_ALIAS("TEXT_FLASH_LMA", flash2);
+
+/* Flash region to be used for read only data.*/
+REGION_ALIAS("RODATA_FLASH", flash2);
+REGION_ALIAS("RODATA_FLASH_LMA", flash2);
+
+/* Flash region to be used for various.*/
+REGION_ALIAS("VARIOUS_FLASH", flash2);
+REGION_ALIAS("VARIOUS_FLASH_LMA", flash2);
+
+/* Flash region to be used for RAM(n) initialization data.*/
+REGION_ALIAS("RAM_INIT_FLASH_LMA", flash2);
+
+/* RAM region to be used for Main stack. This stack accommodates the processing
+ of all exceptions and interrupts.*/
+REGION_ALIAS("MAIN_STACK_RAM", ram0);
+
+/* RAM region to be used for the process stack. This is the stack used by
+ the main() function.*/
+REGION_ALIAS("PROCESS_STACK_RAM", ram0);
+
+/* RAM region to be used for data segment.*/
+REGION_ALIAS("DATA_RAM", ram0);
+REGION_ALIAS("DATA_RAM_LMA", flash2);
+
+/* RAM region to be used for BSS segment.*/
+REGION_ALIAS("BSS_RAM", ram0);
+
+/* RAM region to be used for the default heap.*/
+REGION_ALIAS("HEAP_RAM", ram0);
+
+/* Generic rules inclusion.*/
+INCLUDE rules.ld
diff --git a/platforms/chibios/boards/common/ld/STM32F405xG.ld b/platforms/chibios/boards/common/ld/STM32F405xG.ld
new file mode 100644
index 0000000000..b7d0baa210
--- /dev/null
+++ b/platforms/chibios/boards/common/ld/STM32F405xG.ld
@@ -0,0 +1,86 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/*
+ * STM32F405xG memory setup.
+ * Note: Use of ram1 and ram2 is mutually exclusive with use of ram0.
+ */
+MEMORY
+{
+ flash0 (rx) : org = 0x08000000, len = 16k /* Sector 0 - Init code as ROM bootloader assumes application starts here */
+ flash1 (rx) : org = 0x08004000, len = 16k /* Sector 1 - Emulated eeprom */
+ flash2 (rx) : org = 0x08008000, len = 1M - 32k /* Sector 2..6 - Rest of firmware */
+ flash3 (rx) : org = 0x00000000, len = 0
+ flash4 (rx) : org = 0x00000000, len = 0
+ flash5 (rx) : org = 0x00000000, len = 0
+ flash6 (rx) : org = 0x00000000, len = 0
+ flash7 (rx) : org = 0x00000000, len = 0
+ ram0 (wx) : org = 0x20000000, len = 128k /* SRAM1 + SRAM2 */
+ ram1 (wx) : org = 0x20000000, len = 112k /* SRAM1 */
+ ram2 (wx) : org = 0x2001C000, len = 16k /* SRAM2 */
+ ram3 (wx) : org = 0x00000000, len = 0
+ ram4 (wx) : org = 0x10000000, len = 64k /* CCM SRAM */
+ ram5 (wx) : org = 0x40024000, len = 4k /* BCKP SRAM */
+ ram6 (wx) : org = 0x00000000, len = 0
+ ram7 (wx) : org = 0x00000000, len = 0
+}
+
+/* For each data/text section two region are defined, a virtual region
+ and a load region (_LMA suffix).*/
+
+/* Flash region to be used for exception vectors.*/
+REGION_ALIAS("VECTORS_FLASH", flash0);
+REGION_ALIAS("VECTORS_FLASH_LMA", flash0);
+
+/* Flash region to be used for constructors and destructors.*/
+REGION_ALIAS("XTORS_FLASH", flash2);
+REGION_ALIAS("XTORS_FLASH_LMA", flash2);
+
+/* Flash region to be used for code text.*/
+REGION_ALIAS("TEXT_FLASH", flash2);
+REGION_ALIAS("TEXT_FLASH_LMA", flash2);
+
+/* Flash region to be used for read only data.*/
+REGION_ALIAS("RODATA_FLASH", flash2);
+REGION_ALIAS("RODATA_FLASH_LMA", flash2);
+
+/* Flash region to be used for various.*/
+REGION_ALIAS("VARIOUS_FLASH", flash2);
+REGION_ALIAS("VARIOUS_FLASH_LMA", flash2);
+
+/* Flash region to be used for RAM(n) initialization data.*/
+REGION_ALIAS("RAM_INIT_FLASH_LMA", flash2);
+
+/* RAM region to be used for Main stack. This stack accommodates the processing
+ of all exceptions and interrupts.*/
+REGION_ALIAS("MAIN_STACK_RAM", ram0);
+
+/* RAM region to be used for the process stack. This is the stack used by
+ the main() function.*/
+REGION_ALIAS("PROCESS_STACK_RAM", ram0);
+
+/* RAM region to be used for data segment.*/
+REGION_ALIAS("DATA_RAM", ram0);
+REGION_ALIAS("DATA_RAM_LMA", flash2);
+
+/* RAM region to be used for BSS segment.*/
+REGION_ALIAS("BSS_RAM", ram0);
+
+/* RAM region to be used for the default heap.*/
+REGION_ALIAS("HEAP_RAM", ram0);
+
+/* Generic rules inclusion.*/
+INCLUDE rules.ld
diff --git a/platforms/chibios/boards/common/ld/STM32F411xE.ld b/platforms/chibios/boards/common/ld/STM32F411xE.ld
new file mode 100644
index 0000000000..aea8084b51
--- /dev/null
+++ b/platforms/chibios/boards/common/ld/STM32F411xE.ld
@@ -0,0 +1,85 @@
+/*
+ ChibiOS - Copyright (C) 2006..2018 Giovanni Di Sirio
+
+ Licensed under the Apache License, Version 2.0 (the "License");
+ you may not use this file except in compliance with the License.
+ You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+ Unless required by applicable law or agreed to in writing, software
+ distributed under the License is distributed on an "AS IS" BASIS,
+ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ See the License for the specific language governing permissions and
+ limitations under the License.
+*/
+
+/*
+ * STM32F411xE memory setup.
+ */
+MEMORY
+{
+ flash0 (rx) : org = 0x08000000, len = 16k /* Sector 0 - Init code as ROM bootloader assumes application starts here */
+ flash1 (rx) : org = 0x08004000, len = 16k /* Sector 1 - Emulated eeprom */
+ flash2 (rx) : org = 0x08008000, len = 512k - 32k /* Sector 2..7 - Rest of firmware */
+ flash3 (rx) : org = 0x00000000, len = 0
+ flash4 (rx) : org = 0x00000000, len = 0
+ flash5 (rx) : org = 0x00000000, len = 0
+ flash6 (rx) : org = 0x00000000, len = 0
+ flash7 (rx) : org = 0x00000000, len = 0
+ ram0 (wx) : org = 0x20000000, len = 128k
+ ram1 (wx) : org = 0x00000000, len = 0
+ ram2 (wx) : org = 0x00000000, len = 0
+ ram3 (wx) : org = 0x00000000, len = 0
+ ram4 (wx) : org = 0x00000000, len = 0
+ ram5 (wx) : org = 0x00000000, len = 0
+ ram6 (wx) : org = 0x00000000, len = 0
+ ram7 (wx) : org = 0x00000000, len = 0
+}
+
+/* For each data/text section two region are defined, a virtual region
+ and a load region (_LMA suffix).*/
+
+/* Flash region to be used for exception vectors.*/
+REGION_ALIAS("VECTORS_FLASH", flash0);
+REGION_ALIAS("VECTORS_FLASH_LMA", flash0);
+
+/* Flash region to be used for constructors and destructors.*/
+REGION_ALIAS("XTORS_FLASH", flash2);
+REGION_ALIAS("XTORS_FLASH_LMA", flash2);
+
+/* Flash region to be used for code text.*/
+REGION_ALIAS("TEXT_FLASH", flash2);
+REGION_ALIAS("TEXT_FLASH_LMA", flash2);
+
+/* Flash region to be used for read only data.*/
+REGION_ALIAS("RODATA_FLASH", flash2);
+REGION_ALIAS("RODATA_FLASH_LMA", flash2);
+
+/* Flash region to be used for various.*/
+REGION_ALIAS("VARIOUS_FLASH", flash2);
+REGION_ALIAS("VARIOUS_FLASH_LMA", flash2);
+
+/* Flash region to be used for RAM(n) initialization data.*/
+REGION_ALIAS("RAM_INIT_FLASH_LMA", flash2);
+
+/* RAM region to be used for Main stack. This stack accommodates the processing
+ of all exceptions and interrupts.*/
+REGION_ALIAS("MAIN_STACK_RAM", ram0);
+
+/* RAM region to be used for the process stack. This is the stack used by
+ the main() function.*/
+REGION_ALIAS("PROCESS_STACK_RAM", ram0);
+
+/* RAM region to be used for data segment.*/
+REGION_ALIAS("DATA_RAM", ram0);
+REGION_ALIAS("DATA_RAM_LMA", flash2);
+
+/* RAM region to be used for BSS segment.*/
+REGION_ALIAS("BSS_RAM", ram0);
+
+/* RAM region to be used for the default heap.*/
+REGION_ALIAS("HEAP_RAM", ram0);
+
+/* Generic rules inclusion.*/
+INCLUDE rules.ld
diff --git a/platforms/chibios/bootloader.c b/platforms/chibios/bootloader.c
new file mode 100644
index 0000000000..5cadadeeeb
--- /dev/null
+++ b/platforms/chibios/bootloader.c
@@ -0,0 +1,145 @@
+#include "bootloader.h"
+
+#include <ch.h>
+#include <hal.h>
+#include "wait.h"
+
+/* This code should be checked whether it runs correctly on platforms */
+#define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
+#define BOOTLOADER_MAGIC 0xDEADBEEF
+#define MAGIC_ADDR (unsigned long *)(SYMVAL(__ram0_end__) - 4)
+
+#ifndef STM32_BOOTLOADER_DUAL_BANK
+# define STM32_BOOTLOADER_DUAL_BANK FALSE
+#endif
+
+#ifdef BOOTLOADER_TINYUF2
+
+# define DBL_TAP_MAGIC 0xf01669ef // From tinyuf2's board_api.h
+
+// defined by linker script
+extern uint32_t _board_dfu_dbl_tap[];
+# define DBL_TAP_REG _board_dfu_dbl_tap[0]
+
+void bootloader_jump(void) {
+ DBL_TAP_REG = DBL_TAP_MAGIC;
+ NVIC_SystemReset();
+}
+
+void enter_bootloader_mode_if_requested(void) { /* not needed, no two-stage reset */
+}
+
+#elif STM32_BOOTLOADER_DUAL_BANK
+
+// Need pin definitions
+# include "config_common.h"
+
+# ifndef STM32_BOOTLOADER_DUAL_BANK_GPIO
+# error "No STM32_BOOTLOADER_DUAL_BANK_GPIO defined, don't know which pin to toggle"
+# endif
+
+# ifndef STM32_BOOTLOADER_DUAL_BANK_POLARITY
+# define STM32_BOOTLOADER_DUAL_BANK_POLARITY 0
+# endif
+
+# ifndef STM32_BOOTLOADER_DUAL_BANK_DELAY
+# define STM32_BOOTLOADER_DUAL_BANK_DELAY 100000
+# endif
+
+extern uint32_t __ram0_end__;
+
+__attribute__((weak)) void bootloader_jump(void) {
+ // For STM32 MCUs with dual-bank flash, and we're incapable of jumping to the bootloader. The first valid flash
+ // bank is executed unconditionally after a reset, so it doesn't enter DFU unless BOOT0 is high. Instead, we do
+ // it with hardware...in this case, we pull a GPIO high/low depending on the configuration, connects 3.3V to
+ // BOOT0's RC charging circuit, lets it charge the capacitor, and issue a system reset. See the QMK discord
+ // #hardware channel pins for an example circuit.
+ palSetPadMode(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_MODE_OUTPUT_PUSHPULL);
+# if STM32_BOOTLOADER_DUAL_BANK_POLARITY
+ palSetPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO));
+# else
+ palClearPad(PAL_PORT(STM32_BOOTLOADER_DUAL_BANK_GPIO), PAL_PAD(STM32_BOOTLOADER_DUAL_BANK_GPIO));
+# endif
+
+ // Wait for a while for the capacitor to charge
+ wait_ms(100);
+
+ // Issue a system reset to get the ROM bootloader to execute, with BOOT0 high
+ NVIC_SystemReset();
+}
+
+void enter_bootloader_mode_if_requested(void) {} // not needed at all, but if anybody attempts to invoke it....
+
+#elif defined(STM32_BOOTLOADER_ADDRESS) // STM32_BOOTLOADER_DUAL_BANK
+
+extern uint32_t __ram0_end__;
+
+__attribute__((weak)) void bootloader_jump(void) {
+ *MAGIC_ADDR = BOOTLOADER_MAGIC; // set magic flag => reset handler will jump into boot loader
+ NVIC_SystemReset();
+}
+
+void enter_bootloader_mode_if_requested(void) {
+ unsigned long *check = MAGIC_ADDR;
+ if (*check == BOOTLOADER_MAGIC) {
+ *check = 0;
+ __set_CONTROL(0);
+ __set_MSP(*(__IO uint32_t *)STM32_BOOTLOADER_ADDRESS);
+ __enable_irq();
+
+ typedef void (*BootJump_t)(void);
+ BootJump_t boot_jump = *(BootJump_t *)(STM32_BOOTLOADER_ADDRESS + 4);
+ boot_jump();
+ while (1)
+ ;
+ }
+}
+
+#elif defined(GD32VF103)
+
+# define DBGMCU_KEY_UNLOCK 0x4B5A6978
+# define DBGMCU_CMD_RESET 0x1
+
+__IO uint32_t *DBGMCU_KEY = (uint32_t *)DBGMCU_BASE + 0x0CU;
+__IO uint32_t *DBGMCU_CMD = (uint32_t *)DBGMCU_BASE + 0x08U;
+
+__attribute__((weak)) void bootloader_jump(void) {
+ /* The MTIMER unit of the GD32VF103 doesn't have the MSFRST
+ * register to generate a software reset request.
+ * BUT instead two undocumented registers in the debug peripheral
+ * that allow issueing a software reset. WHO would need the MSFRST
+ * register anyway? Source:
+ * https://github.com/esmil/gd32vf103inator/blob/master/include/gd32vf103/dbg.h */
+ *DBGMCU_KEY = DBGMCU_KEY_UNLOCK;
+ *DBGMCU_CMD = DBGMCU_CMD_RESET;
+}
+
+void enter_bootloader_mode_if_requested(void) { /* Jumping to bootloader is not possible from user code. */
+}
+
+#elif defined(KL2x) || defined(K20x) || defined(MK66F18) || defined(MIMXRT1062) // STM32_BOOTLOADER_DUAL_BANK // STM32_BOOTLOADER_ADDRESS
+/* Kinetis */
+
+# if defined(BOOTLOADER_KIIBOHD)
+/* Kiibohd Bootloader (MCHCK and Infinity KB) */
+# define SCB_AIRCR_VECTKEY_WRITEMAGIC 0x05FA0000
+const uint8_t sys_reset_to_loader_magic[] = "\xff\x00\x7fRESET TO LOADER\x7f\x00\xff";
+__attribute__((weak)) void bootloader_jump(void) {
+ void *volatile vbat = (void *)VBAT;
+ __builtin_memcpy(vbat, (const void *)sys_reset_to_loader_magic, sizeof(sys_reset_to_loader_magic));
+ // request reset
+ SCB->AIRCR = SCB_AIRCR_VECTKEY_WRITEMAGIC | SCB_AIRCR_SYSRESETREQ_Msk;
+}
+
+# else /* defined(BOOTLOADER_KIIBOHD) */
+/* Default for Kinetis - expecting an ARM Teensy */
+# include "wait.h"
+__attribute__((weak)) void bootloader_jump(void) {
+ wait_ms(100);
+ __BKPT(0);
+}
+# endif /* defined(BOOTLOADER_KIIBOHD) */
+
+#else /* neither STM32 nor KINETIS */
+__attribute__((weak)) void bootloader_jump(void) {}
+#endif
diff --git a/platforms/chibios/chibios_config.h b/platforms/chibios/chibios_config.h
new file mode 100644
index 0000000000..ad2f808a95
--- /dev/null
+++ b/platforms/chibios/chibios_config.h
@@ -0,0 +1,78 @@
+/* Copyright 2019
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#ifndef USB_VBUS_PIN
+# define SPLIT_USB_DETECT // Force this on when dedicated pin is not used
+#endif
+
+// STM32 compatibility
+#if defined(MCU_STM32)
+# define CPU_CLOCK STM32_SYSCLK
+
+# if defined(STM32F1XX)
+# define USE_GPIOV1
+# define PAL_MODE_ALTERNATE_OPENDRAIN PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+# define PAL_MODE_ALTERNATE_PUSHPULL PAL_MODE_STM32_ALTERNATE_PUSHPULL
+# else
+# define PAL_OUTPUT_TYPE_OPENDRAIN PAL_STM32_OTYPE_OPENDRAIN
+# define PAL_OUTPUT_TYPE_PUSHPULL PAL_STM32_OTYPE_PUSHPULL
+# define PAL_OUTPUT_SPEED_HIGHEST PAL_STM32_OSPEED_HIGHEST
+# define PAL_PUPDR_FLOATING PAL_STM32_PUPDR_FLOATING
+# endif
+
+# if defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) || defined(STM32L1XX)
+# define USE_I2CV1
+# endif
+#endif
+
+// GD32 compatibility
+#if defined(MCU_GD32V)
+# define CPU_CLOCK GD32_SYSCLK
+
+# if defined(GD32VF103)
+# define USE_GPIOV1
+# define USE_I2CV1
+# define PAL_MODE_ALTERNATE_OPENDRAIN PAL_MODE_GD32_ALTERNATE_OPENDRAIN
+# define PAL_MODE_ALTERNATE_PUSHPULL PAL_MODE_GD32_ALTERNATE_PUSHPULL
+# endif
+#endif
+
+#if defined(GD32VF103)
+/* This chip has the same API as STM32F103, but uses different names for literally the same thing.
+ * As of 4.7.2021 QMK is tailored to use STM32 defines/names, for compatibility sake
+ * we just redefine the GD32 names. */
+# include "gd32v_compatibility.h"
+#endif
+
+// teensy compatibility
+#if defined(MCU_KINETIS)
+# define CPU_CLOCK KINETIS_SYSCLK_FREQUENCY
+
+# if defined(K20x) || defined(KL2x)
+# define USE_I2CV1
+# define USE_I2CV1_CONTRIB // for some reason a bunch of ChibiOS-Contrib boards only have clock_speed
+# define USE_GPIOV1
+# endif
+#endif
+
+#if defined(HT32)
+# define CPU_CLOCK HT32_CK_SYS_FREQUENCY
+# define PAL_MODE_ALTERNATE PAL_HT32_MODE_AF
+# define PAL_OUTPUT_TYPE_OPENDRAIN (PAL_HT32_MODE_OD | PAL_HT32_MODE_DIR)
+# define PAL_OUTPUT_TYPE_PUSHPULL PAL_HT32_MODE_DIR
+# define PAL_OUTPUT_SPEED_HIGHEST 0
+#endif
diff --git a/platforms/chibios/drivers/analog.c b/platforms/chibios/drivers/analog.c
index b1081623d3..eb437665f1 100644
--- a/platforms/chibios/drivers/analog.c
+++ b/platforms/chibios/drivers/analog.c
@@ -38,7 +38,7 @@
// Otherwise assume V3
#if defined(STM32F0XX) || defined(STM32L0XX)
# define USE_ADCV1
-#elif defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX)
+#elif defined(STM32F1XX) || defined(STM32F2XX) || defined(STM32F4XX) || defined(GD32VF103)
# define USE_ADCV2
#endif
@@ -75,7 +75,7 @@
/* User configurable ADC options */
#ifndef ADC_COUNT
-# if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F4XX)
+# if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F4XX) || defined(GD32VF103)
# define ADC_COUNT 1
# elif defined(STM32F3XX)
# define ADC_COUNT 4
@@ -122,7 +122,7 @@ static ADCConversionGroup adcConversionGroup = {
.cfgr1 = ADC_CFGR1_CONT | ADC_RESOLUTION,
.smpr = ADC_SAMPLING_RATE,
#elif defined(USE_ADCV2)
-# if !defined(STM32F1XX)
+# if !defined(STM32F1XX) && !defined(GD32VF103)
.cr2 = ADC_CR2_SWSTART, // F103 seem very unhappy with, F401 seems very unhappy without...
# endif
.smpr2 = ADC_SMPR2_SMP_AN0(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN1(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN2(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN3(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN4(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN5(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN6(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN7(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN8(ADC_SAMPLING_RATE) | ADC_SMPR2_SMP_AN9(ADC_SAMPLING_RATE),
@@ -220,7 +220,7 @@ __attribute__((weak)) adc_mux pinToMux(pin_t pin) {
case F9: return TO_MUX( ADC_CHANNEL_IN7, 2 );
case F10: return TO_MUX( ADC_CHANNEL_IN8, 2 );
# endif
-#elif defined(STM32F1XX)
+#elif defined(STM32F1XX) || defined(GD32VF103)
case A0: return TO_MUX( ADC_CHANNEL_IN0, 0 );
case A1: return TO_MUX( ADC_CHANNEL_IN1, 0 );
case A2: return TO_MUX( ADC_CHANNEL_IN2, 0 );
diff --git a/platforms/chibios/drivers/audio_dac.h b/platforms/chibios/drivers/audio_dac.h
new file mode 100644
index 0000000000..07cd622ead
--- /dev/null
+++ b/platforms/chibios/drivers/audio_dac.h
@@ -0,0 +1,126 @@
+/* Copyright 2019 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#ifndef A4
+# define A4 PAL_LINE(GPIOA, 4)
+#endif
+#ifndef A5
+# define A5 PAL_LINE(GPIOA, 5)
+#endif
+
+/**
+ * Size of the dac_buffer arrays. All must be the same size.
+ */
+#define AUDIO_DAC_BUFFER_SIZE 256U
+
+/**
+ * Highest value allowed sample value.
+
+ * since the DAC is limited to 12 bit, the absolute max is 0xfff = 4095U;
+ * lower values adjust the peak-voltage aka volume down.
+ * adjusting this value has only an effect on a sample-buffer whose values are
+ * are NOT pregenerated - see square-wave
+ */
+#ifndef AUDIO_DAC_SAMPLE_MAX
+# define AUDIO_DAC_SAMPLE_MAX 4095U
+#endif
+
+#if !defined(AUDIO_DAC_SAMPLE_RATE) && !defined(AUDIO_MAX_SIMULTANEOUS_TONES) && !defined(AUDIO_DAC_QUALITY_VERY_LOW) && !defined(AUDIO_DAC_QUALITY_LOW) && !defined(AUDIO_DAC_QUALITY_HIGH) && !defined(AUDIO_DAC_QUALITY_VERY_HIGH)
+# define AUDIO_DAC_QUALITY_SANE_MINIMUM
+#endif
+
+/**
+ * These presets allow you to quickly switch between quality settings for
+ * the DAC. The sample rate and maximum number of simultaneous tones roughly
+ * has an inverse relationship - slightly higher sample rates may be possible.
+ *
+ * NOTE: a high sample-rate results in a higher cpu-load, which might lead to
+ * (audible) discontinuities and/or starve other processes of cpu-time
+ * (like RGB-led back-lighting, ...)
+ */
+#ifdef AUDIO_DAC_QUALITY_VERY_LOW
+# define AUDIO_DAC_SAMPLE_RATE 11025U
+# define AUDIO_MAX_SIMULTANEOUS_TONES 8
+#endif
+
+#ifdef AUDIO_DAC_QUALITY_LOW
+# define AUDIO_DAC_SAMPLE_RATE 22050U
+# define AUDIO_MAX_SIMULTANEOUS_TONES 4
+#endif
+
+#ifdef AUDIO_DAC_QUALITY_HIGH
+# define AUDIO_DAC_SAMPLE_RATE 44100U
+# define AUDIO_MAX_SIMULTANEOUS_TONES 2
+#endif
+
+#ifdef AUDIO_DAC_QUALITY_VERY_HIGH
+# define AUDIO_DAC_SAMPLE_RATE 88200U
+# define AUDIO_MAX_SIMULTANEOUS_TONES 1
+#endif
+
+#ifdef AUDIO_DAC_QUALITY_SANE_MINIMUM
+/* a sane-minimum config: with a trade-off between cpu-load and tone-range
+ *
+ * the (currently) highest defined note is NOTE_B8 with 7902Hz; if we now
+ * aim for an even even multiple of the buffer-size, we end up with:
+ * ( roundUptoPow2(highest note / AUDIO_DAC_BUFFER_SIZE) * nyquist-rate * AUDIO_DAC_BUFFER_SIZE)
+ * 7902/256 = 30.867 * 2 * 256 ~= 16384
+ * which works out (but the 'scope shows some sampling artifacts with lower harmonics :-P)
+ */
+# define AUDIO_DAC_SAMPLE_RATE 16384U
+# define AUDIO_MAX_SIMULTANEOUS_TONES 8
+#endif
+
+/**
+ * Effective bit-rate of the DAC. 44.1khz is the standard for most audio - any
+ * lower will sacrifice perceptible audio quality. Any higher will limit the
+ * number of simultaneous tones. In most situations, a tenth (1/10) of the
+ * sample rate is where notes become unbearable.
+ */
+#ifndef AUDIO_DAC_SAMPLE_RATE
+# define AUDIO_DAC_SAMPLE_RATE 44100U
+#endif
+
+/**
+ * The number of tones that can be played simultaneously. If too high a value
+ * is used here, the keyboard will freeze and glitch-out when that many tones
+ * are being played.
+ */
+#ifndef AUDIO_MAX_SIMULTANEOUS_TONES
+# define AUDIO_MAX_SIMULTANEOUS_TONES 2
+#endif
+
+/**
+ * The default value of the DAC when not playing anything. Certain hardware
+ * setups may require a high (AUDIO_DAC_SAMPLE_MAX) or low (0) value here.
+ * Since multiple added sine waves tend to oscillate around the midpoint,
+ * and possibly never/rarely reach either 0 of MAX, 1/2 MAX can be a
+ * reasonable default value.
+ */
+#ifndef AUDIO_DAC_OFF_VALUE
+# define AUDIO_DAC_OFF_VALUE AUDIO_DAC_SAMPLE_MAX / 2
+#endif
+
+#if AUDIO_DAC_OFF_VALUE > AUDIO_DAC_SAMPLE_MAX
+# error "AUDIO_DAC: OFF_VALUE may not be larger than SAMPLE_MAX"
+#endif
+
+/**
+ *user overridable sample generation/processing
+ */
+uint16_t dac_value_generate(void);
diff --git a/platforms/chibios/drivers/audio_dac_additive.c b/platforms/chibios/drivers/audio_dac_additive.c
new file mode 100644
index 0000000000..db304adb87
--- /dev/null
+++ b/platforms/chibios/drivers/audio_dac_additive.c
@@ -0,0 +1,335 @@
+/* Copyright 2016-2019 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "audio.h"
+#include <ch.h>
+#include <hal.h>
+
+/*
+ Audio Driver: DAC
+
+ which utilizes the dac unit many STM32 are equipped with, to output a modulated waveform from samples stored in the dac_buffer_* array who are passed to the hardware through DMA
+
+ it is also possible to have a custom sample-LUT by implementing/overriding 'dac_value_generate'
+
+ this driver allows for multiple simultaneous tones to be played through one single channel by doing additive wave-synthesis
+*/
+
+#if !defined(AUDIO_PIN)
+# error "Audio feature enabled, but no suitable pin selected as AUDIO_PIN - see docs/feature_audio under 'ARM (DAC additive)' for available options."
+#endif
+#if defined(AUDIO_PIN_ALT) && !defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+# pragma message "Audio feature: AUDIO_PIN_ALT set, but not AUDIO_PIN_ALT_AS_NEGATIVE - pin will be left unused; audio might still work though."
+#endif
+
+#if !defined(AUDIO_PIN_ALT)
+// no ALT pin defined is valid, but the c-ifs below need some value set
+# define AUDIO_PIN_ALT PAL_NOLINE
+#endif
+
+#if !defined(AUDIO_DAC_SAMPLE_WAVEFORM_SINE) && !defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE) && !defined(AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE) && !defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID)
+# define AUDIO_DAC_SAMPLE_WAVEFORM_SINE
+#endif
+
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_SINE
+/* one full sine wave over [0,2*pi], but shifted up one amplitude and left pi/4; for the samples to start at 0
+ */
+static const dacsample_t dac_buffer_sine[AUDIO_DAC_BUFFER_SIZE] = {
+ // 256 values, max 4095
+ 0x0, 0x1, 0x2, 0x6, 0xa, 0xf, 0x16, 0x1e, 0x27, 0x32, 0x3d, 0x4a, 0x58, 0x67, 0x78, 0x89, 0x9c, 0xb0, 0xc5, 0xdb, 0xf2, 0x10a, 0x123, 0x13e, 0x159, 0x175, 0x193, 0x1b1, 0x1d1, 0x1f1, 0x212, 0x235, 0x258, 0x27c, 0x2a0, 0x2c6, 0x2ed, 0x314, 0x33c, 0x365, 0x38e, 0x3b8, 0x3e3, 0x40e, 0x43a, 0x467, 0x494, 0x4c2, 0x4f0, 0x51f, 0x54e, 0x57d, 0x5ad, 0x5dd, 0x60e, 0x63f, 0x670, 0x6a1, 0x6d3, 0x705, 0x737, 0x769, 0x79b, 0x7cd, 0x800, 0x832, 0x864, 0x896, 0x8c8, 0x8fa, 0x92c, 0x95e, 0x98f, 0x9c0, 0x9f1, 0xa22, 0xa52, 0xa82, 0xab1, 0xae0, 0xb0f, 0xb3d, 0xb6b, 0xb98, 0xbc5, 0xbf1, 0xc1c, 0xc47, 0xc71, 0xc9a, 0xcc3, 0xceb, 0xd12, 0xd39, 0xd5f, 0xd83, 0xda7, 0xdca, 0xded, 0xe0e, 0xe2e, 0xe4e, 0xe6c, 0xe8a, 0xea6, 0xec1, 0xedc, 0xef5, 0xf0d, 0xf24, 0xf3a, 0xf4f, 0xf63, 0xf76, 0xf87, 0xf98, 0xfa7, 0xfb5, 0xfc2, 0xfcd, 0xfd8, 0xfe1, 0xfe9, 0xff0, 0xff5, 0xff9, 0xffd, 0xffe,
+ 0xfff, 0xffe, 0xffd, 0xff9, 0xff5, 0xff0, 0xfe9, 0xfe1, 0xfd8, 0xfcd, 0xfc2, 0xfb5, 0xfa7, 0xf98, 0xf87, 0xf76, 0xf63, 0xf4f, 0xf3a, 0xf24, 0xf0d, 0xef5, 0xedc, 0xec1, 0xea6, 0xe8a, 0xe6c, 0xe4e, 0xe2e, 0xe0e, 0xded, 0xdca, 0xda7, 0xd83, 0xd5f, 0xd39, 0xd12, 0xceb, 0xcc3, 0xc9a, 0xc71, 0xc47, 0xc1c, 0xbf1, 0xbc5, 0xb98, 0xb6b, 0xb3d, 0xb0f, 0xae0, 0xab1, 0xa82, 0xa52, 0xa22, 0x9f1, 0x9c0, 0x98f, 0x95e, 0x92c, 0x8fa, 0x8c8, 0x896, 0x864, 0x832, 0x800, 0x7cd, 0x79b, 0x769, 0x737, 0x705, 0x6d3, 0x6a1, 0x670, 0x63f, 0x60e, 0x5dd, 0x5ad, 0x57d, 0x54e, 0x51f, 0x4f0, 0x4c2, 0x494, 0x467, 0x43a, 0x40e, 0x3e3, 0x3b8, 0x38e, 0x365, 0x33c, 0x314, 0x2ed, 0x2c6, 0x2a0, 0x27c, 0x258, 0x235, 0x212, 0x1f1, 0x1d1, 0x1b1, 0x193, 0x175, 0x159, 0x13e, 0x123, 0x10a, 0xf2, 0xdb, 0xc5, 0xb0, 0x9c, 0x89, 0x78, 0x67, 0x58, 0x4a, 0x3d, 0x32, 0x27, 0x1e, 0x16, 0xf, 0xa, 0x6, 0x2, 0x1};
+#endif // AUDIO_DAC_SAMPLE_WAVEFORM_SINE
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE
+static const dacsample_t dac_buffer_triangle[AUDIO_DAC_BUFFER_SIZE] = {
+ // 256 values, max 4095
+ 0x0, 0x20, 0x40, 0x60, 0x80, 0xa0, 0xc0, 0xe0, 0x100, 0x120, 0x140, 0x160, 0x180, 0x1a0, 0x1c0, 0x1e0, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0x400, 0x420, 0x440, 0x460, 0x480, 0x4a0, 0x4c0, 0x4e0, 0x500, 0x520, 0x540, 0x560, 0x580, 0x5a0, 0x5c0, 0x5e0, 0x600, 0x620, 0x640, 0x660, 0x680, 0x6a0, 0x6c0, 0x6e0, 0x700, 0x720, 0x740, 0x760, 0x780, 0x7a0, 0x7c0, 0x7e0, 0x800, 0x81f, 0x83f, 0x85f, 0x87f, 0x89f, 0x8bf, 0x8df, 0x8ff, 0x91f, 0x93f, 0x95f, 0x97f, 0x99f, 0x9bf, 0x9df, 0x9ff, 0xa1f, 0xa3f, 0xa5f, 0xa7f, 0xa9f, 0xabf, 0xadf, 0xaff, 0xb1f, 0xb3f, 0xb5f, 0xb7f, 0xb9f, 0xbbf, 0xbdf, 0xbff, 0xc1f, 0xc3f, 0xc5f, 0xc7f, 0xc9f, 0xcbf, 0xcdf, 0xcff, 0xd1f, 0xd3f, 0xd5f, 0xd7f, 0xd9f, 0xdbf, 0xddf, 0xdff, 0xe1f, 0xe3f, 0xe5f, 0xe7f, 0xe9f, 0xebf, 0xedf, 0xeff, 0xf1f, 0xf3f, 0xf5f, 0xf7f, 0xf9f, 0xfbf, 0xfdf,
+ 0xfff, 0xfdf, 0xfbf, 0xf9f, 0xf7f, 0xf5f, 0xf3f, 0xf1f, 0xeff, 0xedf, 0xebf, 0xe9f, 0xe7f, 0xe5f, 0xe3f, 0xe1f, 0xdff, 0xddf, 0xdbf, 0xd9f, 0xd7f, 0xd5f, 0xd3f, 0xd1f, 0xcff, 0xcdf, 0xcbf, 0xc9f, 0xc7f, 0xc5f, 0xc3f, 0xc1f, 0xbff, 0xbdf, 0xbbf, 0xb9f, 0xb7f, 0xb5f, 0xb3f, 0xb1f, 0xaff, 0xadf, 0xabf, 0xa9f, 0xa7f, 0xa5f, 0xa3f, 0xa1f, 0x9ff, 0x9df, 0x9bf, 0x99f, 0x97f, 0x95f, 0x93f, 0x91f, 0x8ff, 0x8df, 0x8bf, 0x89f, 0x87f, 0x85f, 0x83f, 0x81f, 0x800, 0x7e0, 0x7c0, 0x7a0, 0x780, 0x760, 0x740, 0x720, 0x700, 0x6e0, 0x6c0, 0x6a0, 0x680, 0x660, 0x640, 0x620, 0x600, 0x5e0, 0x5c0, 0x5a0, 0x580, 0x560, 0x540, 0x520, 0x500, 0x4e0, 0x4c0, 0x4a0, 0x480, 0x460, 0x440, 0x420, 0x400, 0x3e0, 0x3c0, 0x3a0, 0x380, 0x360, 0x340, 0x320, 0x300, 0x2e0, 0x2c0, 0x2a0, 0x280, 0x260, 0x240, 0x220, 0x200, 0x1e0, 0x1c0, 0x1a0, 0x180, 0x160, 0x140, 0x120, 0x100, 0xe0, 0xc0, 0xa0, 0x80, 0x60, 0x40, 0x20};
+#endif // AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE
+static const dacsample_t dac_buffer_square[AUDIO_DAC_BUFFER_SIZE] = {
+ [0 ... AUDIO_DAC_BUFFER_SIZE / 2 - 1] = 0, // first and
+ [AUDIO_DAC_BUFFER_SIZE / 2 ... AUDIO_DAC_BUFFER_SIZE - 1] = AUDIO_DAC_SAMPLE_MAX, // second half
+};
+#endif // AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE
+/*
+// four steps: 0, 1/3, 2/3 and 1
+static const dacsample_t dac_buffer_staircase[AUDIO_DAC_BUFFER_SIZE] = {
+ [0 ... AUDIO_DAC_BUFFER_SIZE/3 -1 ] = 0,
+ [AUDIO_DAC_BUFFER_SIZE / 4 ... AUDIO_DAC_BUFFER_SIZE / 2 -1 ] = AUDIO_DAC_SAMPLE_MAX / 3,
+ [AUDIO_DAC_BUFFER_SIZE / 2 ... 3 * AUDIO_DAC_BUFFER_SIZE / 4 -1 ] = 2 * AUDIO_DAC_SAMPLE_MAX / 3,
+ [3 * AUDIO_DAC_BUFFER_SIZE / 4 ... AUDIO_DAC_BUFFER_SIZE -1 ] = AUDIO_DAC_SAMPLE_MAX,
+}
+*/
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID
+static const dacsample_t dac_buffer_trapezoid[AUDIO_DAC_BUFFER_SIZE] = {0x0, 0x1f, 0x7f, 0xdf, 0x13f, 0x19f, 0x1ff, 0x25f, 0x2bf, 0x31f, 0x37f, 0x3df, 0x43f, 0x49f, 0x4ff, 0x55f, 0x5bf, 0x61f, 0x67f, 0x6df, 0x73f, 0x79f, 0x7ff, 0x85f, 0x8bf, 0x91f, 0x97f, 0x9df, 0xa3f, 0xa9f, 0xaff, 0xb5f, 0xbbf, 0xc1f, 0xc7f, 0xcdf, 0xd3f, 0xd9f, 0xdff, 0xe5f, 0xebf, 0xf1f, 0xf7f, 0xfdf, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
+ 0xfff, 0xfdf, 0xf7f, 0xf1f, 0xebf, 0xe5f, 0xdff, 0xd9f, 0xd3f, 0xcdf, 0xc7f, 0xc1f, 0xbbf, 0xb5f, 0xaff, 0xa9f, 0xa3f, 0x9df, 0x97f, 0x91f, 0x8bf, 0x85f, 0x7ff, 0x79f, 0x73f, 0x6df, 0x67f, 0x61f, 0x5bf, 0x55f, 0x4ff, 0x49f, 0x43f, 0x3df, 0x37f, 0x31f, 0x2bf, 0x25f, 0x1ff, 0x19f, 0x13f, 0xdf, 0x7f, 0x1f, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0};
+#endif // AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID
+
+static dacsample_t dac_buffer_empty[AUDIO_DAC_BUFFER_SIZE] = {AUDIO_DAC_OFF_VALUE};
+
+/* keep track of the sample position for for each frequency */
+static float dac_if[AUDIO_MAX_SIMULTANEOUS_TONES] = {0.0};
+
+static float active_tones_snapshot[AUDIO_MAX_SIMULTANEOUS_TONES] = {0, 0};
+static uint8_t active_tones_snapshot_length = 0;
+
+typedef enum {
+ OUTPUT_SHOULD_START,
+ OUTPUT_RUN_NORMALLY,
+ // path 1: wait for zero, then change/update active tones
+ OUTPUT_TONES_CHANGED,
+ OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE,
+ // path 2: hardware should stop, wait for zero then turn output off = stop the timer
+ OUTPUT_SHOULD_STOP,
+ OUTPUT_REACHED_ZERO_BEFORE_OFF,
+ OUTPUT_OFF,
+ OUTPUT_OFF_1,
+ OUTPUT_OFF_2, // trailing off: giving the DAC two more conversion cycles until the AUDIO_DAC_OFF_VALUE reaches the output, then turn the timer off, which leaves the output at that level
+ number_of_output_states
+} output_states_t;
+output_states_t state = OUTPUT_OFF_2;
+
+/**
+ * Generation of the waveform being passed to the callback. Declared weak so users
+ * can override it with their own wave-forms/noises.
+ */
+__attribute__((weak)) uint16_t dac_value_generate(void) {
+ // DAC is running/asking for values but snapshot length is zero -> must be playing a pause
+ if (active_tones_snapshot_length == 0) {
+ return AUDIO_DAC_OFF_VALUE;
+ }
+
+ /* doing additive wave synthesis over all currently playing tones = adding up
+ * sine-wave-samples for each frequency, scaled by the number of active tones
+ */
+ uint16_t value = 0;
+ float frequency = 0.0f;
+
+ for (uint8_t i = 0; i < active_tones_snapshot_length; i++) {
+ /* Note: a user implementation does not have to rely on the active_tones_snapshot, but
+ * could directly query the active frequencies through audio_get_processed_frequency */
+ frequency = active_tones_snapshot[i];
+
+ dac_if[i] = dac_if[i] + ((frequency * AUDIO_DAC_BUFFER_SIZE) / AUDIO_DAC_SAMPLE_RATE) * 2 / 3;
+ /*Note: the 2/3 are necessary to get the correct frequencies on the
+ * DAC output (as measured with an oscilloscope), since the gpt
+ * timer runs with 3*AUDIO_DAC_SAMPLE_RATE; and the DAC callback
+ * is called twice per conversion.*/
+
+ dac_if[i] = fmod(dac_if[i], AUDIO_DAC_BUFFER_SIZE);
+
+ // Wavetable generation/lookup
+ uint16_t dac_i = (uint16_t)dac_if[i];
+
+#if defined(AUDIO_DAC_SAMPLE_WAVEFORM_SINE)
+ value += dac_buffer_sine[dac_i] / active_tones_snapshot_length;
+#elif defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE)
+ value += dac_buffer_triangle[dac_i] / active_tones_snapshot_length;
+#elif defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID)
+ value += dac_buffer_trapezoid[dac_i] / active_tones_snapshot_length;
+#elif defined(AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE)
+ value += dac_buffer_square[dac_i] / active_tones_snapshot_length;
+#endif
+ /*
+ // SINE
+ value += dac_buffer_sine[dac_i] / active_tones_snapshot_length / 3;
+ // TRIANGLE
+ value += dac_buffer_triangle[dac_i] / active_tones_snapshot_length / 3;
+ // SQUARE
+ value += dac_buffer_square[dac_i] / active_tones_snapshot_length / 3;
+ //NOTE: combination of these three wave-forms is more exemplary - and doesn't sound particularly good :-P
+ */
+
+ // STAIRS (mostly usefully as test-pattern)
+ // value_avg = dac_buffer_staircase[dac_i] / active_tones_snapshot_length;
+ }
+
+ return value;
+}
+
+/**
+ * DAC streaming callback. Does all of the main computing for playing songs.
+ *
+ * Note: chibios calls this CB twice: during the 'half buffer event', and the 'full buffer event'.
+ */
+static void dac_end(DACDriver *dacp) {
+ dacsample_t *sample_p = (dacp)->samples;
+
+ // work on the other half of the buffer
+ if (dacIsBufferComplete(dacp)) {
+ sample_p += AUDIO_DAC_BUFFER_SIZE / 2; // 'half_index'
+ }
+
+ for (uint8_t s = 0; s < AUDIO_DAC_BUFFER_SIZE / 2; s++) {
+ if (OUTPUT_OFF <= state) {
+ sample_p[s] = AUDIO_DAC_OFF_VALUE;
+ continue;
+ } else {
+ sample_p[s] = dac_value_generate();
+ }
+
+ /* zero crossing (or approach, whereas zero == DAC_OFF_VALUE, which can be configured to anything from 0 to DAC_SAMPLE_MAX)
+ * ============================*=*========================== AUDIO_DAC_SAMPLE_MAX
+ * * *
+ * * *
+ * ---------------------------------------------------------
+ * * * } AUDIO_DAC_SAMPLE_MAX/100
+ * --------------------------------------------------------- AUDIO_DAC_OFF_VALUE
+ * * * } AUDIO_DAC_SAMPLE_MAX/100
+ * ---------------------------------------------------------
+ * *
+ * * *
+ * * *
+ * =====*=*================================================= 0x0
+ */
+ if (((sample_p[s] + (AUDIO_DAC_SAMPLE_MAX / 100)) > AUDIO_DAC_OFF_VALUE) && // value approaches from below
+ (sample_p[s] < (AUDIO_DAC_OFF_VALUE + (AUDIO_DAC_SAMPLE_MAX / 100))) // or above
+ ) {
+ if ((OUTPUT_SHOULD_START == state) && (active_tones_snapshot_length > 0)) {
+ state = OUTPUT_RUN_NORMALLY;
+ } else if (OUTPUT_TONES_CHANGED == state) {
+ state = OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE;
+ } else if (OUTPUT_SHOULD_STOP == state) {
+ state = OUTPUT_REACHED_ZERO_BEFORE_OFF;
+ }
+ }
+
+ // still 'ramping up', reset the output to OFF_VALUE until the generated values reach that value, to do a smooth handover
+ if (OUTPUT_SHOULD_START == state) {
+ sample_p[s] = AUDIO_DAC_OFF_VALUE;
+ }
+
+ if ((OUTPUT_SHOULD_START == state) || (OUTPUT_REACHED_ZERO_BEFORE_OFF == state) || (OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE == state)) {
+ uint8_t active_tones = MIN(AUDIO_MAX_SIMULTANEOUS_TONES, audio_get_number_of_active_tones());
+ active_tones_snapshot_length = 0;
+ // update the snapshot - once, and only on occasion that something changed;
+ // -> saves cpu cycles (?)
+ for (uint8_t i = 0; i < active_tones; i++) {
+ float freq = audio_get_processed_frequency(i);
+ if (freq > 0) { // disregard 'rest' notes, with valid frequency 0.0f; which would only lower the resulting waveform volume during the additive synthesis step
+ active_tones_snapshot[active_tones_snapshot_length++] = freq;
+ }
+ }
+
+ if ((0 == active_tones_snapshot_length) && (OUTPUT_REACHED_ZERO_BEFORE_OFF == state)) {
+ state = OUTPUT_OFF;
+ }
+ if (OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE == state) {
+ state = OUTPUT_RUN_NORMALLY;
+ }
+ }
+ }
+
+ // update audio internal state (note position, current_note, ...)
+ if (audio_update_state()) {
+ if (OUTPUT_SHOULD_STOP != state) {
+ state = OUTPUT_TONES_CHANGED;
+ }
+ }
+
+ if (OUTPUT_OFF <= state) {
+ if (OUTPUT_OFF_2 == state) {
+ // stopping timer6 = stopping the DAC at whatever value it is currently pushing to the output = AUDIO_DAC_OFF_VALUE
+ gptStopTimer(&GPTD6);
+ } else {
+ state++;
+ }
+ }
+}
+
+static void dac_error(DACDriver *dacp, dacerror_t err) {
+ (void)dacp;
+ (void)err;
+
+ chSysHalt("DAC failure. halp");
+}
+
+static const GPTConfig gpt6cfg1 = {.frequency = AUDIO_DAC_SAMPLE_RATE * 3,
+ .callback = NULL,
+ .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */
+ .dier = 0U};
+
+static const DACConfig dac_conf = {.init = AUDIO_DAC_OFF_VALUE, .datamode = DAC_DHRM_12BIT_RIGHT};
+
+/**
+ * @note The DAC_TRG(0) here selects the Timer 6 TRGO event, which is triggered
+ * on the rising edge after 3 APB1 clock cycles, causing our gpt6cfg1.frequency
+ * to be a third of what we expect.
+ *
+ * Here are all the values for DAC_TRG (TSEL in the ref manual)
+ * TIM15_TRGO 0b011
+ * TIM2_TRGO 0b100
+ * TIM3_TRGO 0b001
+ * TIM6_TRGO 0b000
+ * TIM7_TRGO 0b010
+ * EXTI9 0b110
+ * SWTRIG 0b111
+ */
+static const DACConversionGroup dac_conv_cfg = {.num_channels = 1U, .end_cb = dac_end, .error_cb = dac_error, .trigger = DAC_TRG(0b000)};
+
+void audio_driver_initialize() {
+ if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+ palSetLineMode(A4, PAL_MODE_INPUT_ANALOG);
+ dacStart(&DACD1, &dac_conf);
+ }
+ if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+ palSetLineMode(A5, PAL_MODE_INPUT_ANALOG);
+ dacStart(&DACD2, &dac_conf);
+ }
+
+ /* enable the output buffer, to directly drive external loads with no additional circuitry
+ *
+ * see: AN4566 Application note: Extending the DAC performance of STM32 microcontrollers
+ * Note: Buffer-Off bit -> has to be set 0 to enable the output buffer
+ * Note: enabling the output buffer imparts an additional dc-offset of a couple mV
+ *
+ * this is done here, reaching directly into the stm32 registers since chibios has not implemented BOFF handling yet
+ * (see: chibios/os/hal/ports/STM32/todo.txt '- BOFF handling in DACv1.'
+ */
+ DACD1.params->dac->CR &= ~DAC_CR_BOFF1;
+ DACD2.params->dac->CR &= ~DAC_CR_BOFF2;
+
+ if (AUDIO_PIN == A4) {
+ dacStartConversion(&DACD1, &dac_conv_cfg, dac_buffer_empty, AUDIO_DAC_BUFFER_SIZE);
+ } else if (AUDIO_PIN == A5) {
+ dacStartConversion(&DACD2, &dac_conv_cfg, dac_buffer_empty, AUDIO_DAC_BUFFER_SIZE);
+ }
+
+ // no inverted/out-of-phase waveform (yet?), only pulling AUDIO_PIN_ALT to AUDIO_DAC_OFF_VALUE
+#if defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+ if (AUDIO_PIN_ALT == A4) {
+ dacPutChannelX(&DACD1, 0, AUDIO_DAC_OFF_VALUE);
+ } else if (AUDIO_PIN_ALT == A5) {
+ dacPutChannelX(&DACD2, 0, AUDIO_DAC_OFF_VALUE);
+ }
+#endif
+
+ gptStart(&GPTD6, &gpt6cfg1);
+}
+
+void audio_driver_stop(void) { state = OUTPUT_SHOULD_STOP; }
+
+void audio_driver_start(void) {
+ gptStartContinuous(&GPTD6, 2U);
+
+ for (uint8_t i = 0; i < AUDIO_MAX_SIMULTANEOUS_TONES; i++) {
+ dac_if[i] = 0.0f;
+ active_tones_snapshot[i] = 0.0f;
+ }
+ active_tones_snapshot_length = 0;
+ state = OUTPUT_SHOULD_START;
+}
diff --git a/platforms/chibios/drivers/audio_dac_basic.c b/platforms/chibios/drivers/audio_dac_basic.c
new file mode 100644
index 0000000000..fac6513506
--- /dev/null
+++ b/platforms/chibios/drivers/audio_dac_basic.c
@@ -0,0 +1,245 @@
+/* Copyright 2016-2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "audio.h"
+#include "ch.h"
+#include "hal.h"
+
+/*
+ Audio Driver: DAC
+
+ which utilizes both channels of the DAC unit many STM32 are equipped with to output a modulated square-wave, from precomputed samples stored in a buffer, which is passed to the hardware through DMA
+
+ this driver can either be used to drive to separate speakers, wired to A4+Gnd and A5+Gnd, which allows two tones to be played simultaneously
+ OR
+ one speaker wired to A4+A5 with the AUDIO_PIN_ALT_AS_NEGATIVE define set - see docs/feature_audio
+
+*/
+
+#if !defined(AUDIO_PIN)
+# pragma message "Audio feature enabled, but no suitable pin selected as AUDIO_PIN - see docs/feature_audio under 'ARM (DAC basic)' for available options."
+// TODO: make this an 'error' instead; go through a breaking change, and add AUDIO_PIN A5 to all keyboards currently using AUDIO on STM32 based boards? - for now: set the define here
+# define AUDIO_PIN A5
+#endif
+// check configuration for ONE speaker, connected to both DAC pins
+#if defined(AUDIO_PIN_ALT_AS_NEGATIVE) && !defined(AUDIO_PIN_ALT)
+# error "Audio feature: AUDIO_PIN_ALT_AS_NEGATIVE set, but no pin configured as AUDIO_PIN_ALT"
+#endif
+
+#ifndef AUDIO_PIN_ALT
+// no ALT pin defined is valid, but the c-ifs below need some value set
+# define AUDIO_PIN_ALT -1
+#endif
+
+#if !defined(AUDIO_STATE_TIMER)
+# define AUDIO_STATE_TIMER GPTD8
+#endif
+
+// square-wave
+static const dacsample_t dac_buffer_1[AUDIO_DAC_BUFFER_SIZE] = {
+ // First half is max, second half is 0
+ [0 ... AUDIO_DAC_BUFFER_SIZE / 2 - 1] = AUDIO_DAC_SAMPLE_MAX,
+ [AUDIO_DAC_BUFFER_SIZE / 2 ... AUDIO_DAC_BUFFER_SIZE - 1] = 0,
+};
+
+// square-wave
+static const dacsample_t dac_buffer_2[AUDIO_DAC_BUFFER_SIZE] = {
+ // opposite of dac_buffer above
+ [0 ... AUDIO_DAC_BUFFER_SIZE / 2 - 1] = 0,
+ [AUDIO_DAC_BUFFER_SIZE / 2 ... AUDIO_DAC_BUFFER_SIZE - 1] = AUDIO_DAC_SAMPLE_MAX,
+};
+
+GPTConfig gpt6cfg1 = {.frequency = AUDIO_DAC_SAMPLE_RATE,
+ .callback = NULL,
+ .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */
+ .dier = 0U};
+GPTConfig gpt7cfg1 = {.frequency = AUDIO_DAC_SAMPLE_RATE,
+ .callback = NULL,
+ .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */
+ .dier = 0U};
+
+static void gpt_audio_state_cb(GPTDriver *gptp);
+GPTConfig gptStateUpdateCfg = {.frequency = 10,
+ .callback = gpt_audio_state_cb,
+ .cr2 = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event. */
+ .dier = 0U};
+
+static const DACConfig dac_conf_ch1 = {.init = AUDIO_DAC_OFF_VALUE, .datamode = DAC_DHRM_12BIT_RIGHT};
+static const DACConfig dac_conf_ch2 = {.init = AUDIO_DAC_OFF_VALUE, .datamode = DAC_DHRM_12BIT_RIGHT};
+
+/**
+ * @note The DAC_TRG(0) here selects the Timer 6 TRGO event, which is triggered
+ * on the rising edge after 3 APB1 clock cycles, causing our gpt6cfg1.frequency
+ * to be a third of what we expect.
+ *
+ * Here are all the values for DAC_TRG (TSEL in the ref manual)
+ * TIM15_TRGO 0b011
+ * TIM2_TRGO 0b100
+ * TIM3_TRGO 0b001
+ * TIM6_TRGO 0b000
+ * TIM7_TRGO 0b010
+ * EXTI9 0b110
+ * SWTRIG 0b111
+ */
+static const DACConversionGroup dac_conv_grp_ch1 = {.num_channels = 1U, .trigger = DAC_TRG(0b000)};
+static const DACConversionGroup dac_conv_grp_ch2 = {.num_channels = 1U, .trigger = DAC_TRG(0b010)};
+
+void channel_1_start(void) {
+ gptStart(&GPTD6, &gpt6cfg1);
+ gptStartContinuous(&GPTD6, 2U);
+ palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
+}
+
+void channel_1_stop(void) {
+ gptStopTimer(&GPTD6);
+ palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL);
+ palSetPad(GPIOA, 4);
+}
+
+static float channel_1_frequency = 0.0f;
+void channel_1_set_frequency(float freq) {
+ channel_1_frequency = freq;
+
+ channel_1_stop();
+ if (freq <= 0.0) // a pause/rest has freq=0
+ return;
+
+ gpt6cfg1.frequency = 2 * freq * AUDIO_DAC_BUFFER_SIZE;
+ channel_1_start();
+}
+float channel_1_get_frequency(void) { return channel_1_frequency; }
+
+void channel_2_start(void) {
+ gptStart(&GPTD7, &gpt7cfg1);
+ gptStartContinuous(&GPTD7, 2U);
+ palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
+}
+
+void channel_2_stop(void) {
+ gptStopTimer(&GPTD7);
+ palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL);
+ palSetPad(GPIOA, 5);
+}
+
+static float channel_2_frequency = 0.0f;
+void channel_2_set_frequency(float freq) {
+ channel_2_frequency = freq;
+
+ channel_2_stop();
+ if (freq <= 0.0) // a pause/rest has freq=0
+ return;
+
+ gpt7cfg1.frequency = 2 * freq * AUDIO_DAC_BUFFER_SIZE;
+ channel_2_start();
+}
+float channel_2_get_frequency(void) { return channel_2_frequency; }
+
+static void gpt_audio_state_cb(GPTDriver *gptp) {
+ if (audio_update_state()) {
+#if defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+ // one piezo/speaker connected to both audio pins, the generated square-waves are inverted
+ channel_1_set_frequency(audio_get_processed_frequency(0));
+ channel_2_set_frequency(audio_get_processed_frequency(0));
+
+#else // two separate audio outputs/speakers
+ // primary speaker on A4, optional secondary on A5
+ if (AUDIO_PIN == A4) {
+ channel_1_set_frequency(audio_get_processed_frequency(0));
+ if (AUDIO_PIN_ALT == A5) {
+ if (audio_get_number_of_active_tones() > 1) {
+ channel_2_set_frequency(audio_get_processed_frequency(1));
+ } else {
+ channel_2_stop();
+ }
+ }
+ }
+
+ // primary speaker on A5, optional secondary on A4
+ if (AUDIO_PIN == A5) {
+ channel_2_set_frequency(audio_get_processed_frequency(0));
+ if (AUDIO_PIN_ALT == A4) {
+ if (audio_get_number_of_active_tones() > 1) {
+ channel_1_set_frequency(audio_get_processed_frequency(1));
+ } else {
+ channel_1_stop();
+ }
+ }
+ }
+#endif
+ }
+}
+
+void audio_driver_initialize() {
+ if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+ palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
+ dacStart(&DACD1, &dac_conf_ch1);
+
+ // initial setup of the dac-triggering timer is still required, even
+ // though it gets reconfigured and restarted later on
+ gptStart(&GPTD6, &gpt6cfg1);
+ }
+
+ if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+ palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
+ dacStart(&DACD2, &dac_conf_ch2);
+
+ gptStart(&GPTD7, &gpt7cfg1);
+ }
+
+ /* enable the output buffer, to directly drive external loads with no additional circuitry
+ *
+ * see: AN4566 Application note: Extending the DAC performance of STM32 microcontrollers
+ * Note: Buffer-Off bit -> has to be set 0 to enable the output buffer
+ * Note: enabling the output buffer imparts an additional dc-offset of a couple mV
+ *
+ * this is done here, reaching directly into the stm32 registers since chibios has not implemented BOFF handling yet
+ * (see: chibios/os/hal/ports/STM32/todo.txt '- BOFF handling in DACv1.'
+ */
+ DACD1.params->dac->CR &= ~DAC_CR_BOFF1;
+ DACD2.params->dac->CR &= ~DAC_CR_BOFF2;
+
+ // start state-updater
+ gptStart(&AUDIO_STATE_TIMER, &gptStateUpdateCfg);
+}
+
+void audio_driver_stop(void) {
+ if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+ gptStopTimer(&GPTD6);
+
+ // stop the ongoing conversion and put the output in a known state
+ dacStopConversion(&DACD1);
+ dacPutChannelX(&DACD1, 0, AUDIO_DAC_OFF_VALUE);
+ }
+
+ if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+ gptStopTimer(&GPTD7);
+
+ dacStopConversion(&DACD2);
+ dacPutChannelX(&DACD2, 0, AUDIO_DAC_OFF_VALUE);
+ }
+ gptStopTimer(&AUDIO_STATE_TIMER);
+}
+
+void audio_driver_start(void) {
+ if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+ dacStartConversion(&DACD1, &dac_conv_grp_ch1, (dacsample_t *)dac_buffer_1, AUDIO_DAC_BUFFER_SIZE);
+ }
+ if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+ dacStartConversion(&DACD2, &dac_conv_grp_ch2, (dacsample_t *)dac_buffer_2, AUDIO_DAC_BUFFER_SIZE);
+ }
+ gptStartContinuous(&AUDIO_STATE_TIMER, 2U);
+}
diff --git a/platforms/chibios/drivers/audio_pwm.h b/platforms/chibios/drivers/audio_pwm.h
new file mode 100644
index 0000000000..86cab916e1
--- /dev/null
+++ b/platforms/chibios/drivers/audio_pwm.h
@@ -0,0 +1,40 @@
+/* Copyright 2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#if !defined(AUDIO_PWM_DRIVER)
+// NOTE: Timer2 seems to be used otherwise in QMK, otherwise we could default to A5 (= TIM2_CH1, with PWMD2 and alternate-function(1))
+# define AUDIO_PWM_DRIVER PWMD1
+#endif
+
+#if !defined(AUDIO_PWM_CHANNEL)
+// NOTE: sticking to the STM data-sheet numbering: TIMxCH1 to TIMxCH4
+// default: STM32F303CC PA8+TIM1_CH1 -> 1
+# define AUDIO_PWM_CHANNEL 1
+#endif
+
+#if !defined(AUDIO_PWM_PAL_MODE)
+// pin-alternate function: see the data-sheet for which pin needs what AF to connect to TIMx_CHy
+// default: STM32F303CC PA8+TIM1_CH1 -> 6
+# define AUDIO_PWM_PAL_MODE 6
+#endif
+
+#if !defined(AUDIO_STATE_TIMER)
+// timer used to trigger updates in the audio-system, configured/enabled in chibios mcuconf.
+// Tim6 is the default for "larger" STMs, smaller ones might not have this one (enabled) and need to switch to a different one (e.g.: STM32F103 has only Tim1-Tim4)
+# define AUDIO_STATE_TIMER GPTD6
+#endif
diff --git a/platforms/chibios/drivers/audio_pwm_hardware.c b/platforms/chibios/drivers/audio_pwm_hardware.c
new file mode 100644
index 0000000000..cd40019ee7
--- /dev/null
+++ b/platforms/chibios/drivers/audio_pwm_hardware.c
@@ -0,0 +1,144 @@
+/* Copyright 2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+Audio Driver: PWM
+
+the duty-cycle is always kept at 50%, and the pwm-period is adjusted to match the frequency of a note to be played back.
+
+this driver uses the chibios-PWM system to produce a square-wave on specific output pins that are connected to the PWM hardware.
+The hardware directly toggles the pin via its alternate function. see your MCUs data-sheet for which pin can be driven by what timer - looking for TIMx_CHy and the corresponding alternate function.
+
+ */
+
+#include "audio.h"
+#include "ch.h"
+#include "hal.h"
+
+#if !defined(AUDIO_PIN)
+# error "Audio feature enabled, but no pin selected - see docs/feature_audio under the ARM PWM settings"
+#endif
+
+extern bool playing_note;
+extern bool playing_melody;
+extern uint8_t note_timbre;
+
+static PWMConfig pwmCFG = {
+ .frequency = 100000, /* PWM clock frequency */
+ // CHIBIOS-BUG? can't set the initial period to <2, or the pwm (hard or software) takes ~130ms with .frequency=500000 for a pwmChangePeriod to take effect; with no output=silence in the meantime
+ .period = 2, /* initial PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
+ .callback = NULL, /* no callback, the hardware directly toggles the pin */
+ .channels =
+ {
+#if AUDIO_PWM_CHANNEL == 4
+ {PWM_OUTPUT_DISABLED, NULL}, /* channel 0 -> TIMx_CH1 */
+ {PWM_OUTPUT_DISABLED, NULL}, /* channel 1 -> TIMx_CH2 */
+ {PWM_OUTPUT_DISABLED, NULL}, /* channel 2 -> TIMx_CH3 */
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL} /* channel 3 -> TIMx_CH4 */
+#elif AUDIO_PWM_CHANNEL == 3
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* TIMx_CH3 */
+ {PWM_OUTPUT_DISABLED, NULL}
+#elif AUDIO_PWM_CHANNEL == 2
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* TIMx_CH2 */
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_DISABLED, NULL}
+#else /*fallback to CH1 */
+ {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* TIMx_CH1 */
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_DISABLED, NULL},
+ {PWM_OUTPUT_DISABLED, NULL}
+#endif
+ },
+};
+
+static float channel_1_frequency = 0.0f;
+void channel_1_set_frequency(float freq) {
+ channel_1_frequency = freq;
+
+ if (freq <= 0.0) // a pause/rest has freq=0
+ return;
+
+ pwmcnt_t period = (pwmCFG.frequency / freq);
+ pwmChangePeriod(&AUDIO_PWM_DRIVER, period);
+ pwmEnableChannel(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1,
+ // adjust the duty-cycle so that the output is for 'note_timbre' duration HIGH
+ PWM_PERCENTAGE_TO_WIDTH(&AUDIO_PWM_DRIVER, (100 - note_timbre) * 100));
+}
+
+float channel_1_get_frequency(void) { return channel_1_frequency; }
+
+void channel_1_start(void) {
+ pwmStop(&AUDIO_PWM_DRIVER);
+ pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+}
+
+void channel_1_stop(void) { pwmStop(&AUDIO_PWM_DRIVER); }
+
+static void gpt_callback(GPTDriver *gptp);
+GPTConfig gptCFG = {
+ /* a whole note is one beat, which is - per definition in musical_notes.h - set to 64
+ the longest note is BREAVE_DOT=128+64=192, the shortest SIXTEENTH=4
+ the tempo (which might vary!) is in bpm (beats per minute)
+ therefore: if the timer ticks away at .frequency = (60*64)Hz,
+ and the .interval counts from 64 downwards - audio_update_state is
+ called just often enough to not miss any notes
+ */
+ .frequency = 60 * 64,
+ .callback = gpt_callback,
+};
+
+void audio_driver_initialize(void) {
+ pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+
+ // connect the AUDIO_PIN to the PWM hardware
+#if defined(USE_GPIOV1) // STM32F103C8
+ palSetLineMode(AUDIO_PIN, PAL_MODE_ALTERNATE_PUSHPULL);
+#else // GPIOv2 (or GPIOv3 for f4xx, which is the same/compatible at this command)
+ palSetLineMode(AUDIO_PIN, PAL_MODE_ALTERNATE(AUDIO_PWM_PAL_MODE));
+#endif
+
+ gptStart(&AUDIO_STATE_TIMER, &gptCFG);
+}
+
+void audio_driver_start(void) {
+ channel_1_stop();
+ channel_1_start();
+
+ if (playing_note || playing_melody) {
+ gptStartContinuous(&AUDIO_STATE_TIMER, 64);
+ }
+}
+
+void audio_driver_stop(void) {
+ channel_1_stop();
+ gptStopTimer(&AUDIO_STATE_TIMER);
+}
+
+/* a regular timer task, that checks the note to be currently played
+ * and updates the pwm to output that frequency
+ */
+static void gpt_callback(GPTDriver *gptp) {
+ float freq; // TODO: freq_alt
+
+ if (audio_update_state()) {
+ freq = audio_get_processed_frequency(0); // freq_alt would be index=1
+ channel_1_set_frequency(freq);
+ }
+}
diff --git a/platforms/chibios/drivers/audio_pwm_software.c b/platforms/chibios/drivers/audio_pwm_software.c
new file mode 100644
index 0000000000..15c3e98b6a
--- /dev/null
+++ b/platforms/chibios/drivers/audio_pwm_software.c
@@ -0,0 +1,164 @@
+/* Copyright 2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/*
+Audio Driver: PWM
+
+the duty-cycle is always kept at 50%, and the pwm-period is adjusted to match the frequency of a note to be played back.
+
+this driver uses the chibios-PWM system to produce a square-wave on any given output pin in software
+- a pwm callback is used to set/clear the configured pin.
+
+ */
+#include "audio.h"
+#include "ch.h"
+#include "hal.h"
+
+#if !defined(AUDIO_PIN)
+# error "Audio feature enabled, but no pin selected - see docs/feature_audio under the ARM PWM settings"
+#endif
+extern bool playing_note;
+extern bool playing_melody;
+extern uint8_t note_timbre;
+
+static void pwm_audio_period_callback(PWMDriver *pwmp);
+static void pwm_audio_channel_interrupt_callback(PWMDriver *pwmp);
+
+static PWMConfig pwmCFG = {
+ .frequency = 100000, /* PWM clock frequency */
+ // CHIBIOS-BUG? can't set the initial period to <2, or the pwm (hard or software) takes ~130ms with .frequency=500000 for a pwmChangePeriod to take effect; with no output=silence in the meantime
+ .period = 2, /* initial PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
+ .callback = pwm_audio_period_callback,
+ .channels =
+ {
+ // software-PWM just needs another callback on any channel
+ {PWM_OUTPUT_ACTIVE_HIGH, pwm_audio_channel_interrupt_callback}, /* channel 0 -> TIMx_CH1 */
+ {PWM_OUTPUT_DISABLED, NULL}, /* channel 1 -> TIMx_CH2 */
+ {PWM_OUTPUT_DISABLED, NULL}, /* channel 2 -> TIMx_CH3 */
+ {PWM_OUTPUT_DISABLED, NULL} /* channel 3 -> TIMx_CH4 */
+ },
+};
+
+static float channel_1_frequency = 0.0f;
+void channel_1_set_frequency(float freq) {
+ channel_1_frequency = freq;
+
+ if (freq <= 0.0) // a pause/rest has freq=0
+ return;
+
+ pwmcnt_t period = (pwmCFG.frequency / freq);
+ pwmChangePeriod(&AUDIO_PWM_DRIVER, period);
+
+ pwmEnableChannel(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1,
+ // adjust the duty-cycle so that the output is for 'note_timbre' duration HIGH
+ PWM_PERCENTAGE_TO_WIDTH(&AUDIO_PWM_DRIVER, (100 - note_timbre) * 100));
+}
+
+float channel_1_get_frequency(void) { return channel_1_frequency; }
+
+void channel_1_start(void) {
+ pwmStop(&AUDIO_PWM_DRIVER);
+ pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+
+ pwmEnablePeriodicNotification(&AUDIO_PWM_DRIVER);
+ pwmEnableChannelNotification(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1);
+}
+
+void channel_1_stop(void) {
+ pwmStop(&AUDIO_PWM_DRIVER);
+
+ palClearLine(AUDIO_PIN); // leave the line low, after last note was played
+
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+ palClearLine(AUDIO_PIN_ALT); // leave the line low, after last note was played
+#endif
+}
+
+// generate a PWM signal on any pin, not necessarily the one connected to the timer
+static void pwm_audio_period_callback(PWMDriver *pwmp) {
+ (void)pwmp;
+ palClearLine(AUDIO_PIN);
+
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+ palSetLine(AUDIO_PIN_ALT);
+#endif
+}
+static void pwm_audio_channel_interrupt_callback(PWMDriver *pwmp) {
+ (void)pwmp;
+ if (channel_1_frequency > 0) {
+ palSetLine(AUDIO_PIN); // generate a PWM signal on any pin, not necessarily the one connected to the timer
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+ palClearLine(AUDIO_PIN_ALT);
+#endif
+ }
+}
+
+static void gpt_callback(GPTDriver *gptp);
+GPTConfig gptCFG = {
+ /* a whole note is one beat, which is - per definition in musical_notes.h - set to 64
+ the longest note is BREAVE_DOT=128+64=192, the shortest SIXTEENTH=4
+ the tempo (which might vary!) is in bpm (beats per minute)
+ therefore: if the timer ticks away at .frequency = (60*64)Hz,
+ and the .interval counts from 64 downwards - audio_update_state is
+ called just often enough to not miss anything
+ */
+ .frequency = 60 * 64,
+ .callback = gpt_callback,
+};
+
+void audio_driver_initialize(void) {
+ pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+
+ palSetLineMode(AUDIO_PIN, PAL_MODE_OUTPUT_PUSHPULL);
+ palClearLine(AUDIO_PIN);
+
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+ palSetLineMode(AUDIO_PIN_ALT, PAL_MODE_OUTPUT_PUSHPULL);
+ palClearLine(AUDIO_PIN_ALT);
+#endif
+
+ pwmEnablePeriodicNotification(&AUDIO_PWM_DRIVER); // enable pwm callbacks
+ pwmEnableChannelNotification(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1);
+
+ gptStart(&AUDIO_STATE_TIMER, &gptCFG);
+}
+
+void audio_driver_start(void) {
+ channel_1_stop();
+ channel_1_start();
+
+ if (playing_note || playing_melody) {
+ gptStartContinuous(&AUDIO_STATE_TIMER, 64);
+ }
+}
+
+void audio_driver_stop(void) {
+ channel_1_stop();
+ gptStopTimer(&AUDIO_STATE_TIMER);
+}
+
+/* a regular timer task, that checks the note to be currently played
+ * and updates the pwm to output that frequency
+ */
+static void gpt_callback(GPTDriver *gptp) {
+ float freq; // TODO: freq_alt
+
+ if (audio_update_state()) {
+ freq = audio_get_processed_frequency(0); // freq_alt would be index=1
+ channel_1_set_frequency(freq);
+ }
+}
diff --git a/platforms/chibios/drivers/i2c_master.c b/platforms/chibios/drivers/i2c_master.c
index fc4bb2ab37..63e85ae87d 100644
--- a/platforms/chibios/drivers/i2c_master.c
+++ b/platforms/chibios/drivers/i2c_master.c
@@ -63,16 +63,16 @@ __attribute__((weak)) void i2c_init(void) {
is_initialised = true;
// Try releasing special pins for a short time
- palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_INPUT);
- palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_INPUT);
+ palSetLineMode(I2C1_SCL_PIN, PAL_MODE_INPUT);
+ palSetLineMode(I2C1_SDA_PIN, PAL_MODE_INPUT);
chThdSleepMilliseconds(10);
#if defined(USE_GPIOV1)
- palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, I2C1_SCL_PAL_MODE);
- palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, I2C1_SDA_PAL_MODE);
+ palSetLineMode(I2C1_SCL_PIN, I2C1_SCL_PAL_MODE);
+ palSetLineMode(I2C1_SDA_PIN, I2C1_SDA_PAL_MODE);
#else
- palSetPadMode(I2C1_SCL_BANK, I2C1_SCL, PAL_MODE_ALTERNATE(I2C1_SCL_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
- palSetPadMode(I2C1_SDA_BANK, I2C1_SDA, PAL_MODE_ALTERNATE(I2C1_SDA_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
+ palSetLineMode(I2C1_SCL_PIN, PAL_MODE_ALTERNATE(I2C1_SCL_PAL_MODE) | PAL_OUTPUT_TYPE_OPENDRAIN);
+ palSetLineMode(I2C1_SDA_PIN, PAL_MODE_ALTERNATE(I2C1_SDA_PAL_MODE) | PAL_OUTPUT_TYPE_OPENDRAIN);
#endif
}
}
@@ -102,7 +102,7 @@ i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data,
i2cStart(&I2C_DRIVER, &i2cconfig);
uint8_t complete_packet[length + 1];
- for (uint8_t i = 0; i < length; i++) {
+ for (uint16_t i = 0; i < length; i++) {
complete_packet[i + 1] = data[i];
}
complete_packet[0] = regaddr;
@@ -111,6 +111,21 @@ i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data,
return chibios_to_qmk(&status);
}
+i2c_status_t i2c_writeReg16(uint8_t devaddr, uint16_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout) {
+ i2c_address = devaddr;
+ i2cStart(&I2C_DRIVER, &i2cconfig);
+
+ uint8_t complete_packet[length + 2];
+ for (uint16_t i = 0; i < length; i++) {
+ complete_packet[i + 2] = data[i];
+ }
+ complete_packet[0] = regaddr >> 8;
+ complete_packet[1] = regaddr & 0xFF;
+
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), complete_packet, length + 2, 0, 0, TIME_MS2I(timeout));
+ return chibios_to_qmk(&status);
+}
+
i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) {
i2c_address = devaddr;
i2cStart(&I2C_DRIVER, &i2cconfig);
@@ -118,4 +133,12 @@ i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16
return chibios_to_qmk(&status);
}
+i2c_status_t i2c_readReg16(uint8_t devaddr, uint16_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout) {
+ i2c_address = devaddr;
+ i2cStart(&I2C_DRIVER, &i2cconfig);
+ uint8_t register_packet[2] = {regaddr >> 8, regaddr & 0xFF};
+ msg_t status = i2cMasterTransmitTimeout(&I2C_DRIVER, (i2c_address >> 1), register_packet, 2, data, length, TIME_MS2I(timeout));
+ return chibios_to_qmk(&status);
+}
+
void i2c_stop(void) { i2cStop(&I2C_DRIVER); }
diff --git a/platforms/chibios/drivers/i2c_master.h b/platforms/chibios/drivers/i2c_master.h
index c68109acbd..5f082e9d1e 100644
--- a/platforms/chibios/drivers/i2c_master.h
+++ b/platforms/chibios/drivers/i2c_master.h
@@ -27,24 +27,11 @@
#include <ch.h>
#include <hal.h>
-#ifdef I2C1_BANK
-# define I2C1_SCL_BANK I2C1_BANK
-# define I2C1_SDA_BANK I2C1_BANK
+#ifndef I2C1_SCL_PIN
+# define I2C1_SCL_PIN B6
#endif
-
-#ifndef I2C1_SCL_BANK
-# define I2C1_SCL_BANK GPIOB
-#endif
-
-#ifndef I2C1_SDA_BANK
-# define I2C1_SDA_BANK GPIOB
-#endif
-
-#ifndef I2C1_SCL
-# define I2C1_SCL 6
-#endif
-#ifndef I2C1_SDA
-# define I2C1_SDA 7
+#ifndef I2C1_SDA_PIN
+# define I2C1_SDA_PIN B7
#endif
#ifdef USE_I2CV1
@@ -83,10 +70,10 @@
#ifdef USE_GPIOV1
# ifndef I2C1_SCL_PAL_MODE
-# define I2C1_SCL_PAL_MODE PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+# define I2C1_SCL_PAL_MODE PAL_MODE_ALTERNATE_OPENDRAIN
# endif
# ifndef I2C1_SDA_PAL_MODE
-# define I2C1_SDA_PAL_MODE PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+# define I2C1_SDA_PAL_MODE PAL_MODE_ALTERNATE_OPENDRAIN
# endif
#else
// The default PAL alternate modes are used to signal that the pins are used for I2C
@@ -109,5 +96,7 @@ i2c_status_t i2c_start(uint8_t address);
i2c_status_t i2c_transmit(uint8_t address, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_receive(uint8_t address, uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_writeReg(uint8_t devaddr, uint8_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_writeReg16(uint8_t devaddr, uint16_t regaddr, const uint8_t* data, uint16_t length, uint16_t timeout);
i2c_status_t i2c_readReg(uint8_t devaddr, uint8_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
+i2c_status_t i2c_readReg16(uint8_t devaddr, uint16_t regaddr, uint8_t* data, uint16_t length, uint16_t timeout);
void i2c_stop(void);
diff --git a/platforms/chibios/drivers/ps2/ps2_io.c b/platforms/chibios/drivers/ps2/ps2_io.c
new file mode 100644
index 0000000000..906d85d848
--- /dev/null
+++ b/platforms/chibios/drivers/ps2/ps2_io.c
@@ -0,0 +1,55 @@
+#include <stdbool.h>
+#include "ps2_io.h"
+
+// chibiOS headers
+#include "ch.h"
+#include "hal.h"
+
+/* Check port settings for clock and data line */
+#if !(defined(PS2_CLOCK_PIN))
+# error "PS/2 clock setting is required in config.h"
+#endif
+
+#if !(defined(PS2_DATA_PIN))
+# error "PS/2 data setting is required in config.h"
+#endif
+
+/*
+ * Clock
+ */
+void clock_init(void) {}
+
+void clock_lo(void) {
+ palSetLineMode(PS2_CLOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
+ palWriteLine(PS2_CLOCK_PIN, PAL_LOW);
+}
+
+void clock_hi(void) {
+ palSetLineMode(PS2_CLOCK_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
+ palWriteLine(PS2_CLOCK_PIN, PAL_HIGH);
+}
+
+bool clock_in(void) {
+ palSetLineMode(PS2_CLOCK_PIN, PAL_MODE_INPUT);
+ return palReadLine(PS2_CLOCK_PIN);
+}
+
+/*
+ * Data
+ */
+void data_init(void) {}
+
+void data_lo(void) {
+ palSetLineMode(PS2_DATA_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
+ palWriteLine(PS2_DATA_PIN, PAL_LOW);
+}
+
+void data_hi(void) {
+ palSetLineMode(PS2_DATA_PIN, PAL_MODE_OUTPUT_OPENDRAIN);
+ palWriteLine(PS2_DATA_PIN, PAL_HIGH);
+}
+
+bool data_in(void) {
+ palSetLineMode(PS2_DATA_PIN, PAL_MODE_INPUT);
+ return palReadLine(PS2_DATA_PIN);
+}
diff --git a/platforms/chibios/drivers/serial.c b/platforms/chibios/drivers/serial.c
index f54fbcee4e..ef6f0aa8d5 100644
--- a/platforms/chibios/drivers/serial.c
+++ b/platforms/chibios/drivers/serial.c
@@ -19,7 +19,7 @@
# error "chSysPolledDelayX method not supported on this platform"
#else
# undef wait_us
-# define wait_us(x) chSysPolledDelayX(US2RTC(STM32_SYSCLK, x))
+# define wait_us(x) chSysPolledDelayX(US2RTC(CPU_CLOCK, x))
#endif
#ifndef SELECT_SOFT_SERIAL_SPEED
diff --git a/platforms/chibios/drivers/serial_usart.c b/platforms/chibios/drivers/serial_usart.c
index ea4473791c..124e4be685 100644
--- a/platforms/chibios/drivers/serial_usart.c
+++ b/platforms/chibios/drivers/serial_usart.c
@@ -104,9 +104,9 @@ static inline bool receive(uint8_t* destination, const size_t size) {
__attribute__((weak)) void usart_init(void) {
# if defined(MCU_STM32)
# if defined(USE_GPIOV1)
- palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
+ palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE_OPENDRAIN);
# else
- palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE(SERIAL_USART_TX_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
+ palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE(SERIAL_USART_TX_PAL_MODE) | PAL_OUTPUT_TYPE_OPENDRAIN);
# endif
# if defined(USART_REMAP)
@@ -125,11 +125,11 @@ __attribute__((weak)) void usart_init(void) {
__attribute__((weak)) void usart_init(void) {
# if defined(MCU_STM32)
# if defined(USE_GPIOV1)
- palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_STM32_ALTERNATE_PUSHPULL);
+ palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE_PUSHPULL);
palSetLineMode(SERIAL_USART_RX_PIN, PAL_MODE_INPUT);
# else
- palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE(SERIAL_USART_TX_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
- palSetLineMode(SERIAL_USART_RX_PIN, PAL_MODE_ALTERNATE(SERIAL_USART_RX_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
+ palSetLineMode(SERIAL_USART_TX_PIN, PAL_MODE_ALTERNATE(SERIAL_USART_TX_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST);
+ palSetLineMode(SERIAL_USART_RX_PIN, PAL_MODE_ALTERNATE(SERIAL_USART_RX_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST);
# endif
# if defined(USART_REMAP)
diff --git a/platforms/chibios/drivers/spi_master.c b/platforms/chibios/drivers/spi_master.c
index 28ddcbb2ba..c592369dde 100644
--- a/platforms/chibios/drivers/spi_master.c
+++ b/platforms/chibios/drivers/spi_master.c
@@ -42,9 +42,9 @@ __attribute__((weak)) void spi_init(void) {
palSetPadMode(PAL_PORT(SPI_MOSI_PIN), PAL_PAD(SPI_MOSI_PIN), SPI_MOSI_PAL_MODE);
palSetPadMode(PAL_PORT(SPI_MISO_PIN), PAL_PAD(SPI_MISO_PIN), SPI_MISO_PAL_MODE);
#else
- palSetPadMode(PAL_PORT(SPI_SCK_PIN), PAL_PAD(SPI_SCK_PIN), PAL_MODE_ALTERNATE(SPI_SCK_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
- palSetPadMode(PAL_PORT(SPI_MOSI_PIN), PAL_PAD(SPI_MOSI_PIN), PAL_MODE_ALTERNATE(SPI_MOSI_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
- palSetPadMode(PAL_PORT(SPI_MISO_PIN), PAL_PAD(SPI_MISO_PIN), PAL_MODE_ALTERNATE(SPI_MISO_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST);
+ palSetPadMode(PAL_PORT(SPI_SCK_PIN), PAL_PAD(SPI_SCK_PIN), PAL_MODE_ALTERNATE(SPI_SCK_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST);
+ palSetPadMode(PAL_PORT(SPI_MOSI_PIN), PAL_PAD(SPI_MOSI_PIN), PAL_MODE_ALTERNATE(SPI_MOSI_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST);
+ palSetPadMode(PAL_PORT(SPI_MISO_PIN), PAL_PAD(SPI_MISO_PIN), PAL_MODE_ALTERNATE(SPI_MISO_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST);
#endif
}
}
@@ -110,6 +110,31 @@ bool spi_start(pin_t slavePin, bool lsbFirst, uint8_t mode, uint16_t divisor) {
spiConfig.tar0 |= SPIx_CTARn_BR(8);
break;
}
+
+#elif defined(HT32)
+ spiConfig.cr0 = SPI_CR0_SELOEN;
+ spiConfig.cr1 = SPI_CR1_MODE | 8; // 8 bits and in master mode
+
+ if (lsbFirst) {
+ spiConfig.cr1 |= SPI_CR1_FIRSTBIT;
+ }
+
+ switch (mode) {
+ case 0:
+ spiConfig.cr1 |= SPI_CR1_FORMAT_MODE0;
+ break;
+ case 1:
+ spiConfig.cr1 |= SPI_CR1_FORMAT_MODE1;
+ break;
+ case 2:
+ spiConfig.cr1 |= SPI_CR1_FORMAT_MODE2;
+ break;
+ case 3:
+ spiConfig.cr1 |= SPI_CR1_FORMAT_MODE3;
+ break;
+ }
+
+ spiConfig.cpr = (roundedDivisor - 1) >> 1;
#else
spiConfig.cr1 = 0;
diff --git a/platforms/chibios/drivers/spi_master.h b/platforms/chibios/drivers/spi_master.h
index b5a6ef1437..6a3ce481f1 100644
--- a/platforms/chibios/drivers/spi_master.h
+++ b/platforms/chibios/drivers/spi_master.h
@@ -33,7 +33,7 @@
#ifndef SPI_SCK_PAL_MODE
# if defined(USE_GPIOV1)
-# define SPI_SCK_PAL_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
+# define SPI_SCK_PAL_MODE PAL_MODE_ALTERNATE_PUSHPULL
# else
# define SPI_SCK_PAL_MODE 5
# endif
@@ -45,7 +45,7 @@
#ifndef SPI_MOSI_PAL_MODE
# if defined(USE_GPIOV1)
-# define SPI_MOSI_PAL_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
+# define SPI_MOSI_PAL_MODE PAL_MODE_ALTERNATE_PUSHPULL
# else
# define SPI_MOSI_PAL_MODE 5
# endif
@@ -57,7 +57,7 @@
#ifndef SPI_MISO_PAL_MODE
# if defined(USE_GPIOV1)
-# define SPI_MISO_PAL_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
+# define SPI_MISO_PAL_MODE PAL_MODE_ALTERNATE_PUSHPULL
# else
# define SPI_MISO_PAL_MODE 5
# endif
diff --git a/platforms/chibios/drivers/uart.c b/platforms/chibios/drivers/uart.c
index 030335b342..297c1892c3 100644
--- a/platforms/chibios/drivers/uart.c
+++ b/platforms/chibios/drivers/uart.c
@@ -29,22 +29,26 @@ void uart_init(uint32_t baud) {
serialConfig.speed = baud;
#if defined(USE_GPIOV1)
- palSetLineMode(SD1_TX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
- palSetLineMode(SD1_RX_PIN, PAL_MODE_STM32_ALTERNATE_OPENDRAIN);
+ palSetLineMode(SD1_TX_PIN, PAL_MODE_ALTERNATE_OPENDRAIN);
+ palSetLineMode(SD1_RX_PIN, PAL_MODE_ALTERNATE_OPENDRAIN);
#else
- palSetLineMode(SD1_TX_PIN, PAL_MODE_ALTERNATE(SD1_TX_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
- palSetLineMode(SD1_RX_PIN, PAL_MODE_ALTERNATE(SD1_RX_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN);
+ palSetLineMode(SD1_TX_PIN, PAL_MODE_ALTERNATE(SD1_TX_PAL_MODE) | PAL_OUTPUT_TYPE_OPENDRAIN);
+ palSetLineMode(SD1_RX_PIN, PAL_MODE_ALTERNATE(SD1_RX_PAL_MODE) | PAL_OUTPUT_TYPE_OPENDRAIN);
#endif
sdStart(&SERIAL_DRIVER, &serialConfig);
}
}
-void uart_putchar(uint8_t c) { sdPut(&SERIAL_DRIVER, c); }
+void uart_write(uint8_t data) { sdPut(&SERIAL_DRIVER, c); }
-uint8_t uart_getchar(void) {
+uint8_t uart_read(void) {
msg_t res = sdGet(&SERIAL_DRIVER);
return (uint8_t)res;
}
+void uart_transmit(const uint8_t *data, uint16_t length) { sdWrite(&SERIAL_DRIVER, data, length); }
+
+void uart_receive(uint8_t *data, uint16_t length) { sdRead(&SERIAL_DRIVER, data, length); }
+
bool uart_available(void) { return !sdGetWouldBlock(&SERIAL_DRIVER); }
diff --git a/platforms/chibios/drivers/uart.h b/platforms/chibios/drivers/uart.h
index b4e20e9fd3..5bc4875901 100644
--- a/platforms/chibios/drivers/uart.h
+++ b/platforms/chibios/drivers/uart.h
@@ -70,8 +70,12 @@
void uart_init(uint32_t baud);
-void uart_putchar(uint8_t c);
+void uart_write(uint8_t data);
-uint8_t uart_getchar(void);
+uint8_t uart_read(void);
+
+void uart_transmit(const uint8_t *data, uint16_t length);
+
+void uart_receive(uint8_t *data, uint16_t length);
bool uart_available(void);
diff --git a/platforms/chibios/drivers/ws2812.c b/platforms/chibios/drivers/ws2812.c
index 0d12e2fb79..b46c46ae57 100644
--- a/platforms/chibios/drivers/ws2812.c
+++ b/platforms/chibios/drivers/ws2812.c
@@ -6,7 +6,7 @@
/* Adapted from https://github.com/bigjosh/SimpleNeoPixelDemo/ */
#ifndef NOP_FUDGE
-# if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F3XX) || defined(STM32F4XX) || defined(STM32L0XX)
+# if defined(STM32F0XX) || defined(STM32F1XX) || defined(GD32VF103) || defined(STM32F3XX) || defined(STM32F4XX) || defined(STM32L0XX)
# define NOP_FUDGE 0.4
# else
# error("NOP_FUDGE configuration required")
@@ -23,7 +23,7 @@
#endif
#define NUMBER_NOPS 6
-#define CYCLES_PER_SEC (STM32_SYSCLK / NUMBER_NOPS * NOP_FUDGE)
+#define CYCLES_PER_SEC (CPU_CLOCK / NUMBER_NOPS * NOP_FUDGE)
#define NS_PER_SEC (1000000000L) // Note that this has to be SIGNED since we want to be able to check for negative values of derivatives
#define NS_PER_CYCLE (NS_PER_SEC / CYCLES_PER_SEC)
#define NS_TO_CYCLES(n) ((n) / NS_PER_CYCLE)
diff --git a/platforms/chibios/drivers/ws2812_pwm.c b/platforms/chibios/drivers/ws2812_pwm.c
index e6af55b6b3..c17b9cd4e5 100644
--- a/platforms/chibios/drivers/ws2812_pwm.c
+++ b/platforms/chibios/drivers/ws2812_pwm.c
@@ -5,7 +5,9 @@
/* Adapted from https://github.com/joewa/WS2812-LED-Driver_ChibiOS/ */
#ifdef RGBW
-# error "RGBW not supported"
+# define WS2812_CHANNELS 4
+#else
+# define WS2812_CHANNELS 3
#endif
#ifndef WS2812_PWM_DRIVER
@@ -40,15 +42,15 @@
// Default Push Pull
#ifndef WS2812_EXTERNAL_PULLUP
# if defined(USE_GPIOV1)
-# define WS2812_OUTPUT_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
+# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE_PUSHPULL
# else
-# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING
+# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL | PAL_OUTPUT_SPEED_HIGHEST | PAL_PUPDR_FLOATING
# endif
#else
# if defined(USE_GPIOV1)
-# define WS2812_OUTPUT_MODE PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE_OPENDRAIN
# else
-# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN | PAL_STM32_OSPEED_HIGHEST | PAL_STM32_PUPDR_FLOATING
+# define WS2812_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_PWM_PAL_MODE) | PAL_OUTPUT_TYPE_OPENDRAIN | PAL_OUTPUT_SPEED_HIGHEST | PAL_PUPDR_FLOATING
# endif
#endif
@@ -59,7 +61,7 @@
/* --- PRIVATE CONSTANTS ---------------------------------------------------- */
-#define WS2812_PWM_FREQUENCY (STM32_SYSCLK / 2) /**< Clock frequency of PWM, must be valid with respect to system clock! */
+#define WS2812_PWM_FREQUENCY (CPU_CLOCK / 2) /**< Clock frequency of PWM, must be valid with respect to system clock! */
#define WS2812_PWM_PERIOD (WS2812_PWM_FREQUENCY / WS2812_PWM_TARGET_PERIOD) /**< Clock period in ticks. 1 / 800kHz = 1.25 uS (as per datasheet) */
/**
@@ -68,8 +70,9 @@
* The reset period for each frame is defined in WS2812_TRST_US.
* Calculate the number of zeroes to add at the end assuming 1.25 uS/bit:
*/
+#define WS2812_COLOR_BITS (WS2812_CHANNELS * 8)
#define WS2812_RESET_BIT_N (1000 * WS2812_TRST_US / 1250)
-#define WS2812_COLOR_BIT_N (RGBLED_NUM * 24) /**< Number of data bits */
+#define WS2812_COLOR_BIT_N (RGBLED_NUM * WS2812_COLOR_BITS) /**< Number of data bits */
#define WS2812_BIT_N (WS2812_COLOR_BIT_N + WS2812_RESET_BIT_N) /**< Total number of bits in a frame */
/**
@@ -114,7 +117,7 @@
*
* @return The bit index
*/
-#define WS2812_BIT(led, byte, bit) (24 * (led) + 8 * (byte) + (7 - (bit)))
+#define WS2812_BIT(led, byte, bit) (WS2812_COLOR_BITS * (led) + 8 * (byte) + (7 - (bit)))
#if (WS2812_BYTE_ORDER == WS2812_BYTE_ORDER_GRB)
/**
@@ -228,6 +231,20 @@
# define WS2812_BLUE_BIT(led, bit) WS2812_BIT((led), 0, (bit))
#endif
+#ifdef RGBW
+/**
+ * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given white bit
+ *
+ * @note The white byte is the last byte in the color packet
+ *
+ * @param[in] led: The led index [0, @ref WS2812_LED_N)
+ * @param[in] bit: The bit index [0, 7]
+ *
+ * @return The bit index
+ */
+# define WS2812_WHITE_BIT(led, bit) WS2812_BIT((led), 3, (bit))
+#endif
+
/* --- PRIVATE VARIABLES ---------------------------------------------------- */
static uint32_t ws2812_frame_buffer[WS2812_BIT_N + 1]; /**< Buffer for a frame */
@@ -296,6 +313,17 @@ void ws2812_write_led(uint16_t led_number, uint8_t r, uint8_t g, uint8_t b) {
ws2812_frame_buffer[WS2812_BLUE_BIT(led_number, bit)] = ((b >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0;
}
}
+void ws2812_write_led_rgbw(uint16_t led_number, uint8_t r, uint8_t g, uint8_t b, uint8_t w) {
+ // Write color to frame buffer
+ for (uint8_t bit = 0; bit < 8; bit++) {
+ ws2812_frame_buffer[WS2812_RED_BIT(led_number, bit)] = ((r >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0;
+ ws2812_frame_buffer[WS2812_GREEN_BIT(led_number, bit)] = ((g >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0;
+ ws2812_frame_buffer[WS2812_BLUE_BIT(led_number, bit)] = ((b >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0;
+#ifdef RGBW
+ ws2812_frame_buffer[WS2812_WHITE_BIT(led_number, bit)] = ((w >> bit) & 0x01) ? WS2812_DUTYCYCLE_1 : WS2812_DUTYCYCLE_0;
+#endif
+ }
+}
// Setleds for standard RGB
void ws2812_setleds(LED_TYPE* ledarray, uint16_t leds) {
@@ -306,6 +334,10 @@ void ws2812_setleds(LED_TYPE* ledarray, uint16_t leds) {
}
for (uint16_t i = 0; i < leds; i++) {
+#ifdef RGBW
+ ws2812_write_led_rgbw(i, ledarray[i].r, ledarray[i].g, ledarray[i].b, ledarray[i].w);
+#else
ws2812_write_led(i, ledarray[i].r, ledarray[i].g, ledarray[i].b);
+#endif
}
}
diff --git a/platforms/chibios/drivers/ws2812_spi.c b/platforms/chibios/drivers/ws2812_spi.c
index fe14b478ab..62722f466e 100644
--- a/platforms/chibios/drivers/ws2812_spi.c
+++ b/platforms/chibios/drivers/ws2812_spi.c
@@ -3,10 +3,6 @@
/* Adapted from https://github.com/gamazeps/ws2812b-chibios-SPIDMA/ */
-#ifdef RGBW
-# error "RGBW not supported"
-#endif
-
// Define the spi your LEDs are plugged to here
#ifndef WS2812_SPI
# define WS2812_SPI SPID1
@@ -24,15 +20,15 @@
// Default Push Pull
#ifndef WS2812_EXTERNAL_PULLUP
# if defined(USE_GPIOV1)
-# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
+# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_ALTERNATE_PUSHPULL
# else
-# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_SPI_MOSI_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL
+# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_SPI_MOSI_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL
# endif
#else
# if defined(USE_GPIOV1)
-# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_STM32_ALTERNATE_OPENDRAIN
+# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_ALTERNATE_OPENDRAIN
# else
-# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_SPI_MOSI_PAL_MODE) | PAL_STM32_OTYPE_OPENDRAIN
+# define WS2812_MOSI_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_SPI_MOSI_PAL_MODE) | PAL_OUTPUT_TYPE_OPENDRAIN
# endif
#endif
@@ -68,14 +64,18 @@
#endif
#if defined(USE_GPIOV1)
-# define WS2812_SCK_OUTPUT_MODE PAL_MODE_STM32_ALTERNATE_PUSHPULL
+# define WS2812_SCK_OUTPUT_MODE PAL_MODE_ALTERNATE_PUSHPULL
#else
-# define WS2812_SCK_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_SPI_SCK_PAL_MODE) | PAL_STM32_OTYPE_PUSHPULL
+# define WS2812_SCK_OUTPUT_MODE PAL_MODE_ALTERNATE(WS2812_SPI_SCK_PAL_MODE) | PAL_OUTPUT_TYPE_PUSHPULL
#endif
#define BYTES_FOR_LED_BYTE 4
-#define NB_COLORS 3
-#define BYTES_FOR_LED (BYTES_FOR_LED_BYTE * NB_COLORS)
+#ifdef RGBW
+# define WS2812_CHANNELS 4
+#else
+# define WS2812_CHANNELS 3
+#endif
+#define BYTES_FOR_LED (BYTES_FOR_LED_BYTE * WS2812_CHANNELS)
#define DATA_SIZE (BYTES_FOR_LED * RGBLED_NUM)
#define RESET_SIZE (1000 * WS2812_TRST_US / (2 * 1250))
#define PREAMBLE_SIZE 4
@@ -116,6 +116,9 @@ static void set_led_color_rgb(LED_TYPE color, int pos) {
for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + BYTES_FOR_LED_BYTE + j] = get_protocol_eq(color.g, j);
for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + BYTES_FOR_LED_BYTE * 2 + j] = get_protocol_eq(color.r, j);
#endif
+#ifdef RGBW
+ for (int j = 0; j < 4; j++) tx_start[BYTES_FOR_LED * pos + BYTES_FOR_LED_BYTE * 4 + j] = get_protocol_eq(color.w, j);
+#endif
}
void ws2812_init(void) {
diff --git a/platforms/chibios/eeprom_stm32.c b/platforms/chibios/eeprom_stm32.c
new file mode 100644
index 0000000000..acc6a48516
--- /dev/null
+++ b/platforms/chibios/eeprom_stm32.c
@@ -0,0 +1,687 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from http://engsta.com/stm32-flash-memory-eeprom-emulator/ by
+ * Artur F.
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ * Modifications to add flash wear leveling by Ilya Zhuravlev
+ * Modifications to increase flash density by Don Kjer
+ */
+
+#include <stdio.h>
+#include <stdbool.h>
+#include "util.h"
+#include "debug.h"
+#include "eeprom_stm32.h"
+#include "flash_stm32.h"
+
+/*
+ * We emulate eeprom by writing a snapshot compacted view of eeprom contents,
+ * followed by a write log of any change since that snapshot:
+ *
+ * === SIMULATED EEPROM CONTENTS ===
+ *
+ * ┌─ Compacted ┬ Write Log ─┐
+ * │............│[BYTE][BYTE]│
+ * │FFFF....FFFF│[WRD0][WRD1]│
+ * │FFFFFFFFFFFF│[WORD][NEXT]│
+ * │....FFFFFFFF│[BYTE][WRD0]│
+ * ├────────────┼────────────┤
+ * └──PAGE_BASE │ │
+ * PAGE_LAST─┴─WRITE_BASE │
+ * WRITE_LAST ┘
+ *
+ * Compacted contents are the 1's complement of the actual EEPROM contents.
+ * e.g. An 'FFFF' represents a '0000' value.
+ *
+ * The size of the 'compacted' area is equal to the size of the 'emulated' eeprom.
+ * The size of the compacted-area and write log are configurable, and the combined
+ * size of Compacted + WriteLog is a multiple FEE_PAGE_SIZE, which is MCU dependent.
+ * Simulated Eeprom contents are located at the end of available flash space.
+ *
+ * The following configuration defines can be set:
+ *
+ * FEE_PAGE_COUNT # Total number of pages to use for eeprom simulation (Compact + Write log)
+ * FEE_DENSITY_BYTES # Size of simulated eeprom. (Defaults to half the space allocated by FEE_PAGE_COUNT)
+ * NOTE: The current implementation does not include page swapping,
+ * and FEE_DENSITY_BYTES will consume that amount of RAM as a cached view of actual EEPROM contents.
+ *
+ * The maximum size of FEE_DENSITY_BYTES is currently 16384. The write log size equals
+ * FEE_PAGE_COUNT * FEE_PAGE_SIZE - FEE_DENSITY_BYTES.
+ * The larger the write log, the less frequently the compacted area needs to be rewritten.
+ *
+ *
+ * *** General Algorithm ***
+ *
+ * During initialization:
+ * The contents of the Compacted-flash area are loaded and the 1's complement value
+ * is cached into memory (e.g. 0xFFFF in Flash represents 0x0000 in cache).
+ * Write log entries are processed until a 0xFFFF is reached.
+ * Each log entry updates a byte or word in the cache.
+ *
+ * During reads:
+ * EEPROM contents are given back directly from the cache in memory.
+ *
+ * During writes:
+ * The contents of the cache is updated first.
+ * If the Compacted-flash area corresponding to the write address is unprogrammed, the 1's complement of the value is written directly into Compacted-flash
+ * Otherwise:
+ * If the write log is full, erase both the Compacted-flash area and the Write log, then write cached contents to the Compacted-flash area.
+ * Otherwise a Write log entry is constructed and appended to the next free position in the Write log.
+ *
+ *
+ * *** Write Log Structure ***
+ *
+ * Write log entries allow for optimized byte writes to addresses below 128. Writing 0 or 1 words are also optimized when word-aligned.
+ *
+ * === WRITE LOG ENTRY FORMATS ===
+ *
+ * ╔═══ Byte-Entry ══╗
+ * ║0XXXXXXX║YYYYYYYY║
+ * ║ └──┬──┘║└──┬───┘║
+ * ║ Address║ Value ║
+ * ╚════════╩════════╝
+ * 0 <= Address < 0x80 (128)
+ *
+ * ╔ Word-Encoded 0 ╗
+ * ║100XXXXXXXXXXXXX║
+ * ║ │└─────┬─────┘║
+ * ║ │Address >> 1 ║
+ * ║ └── Value: 0 ║
+ * ╚════════════════╝
+ * 0 <= Address <= 0x3FFE (16382)
+ *
+ * ╔ Word-Encoded 1 ╗
+ * ║101XXXXXXXXXXXXX║
+ * ║ │└─────┬─────┘║
+ * ║ │Address >> 1 ║
+ * ║ └── Value: 1 ║
+ * ╚════════════════╝
+ * 0 <= Address <= 0x3FFE (16382)
+ *
+ * ╔═══ Reserved ═══╗
+ * ║110XXXXXXXXXXXXX║
+ * ╚════════════════╝
+ *
+ * ╔═══════════ Word-Next ═══════════╗
+ * ║111XXXXXXXXXXXXX║YYYYYYYYYYYYYYYY║
+ * ║ └─────┬─────┘║└───────┬──────┘║
+ * ║(Address-128)>>1║ ~Value ║
+ * ╚════════════════╩════════════════╝
+ * ( 0 <= Address < 0x0080 (128): Reserved)
+ * 0x80 <= Address <= 0x3FFE (16382)
+ *
+ * Write Log entry ranges:
+ * 0x0000 ... 0x7FFF - Byte-Entry; address is (Entry & 0x7F00) >> 4; value is (Entry & 0xFF)
+ * 0x8000 ... 0x9FFF - Word-Encoded 0; address is (Entry & 0x1FFF) << 1; value is 0
+ * 0xA000 ... 0xBFFF - Word-Encoded 1; address is (Entry & 0x1FFF) << 1; value is 1
+ * 0xC000 ... 0xDFFF - Reserved
+ * 0xE000 ... 0xFFBF - Word-Next; address is (Entry & 0x1FFF) << 1 + 0x80; value is ~(Next_Entry)
+ * 0xFFC0 ... 0xFFFE - Reserved
+ * 0xFFFF - Unprogrammed
+ *
+ */
+
+#include "eeprom_stm32_defs.h"
+#if !defined(FEE_PAGE_SIZE) || !defined(FEE_PAGE_COUNT) || !defined(FEE_MCU_FLASH_SIZE) || !defined(FEE_PAGE_BASE_ADDRESS)
+# error "not implemented."
+#endif
+
+/* These bits are used for optimizing encoding of bytes, 0 and 1 */
+#define FEE_WORD_ENCODING 0x8000
+#define FEE_VALUE_NEXT 0x6000
+#define FEE_VALUE_RESERVED 0x4000
+#define FEE_VALUE_ENCODED 0x2000
+#define FEE_BYTE_RANGE 0x80
+
+/* Addressable range 16KByte: 0 <-> (0x1FFF << 1) */
+#define FEE_ADDRESS_MAX_SIZE 0x4000
+
+/* Flash word value after erase */
+#define FEE_EMPTY_WORD ((uint16_t)0xFFFF)
+
+/* Size of combined compacted eeprom and write log pages */
+#define FEE_DENSITY_MAX_SIZE (FEE_PAGE_COUNT * FEE_PAGE_SIZE)
+
+#ifndef FEE_MCU_FLASH_SIZE_IGNORE_CHECK /* *TODO: Get rid of this check */
+# if FEE_DENSITY_MAX_SIZE > (FEE_MCU_FLASH_SIZE * 1024)
+# pragma message STR(FEE_DENSITY_MAX_SIZE) " > " STR(FEE_MCU_FLASH_SIZE * 1024)
+# error emulated eeprom: FEE_DENSITY_MAX_SIZE is greater than available flash size
+# endif
+#endif
+
+/* Size of emulated eeprom */
+#ifdef FEE_DENSITY_BYTES
+# if (FEE_DENSITY_BYTES > FEE_DENSITY_MAX_SIZE)
+# pragma message STR(FEE_DENSITY_BYTES) " > " STR(FEE_DENSITY_MAX_SIZE)
+# error emulated eeprom: FEE_DENSITY_BYTES exceeds FEE_DENSITY_MAX_SIZE
+# endif
+# if (FEE_DENSITY_BYTES == FEE_DENSITY_MAX_SIZE)
+# pragma message STR(FEE_DENSITY_BYTES) " == " STR(FEE_DENSITY_MAX_SIZE)
+# warning emulated eeprom: FEE_DENSITY_BYTES leaves no room for a write log. This will greatly increase the flash wear rate!
+# endif
+# if FEE_DENSITY_BYTES > FEE_ADDRESS_MAX_SIZE
+# pragma message STR(FEE_DENSITY_BYTES) " > " STR(FEE_ADDRESS_MAX_SIZE)
+# error emulated eeprom: FEE_DENSITY_BYTES is greater than FEE_ADDRESS_MAX_SIZE allows
+# endif
+# if ((FEE_DENSITY_BYTES) % 2) == 1
+# error emulated eeprom: FEE_DENSITY_BYTES must be even
+# endif
+#else
+/* Default to half of allocated space used for emulated eeprom, half for write log */
+# define FEE_DENSITY_BYTES (FEE_PAGE_COUNT * FEE_PAGE_SIZE / 2)
+#endif
+
+/* Size of write log */
+#ifdef FEE_WRITE_LOG_BYTES
+# if ((FEE_DENSITY_BYTES + FEE_WRITE_LOG_BYTES) > FEE_DENSITY_MAX_SIZE)
+# pragma message STR(FEE_DENSITY_BYTES) " + " STR(FEE_WRITE_LOG_BYTES) " > " STR(FEE_DENSITY_MAX_SIZE)
+# error emulated eeprom: FEE_WRITE_LOG_BYTES exceeds remaining FEE_DENSITY_MAX_SIZE
+# endif
+# if ((FEE_WRITE_LOG_BYTES) % 2) == 1
+# error emulated eeprom: FEE_WRITE_LOG_BYTES must be even
+# endif
+#else
+/* Default to use all remaining space */
+# define FEE_WRITE_LOG_BYTES (FEE_PAGE_COUNT * FEE_PAGE_SIZE - FEE_DENSITY_BYTES)
+#endif
+
+/* Start of the emulated eeprom compacted flash area */
+#define FEE_COMPACTED_BASE_ADDRESS FEE_PAGE_BASE_ADDRESS
+/* End of the emulated eeprom compacted flash area */
+#define FEE_COMPACTED_LAST_ADDRESS (FEE_COMPACTED_BASE_ADDRESS + FEE_DENSITY_BYTES)
+/* Start of the emulated eeprom write log */
+#define FEE_WRITE_LOG_BASE_ADDRESS FEE_COMPACTED_LAST_ADDRESS
+/* End of the emulated eeprom write log */
+#define FEE_WRITE_LOG_LAST_ADDRESS (FEE_WRITE_LOG_BASE_ADDRESS + FEE_WRITE_LOG_BYTES)
+
+#if defined(DYNAMIC_KEYMAP_EEPROM_MAX_ADDR) && (DYNAMIC_KEYMAP_EEPROM_MAX_ADDR >= FEE_DENSITY_BYTES)
+# error emulated eeprom: DYNAMIC_KEYMAP_EEPROM_MAX_ADDR is greater than the FEE_DENSITY_BYTES available
+#endif
+
+/* In-memory contents of emulated eeprom for faster access */
+/* *TODO: Implement page swapping */
+static uint16_t WordBuf[FEE_DENSITY_BYTES / 2];
+static uint8_t *DataBuf = (uint8_t *)WordBuf;
+
+/* Pointer to the first available slot within the write log */
+static uint16_t *empty_slot;
+
+// #define DEBUG_EEPROM_OUTPUT
+
+/*
+ * Debug print utils
+ */
+
+#if defined(DEBUG_EEPROM_OUTPUT)
+
+# define debug_eeprom debug_enable
+# define eeprom_println(s) println(s)
+# define eeprom_printf(fmt, ...) xprintf(fmt, ##__VA_ARGS__);
+
+#else /* NO_DEBUG */
+
+# define debug_eeprom false
+# define eeprom_println(s)
+# define eeprom_printf(fmt, ...)
+
+#endif /* NO_DEBUG */
+
+void print_eeprom(void) {
+#ifndef NO_DEBUG
+ int empty_rows = 0;
+ for (uint16_t i = 0; i < FEE_DENSITY_BYTES; i++) {
+ if (i % 16 == 0) {
+ if (i >= FEE_DENSITY_BYTES - 16) {
+ /* Make sure we display the last row */
+ empty_rows = 0;
+ }
+ /* Check if this row is uninitialized */
+ ++empty_rows;
+ for (uint16_t j = 0; j < 16; j++) {
+ if (DataBuf[i + j]) {
+ empty_rows = 0;
+ break;
+ }
+ }
+ if (empty_rows > 1) {
+ /* Repeat empty row */
+ if (empty_rows == 2) {
+ /* Only display the first repeat empty row */
+ println("*");
+ }
+ i += 15;
+ continue;
+ }
+ xprintf("%04x", i);
+ }
+ if (i % 8 == 0) print(" ");
+
+ xprintf(" %02x", DataBuf[i]);
+ if ((i + 1) % 16 == 0) {
+ println("");
+ }
+ }
+#endif
+}
+
+uint16_t EEPROM_Init(void) {
+ /* Load emulated eeprom contents from compacted flash into memory */
+ uint16_t *src = (uint16_t *)FEE_COMPACTED_BASE_ADDRESS;
+ uint16_t *dest = (uint16_t *)DataBuf;
+ for (; src < (uint16_t *)FEE_COMPACTED_LAST_ADDRESS; ++src, ++dest) {
+ *dest = ~*src;
+ }
+
+ if (debug_eeprom) {
+ println("EEPROM_Init Compacted Pages:");
+ print_eeprom();
+ println("EEPROM_Init Write Log:");
+ }
+
+ /* Replay write log */
+ uint16_t *log_addr;
+ for (log_addr = (uint16_t *)FEE_WRITE_LOG_BASE_ADDRESS; log_addr < (uint16_t *)FEE_WRITE_LOG_LAST_ADDRESS; ++log_addr) {
+ uint16_t address = *log_addr;
+ if (address == FEE_EMPTY_WORD) {
+ break;
+ }
+ /* Check for lowest 128-bytes optimization */
+ if (!(address & FEE_WORD_ENCODING)) {
+ uint8_t bvalue = (uint8_t)address;
+ address >>= 8;
+ DataBuf[address] = bvalue;
+ eeprom_printf("DataBuf[0x%02x] = 0x%02x;\n", address, bvalue);
+ } else {
+ uint16_t wvalue;
+ /* Check if value is in next word */
+ if ((address & FEE_VALUE_NEXT) == FEE_VALUE_NEXT) {
+ /* Read value from next word */
+ if (++log_addr >= (uint16_t *)FEE_WRITE_LOG_LAST_ADDRESS) {
+ break;
+ }
+ wvalue = ~*log_addr;
+ if (!wvalue) {
+ eeprom_printf("Incomplete write at log_addr: 0x%04x;\n", (uint32_t)log_addr);
+ /* Possibly incomplete write. Ignore and continue */
+ continue;
+ }
+ address &= 0x1FFF;
+ address <<= 1;
+ /* Writes to addresses less than 128 are byte log entries */
+ address += FEE_BYTE_RANGE;
+ } else {
+ /* Reserved for future use */
+ if (address & FEE_VALUE_RESERVED) {
+ eeprom_printf("Reserved encoded value at log_addr: 0x%04x;\n", (uint32_t)log_addr);
+ continue;
+ }
+ /* Optimization for 0 or 1 values. */
+ wvalue = (address & FEE_VALUE_ENCODED) >> 13;
+ address &= 0x1FFF;
+ address <<= 1;
+ }
+ if (address < FEE_DENSITY_BYTES) {
+ eeprom_printf("DataBuf[0x%04x] = 0x%04x;\n", address, wvalue);
+ *(uint16_t *)(&DataBuf[address]) = wvalue;
+ } else {
+ eeprom_printf("DataBuf[0x%04x] cannot be set to 0x%04x [BAD ADDRESS]\n", address, wvalue);
+ }
+ }
+ }
+
+ empty_slot = log_addr;
+
+ if (debug_eeprom) {
+ println("EEPROM_Init Final DataBuf:");
+ print_eeprom();
+ }
+
+ return FEE_DENSITY_BYTES;
+}
+
+/* Clear flash contents (doesn't touch in-memory DataBuf) */
+static void eeprom_clear(void) {
+ FLASH_Unlock();
+
+ for (uint16_t page_num = 0; page_num < FEE_PAGE_COUNT; ++page_num) {
+ eeprom_printf("FLASH_ErasePage(0x%04x)\n", (uint32_t)(FEE_PAGE_BASE_ADDRESS + (page_num * FEE_PAGE_SIZE)));
+ FLASH_ErasePage(FEE_PAGE_BASE_ADDRESS + (page_num * FEE_PAGE_SIZE));
+ }
+
+ FLASH_Lock();
+
+ empty_slot = (uint16_t *)FEE_WRITE_LOG_BASE_ADDRESS;
+ eeprom_printf("eeprom_clear empty_slot: 0x%08x\n", (uint32_t)empty_slot);
+}
+
+/* Erase emulated eeprom */
+void EEPROM_Erase(void) {
+ eeprom_println("EEPROM_Erase");
+ /* Erase compacted pages and write log */
+ eeprom_clear();
+ /* re-initialize to reset DataBuf */
+ EEPROM_Init();
+}
+
+/* Compact write log */
+static uint8_t eeprom_compact(void) {
+ /* Erase compacted pages and write log */
+ eeprom_clear();
+
+ FLASH_Unlock();
+
+ FLASH_Status final_status = FLASH_COMPLETE;
+
+ /* Write emulated eeprom contents from memory to compacted flash */
+ uint16_t *src = (uint16_t *)DataBuf;
+ uintptr_t dest = FEE_COMPACTED_BASE_ADDRESS;
+ uint16_t value;
+ for (; dest < FEE_COMPACTED_LAST_ADDRESS; ++src, dest += 2) {
+ value = *src;
+ if (value) {
+ eeprom_printf("FLASH_ProgramHalfWord(0x%04x, 0x%04x)\n", (uint32_t)dest, ~value);
+ FLASH_Status status = FLASH_ProgramHalfWord(dest, ~value);
+ if (status != FLASH_COMPLETE) final_status = status;
+ }
+ }
+
+ FLASH_Lock();
+
+ if (debug_eeprom) {
+ println("eeprom_compacted:");
+ print_eeprom();
+ }
+
+ return final_status;
+}
+
+static uint8_t eeprom_write_direct_entry(uint16_t Address) {
+ /* Check if we can just write this directly to the compacted flash area */
+ uintptr_t directAddress = FEE_COMPACTED_BASE_ADDRESS + (Address & 0xFFFE);
+ if (*(uint16_t *)directAddress == FEE_EMPTY_WORD) {
+ /* Write the value directly to the compacted area without a log entry */
+ uint16_t value = ~*(uint16_t *)(&DataBuf[Address & 0xFFFE]);
+ /* Early exit if a write isn't needed */
+ if (value == FEE_EMPTY_WORD) return FLASH_COMPLETE;
+
+ FLASH_Unlock();
+
+ eeprom_printf("FLASH_ProgramHalfWord(0x%08x, 0x%04x) [DIRECT]\n", (uint32_t)directAddress, value);
+ FLASH_Status status = FLASH_ProgramHalfWord(directAddress, value);
+
+ FLASH_Lock();
+ return status;
+ }
+ return 0;
+}
+
+static uint8_t eeprom_write_log_word_entry(uint16_t Address) {
+ FLASH_Status final_status = FLASH_COMPLETE;
+
+ uint16_t value = *(uint16_t *)(&DataBuf[Address]);
+ eeprom_printf("eeprom_write_log_word_entry(0x%04x): 0x%04x\n", Address, value);
+
+ /* MSB signifies the lowest 128-byte optimization is not in effect */
+ uint16_t encoding = FEE_WORD_ENCODING;
+ uint8_t entry_size;
+ if (value <= 1) {
+ encoding |= value << 13;
+ entry_size = 2;
+ } else {
+ encoding |= FEE_VALUE_NEXT;
+ entry_size = 4;
+ /* Writes to addresses less than 128 are byte log entries */
+ Address -= FEE_BYTE_RANGE;
+ }
+
+ /* if we can't find an empty spot, we must compact emulated eeprom */
+ if (empty_slot > (uint16_t *)(FEE_WRITE_LOG_LAST_ADDRESS - entry_size)) {
+ /* compact the write log into the compacted flash area */
+ return eeprom_compact();
+ }
+
+ /* Word log writes should be word-aligned. Take back a bit */
+ Address >>= 1;
+ Address |= encoding;
+
+ /* ok we found a place let's write our data */
+ FLASH_Unlock();
+
+ /* address */
+ eeprom_printf("FLASH_ProgramHalfWord(0x%08x, 0x%04x)\n", (uint32_t)empty_slot, Address);
+ final_status = FLASH_ProgramHalfWord((uintptr_t)empty_slot++, Address);
+
+ /* value */
+ if (encoding == (FEE_WORD_ENCODING | FEE_VALUE_NEXT)) {
+ eeprom_printf("FLASH_ProgramHalfWord(0x%08x, 0x%04x)\n", (uint32_t)empty_slot, ~value);
+ FLASH_Status status = FLASH_ProgramHalfWord((uintptr_t)empty_slot++, ~value);
+ if (status != FLASH_COMPLETE) final_status = status;
+ }
+
+ FLASH_Lock();
+
+ return final_status;
+}
+
+static uint8_t eeprom_write_log_byte_entry(uint16_t Address) {
+ eeprom_printf("eeprom_write_log_byte_entry(0x%04x): 0x%02x\n", Address, DataBuf[Address]);
+
+ /* if couldn't find an empty spot, we must compact emulated eeprom */
+ if (empty_slot >= (uint16_t *)FEE_WRITE_LOG_LAST_ADDRESS) {
+ /* compact the write log into the compacted flash area */
+ return eeprom_compact();
+ }
+
+ /* ok we found a place let's write our data */
+ FLASH_Unlock();
+
+ /* Pack address and value into the same word */
+ uint16_t value = (Address << 8) | DataBuf[Address];
+
+ /* write to flash */
+ eeprom_printf("FLASH_ProgramHalfWord(0x%08x, 0x%04x)\n", (uint32_t)empty_slot, value);
+ FLASH_Status status = FLASH_ProgramHalfWord((uintptr_t)empty_slot++, value);
+
+ FLASH_Lock();
+
+ return status;
+}
+
+uint8_t EEPROM_WriteDataByte(uint16_t Address, uint8_t DataByte) {
+ /* if the address is out-of-bounds, do nothing */
+ if (Address >= FEE_DENSITY_BYTES) {
+ eeprom_printf("EEPROM_WriteDataByte(0x%04x, 0x%02x) [BAD ADDRESS]\n", Address, DataByte);
+ return FLASH_BAD_ADDRESS;
+ }
+
+ /* if the value is the same, don't bother writing it */
+ if (DataBuf[Address] == DataByte) {
+ eeprom_printf("EEPROM_WriteDataByte(0x%04x, 0x%02x) [SKIP SAME]\n", Address, DataByte);
+ return 0;
+ }
+
+ /* keep DataBuf cache in sync */
+ DataBuf[Address] = DataByte;
+ eeprom_printf("EEPROM_WriteDataByte DataBuf[0x%04x] = 0x%02x\n", Address, DataBuf[Address]);
+
+ /* perform the write into flash memory */
+ /* First, attempt to write directly into the compacted flash area */
+ FLASH_Status status = eeprom_write_direct_entry(Address);
+ if (!status) {
+ /* Otherwise append to the write log */
+ if (Address < FEE_BYTE_RANGE) {
+ status = eeprom_write_log_byte_entry(Address);
+ } else {
+ status = eeprom_write_log_word_entry(Address & 0xFFFE);
+ }
+ }
+ if (status != 0 && status != FLASH_COMPLETE) {
+ eeprom_printf("EEPROM_WriteDataByte [STATUS == %d]\n", status);
+ }
+ return status;
+}
+
+uint8_t EEPROM_WriteDataWord(uint16_t Address, uint16_t DataWord) {
+ /* if the address is out-of-bounds, do nothing */
+ if (Address >= FEE_DENSITY_BYTES) {
+ eeprom_printf("EEPROM_WriteDataWord(0x%04x, 0x%04x) [BAD ADDRESS]\n", Address, DataWord);
+ return FLASH_BAD_ADDRESS;
+ }
+
+ /* Check for word alignment */
+ FLASH_Status final_status = FLASH_COMPLETE;
+ if (Address % 2) {
+ final_status = EEPROM_WriteDataByte(Address, DataWord);
+ FLASH_Status status = EEPROM_WriteDataByte(Address + 1, DataWord >> 8);
+ if (status != FLASH_COMPLETE) final_status = status;
+ if (final_status != 0 && final_status != FLASH_COMPLETE) {
+ eeprom_printf("EEPROM_WriteDataWord [STATUS == %d]\n", final_status);
+ }
+ return final_status;
+ }
+
+ /* if the value is the same, don't bother writing it */
+ uint16_t oldValue = *(uint16_t *)(&DataBuf[Address]);
+ if (oldValue == DataWord) {
+ eeprom_printf("EEPROM_WriteDataWord(0x%04x, 0x%04x) [SKIP SAME]\n", Address, DataWord);
+ return 0;
+ }
+
+ /* keep DataBuf cache in sync */
+ *(uint16_t *)(&DataBuf[Address]) = DataWord;
+ eeprom_printf("EEPROM_WriteDataWord DataBuf[0x%04x] = 0x%04x\n", Address, *(uint16_t *)(&DataBuf[Address]));
+
+ /* perform the write into flash memory */
+ /* First, attempt to write directly into the compacted flash area */
+ final_status = eeprom_write_direct_entry(Address);
+ if (!final_status) {
+ /* Otherwise append to the write log */
+ /* Check if we need to fall back to byte write */
+ if (Address < FEE_BYTE_RANGE) {
+ final_status = FLASH_COMPLETE;
+ /* Only write a byte if it has changed */
+ if ((uint8_t)oldValue != (uint8_t)DataWord) {
+ final_status = eeprom_write_log_byte_entry(Address);
+ }
+ FLASH_Status status = FLASH_COMPLETE;
+ /* Only write a byte if it has changed */
+ if ((oldValue >> 8) != (DataWord >> 8)) {
+ status = eeprom_write_log_byte_entry(Address + 1);
+ }
+ if (status != FLASH_COMPLETE) final_status = status;
+ } else {
+ final_status = eeprom_write_log_word_entry(Address);
+ }
+ }
+ if (final_status != 0 && final_status != FLASH_COMPLETE) {
+ eeprom_printf("EEPROM_WriteDataWord [STATUS == %d]\n", final_status);
+ }
+ return final_status;
+}
+
+uint8_t EEPROM_ReadDataByte(uint16_t Address) {
+ uint8_t DataByte = 0xFF;
+
+ if (Address < FEE_DENSITY_BYTES) {
+ DataByte = DataBuf[Address];
+ }
+
+ eeprom_printf("EEPROM_ReadDataByte(0x%04x): 0x%02x\n", Address, DataByte);
+
+ return DataByte;
+}
+
+uint16_t EEPROM_ReadDataWord(uint16_t Address) {
+ uint16_t DataWord = 0xFFFF;
+
+ if (Address < FEE_DENSITY_BYTES - 1) {
+ /* Check word alignment */
+ if (Address % 2) {
+ DataWord = DataBuf[Address] | (DataBuf[Address + 1] << 8);
+ } else {
+ DataWord = *(uint16_t *)(&DataBuf[Address]);
+ }
+ }
+
+ eeprom_printf("EEPROM_ReadDataWord(0x%04x): 0x%04x\n", Address, DataWord);
+
+ return DataWord;
+}
+
+/*****************************************************************************
+ * Bind to eeprom_driver.c
+ *******************************************************************************/
+void eeprom_driver_init(void) { EEPROM_Init(); }
+
+void eeprom_driver_erase(void) { EEPROM_Erase(); }
+
+void eeprom_read_block(void *buf, const void *addr, size_t len) {
+ const uint8_t *src = (const uint8_t *)addr;
+ uint8_t * dest = (uint8_t *)buf;
+
+ /* Check word alignment */
+ if (len && (uintptr_t)src % 2) {
+ /* Read the unaligned first byte */
+ *dest++ = EEPROM_ReadDataByte((const uintptr_t)src++);
+ --len;
+ }
+
+ uint16_t value;
+ bool aligned = ((uintptr_t)dest % 2 == 0);
+ while (len > 1) {
+ value = EEPROM_ReadDataWord((const uintptr_t)((uint16_t *)src));
+ if (aligned) {
+ *(uint16_t *)dest = value;
+ dest += 2;
+ } else {
+ *dest++ = value;
+ *dest++ = value >> 8;
+ }
+ src += 2;
+ len -= 2;
+ }
+ if (len) {
+ *dest = EEPROM_ReadDataByte((const uintptr_t)src);
+ }
+}
+
+void eeprom_write_block(const void *buf, void *addr, size_t len) {
+ uint8_t * dest = (uint8_t *)addr;
+ const uint8_t *src = (const uint8_t *)buf;
+
+ /* Check word alignment */
+ if (len && (uintptr_t)dest % 2) {
+ /* Write the unaligned first byte */
+ EEPROM_WriteDataByte((uintptr_t)dest++, *src++);
+ --len;
+ }
+
+ uint16_t value;
+ bool aligned = ((uintptr_t)src % 2 == 0);
+ while (len > 1) {
+ if (aligned) {
+ value = *(uint16_t *)src;
+ } else {
+ value = *(uint8_t *)src | (*(uint8_t *)(src + 1) << 8);
+ }
+ EEPROM_WriteDataWord((uintptr_t)((uint16_t *)dest), value);
+ dest += 2;
+ src += 2;
+ len -= 2;
+ }
+
+ if (len) {
+ EEPROM_WriteDataByte((uintptr_t)dest, *src);
+ }
+}
diff --git a/platforms/chibios/eeprom_stm32.h b/platforms/chibios/eeprom_stm32.h
new file mode 100644
index 0000000000..8fcfb556b8
--- /dev/null
+++ b/platforms/chibios/eeprom_stm32.h
@@ -0,0 +1,33 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from http://engsta.com/stm32-flash-memory-eeprom-emulator/ by
+ * Artur F.
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ *
+ * This library assumes 8-bit data locations. To add a new MCU, please provide the flash
+ * page size and the total flash size in Kb. The number of available pages must be a multiple
+ * of 2. Only half of the pages account for the total EEPROM size.
+ * This library also assumes that the pages are not used by the firmware.
+ */
+
+#pragma once
+
+uint16_t EEPROM_Init(void);
+void EEPROM_Erase(void);
+uint8_t EEPROM_WriteDataByte(uint16_t Address, uint8_t DataByte);
+uint8_t EEPROM_WriteDataWord(uint16_t Address, uint16_t DataWord);
+uint8_t EEPROM_ReadDataByte(uint16_t Address);
+uint16_t EEPROM_ReadDataWord(uint16_t Address);
+
+void print_eeprom(void);
diff --git a/platforms/chibios/eeprom_stm32_defs.h b/platforms/chibios/eeprom_stm32_defs.h
new file mode 100644
index 0000000000..66904f247f
--- /dev/null
+++ b/platforms/chibios/eeprom_stm32_defs.h
@@ -0,0 +1,74 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <hal.h>
+
+#if !defined(FEE_PAGE_SIZE) || !defined(FEE_PAGE_COUNT)
+# if defined(STM32F103xB) || defined(STM32F042x6) || defined(GD32VF103C8) || defined(GD32VF103CB)
+# ifndef FEE_PAGE_SIZE
+# define FEE_PAGE_SIZE 0x400 // Page size = 1KByte
+# endif
+# ifndef FEE_PAGE_COUNT
+# define FEE_PAGE_COUNT 2 // How many pages are used
+# endif
+# elif defined(STM32F103xE) || defined(STM32F303xC) || defined(STM32F072xB) || defined(STM32F070xB)
+# ifndef FEE_PAGE_SIZE
+# define FEE_PAGE_SIZE 0x800 // Page size = 2KByte
+# endif
+# ifndef FEE_PAGE_COUNT
+# define FEE_PAGE_COUNT 4 // How many pages are used
+# endif
+# elif defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F405xG) || defined(STM32F411xE)
+# ifndef FEE_PAGE_SIZE
+# define FEE_PAGE_SIZE 0x4000 // Page size = 16KByte
+# endif
+# ifndef FEE_PAGE_COUNT
+# define FEE_PAGE_COUNT 1 // How many pages are used
+# endif
+# endif
+#endif
+
+#if !defined(FEE_MCU_FLASH_SIZE)
+# if defined(STM32F042x6)
+# define FEE_MCU_FLASH_SIZE 32 // Size in Kb
+# elif defined(GD32VF103C8)
+# define FEE_MCU_FLASH_SIZE 64 // Size in Kb
+# elif defined(STM32F103xB) || defined(STM32F072xB) || defined(STM32F070xB) || defined(GD32VF103CB)
+# define FEE_MCU_FLASH_SIZE 128 // Size in Kb
+# elif defined(STM32F303xC) || defined(STM32F401xC)
+# define FEE_MCU_FLASH_SIZE 256 // Size in Kb
+# elif defined(STM32F103xE) || defined(STM32F401xE) || defined(STM32F411xE)
+# define FEE_MCU_FLASH_SIZE 512 // Size in Kb
+# elif defined(STM32F405xG)
+# define FEE_MCU_FLASH_SIZE 1024 // Size in Kb
+# endif
+#endif
+
+/* Start of the emulated eeprom */
+#if !defined(FEE_PAGE_BASE_ADDRESS)
+# if defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F405xG) || defined(STM32F411xE)
+# ifndef FEE_PAGE_BASE_ADDRESS
+# define FEE_PAGE_BASE_ADDRESS 0x08004000 // bodge to force 2nd 16k page
+# endif
+# else
+# ifndef FEE_FLASH_BASE
+# define FEE_FLASH_BASE 0x8000000
+# endif
+/* Default to end of flash */
+# define FEE_PAGE_BASE_ADDRESS ((uintptr_t)(FEE_FLASH_BASE) + FEE_MCU_FLASH_SIZE * 1024 - (FEE_PAGE_COUNT * FEE_PAGE_SIZE))
+# endif
+#endif
diff --git a/platforms/chibios/eeprom_teensy.c b/platforms/chibios/eeprom_teensy.c
new file mode 100644
index 0000000000..97da6f9e14
--- /dev/null
+++ b/platforms/chibios/eeprom_teensy.c
@@ -0,0 +1,795 @@
+#include <ch.h>
+#include <hal.h>
+
+#include "eeconfig.h"
+
+/*************************************/
+/* Hardware backend */
+/* */
+/* Code from PJRC/Teensyduino */
+/*************************************/
+
+/* Teensyduino Core Library
+ * http://www.pjrc.com/teensy/
+ * Copyright (c) 2013 PJRC.COM, LLC.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * 1. The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * 2. If the Software is incorporated into a build system that allows
+ * selection among a list of target devices, then similar target
+ * devices manufactured by PJRC.COM must be included in the list of
+ * target devices and selectable in the same manner.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#define SMC_PMSTAT_RUN ((uint8_t)0x01)
+#define SMC_PMSTAT_HSRUN ((uint8_t)0x80)
+
+#define F_CPU KINETIS_SYSCLK_FREQUENCY
+
+static inline int kinetis_hsrun_disable(void) {
+#if defined(MK66F18)
+ if (SMC->PMSTAT == SMC_PMSTAT_HSRUN) {
+// First, reduce the CPU clock speed, but do not change
+// the peripheral speed (F_BUS). Serial1 & Serial2 baud
+// rates will be impacted, but most other peripherals
+// will continue functioning at the same speed.
+# if F_CPU == 256000000 && F_BUS == 64000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 3, 1, 7); // TODO: TEST
+# elif F_CPU == 256000000 && F_BUS == 128000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 1, 1, 7); // TODO: TEST
+# elif F_CPU == 240000000 && F_BUS == 60000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 3, 1, 7); // ok
+# elif F_CPU == 240000000 && F_BUS == 80000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(2, 2, 2, 8); // ok
+# elif F_CPU == 240000000 && F_BUS == 120000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 1, 1, 7); // ok
+# elif F_CPU == 216000000 && F_BUS == 54000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 3, 1, 7); // ok
+# elif F_CPU == 216000000 && F_BUS == 72000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(2, 2, 2, 8); // ok
+# elif F_CPU == 216000000 && F_BUS == 108000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 1, 1, 7); // ok
+# elif F_CPU == 192000000 && F_BUS == 48000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 3, 1, 7); // ok
+# elif F_CPU == 192000000 && F_BUS == 64000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(2, 2, 2, 8); // ok
+# elif F_CPU == 192000000 && F_BUS == 96000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 1, 1, 7); // ok
+# elif F_CPU == 180000000 && F_BUS == 60000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(2, 2, 2, 8); // ok
+# elif F_CPU == 180000000 && F_BUS == 90000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 1, 1, 7); // ok
+# elif F_CPU == 168000000 && F_BUS == 56000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(2, 2, 2, 5); // ok
+# elif F_CPU == 144000000 && F_BUS == 48000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(2, 2, 2, 5); // ok
+# elif F_CPU == 144000000 && F_BUS == 72000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(1, 1, 1, 5); // ok
+# elif F_CPU == 120000000 && F_BUS == 60000000
+ SIM->CLKDIV1 = SIM_CLKDIV1_OUTDIV1(KINETIS_CLKDIV1_OUTDIV1 - 1) | SIM_CLKDIV1_OUTDIV2(KINETIS_CLKDIV1_OUTDIV2 - 1) |
+# if defined(MK66F18)
+ SIM_CLKDIV1_OUTDIV3(KINETIS_CLKDIV1_OUTDIV3 - 1) |
+# endif
+ SIM_CLKDIV1_OUTDIV4(KINETIS_CLKDIV1_OUTDIV4 - 1);
+# else
+ return 0;
+# endif
+ // Then turn off HSRUN mode
+ SMC->PMCTRL = SMC_PMCTRL_RUNM_SET(0);
+ while (SMC->PMSTAT == SMC_PMSTAT_HSRUN)
+ ; // wait
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+static inline int kinetis_hsrun_enable(void) {
+#if defined(MK66F18)
+ if (SMC->PMSTAT == SMC_PMSTAT_RUN) {
+ // Turn HSRUN mode on
+ SMC->PMCTRL = SMC_PMCTRL_RUNM_SET(3);
+ while (SMC->PMSTAT != SMC_PMSTAT_HSRUN) {
+ ;
+ } // wait
+// Then configure clock for full speed
+# if F_CPU == 256000000 && F_BUS == 64000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 3, 0, 7);
+# elif F_CPU == 256000000 && F_BUS == 128000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 1, 0, 7);
+# elif F_CPU == 240000000 && F_BUS == 60000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 3, 0, 7);
+# elif F_CPU == 240000000 && F_BUS == 80000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 2, 0, 7);
+# elif F_CPU == 240000000 && F_BUS == 120000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 1, 0, 7);
+# elif F_CPU == 216000000 && F_BUS == 54000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 3, 0, 7);
+# elif F_CPU == 216000000 && F_BUS == 72000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 2, 0, 7);
+# elif F_CPU == 216000000 && F_BUS == 108000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 1, 0, 7);
+# elif F_CPU == 192000000 && F_BUS == 48000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 3, 0, 6);
+# elif F_CPU == 192000000 && F_BUS == 64000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 2, 0, 6);
+# elif F_CPU == 192000000 && F_BUS == 96000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 1, 0, 6);
+# elif F_CPU == 180000000 && F_BUS == 60000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 2, 0, 6);
+# elif F_CPU == 180000000 && F_BUS == 90000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 1, 0, 6);
+# elif F_CPU == 168000000 && F_BUS == 56000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 2, 0, 5);
+# elif F_CPU == 144000000 && F_BUS == 48000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 2, 0, 4);
+# elif F_CPU == 144000000 && F_BUS == 72000000
+ SIM_CLKDIV1 = SIM_CLKDIV1_OUTDIVS(0, 1, 0, 4);
+# elif F_CPU == 120000000 && F_BUS == 60000000
+ SIM->CLKDIV1 = SIM_CLKDIV1_OUTDIV1(KINETIS_CLKDIV1_OUTDIV1 - 1) | SIM_CLKDIV1_OUTDIV2(KINETIS_CLKDIV1_OUTDIV2 - 1) |
+# if defined(MK66F18)
+ SIM_CLKDIV1_OUTDIV3(KINETIS_CLKDIV1_OUTDIV3 - 1) |
+# endif
+ SIM_CLKDIV1_OUTDIV4(KINETIS_CLKDIV1_OUTDIV4 - 1);
+# else
+ return 0;
+# endif
+ return 1;
+ }
+#endif
+ return 0;
+}
+
+#if defined(K20x) || defined(MK66F18) /* chip selection */
+/* Teensy 3.0, 3.1, 3.2; mchck; infinity keyboard */
+
+// The EEPROM is really RAM with a hardware-based backup system to
+// flash memory. Selecting a smaller size EEPROM allows more wear
+// leveling, for higher write endurance. If you edit this file,
+// set this to the smallest size your application can use. Also,
+// due to Freescale's implementation, writing 16 or 32 bit words
+// (aligned to 2 or 4 byte boundaries) has twice the endurance
+// compared to writing 8 bit bytes.
+//
+# ifndef EEPROM_SIZE
+# define EEPROM_SIZE 32
+# endif
+
+/*
+ ^^^ Here be dragons:
+ NXP AppNote AN4282 section 3.1 states that partitioning must only be done once.
+ Once EEPROM partitioning is done, the size is locked to this initial configuration.
+ Attempts to modify the EEPROM_SIZE setting may brick your board.
+*/
+
+// Writing unaligned 16 or 32 bit data is handled automatically when
+// this is defined, but at a cost of extra code size. Without this,
+// any unaligned write will cause a hard fault exception! If you're
+// absolutely sure all 16 and 32 bit writes will be aligned, you can
+// remove the extra unnecessary code.
+//
+# define HANDLE_UNALIGNED_WRITES
+
+# if defined(K20x)
+# define EEPROM_MAX 2048
+# define EEPARTITION 0x03 // all 32K dataflash for EEPROM, none for Data
+# define EEESPLIT 0x30 // must be 0x30 on these chips
+# elif defined(MK66F18)
+# define EEPROM_MAX 4096
+# define EEPARTITION 0x05 // 128K dataflash for EEPROM, 128K for Data
+# define EEESPLIT 0x10 // best endurance: 0x00 = first 12%, 0x10 = first 25%, 0x30 = all equal
+# endif
+
+// Minimum EEPROM Endurance
+// ------------------------
+# if (EEPROM_SIZE == 4096)
+# define EEESIZE 0x02
+# elif (EEPROM_SIZE == 2048) // 35000 writes/byte or 70000 writes/word
+# define EEESIZE 0x03
+# elif (EEPROM_SIZE == 1024) // 75000 writes/byte or 150000 writes/word
+# define EEESIZE 0x04
+# elif (EEPROM_SIZE == 512) // 155000 writes/byte or 310000 writes/word
+# define EEESIZE 0x05
+# elif (EEPROM_SIZE == 256) // 315000 writes/byte or 630000 writes/word
+# define EEESIZE 0x06
+# elif (EEPROM_SIZE == 128) // 635000 writes/byte or 1270000 writes/word
+# define EEESIZE 0x07
+# elif (EEPROM_SIZE == 64) // 1275000 writes/byte or 2550000 writes/word
+# define EEESIZE 0x08
+# elif (EEPROM_SIZE == 32) // 2555000 writes/byte or 5110000 writes/word
+# define EEESIZE 0x09
+# endif
+
+/** \brief eeprom initialization
+ *
+ * FIXME: needs doc
+ */
+void eeprom_initialize(void) {
+ uint32_t count = 0;
+ uint16_t do_flash_cmd[] = {0xf06f, 0x037f, 0x7003, 0x7803, 0xf013, 0x0f80, 0xd0fb, 0x4770};
+ uint8_t status;
+
+ if (FTFL->FCNFG & FTFL_FCNFG_RAMRDY) {
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+
+ // FlexRAM is configured as traditional RAM
+ // We need to reconfigure for EEPROM usage
+ kinetis_hsrun_disable();
+ FTFL->FCCOB0 = 0x80; // PGMPART = Program Partition Command
+ FTFL->FCCOB3 = 0;
+ FTFL->FCCOB4 = EEESPLIT | EEESIZE;
+ FTFL->FCCOB5 = EEPARTITION;
+ __disable_irq();
+ // do_flash_cmd() must execute from RAM. Luckily the C syntax is simple...
+ (*((void (*)(volatile uint8_t *))((uint32_t)do_flash_cmd | 1)))(&(FTFL->FSTAT));
+ __enable_irq();
+ kinetis_hsrun_enable();
+ status = FTFL->FSTAT;
+ if (status & (FTFL_FSTAT_RDCOLERR | FTFL_FSTAT_ACCERR | FTFL_FSTAT_FPVIOL)) {
+ FTFL->FSTAT = (status & (FTFL_FSTAT_RDCOLERR | FTFL_FSTAT_ACCERR | FTFL_FSTAT_FPVIOL));
+ return; // error
+ }
+ }
+ // wait for eeprom to become ready (is this really necessary?)
+ while (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) {
+ if (++count > 200000) break;
+ }
+}
+
+# define FlexRAM ((volatile uint8_t *)0x14000000)
+
+/** \brief eeprom read byte
+ *
+ * FIXME: needs doc
+ */
+uint8_t eeprom_read_byte(const uint8_t *addr) {
+ uint32_t offset = (uint32_t)addr;
+ if (offset >= EEPROM_SIZE) return 0;
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+ return FlexRAM[offset];
+}
+
+/** \brief eeprom read word
+ *
+ * FIXME: needs doc
+ */
+uint16_t eeprom_read_word(const uint16_t *addr) {
+ uint32_t offset = (uint32_t)addr;
+ if (offset >= EEPROM_SIZE - 1) return 0;
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+ return *(uint16_t *)(&FlexRAM[offset]);
+}
+
+/** \brief eeprom read dword
+ *
+ * FIXME: needs doc
+ */
+uint32_t eeprom_read_dword(const uint32_t *addr) {
+ uint32_t offset = (uint32_t)addr;
+ if (offset >= EEPROM_SIZE - 3) return 0;
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+ return *(uint32_t *)(&FlexRAM[offset]);
+}
+
+/** \brief eeprom read block
+ *
+ * FIXME: needs doc
+ */
+void eeprom_read_block(void *buf, const void *addr, uint32_t len) {
+ uint32_t offset = (uint32_t)addr;
+ uint8_t *dest = (uint8_t *)buf;
+ uint32_t end = offset + len;
+
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+ if (end > EEPROM_SIZE) end = EEPROM_SIZE;
+ while (offset < end) {
+ *dest++ = FlexRAM[offset++];
+ }
+}
+
+/** \brief eeprom is ready
+ *
+ * FIXME: needs doc
+ */
+int eeprom_is_ready(void) { return (FTFL->FCNFG & FTFL_FCNFG_EEERDY) ? 1 : 0; }
+
+/** \brief flexram wait
+ *
+ * FIXME: needs doc
+ */
+static void flexram_wait(void) {
+ while (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) {
+ // TODO: timeout
+ }
+}
+
+/** \brief eeprom_write_byte
+ *
+ * FIXME: needs doc
+ */
+void eeprom_write_byte(uint8_t *addr, uint8_t value) {
+ uint32_t offset = (uint32_t)addr;
+
+ if (offset >= EEPROM_SIZE) return;
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+ if (FlexRAM[offset] != value) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ FlexRAM[offset] = value;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+}
+
+/** \brief eeprom write word
+ *
+ * FIXME: needs doc
+ */
+void eeprom_write_word(uint16_t *addr, uint16_t value) {
+ uint32_t offset = (uint32_t)addr;
+
+ if (offset >= EEPROM_SIZE - 1) return;
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+# ifdef HANDLE_UNALIGNED_WRITES
+ if ((offset & 1) == 0) {
+# endif
+ if (*(uint16_t *)(&FlexRAM[offset]) != value) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ *(uint16_t *)(&FlexRAM[offset]) = value;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+# ifdef HANDLE_UNALIGNED_WRITES
+ } else {
+ if (FlexRAM[offset] != value) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ FlexRAM[offset] = value;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ if (FlexRAM[offset + 1] != (value >> 8)) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ FlexRAM[offset + 1] = value >> 8;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ }
+# endif
+}
+
+/** \brief eeprom write dword
+ *
+ * FIXME: needs doc
+ */
+void eeprom_write_dword(uint32_t *addr, uint32_t value) {
+ uint32_t offset = (uint32_t)addr;
+
+ if (offset >= EEPROM_SIZE - 3) return;
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+# ifdef HANDLE_UNALIGNED_WRITES
+ switch (offset & 3) {
+ case 0:
+# endif
+ if (*(uint32_t *)(&FlexRAM[offset]) != value) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ *(uint32_t *)(&FlexRAM[offset]) = value;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ return;
+# ifdef HANDLE_UNALIGNED_WRITES
+ case 2:
+ if (*(uint16_t *)(&FlexRAM[offset]) != value) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ *(uint16_t *)(&FlexRAM[offset]) = value;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ if (*(uint16_t *)(&FlexRAM[offset + 2]) != (value >> 16)) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ *(uint16_t *)(&FlexRAM[offset + 2]) = value >> 16;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ return;
+ default:
+ if (FlexRAM[offset] != value) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ FlexRAM[offset] = value;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ if (*(uint16_t *)(&FlexRAM[offset + 1]) != (value >> 8)) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ *(uint16_t *)(&FlexRAM[offset + 1]) = value >> 8;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ if (FlexRAM[offset + 3] != (value >> 24)) {
+ kinetis_hsrun_disable();
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ FlexRAM[offset + 3] = value >> 24;
+ flexram_wait();
+ kinetis_hsrun_enable();
+ }
+ }
+# endif
+}
+
+/** \brief eeprom write block
+ *
+ * FIXME: needs doc
+ */
+void eeprom_write_block(const void *buf, void *addr, uint32_t len) {
+ uint32_t offset = (uint32_t)addr;
+ const uint8_t *src = (const uint8_t *)buf;
+
+ if (offset >= EEPROM_SIZE) return;
+ if (!(FTFL->FCNFG & FTFL_FCNFG_EEERDY)) eeprom_initialize();
+ if (len >= EEPROM_SIZE) len = EEPROM_SIZE;
+ if (offset + len >= EEPROM_SIZE) len = EEPROM_SIZE - offset;
+ kinetis_hsrun_disable();
+ while (len > 0) {
+ uint32_t lsb = offset & 3;
+ if (lsb == 0 && len >= 4) {
+ // write aligned 32 bits
+ uint32_t val32;
+ val32 = *src++;
+ val32 |= (*src++ << 8);
+ val32 |= (*src++ << 16);
+ val32 |= (*src++ << 24);
+ if (*(uint32_t *)(&FlexRAM[offset]) != val32) {
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ *(uint32_t *)(&FlexRAM[offset]) = val32;
+ flexram_wait();
+ }
+ offset += 4;
+ len -= 4;
+ } else if ((lsb == 0 || lsb == 2) && len >= 2) {
+ // write aligned 16 bits
+ uint16_t val16;
+ val16 = *src++;
+ val16 |= (*src++ << 8);
+ if (*(uint16_t *)(&FlexRAM[offset]) != val16) {
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ *(uint16_t *)(&FlexRAM[offset]) = val16;
+ flexram_wait();
+ }
+ offset += 2;
+ len -= 2;
+ } else {
+ // write 8 bits
+ uint8_t val8 = *src++;
+ if (FlexRAM[offset] != val8) {
+ uint8_t stat = FTFL->FSTAT & 0x70;
+ if (stat) FTFL->FSTAT = stat;
+ FlexRAM[offset] = val8;
+ flexram_wait();
+ }
+ offset++;
+ len--;
+ }
+ }
+ kinetis_hsrun_enable();
+}
+
+/*
+void do_flash_cmd(volatile uint8_t *fstat)
+{
+ *fstat = 0x80;
+ while ((*fstat & 0x80) == 0) ; // wait
+}
+00000000 <do_flash_cmd>:
+ 0: f06f 037f mvn.w r3, #127 ; 0x7f
+ 4: 7003 strb r3, [r0, #0]
+ 6: 7803 ldrb r3, [r0, #0]
+ 8: f013 0f80 tst.w r3, #128 ; 0x80
+ c: d0fb beq.n 6 <do_flash_cmd+0x6>
+ e: 4770 bx lr
+*/
+
+#elif defined(KL2x) /* chip selection */
+/* Teensy LC (emulated) */
+
+# define SYMVAL(sym) (uint32_t)(((uint8_t *)&(sym)) - ((uint8_t *)0))
+
+extern uint32_t __eeprom_workarea_start__;
+extern uint32_t __eeprom_workarea_end__;
+
+# define EEPROM_SIZE 128
+
+static uint32_t flashend = 0;
+
+void eeprom_initialize(void) {
+ const uint16_t *p = (uint16_t *)SYMVAL(__eeprom_workarea_start__);
+
+ do {
+ if (*p++ == 0xFFFF) {
+ flashend = (uint32_t)(p - 2);
+ return;
+ }
+ } while (p < (uint16_t *)SYMVAL(__eeprom_workarea_end__));
+ flashend = (uint32_t)(p - 1);
+}
+
+uint8_t eeprom_read_byte(const uint8_t *addr) {
+ uint32_t offset = (uint32_t)addr;
+ const uint16_t *p = (uint16_t *)SYMVAL(__eeprom_workarea_start__);
+ const uint16_t *end = (const uint16_t *)((uint32_t)flashend);
+ uint16_t val;
+ uint8_t data = 0xFF;
+
+ if (!end) {
+ eeprom_initialize();
+ end = (const uint16_t *)((uint32_t)flashend);
+ }
+ if (offset < EEPROM_SIZE) {
+ while (p <= end) {
+ val = *p++;
+ if ((val & 255) == offset) data = val >> 8;
+ }
+ }
+ return data;
+}
+
+static void flash_write(const uint16_t *code, uint32_t addr, uint32_t data) {
+ // with great power comes great responsibility....
+ uint32_t stat;
+ *(uint32_t *)&(FTFA->FCCOB3) = 0x06000000 | (addr & 0x00FFFFFC);
+ *(uint32_t *)&(FTFA->FCCOB7) = data;
+ __disable_irq();
+ (*((void (*)(volatile uint8_t *))((uint32_t)code | 1)))(&(FTFA->FSTAT));
+ __enable_irq();
+ stat = FTFA->FSTAT & (FTFA_FSTAT_RDCOLERR | FTFA_FSTAT_ACCERR | FTFA_FSTAT_FPVIOL);
+ if (stat) {
+ FTFA->FSTAT = stat;
+ }
+ MCM->PLACR |= MCM_PLACR_CFCC;
+}
+
+void eeprom_write_byte(uint8_t *addr, uint8_t data) {
+ uint32_t offset = (uint32_t)addr;
+ const uint16_t *p, *end = (const uint16_t *)((uint32_t)flashend);
+ uint32_t i, val, flashaddr;
+ uint16_t do_flash_cmd[] = {0x2380, 0x7003, 0x7803, 0xb25b, 0x2b00, 0xdafb, 0x4770};
+ uint8_t buf[EEPROM_SIZE];
+
+ if (offset >= EEPROM_SIZE) return;
+ if (!end) {
+ eeprom_initialize();
+ end = (const uint16_t *)((uint32_t)flashend);
+ }
+ if (++end < (uint16_t *)SYMVAL(__eeprom_workarea_end__)) {
+ val = (data << 8) | offset;
+ flashaddr = (uint32_t)end;
+ flashend = flashaddr;
+ if ((flashaddr & 2) == 0) {
+ val |= 0xFFFF0000;
+ } else {
+ val <<= 16;
+ val |= 0x0000FFFF;
+ }
+ flash_write(do_flash_cmd, flashaddr, val);
+ } else {
+ for (i = 0; i < EEPROM_SIZE; i++) {
+ buf[i] = 0xFF;
+ }
+ val = 0;
+ for (p = (uint16_t *)SYMVAL(__eeprom_workarea_start__); p < (uint16_t *)SYMVAL(__eeprom_workarea_end__); p++) {
+ val = *p;
+ if ((val & 255) < EEPROM_SIZE) {
+ buf[val & 255] = val >> 8;
+ }
+ }
+ buf[offset] = data;
+ for (flashaddr = (uint32_t)(uint16_t *)SYMVAL(__eeprom_workarea_start__); flashaddr < (uint32_t)(uint16_t *)SYMVAL(__eeprom_workarea_end__); flashaddr += 1024) {
+ *(uint32_t *)&(FTFA->FCCOB3) = 0x09000000 | flashaddr;
+ __disable_irq();
+ (*((void (*)(volatile uint8_t *))((uint32_t)do_flash_cmd | 1)))(&(FTFA->FSTAT));
+ __enable_irq();
+ val = FTFA->FSTAT & (FTFA_FSTAT_RDCOLERR | FTFA_FSTAT_ACCERR | FTFA_FSTAT_FPVIOL);
+ ;
+ if (val) FTFA->FSTAT = val;
+ MCM->PLACR |= MCM_PLACR_CFCC;
+ }
+ flashaddr = (uint32_t)(uint16_t *)SYMVAL(__eeprom_workarea_start__);
+ for (i = 0; i < EEPROM_SIZE; i++) {
+ if (buf[i] == 0xFF) continue;
+ if ((flashaddr & 2) == 0) {
+ val = (buf[i] << 8) | i;
+ } else {
+ val = val | (buf[i] << 24) | (i << 16);
+ flash_write(do_flash_cmd, flashaddr, val);
+ }
+ flashaddr += 2;
+ }
+ flashend = flashaddr;
+ if ((flashaddr & 2)) {
+ val |= 0xFFFF0000;
+ flash_write(do_flash_cmd, flashaddr, val);
+ }
+ }
+}
+
+/*
+void do_flash_cmd(volatile uint8_t *fstat)
+{
+ *fstat = 0x80;
+ while ((*fstat & 0x80) == 0) ; // wait
+}
+00000000 <do_flash_cmd>:
+ 0: 2380 movs r3, #128 ; 0x80
+ 2: 7003 strb r3, [r0, #0]
+ 4: 7803 ldrb r3, [r0, #0]
+ 6: b25b sxtb r3, r3
+ 8: 2b00 cmp r3, #0
+ a: dafb bge.n 4 <do_flash_cmd+0x4>
+ c: 4770 bx lr
+*/
+
+uint16_t eeprom_read_word(const uint16_t *addr) {
+ const uint8_t *p = (const uint8_t *)addr;
+ return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8);
+}
+
+uint32_t eeprom_read_dword(const uint32_t *addr) {
+ const uint8_t *p = (const uint8_t *)addr;
+ return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8) | (eeprom_read_byte(p + 2) << 16) | (eeprom_read_byte(p + 3) << 24);
+}
+
+void eeprom_read_block(void *buf, const void *addr, uint32_t len) {
+ const uint8_t *p = (const uint8_t *)addr;
+ uint8_t * dest = (uint8_t *)buf;
+ while (len--) {
+ *dest++ = eeprom_read_byte(p++);
+ }
+}
+
+int eeprom_is_ready(void) { return 1; }
+
+void eeprom_write_word(uint16_t *addr, uint16_t value) {
+ uint8_t *p = (uint8_t *)addr;
+ eeprom_write_byte(p++, value);
+ eeprom_write_byte(p, value >> 8);
+}
+
+void eeprom_write_dword(uint32_t *addr, uint32_t value) {
+ uint8_t *p = (uint8_t *)addr;
+ eeprom_write_byte(p++, value);
+ eeprom_write_byte(p++, value >> 8);
+ eeprom_write_byte(p++, value >> 16);
+ eeprom_write_byte(p, value >> 24);
+}
+
+void eeprom_write_block(const void *buf, void *addr, uint32_t len) {
+ uint8_t * p = (uint8_t *)addr;
+ const uint8_t *src = (const uint8_t *)buf;
+ while (len--) {
+ eeprom_write_byte(p++, *src++);
+ }
+}
+
+#else
+// No EEPROM supported, so emulate it
+
+# ifndef EEPROM_SIZE
+# include "eeconfig.h"
+# define EEPROM_SIZE (((EECONFIG_SIZE + 3) / 4) * 4) // based off eeconfig's current usage, aligned to 4-byte sizes, to deal with LTO
+# endif
+__attribute__((aligned(4))) static uint8_t buffer[EEPROM_SIZE];
+
+uint8_t eeprom_read_byte(const uint8_t *addr) {
+ uint32_t offset = (uint32_t)addr;
+ return buffer[offset];
+}
+
+void eeprom_write_byte(uint8_t *addr, uint8_t value) {
+ uint32_t offset = (uint32_t)addr;
+ buffer[offset] = value;
+}
+
+uint16_t eeprom_read_word(const uint16_t *addr) {
+ const uint8_t *p = (const uint8_t *)addr;
+ return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8);
+}
+
+uint32_t eeprom_read_dword(const uint32_t *addr) {
+ const uint8_t *p = (const uint8_t *)addr;
+ return eeprom_read_byte(p) | (eeprom_read_byte(p + 1) << 8) | (eeprom_read_byte(p + 2) << 16) | (eeprom_read_byte(p + 3) << 24);
+}
+
+void eeprom_read_block(void *buf, const void *addr, size_t len) {
+ const uint8_t *p = (const uint8_t *)addr;
+ uint8_t * dest = (uint8_t *)buf;
+ while (len--) {
+ *dest++ = eeprom_read_byte(p++);
+ }
+}
+
+void eeprom_write_word(uint16_t *addr, uint16_t value) {
+ uint8_t *p = (uint8_t *)addr;
+ eeprom_write_byte(p++, value);
+ eeprom_write_byte(p, value >> 8);
+}
+
+void eeprom_write_dword(uint32_t *addr, uint32_t value) {
+ uint8_t *p = (uint8_t *)addr;
+ eeprom_write_byte(p++, value);
+ eeprom_write_byte(p++, value >> 8);
+ eeprom_write_byte(p++, value >> 16);
+ eeprom_write_byte(p, value >> 24);
+}
+
+void eeprom_write_block(const void *buf, void *addr, size_t len) {
+ uint8_t * p = (uint8_t *)addr;
+ const uint8_t *src = (const uint8_t *)buf;
+ while (len--) {
+ eeprom_write_byte(p++, *src++);
+ }
+}
+
+#endif /* chip selection */
+// The update functions just calls write for now, but could probably be optimized
+
+void eeprom_update_byte(uint8_t *addr, uint8_t value) { eeprom_write_byte(addr, value); }
+
+void eeprom_update_word(uint16_t *addr, uint16_t value) {
+ uint8_t *p = (uint8_t *)addr;
+ eeprom_write_byte(p++, value);
+ eeprom_write_byte(p, value >> 8);
+}
+
+void eeprom_update_dword(uint32_t *addr, uint32_t value) {
+ uint8_t *p = (uint8_t *)addr;
+ eeprom_write_byte(p++, value);
+ eeprom_write_byte(p++, value >> 8);
+ eeprom_write_byte(p++, value >> 16);
+ eeprom_write_byte(p, value >> 24);
+}
+
+void eeprom_update_block(const void *buf, void *addr, size_t len) {
+ uint8_t * p = (uint8_t *)addr;
+ const uint8_t *src = (const uint8_t *)buf;
+ while (len--) {
+ eeprom_write_byte(p++, *src++);
+ }
+}
diff --git a/platforms/chibios/flash.mk b/platforms/chibios/flash.mk
index c0b32c2f2b..31f69595da 100644
--- a/platforms/chibios/flash.mk
+++ b/platforms/chibios/flash.mk
@@ -82,6 +82,8 @@ else ifeq ($(strip $(MCU_FAMILY)),MIMXRT1062)
$(UNSYNC_OUTPUT_CMD) && $(call EXEC_TEENSY)
else ifeq ($(strip $(MCU_FAMILY)),STM32)
$(UNSYNC_OUTPUT_CMD) && $(call EXEC_DFU_UTIL)
+else ifeq ($(strip $(MCU_FAMILY)),GD32V)
+ $(UNSYNC_OUTPUT_CMD) && $(call EXEC_DFU_UTIL)
else
$(PRINT_OK); $(SILENT) || printf "$(MSG_FLASH_BOOTLOADER)"
endif
diff --git a/platforms/chibios/flash_stm32.c b/platforms/chibios/flash_stm32.c
new file mode 100644
index 0000000000..72c41b8b78
--- /dev/null
+++ b/platforms/chibios/flash_stm32.c
@@ -0,0 +1,208 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and
+ * https://github.com/leaflabs/libmaple
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ */
+
+#include <hal.h>
+#include "flash_stm32.h"
+
+#if defined(STM32F1XX)
+# define FLASH_SR_WRPERR FLASH_SR_WRPRTERR
+#endif
+
+#if defined(MCU_GD32V)
+/* GigaDevice GD32VF103 is a STM32F103 clone at heart. */
+# include "gd32v_compatibility.h"
+#endif
+
+#if defined(STM32F4XX)
+# define FLASH_SR_PGERR (FLASH_SR_PGSERR | FLASH_SR_PGPERR | FLASH_SR_PGAERR)
+
+# define FLASH_KEY1 0x45670123U
+# define FLASH_KEY2 0xCDEF89ABU
+
+static uint8_t ADDR2PAGE(uint32_t Page_Address) {
+ switch (Page_Address) {
+ case 0x08000000 ... 0x08003FFF:
+ return 0;
+ case 0x08004000 ... 0x08007FFF:
+ return 1;
+ case 0x08008000 ... 0x0800BFFF:
+ return 2;
+ case 0x0800C000 ... 0x0800FFFF:
+ return 3;
+ }
+
+ // TODO: bad times...
+ return 7;
+}
+#endif
+
+/* Delay definition */
+#define EraseTimeout ((uint32_t)0x00000FFF)
+#define ProgramTimeout ((uint32_t)0x0000001F)
+
+#define ASSERT(exp) (void)((0))
+
+/**
+ * @brief Inserts a time delay.
+ * @param None
+ * @retval None
+ */
+static void delay(void) {
+ __IO uint32_t i = 0;
+ for (i = 0xFF; i != 0; i--) {
+ }
+}
+
+/**
+ * @brief Returns the FLASH Status.
+ * @param None
+ * @retval FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
+ * FLASH_ERROR_WRP or FLASH_COMPLETE
+ */
+FLASH_Status FLASH_GetStatus(void) {
+ if ((FLASH->SR & FLASH_SR_BSY) == FLASH_SR_BSY) return FLASH_BUSY;
+
+ if ((FLASH->SR & FLASH_SR_PGERR) != 0) return FLASH_ERROR_PG;
+
+ if ((FLASH->SR & FLASH_SR_WRPERR) != 0) return FLASH_ERROR_WRP;
+
+#if defined(FLASH_OBR_OPTERR)
+ if ((FLASH->SR & FLASH_OBR_OPTERR) != 0) return FLASH_ERROR_OPT;
+#endif
+
+ return FLASH_COMPLETE;
+}
+
+/**
+ * @brief Waits for a Flash operation to complete or a TIMEOUT to occur.
+ * @param Timeout: FLASH progamming Timeout
+ * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
+ * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
+ */
+FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout) {
+ FLASH_Status status;
+
+ /* Check for the Flash Status */
+ status = FLASH_GetStatus();
+ /* Wait for a Flash operation to complete or a TIMEOUT to occur */
+ while ((status == FLASH_BUSY) && (Timeout != 0x00)) {
+ delay();
+ status = FLASH_GetStatus();
+ Timeout--;
+ }
+ if (Timeout == 0) status = FLASH_TIMEOUT;
+ /* Return the operation status */
+ return status;
+}
+
+/**
+ * @brief Erases a specified FLASH page.
+ * @param Page_Address: The page address to be erased.
+ * @retval FLASH Status: The returned value can be: FLASH_BUSY, FLASH_ERROR_PG,
+ * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
+ */
+FLASH_Status FLASH_ErasePage(uint32_t Page_Address) {
+ FLASH_Status status = FLASH_COMPLETE;
+ /* Check the parameters */
+ ASSERT(IS_FLASH_ADDRESS(Page_Address));
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(EraseTimeout);
+
+ if (status == FLASH_COMPLETE) {
+ /* if the previous operation is completed, proceed to erase the page */
+#if defined(FLASH_CR_SNB)
+ FLASH->CR &= ~FLASH_CR_SNB;
+ FLASH->CR |= FLASH_CR_SER | (ADDR2PAGE(Page_Address) << FLASH_CR_SNB_Pos);
+#else
+ FLASH->CR |= FLASH_CR_PER;
+ FLASH->AR = Page_Address;
+#endif
+ FLASH->CR |= FLASH_CR_STRT;
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(EraseTimeout);
+ if (status != FLASH_TIMEOUT) {
+ /* if the erase operation is completed, disable the configured Bits */
+#if defined(FLASH_CR_SNB)
+ FLASH->CR &= ~(FLASH_CR_SER | FLASH_CR_SNB);
+#else
+ FLASH->CR &= ~FLASH_CR_PER;
+#endif
+ }
+ FLASH->SR = (FLASH_SR_EOP | FLASH_SR_PGERR | FLASH_SR_WRPERR);
+ }
+ /* Return the Erase Status */
+ return status;
+}
+
+/**
+ * @brief Programs a half word at a specified address.
+ * @param Address: specifies the address to be programmed.
+ * @param Data: specifies the data to be programmed.
+ * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
+ * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
+ */
+FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data) {
+ FLASH_Status status = FLASH_BAD_ADDRESS;
+
+ if (IS_FLASH_ADDRESS(Address)) {
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(ProgramTimeout);
+ if (status == FLASH_COMPLETE) {
+ /* if the previous operation is completed, proceed to program the new data */
+
+#if defined(FLASH_CR_PSIZE)
+ FLASH->CR &= ~FLASH_CR_PSIZE;
+ FLASH->CR |= FLASH_CR_PSIZE_0;
+#endif
+ FLASH->CR |= FLASH_CR_PG;
+ *(__IO uint16_t*)Address = Data;
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(ProgramTimeout);
+ if (status != FLASH_TIMEOUT) {
+ /* if the program operation is completed, disable the PG Bit */
+ FLASH->CR &= ~FLASH_CR_PG;
+ }
+ FLASH->SR = (FLASH_SR_EOP | FLASH_SR_PGERR | FLASH_SR_WRPERR);
+ }
+ }
+ return status;
+}
+
+/**
+ * @brief Unlocks the FLASH Program Erase Controller.
+ * @param None
+ * @retval None
+ */
+void FLASH_Unlock(void) {
+ if (FLASH->CR & FLASH_CR_LOCK) {
+ /* Authorize the FPEC Access */
+ FLASH->KEYR = FLASH_KEY1;
+ FLASH->KEYR = FLASH_KEY2;
+ }
+}
+
+/**
+ * @brief Locks the FLASH Program Erase Controller.
+ * @param None
+ * @retval None
+ */
+void FLASH_Lock(void) {
+ /* Set the Lock Bit to lock the FPEC and the FCR */
+ FLASH->CR |= FLASH_CR_LOCK;
+}
diff --git a/platforms/chibios/flash_stm32.h b/platforms/chibios/flash_stm32.h
new file mode 100644
index 0000000000..6c66642ec5
--- /dev/null
+++ b/platforms/chibios/flash_stm32.h
@@ -0,0 +1,44 @@
+/*
+ * This software is experimental and a work in progress.
+ * Under no circumstances should these files be used in relation to any critical system(s).
+ * Use of these files is at your own risk.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
+ * PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ *
+ * This files are free to use from https://github.com/rogerclarkmelbourne/Arduino_STM32 and
+ * https://github.com/leaflabs/libmaple
+ *
+ * Modifications for QMK and STM32F303 by Yiancar
+ */
+
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+#ifdef FLASH_STM32_MOCKED
+extern uint8_t FlashBuf[MOCK_FLASH_SIZE];
+#endif
+
+typedef enum { FLASH_BUSY = 1, FLASH_ERROR_PG, FLASH_ERROR_WRP, FLASH_ERROR_OPT, FLASH_COMPLETE, FLASH_TIMEOUT, FLASH_BAD_ADDRESS } FLASH_Status;
+
+#define IS_FLASH_ADDRESS(ADDRESS) (((ADDRESS) >= 0x08000000) && ((ADDRESS) < 0x0807FFFF))
+
+FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout);
+FLASH_Status FLASH_ErasePage(uint32_t Page_Address);
+FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data);
+
+void FLASH_Unlock(void);
+void FLASH_Lock(void);
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/platforms/chibios/gd32v_compatibility.h b/platforms/chibios/gd32v_compatibility.h
new file mode 100644
index 0000000000..f4dcfd8c55
--- /dev/null
+++ b/platforms/chibios/gd32v_compatibility.h
@@ -0,0 +1,120 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+/* GD32VF103 has the same API as STM32F103, but uses different names for literally the same thing.
+ * As of 23.7.2021 QMK is tailored to use STM32 defines/names, for compatibility sake
+ * we just redefine the GD32 names. */
+
+/* Close your eyes kids. */
+#define MCU_STM32
+
+/* AFIO redefines */
+#define MAPR PCF0
+#define AFIO_MAPR_USART1_REMAP AFIO_PCF0_USART0_REMAP
+#define AFIO_MAPR_USART2_REMAP AFIO_PCF0_USART1_REMAP
+#define AFIO_MAPR_USART3_REMAP_PARTIALREMAP AFIO_PCF0_USART2_REMAP_PARTIALREMAP
+#define AFIO_MAPR_USART3_REMAP_FULLREMAP AFIO_PCF0_USART2_REMAP_FULLREMAP
+
+/* DMA redefines. */
+#define STM32_DMA_STREAM(stream) GD32_DMA_STREAM(stream)
+#define STM32_DMA_STREAM_ID(peripheral, channel) GD32_DMA_STREAM_ID(peripheral - 1, channel - 1)
+#define STM32_DMA_CR_DIR_M2P GD32_DMA_CTL_DIR_M2P
+#define STM32_DMA_CR_PSIZE_WORD GD32_DMA_CTL_PWIDTH_WORD
+#define STM32_DMA_CR_MSIZE_WORD GD32_DMA_CTL_MWIDTH_WORD
+#define STM32_DMA_CR_MINC GD32_DMA_CTL_MNAGA
+#define STM32_DMA_CR_CIRC GD32_DMA_CTL_CMEN
+#define STM32_DMA_CR_PL GD32_DMA_CTL_PRIO
+#define STM32_DMA_CR_CHSEL GD32_DMA_CTL_CHSEL
+#define cr1 ctl0
+#define cr2 ctl1
+#define cr3 ctl2
+#define dier dmainten
+
+/* ADC redefines */
+#if HAL_USE_ADC
+# define STM32_ADC_USE_ADC1 GD32_ADC_USE_ADC0
+
+# define smpr1 sampt0
+# define smpr2 sampt1
+# define sqr1 rsq0
+# define sqr2 rsq1
+# define sqr3 rsq2
+
+# define ADC_SMPR2_SMP_AN0 ADC_SAMPT1_SMP_SPT0
+# define ADC_SMPR2_SMP_AN1 ADC_SAMPT1_SMP_SPT1
+# define ADC_SMPR2_SMP_AN2 ADC_SAMPT1_SMP_SPT2
+# define ADC_SMPR2_SMP_AN3 ADC_SAMPT1_SMP_SPT3
+# define ADC_SMPR2_SMP_AN4 ADC_SAMPT1_SMP_SPT4
+# define ADC_SMPR2_SMP_AN5 ADC_SAMPT1_SMP_SPT5
+# define ADC_SMPR2_SMP_AN6 ADC_SAMPT1_SMP_SPT6
+# define ADC_SMPR2_SMP_AN7 ADC_SAMPT1_SMP_SPT7
+# define ADC_SMPR2_SMP_AN8 ADC_SAMPT1_SMP_SPT8
+# define ADC_SMPR2_SMP_AN9 ADC_SAMPT1_SMP_SPT9
+
+# define ADC_SMPR1_SMP_AN10 ADC_SAMPT0_SMP_SPT10
+# define ADC_SMPR1_SMP_AN11 ADC_SAMPT0_SMP_SPT11
+# define ADC_SMPR1_SMP_AN12 ADC_SAMPT0_SMP_SPT12
+# define ADC_SMPR1_SMP_AN13 ADC_SAMPT0_SMP_SPT13
+# define ADC_SMPR1_SMP_AN14 ADC_SAMPT0_SMP_SPT14
+# define ADC_SMPR1_SMP_AN15 ADC_SAMPT0_SMP_SPT15
+
+# define ADC_SQR3_SQ1_N ADC_RSQ2_RSQ1_N
+#endif
+
+/* FLASH redefines */
+#if defined(EEPROM_ENABLE)
+# define SR STAT
+# define FLASH_SR_BSY FLASH_STAT_BUSY
+# define FLASH_SR_PGERR FLASH_STAT_PGERR
+# define FLASH_SR_EOP FLASH_STAT_ENDF
+# define FLASH_SR_WRPRTERR FLASH_STAT_WPERR
+# define FLASH_SR_WRPERR FLASH_SR_WRPRTERR
+# define FLASH_OBR_OPTERR FLASH_OBSTAT_OBERR
+# define AR ADDR
+# define CR CTL
+# define FLASH_CR_PER FLASH_CTL_PER
+# define FLASH_CR_STRT FLASH_CTL_START
+# define FLASH_CR_LOCK FLASH_CTL_LK
+# define FLASH_CR_PG FLASH_CTL_PG
+# define KEYR KEY
+#endif
+
+/* Serial USART redefines. */
+#if HAL_USE_SERIAL
+# if !defined(SERIAL_USART_CR1)
+# define SERIAL_USART_CR1 (USART_CTL0_PCEN | USART_CTL0_PM | USART_CTL0_WL) // parity enable, odd parity, 9 bit length
+# endif
+# if !defined(SERIAL_USART_CR2)
+# define SERIAL_USART_CR2 (USART_CTL1_STB_1) // 2 stop bits
+# endif
+# if !defined(SERIAL_USART_CR3)
+# define SERIAL_USART_CR3 0x0
+# endif
+# define USART_CR3_HDSEL USART_CTL2_HDEN
+# define CCR CHCV
+#endif
+
+/* SPI redefines. */
+#if HAL_USE_SPI
+# define SPI_CR1_LSBFIRST SPI_CTL0_LF
+# define SPI_CR1_CPHA SPI_CTL0_CKPH
+# define SPI_CR1_CPOL SPI_CTL0_CKPL
+# define SPI_CR1_BR_0 SPI_CTL0_PSC_0
+# define SPI_CR1_BR_1 SPI_CTL0_PSC_1
+# define SPI_CR1_BR_2 SPI_CTL0_PSC_2
+#endif
diff --git a/platforms/chibios/gpio.h b/platforms/chibios/gpio.h
new file mode 100644
index 0000000000..4d057f1cab
--- /dev/null
+++ b/platforms/chibios/gpio.h
@@ -0,0 +1,50 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <hal.h>
+#include "pin_defs.h"
+
+typedef ioline_t pin_t;
+
+/* Operation of GPIO by pin. */
+
+#define setPinInput(pin) palSetLineMode(pin, PAL_MODE_INPUT)
+#define setPinInputHigh(pin) palSetLineMode(pin, PAL_MODE_INPUT_PULLUP)
+#define setPinInputLow(pin) palSetLineMode(pin, PAL_MODE_INPUT_PULLDOWN)
+#define setPinOutput(pin) palSetLineMode(pin, PAL_MODE_OUTPUT_PUSHPULL)
+
+#define writePinHigh(pin) palSetLine(pin)
+#define writePinLow(pin) palClearLine(pin)
+#define writePin(pin, level) ((level) ? (writePinHigh(pin)) : (writePinLow(pin)))
+
+#define readPin(pin) palReadLine(pin)
+
+#define togglePin(pin) palToggleLine(pin)
+
+/* Operation of GPIO by port. */
+
+typedef uint16_t port_data_t;
+
+#define readPort(pin) palReadPort(PAL_PORT(pin))
+
+#define setPortBitInput(pin, bit) palSetPadMode(PAL_PORT(pin), bit, PAL_MODE_INPUT)
+#define setPortBitInputHigh(pin, bit) palSetPadMode(PAL_PORT(pin), bit, PAL_MODE_INPUT_PULLUP)
+#define setPortBitInputLow(pin, bit) palSetPadMode(PAL_PORT(pin), bit, PAL_MODE_INPUT_PULLDOWN)
+#define setPortBitOutput(pin, bit) palSetPadMode(PAL_PORT(pin), bit, PAL_MODE_OUTPUT_PUSHPULL)
+
+#define writePortBitLow(pin, bit) palClearLine(PAL_LINE(PAL_PORT(pin), bit))
+#define writePortBitHigh(pin, bit) palSetLine(PAL_LINE(PAL_PORT(pin), bit))
diff --git a/platforms/chibios/pin_defs.h b/platforms/chibios/pin_defs.h
new file mode 100644
index 0000000000..c03f8de0c2
--- /dev/null
+++ b/platforms/chibios/pin_defs.h
@@ -0,0 +1,323 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+// Defines mapping for Proton C replacement
+#ifdef CONVERT_TO_PROTON_C
+// Left side (front)
+# define D3 PAL_LINE(GPIOA, 9)
+# define D2 PAL_LINE(GPIOA, 10)
+// GND
+// GND
+# define D1 PAL_LINE(GPIOB, 7)
+# define D0 PAL_LINE(GPIOB, 6)
+# define D4 PAL_LINE(GPIOB, 5)
+# define C6 PAL_LINE(GPIOB, 4)
+# define D7 PAL_LINE(GPIOB, 3)
+# define E6 PAL_LINE(GPIOB, 2)
+# define B4 PAL_LINE(GPIOB, 1)
+# define B5 PAL_LINE(GPIOB, 0)
+
+// Right side (front)
+// RAW
+// GND
+// RESET
+// VCC
+# define F4 PAL_LINE(GPIOA, 2)
+# define F5 PAL_LINE(GPIOA, 1)
+# define F6 PAL_LINE(GPIOA, 0)
+# define F7 PAL_LINE(GPIOB, 8)
+# define B1 PAL_LINE(GPIOB, 13)
+# define B3 PAL_LINE(GPIOB, 14)
+# define B2 PAL_LINE(GPIOB, 15)
+# define B6 PAL_LINE(GPIOB, 9)
+
+// LEDs (only D5/C13 uses an actual LED)
+# ifdef CONVERT_TO_PROTON_C_RXLED
+# define D5 PAL_LINE(GPIOC, 14)
+# define B0 PAL_LINE(GPIOC, 13)
+# else
+# define D5 PAL_LINE(GPIOC, 13)
+# define B0 PAL_LINE(GPIOC, 14)
+# endif
+#else
+# define A0 PAL_LINE(GPIOA, 0)
+# define A1 PAL_LINE(GPIOA, 1)
+# define A2 PAL_LINE(GPIOA, 2)
+# define A3 PAL_LINE(GPIOA, 3)
+# define A4 PAL_LINE(GPIOA, 4)
+# define A5 PAL_LINE(GPIOA, 5)
+# define A6 PAL_LINE(GPIOA, 6)
+# define A7 PAL_LINE(GPIOA, 7)
+# define A8 PAL_LINE(GPIOA, 8)
+# define A9 PAL_LINE(GPIOA, 9)
+# define A10 PAL_LINE(GPIOA, 10)
+# define A11 PAL_LINE(GPIOA, 11)
+# define A12 PAL_LINE(GPIOA, 12)
+# define A13 PAL_LINE(GPIOA, 13)
+# define A14 PAL_LINE(GPIOA, 14)
+# define A15 PAL_LINE(GPIOA, 15)
+# define A16 PAL_LINE(GPIOA, 16)
+# define A17 PAL_LINE(GPIOA, 17)
+# define A18 PAL_LINE(GPIOA, 18)
+# define A19 PAL_LINE(GPIOA, 19)
+# define A20 PAL_LINE(GPIOA, 20)
+# define A21 PAL_LINE(GPIOA, 21)
+# define A22 PAL_LINE(GPIOA, 22)
+# define A23 PAL_LINE(GPIOA, 23)
+# define A24 PAL_LINE(GPIOA, 24)
+# define A25 PAL_LINE(GPIOA, 25)
+# define A26 PAL_LINE(GPIOA, 26)
+# define A27 PAL_LINE(GPIOA, 27)
+# define A28 PAL_LINE(GPIOA, 28)
+# define A29 PAL_LINE(GPIOA, 29)
+# define A30 PAL_LINE(GPIOA, 30)
+# define A31 PAL_LINE(GPIOA, 31)
+# define A32 PAL_LINE(GPIOA, 32)
+# define B0 PAL_LINE(GPIOB, 0)
+# define B1 PAL_LINE(GPIOB, 1)
+# define B2 PAL_LINE(GPIOB, 2)
+# define B3 PAL_LINE(GPIOB, 3)
+# define B4 PAL_LINE(GPIOB, 4)
+# define B5 PAL_LINE(GPIOB, 5)
+# define B6 PAL_LINE(GPIOB, 6)
+# define B7 PAL_LINE(GPIOB, 7)
+# define B8 PAL_LINE(GPIOB, 8)
+# define B9 PAL_LINE(GPIOB, 9)
+# define B10 PAL_LINE(GPIOB, 10)
+# define B11 PAL_LINE(GPIOB, 11)
+# define B12 PAL_LINE(GPIOB, 12)
+# define B13 PAL_LINE(GPIOB, 13)
+# define B14 PAL_LINE(GPIOB, 14)
+# define B15 PAL_LINE(GPIOB, 15)
+# define B16 PAL_LINE(GPIOB, 16)
+# define B17 PAL_LINE(GPIOB, 17)
+# define B18 PAL_LINE(GPIOB, 18)
+# define B19 PAL_LINE(GPIOB, 19)
+# define B20 PAL_LINE(GPIOB, 20)
+# define B21 PAL_LINE(GPIOB, 21)
+# define B22 PAL_LINE(GPIOB, 22)
+# define B23 PAL_LINE(GPIOB, 23)
+# define B24 PAL_LINE(GPIOB, 24)
+# define B25 PAL_LINE(GPIOB, 25)
+# define B26 PAL_LINE(GPIOB, 26)
+# define B27 PAL_LINE(GPIOB, 27)
+# define B28 PAL_LINE(GPIOB, 28)
+# define B29 PAL_LINE(GPIOB, 29)
+# define B30 PAL_LINE(GPIOB, 30)
+# define B31 PAL_LINE(GPIOB, 31)
+# define B32 PAL_LINE(GPIOB, 32)
+# define C0 PAL_LINE(GPIOC, 0)
+# define C1 PAL_LINE(GPIOC, 1)
+# define C2 PAL_LINE(GPIOC, 2)
+# define C3 PAL_LINE(GPIOC, 3)
+# define C4 PAL_LINE(GPIOC, 4)
+# define C5 PAL_LINE(GPIOC, 5)
+# define C6 PAL_LINE(GPIOC, 6)
+# define C7 PAL_LINE(GPIOC, 7)
+# define C8 PAL_LINE(GPIOC, 8)
+# define C9 PAL_LINE(GPIOC, 9)
+# define C10 PAL_LINE(GPIOC, 10)
+# define C11 PAL_LINE(GPIOC, 11)
+# define C12 PAL_LINE(GPIOC, 12)
+# define C13 PAL_LINE(GPIOC, 13)
+# define C14 PAL_LINE(GPIOC, 14)
+# define C15 PAL_LINE(GPIOC, 15)
+# define C16 PAL_LINE(GPIOC, 16)
+# define C17 PAL_LINE(GPIOC, 17)
+# define C18 PAL_LINE(GPIOC, 18)
+# define C19 PAL_LINE(GPIOC, 19)
+# define C20 PAL_LINE(GPIOC, 20)
+# define C21 PAL_LINE(GPIOC, 21)
+# define C22 PAL_LINE(GPIOC, 22)
+# define C23 PAL_LINE(GPIOC, 23)
+# define C24 PAL_LINE(GPIOC, 24)
+# define C25 PAL_LINE(GPIOC, 25)
+# define C26 PAL_LINE(GPIOC, 26)
+# define C27 PAL_LINE(GPIOC, 27)
+# define C28 PAL_LINE(GPIOC, 28)
+# define C29 PAL_LINE(GPIOC, 29)
+# define C30 PAL_LINE(GPIOC, 30)
+# define C31 PAL_LINE(GPIOC, 31)
+# define C32 PAL_LINE(GPIOC, 32)
+# define D0 PAL_LINE(GPIOD, 0)
+# define D1 PAL_LINE(GPIOD, 1)
+# define D2 PAL_LINE(GPIOD, 2)
+# define D3 PAL_LINE(GPIOD, 3)
+# define D4 PAL_LINE(GPIOD, 4)
+# define D5 PAL_LINE(GPIOD, 5)
+# define D6 PAL_LINE(GPIOD, 6)
+# define D7 PAL_LINE(GPIOD, 7)
+# define D8 PAL_LINE(GPIOD, 8)
+# define D9 PAL_LINE(GPIOD, 9)
+# define D10 PAL_LINE(GPIOD, 10)
+# define D11 PAL_LINE(GPIOD, 11)
+# define D12 PAL_LINE(GPIOD, 12)
+# define D13 PAL_LINE(GPIOD, 13)
+# define D14 PAL_LINE(GPIOD, 14)
+# define D15 PAL_LINE(GPIOD, 15)
+# define D16 PAL_LINE(GPIOD, 16)
+# define D17 PAL_LINE(GPIOD, 17)
+# define D18 PAL_LINE(GPIOD, 18)
+# define D19 PAL_LINE(GPIOD, 19)
+# define D20 PAL_LINE(GPIOD, 20)
+# define D21 PAL_LINE(GPIOD, 21)
+# define D22 PAL_LINE(GPIOD, 22)
+# define D23 PAL_LINE(GPIOD, 23)
+# define D24 PAL_LINE(GPIOD, 24)
+# define D25 PAL_LINE(GPIOD, 25)
+# define D26 PAL_LINE(GPIOD, 26)
+# define D27 PAL_LINE(GPIOD, 27)
+# define D28 PAL_LINE(GPIOD, 28)
+# define D29 PAL_LINE(GPIOD, 29)
+# define D30 PAL_LINE(GPIOD, 30)
+# define D31 PAL_LINE(GPIOD, 31)
+# define D32 PAL_LINE(GPIOD, 32)
+# define E0 PAL_LINE(GPIOE, 0)
+# define E1 PAL_LINE(GPIOE, 1)
+# define E2 PAL_LINE(GPIOE, 2)
+# define E3 PAL_LINE(GPIOE, 3)
+# define E4 PAL_LINE(GPIOE, 4)
+# define E5 PAL_LINE(GPIOE, 5)
+# define E6 PAL_LINE(GPIOE, 6)
+# define E7 PAL_LINE(GPIOE, 7)
+# define E8 PAL_LINE(GPIOE, 8)
+# define E9 PAL_LINE(GPIOE, 9)
+# define E10 PAL_LINE(GPIOE, 10)
+# define E11 PAL_LINE(GPIOE, 11)
+# define E12 PAL_LINE(GPIOE, 12)
+# define E13 PAL_LINE(GPIOE, 13)
+# define E14 PAL_LINE(GPIOE, 14)
+# define E15 PAL_LINE(GPIOE, 15)
+# define E16 PAL_LINE(GPIOE, 16)
+# define E17 PAL_LINE(GPIOE, 17)
+# define E18 PAL_LINE(GPIOE, 18)
+# define E19 PAL_LINE(GPIOE, 19)
+# define E20 PAL_LINE(GPIOE, 20)
+# define E21 PAL_LINE(GPIOE, 21)
+# define E22 PAL_LINE(GPIOE, 22)
+# define E23 PAL_LINE(GPIOE, 23)
+# define E24 PAL_LINE(GPIOE, 24)
+# define E25 PAL_LINE(GPIOE, 25)
+# define E26 PAL_LINE(GPIOE, 26)
+# define E27 PAL_LINE(GPIOE, 27)
+# define E28 PAL_LINE(GPIOE, 28)
+# define E29 PAL_LINE(GPIOE, 29)
+# define E30 PAL_LINE(GPIOE, 30)
+# define E31 PAL_LINE(GPIOE, 31)
+# define E32 PAL_LINE(GPIOE, 32)
+# define F0 PAL_LINE(GPIOF, 0)
+# define F1 PAL_LINE(GPIOF, 1)
+# define F2 PAL_LINE(GPIOF, 2)
+# define F3 PAL_LINE(GPIOF, 3)
+# define F4 PAL_LINE(GPIOF, 4)
+# define F5 PAL_LINE(GPIOF, 5)
+# define F6 PAL_LINE(GPIOF, 6)
+# define F7 PAL_LINE(GPIOF, 7)
+# define F8 PAL_LINE(GPIOF, 8)
+# define F9 PAL_LINE(GPIOF, 9)
+# define F10 PAL_LINE(GPIOF, 10)
+# define F11 PAL_LINE(GPIOF, 11)
+# define F12 PAL_LINE(GPIOF, 12)
+# define F13 PAL_LINE(GPIOF, 13)
+# define F14 PAL_LINE(GPIOF, 14)
+# define F15 PAL_LINE(GPIOF, 15)
+# define G0 PAL_LINE(GPIOG, 0)
+# define G1 PAL_LINE(GPIOG, 1)
+# define G2 PAL_LINE(GPIOG, 2)
+# define G3 PAL_LINE(GPIOG, 3)
+# define G4 PAL_LINE(GPIOG, 4)
+# define G5 PAL_LINE(GPIOG, 5)
+# define G6 PAL_LINE(GPIOG, 6)
+# define G7 PAL_LINE(GPIOG, 7)
+# define G8 PAL_LINE(GPIOG, 8)
+# define G9 PAL_LINE(GPIOG, 9)
+# define G10 PAL_LINE(GPIOG, 10)
+# define G11 PAL_LINE(GPIOG, 11)
+# define G12 PAL_LINE(GPIOG, 12)
+# define G13 PAL_LINE(GPIOG, 13)
+# define G14 PAL_LINE(GPIOG, 14)
+# define G15 PAL_LINE(GPIOG, 15)
+# define H0 PAL_LINE(GPIOH, 0)
+# define H1 PAL_LINE(GPIOH, 1)
+# define H2 PAL_LINE(GPIOH, 2)
+# define H3 PAL_LINE(GPIOH, 3)
+# define H4 PAL_LINE(GPIOH, 4)
+# define H5 PAL_LINE(GPIOH, 5)
+# define H6 PAL_LINE(GPIOH, 6)
+# define H7 PAL_LINE(GPIOH, 7)
+# define H8 PAL_LINE(GPIOH, 8)
+# define H9 PAL_LINE(GPIOH, 9)
+# define H10 PAL_LINE(GPIOH, 10)
+# define H11 PAL_LINE(GPIOH, 11)
+# define H12 PAL_LINE(GPIOH, 12)
+# define H13 PAL_LINE(GPIOH, 13)
+# define H14 PAL_LINE(GPIOH, 14)
+# define H15 PAL_LINE(GPIOH, 15)
+# define I0 PAL_LINE(GPIOI, 0)
+# define I1 PAL_LINE(GPIOI, 1)
+# define I2 PAL_LINE(GPIOI, 2)
+# define I3 PAL_LINE(GPIOI, 3)
+# define I4 PAL_LINE(GPIOI, 4)
+# define I5 PAL_LINE(GPIOI, 5)
+# define I6 PAL_LINE(GPIOI, 6)
+# define I7 PAL_LINE(GPIOI, 7)
+# define I8 PAL_LINE(GPIOI, 8)
+# define I9 PAL_LINE(GPIOI, 9)
+# define I10 PAL_LINE(GPIOI, 10)
+# define I11 PAL_LINE(GPIOI, 11)
+# define I12 PAL_LINE(GPIOI, 12)
+# define I13 PAL_LINE(GPIOI, 13)
+# define I14 PAL_LINE(GPIOI, 14)
+# define I15 PAL_LINE(GPIOI, 15)
+# define J0 PAL_LINE(GPIOJ, 0)
+# define J1 PAL_LINE(GPIOJ, 1)
+# define J2 PAL_LINE(GPIOJ, 2)
+# define J3 PAL_LINE(GPIOJ, 3)
+# define J4 PAL_LINE(GPIOJ, 4)
+# define J5 PAL_LINE(GPIOJ, 5)
+# define J6 PAL_LINE(GPIOJ, 6)
+# define J7 PAL_LINE(GPIOJ, 7)
+# define J8 PAL_LINE(GPIOJ, 8)
+# define J9 PAL_LINE(GPIOJ, 9)
+# define J10 PAL_LINE(GPIOJ, 10)
+# define J11 PAL_LINE(GPIOJ, 11)
+# define J12 PAL_LINE(GPIOJ, 12)
+# define J13 PAL_LINE(GPIOJ, 13)
+# define J14 PAL_LINE(GPIOJ, 14)
+# define J15 PAL_LINE(GPIOJ, 15)
+// Keyboards can `#define KEYBOARD_REQUIRES_GPIOK` if they need to access GPIO-K pins. These conflict with a whole
+// bunch of layout definitions, so it's intentionally left out unless absolutely required -- in that case, the
+// keyboard designer should use a different symbol when defining their layout macros.
+# ifdef KEYBOARD_REQUIRES_GPIOK
+# define K0 PAL_LINE(GPIOK, 0)
+# define K1 PAL_LINE(GPIOK, 1)
+# define K2 PAL_LINE(GPIOK, 2)
+# define K3 PAL_LINE(GPIOK, 3)
+# define K4 PAL_LINE(GPIOK, 4)
+# define K5 PAL_LINE(GPIOK, 5)
+# define K6 PAL_LINE(GPIOK, 6)
+# define K7 PAL_LINE(GPIOK, 7)
+# define K8 PAL_LINE(GPIOK, 8)
+# define K9 PAL_LINE(GPIOK, 9)
+# define K10 PAL_LINE(GPIOK, 10)
+# define K11 PAL_LINE(GPIOK, 11)
+# define K12 PAL_LINE(GPIOK, 12)
+# define K13 PAL_LINE(GPIOK, 13)
+# define K14 PAL_LINE(GPIOK, 14)
+# define K15 PAL_LINE(GPIOK, 15)
+# endif
+#endif
diff --git a/platforms/chibios/platform.c b/platforms/chibios/platform.c
new file mode 100644
index 0000000000..d4a229f278
--- /dev/null
+++ b/platforms/chibios/platform.c
@@ -0,0 +1,22 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "platform_deps.h"
+
+void platform_setup(void) {
+ halInit();
+ chSysInit();
+} \ No newline at end of file
diff --git a/platforms/chibios/platform.mk b/platforms/chibios/platform.mk
new file mode 100644
index 0000000000..1c8d430074
--- /dev/null
+++ b/platforms/chibios/platform.mk
@@ -0,0 +1,439 @@
+# Hey Emacs, this is a -*- makefile -*-
+##############################################################################
+# Architecture or project specific options
+#
+
+# Stack size to be allocated to the Cortex-M process stack. This stack is
+# the stack used by the main() thread.
+ifeq ($(USE_PROCESS_STACKSIZE),)
+ USE_PROCESS_STACKSIZE = 0x800
+endif
+
+# Stack size to the allocated to the Cortex-M main/exceptions stack. This
+# stack is used for processing interrupts and exceptions.
+ifeq ($(USE_EXCEPTIONS_STACKSIZE),)
+ USE_EXCEPTIONS_STACKSIZE = 0x400
+endif
+
+#
+# Architecture or project specific options
+##############################################################################
+
+##############################################################################
+# Project, sources and paths
+#
+
+# Imported source files and paths
+OPT_OS = chibios
+CHIBIOS = $(TOP_DIR)/lib/chibios
+CHIBIOS_CONTRIB = $(TOP_DIR)/lib/chibios-contrib
+
+#
+# Startup, Port and Platform support selection
+##############################################################################
+
+ifeq ($(strip $(MCU)), risc-v)
+ # RISC-V Support
+ # As of 7.4.2021 there is only one supported RISC-V platform in Chibios-Contrib,
+ # therefore all required settings are hard-coded
+ STARTUP_MK = $(CHIBIOS_CONTRIB)/os/common/startup/RISCV-ECLIC/compilers/GCC/mk/startup_$(MCU_STARTUP).mk
+ PORT_V = $(CHIBIOS_CONTRIB)/os/common/ports/RISCV-ECLIC/compilers/GCC/mk/port.mk
+ RULESPATH = $(CHIBIOS_CONTRIB)/os/common/startup/RISCV-ECLIC/compilers/GCC
+ PLATFORM_MK = $(CHIBIOS_CONTRIB)/os/hal/ports/GD/GD32VF103/platform.mk
+else
+ # ARM Support
+ CHIBIOS_PORT ?=
+ ifeq ("$(CHIBIOS_PORT)","")
+ CHIBIOS_PORT = ARMv$(ARMV)-M
+ endif
+
+ # Startup files. Try a few different locations, for compability with old versions and
+ # for things hardware in the contrib repository
+ STARTUP_MK = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/startup_$(MCU_STARTUP).mk
+ ifeq ("$(wildcard $(STARTUP_MK))","")
+ STARTUP_MK = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC/mk/startup_$(MCU_STARTUP).mk
+ ifeq ("$(wildcard $(STARTUP_MK))","")
+ STARTUP_MK = $(CHIBIOS_CONTRIB)/os/common/startup/ARMCMx/compilers/GCC/mk/startup_$(MCU_STARTUP).mk
+ endif
+ endif
+
+ # Port files. Try a few different locations, for compability with old versions and
+ # for things hardware in the contrib repository
+ PORT_V = $(CHIBIOS)/os/common/ports/$(CHIBIOS_PORT)/compilers/GCC/mk/port.mk
+ ifeq ("$(wildcard $(PORT_V))","")
+ PORT_V = $(CHIBIOS)/os/rt/ports/ARMCMx/compilers/GCC/mk/port_v$(ARMV)m.mk
+ ifeq ("$(wildcard $(PORT_V))","")
+ PORT_V = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC/mk/port_v$(ARMV)m.mk
+ endif
+ endif
+
+ # Rules location. Try a few different locations, for compability with old versions and
+ # for things hardware in the contrib repository
+ RULESPATH = $(CHIBIOS)/os/common/ports/$(CHIBIOS_PORT)/compilers/GCC
+ ifeq ("$(wildcard $(RULESPATH)/rules.mk)","")
+ RULESPATH = $(CHIBIOS)/os/common/ports/ARMCMx/compilers/GCC
+ ifeq ("$(wildcard $(RULESPATH)/rules.mk)","")
+ RULESPATH = $(CHIBIOS)/os/common/startup/ARMCMx/compilers/GCC
+ endif
+ endif
+endif
+
+ifeq ("$(PLATFORM_NAME)","")
+ PLATFORM_NAME = platform
+endif
+
+ifeq ("$(wildcard $(PLATFORM_MK))","")
+ PLATFORM_MK = $(CHIBIOS)/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)/$(PLATFORM_NAME).mk
+ ifeq ("$(wildcard $(PLATFORM_MK))","")
+ PLATFORM_MK = $(CHIBIOS_CONTRIB)/os/hal/ports/$(MCU_FAMILY)/$(MCU_SERIES)/$(PLATFORM_NAME).mk
+ endif
+endif
+
+include $(STARTUP_MK)
+include $(PORT_V)
+include $(PLATFORM_MK)
+
+#
+# Board support selection.
+##############################################################################
+
+BOARD_MK :=
+
+ifneq ("$(wildcard $(KEYBOARD_PATH_5)/boards/$(BOARD)/board.mk)","")
+ BOARD_PATH = $(KEYBOARD_PATH_5)
+ BOARD_MK += $(KEYBOARD_PATH_5)/boards/$(BOARD)/board.mk
+else ifneq ("$(wildcard $(KEYBOARD_PATH_4)/boards/$(BOARD)/board.mk)","")
+ BOARD_PATH = $(KEYBOARD_PATH_4)
+ BOARD_MK += $(KEYBOARD_PATH_4)/boards/$(BOARD)/board.mk
+else ifneq ("$(wildcard $(KEYBOARD_PATH_3)/boards/$(BOARD)/board.mk)","")
+ BOARD_PATH = $(KEYBOARD_PATH_3)
+ BOARD_MK += $(KEYBOARD_PATH_3)/boards/$(BOARD)/board.mk
+else ifneq ("$(wildcard $(KEYBOARD_PATH_2)/boards/$(BOARD)/board.mk)","")
+ BOARD_PATH = $(KEYBOARD_PATH_2)
+ BOARD_MK += $(KEYBOARD_PATH_2)/boards/$(BOARD)/board.mk
+else ifneq ("$(wildcard $(KEYBOARD_PATH_1)/boards/$(BOARD)/board.mk)","")
+ BOARD_PATH = $(KEYBOARD_PATH_1)
+ BOARD_MK += $(KEYBOARD_PATH_1)/boards/$(BOARD)/board.mk
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/board/board.mk)","")
+ BOARD_PATH = $(TOP_DIR)/platforms/chibios/boards/$(BOARD)
+ BOARD_MK += $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/board/board.mk
+ KEYBOARD_PATHS += $(BOARD_PATH)/configs
+ ifneq ("$(wildcard $(BOARD_PATH)/rules.mk)","")
+ include $(BOARD_PATH)/rules.mk
+ endif
+endif
+
+ifeq ("$(wildcard $(BOARD_MK))","")
+ BOARD_MK = $(CHIBIOS)/os/hal/boards/$(BOARD)/board.mk
+ ifeq ("$(wildcard $(BOARD_MK))","")
+ BOARD_MK = $(CHIBIOS_CONTRIB)/os/hal/boards/$(BOARD)/board.mk
+ endif
+endif
+
+include $(BOARD_MK)
+
+#
+# Bootloader selection.
+##############################################################################
+
+# Set bootloader address if supplied.
+ifdef STM32_BOOTLOADER_ADDRESS
+ OPT_DEFS += -DSTM32_BOOTLOADER_ADDRESS=$(STM32_BOOTLOADER_ADDRESS)
+endif
+
+# Work out if we need to set up the include for the bootloader definitions
+ifneq ("$(wildcard $(KEYBOARD_PATH_5)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_5)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_5)/boards/$(BOARD)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_5)/boards/$(BOARD)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_4)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_4)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_4)/boards/$(BOARD)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_4)/boards/$(BOARD)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_3)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_3)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_3)/boards/$(BOARD)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_3)/boards/$(BOARD)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_2)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_2)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_2)/boards/$(BOARD)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_2)/boards/$(BOARD)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_1)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_1)/bootloader_defs.h
+else ifneq ("$(wildcard $(KEYBOARD_PATH_1)/boards/$(BOARD)/bootloader_defs.h)","")
+ OPT_DEFS += -include $(KEYBOARD_PATH_1)/boards/$(BOARD)/bootloader_defs.h
+else ifneq ("$(wildcard $(BOARD_PATH)/configs/bootloader_defs.h)","")
+ OPT_DEFS += -include $(BOARD_PATH)/configs/bootloader_defs.h
+endif
+
+#
+# ChibiOS config selection.
+##############################################################################
+
+# Work out the config file directories
+ifneq ("$(wildcard $(KEYBOARD_PATH_5)/chconf.h)","")
+ CHCONFDIR = $(KEYBOARD_PATH_5)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_4)/chconf.h)","")
+ CHCONFDIR = $(KEYBOARD_PATH_4)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_3)/chconf.h)","")
+ CHCONFDIR = $(KEYBOARD_PATH_3)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_2)/chconf.h)","")
+ CHCONFDIR = $(KEYBOARD_PATH_2)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_1)/chconf.h)","")
+ CHCONFDIR = $(KEYBOARD_PATH_1)
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/configs/chconf.h)","")
+ CHCONFDIR = $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/configs
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/boards/chibios/common/configs/chconf.h)","")
+ CHCONFDIR = $(TOP_DIR)/platforms/chibios/boards/common/configs
+endif
+
+#
+# HAL config selection.
+##############################################################################
+
+ifneq ("$(wildcard $(KEYBOARD_PATH_5)/halconf.h)","")
+ HALCONFDIR = $(KEYBOARD_PATH_5)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_4)/halconf.h)","")
+ HALCONFDIR = $(KEYBOARD_PATH_4)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_3)/halconf.h)","")
+ HALCONFDIR = $(KEYBOARD_PATH_3)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_2)/halconf.h)","")
+ HALCONFDIR = $(KEYBOARD_PATH_2)
+else ifneq ("$(wildcard $(KEYBOARD_PATH_1)/halconf.h)","")
+ HALCONFDIR = $(KEYBOARD_PATH_1)
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/configs/halconf.h)","")
+ HALCONFDIR = $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/configs
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/chibios/boards/common/configs/halconf.h)","")
+ HALCONFDIR = $(TOP_DIR)/platforms/chibios/boards/common/configs
+endif
+
+#
+# Linker script selection.
+##############################################################################
+
+ifneq ("$(wildcard $(KEYBOARD_PATH_5)/ld/$(MCU_LDSCRIPT).ld)","")
+ LDSCRIPT = $(KEYBOARD_PATH_5)/ld/$(MCU_LDSCRIPT).ld
+else ifneq ("$(wildcard $(KEYBOARD_PATH_4)/ld/$(MCU_LDSCRIPT).ld)","")
+ LDSCRIPT = $(KEYBOARD_PATH_4)/ld/$(MCU_LDSCRIPT).ld
+else ifneq ("$(wildcard $(KEYBOARD_PATH_3)/ld/$(MCU_LDSCRIPT).ld)","")
+ LDSCRIPT = $(KEYBOARD_PATH_3)/ld/$(MCU_LDSCRIPT).ld
+else ifneq ("$(wildcard $(KEYBOARD_PATH_2)/ld/$(MCU_LDSCRIPT).ld)","")
+ LDSCRIPT = $(KEYBOARD_PATH_2)/ld/$(MCU_LDSCRIPT).ld
+else ifneq ("$(wildcard $(KEYBOARD_PATH_1)/ld/$(MCU_LDSCRIPT).ld)","")
+ LDSCRIPT = $(KEYBOARD_PATH_1)/ld/$(MCU_LDSCRIPT).ld
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/ld/$(MCU_LDSCRIPT).ld)","")
+ LDFLAGS += -L$(TOP_DIR)/platforms/chibios/boards/$(BOARD)/ld
+ LDSCRIPT = $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/ld/$(MCU_LDSCRIPT).ld
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/chibios/boards/common/ld/$(MCU_LDSCRIPT).ld)","")
+ LDSCRIPT = $(TOP_DIR)/platforms/chibios/boards/common/ld/$(MCU_LDSCRIPT).ld
+else ifneq ("$(wildcard $(STARTUPLD_CONTRIB)/$(MCU_LDSCRIPT).ld)","")
+ LDSCRIPT = $(STARTUPLD_CONTRIB)/$(MCU_LDSCRIPT).ld
+ USE_CHIBIOS_CONTRIB = yes
+else
+ LDSCRIPT = $(STARTUPLD)/$(MCU_LDSCRIPT).ld
+endif
+
+#
+# Include ChibiOS makefiles.
+##############################################################################
+
+# HAL-OSAL files (optional).
+include $(CHIBIOS)/os/hal/hal.mk
+-include $(CHIBIOS)/os/hal/osal/rt/osal.mk # ChibiOS <= 19.x
+-include $(CHIBIOS)/os/hal/osal/rt-nil/osal.mk # ChibiOS >= 20.x
+# RTOS files (optional).
+include $(CHIBIOS)/os/rt/rt.mk
+# Other files (optional).
+include $(CHIBIOS)/os/hal/lib/streams/streams.mk
+
+PLATFORM_SRC = \
+ $(STARTUPSRC) \
+ $(KERNSRC) \
+ $(PORTSRC) \
+ $(OSALSRC) \
+ $(HALSRC) \
+ $(PLATFORMSRC) \
+ $(BOARDSRC) \
+ $(STREAMSSRC) \
+ $(CHIBIOS)/os/various/syscalls.c \
+ $(PLATFORM_COMMON_DIR)/syscall-fallbacks.c \
+ $(PLATFORM_COMMON_DIR)/wait.c
+
+# Ensure the ASM files are not subjected to LTO -- it'll strip out interrupt handlers otherwise.
+QUANTUM_LIB_SRC += $(STARTUPASM) $(PORTASM) $(OSALASM) $(PLATFORMASM)
+
+PLATFORM_SRC := $(patsubst $(TOP_DIR)/%,%,$(PLATFORM_SRC))
+
+EXTRAINCDIRS += $(CHIBIOS)/os/license $(CHIBIOS)/os/oslib/include \
+ $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/configs \
+ $(TOP_DIR)/platforms/chibios/boards/common/configs \
+ $(HALCONFDIR) $(CHCONFDIR) \
+ $(STARTUPINC) $(KERNINC) $(PORTINC) $(OSALINC) \
+ $(HALINC) $(PLATFORMINC) $(BOARDINC) $(TESTINC) \
+ $(STREAMSINC) $(CHIBIOS)/os/various $(COMMON_VPATH)
+
+#
+# ChibiOS-Contrib
+##############################################################################
+
+# Work out if we're using ChibiOS-Contrib by checking if halconf_community.h exists
+ifneq ("$(wildcard $(KEYBOARD_PATH_5)/halconf_community.h)","")
+ USE_CHIBIOS_CONTRIB = yes
+else ifneq ("$(wildcard $(KEYBOARD_PATH_4)/halconf_community.h)","")
+ USE_CHIBIOS_CONTRIB = yes
+else ifneq ("$(wildcard $(KEYBOARD_PATH_3)/halconf_community.h)","")
+ USE_CHIBIOS_CONTRIB = yes
+else ifneq ("$(wildcard $(KEYBOARD_PATH_2)/halconf_community.h)","")
+ USE_CHIBIOS_CONTRIB = yes
+else ifneq ("$(wildcard $(KEYBOARD_PATH_1)/halconf_community.h)","")
+ USE_CHIBIOS_CONTRIB = yes
+else ifneq ("$(wildcard $(TOP_DIR)/platforms/chibios/boards/$(BOARD)/configs/halconf_community.h)","")
+ USE_CHIBIOS_CONTRIB = yes
+endif
+
+ifeq ($(strip $(USE_CHIBIOS_CONTRIB)),yes)
+ include $(CHIBIOS_CONTRIB)/os/hal/hal.mk
+ PLATFORM_SRC += $(PLATFORMSRC_CONTRIB) $(HALSRC_CONTRIB)
+ EXTRAINCDIRS += $(PLATFORMINC_CONTRIB) $(HALINC_CONTRIB) $(CHIBIOS_CONTRIB)/os/various
+endif
+
+#
+# Project, sources and paths
+##############################################################################
+
+##############################################################################
+# Injected configs
+#
+ifneq ("$(wildcard $(BOARD_PATH)/configs/config.h)","")
+ CONFIG_H += $(BOARD_PATH)/configs/config.h
+endif
+ifneq ("$(wildcard $(BOARD_PATH)/configs/post_config.h)","")
+ POST_CONFIG_H += $(BOARD_PATH)/configs/post_config.h
+endif
+
+##############################################################################
+# Compiler and Linker configuration
+#
+
+# Use defined stack sizes of the main thread in linker scripts
+SHARED_LDSYMBOLS = -Wl,--defsym=__process_stack_size__=$(USE_PROCESS_STACKSIZE),--defsym=__main_stack_size__=$(USE_EXCEPTIONS_STACKSIZE)
+
+# Shared Compiler flags for all toolchains
+SHARED_CFLAGS = -fomit-frame-pointer \
+ -ffunction-sections \
+ -fdata-sections \
+ -fno-common \
+ -fshort-wchar
+
+# Shared Linker flags for all toolchains
+SHARED_LDFLAGS = -T $(LDSCRIPT) \
+ -Wl,--gc-sections \
+ -nostartfiles
+
+ifeq ($(strip $(MCU)), risc-v)
+ # RISC-V toolchain specific configuration
+ # Find suitable GCC compiler
+ ifeq ($(strip $(TOOLCHAIN)),)
+ ifneq ($(shell which riscv32-unknown-elf-gcc 2>/dev/null),)
+ TOOLCHAIN = riscv32-unknown-elf-
+ else
+ ifneq ($(shell which riscv64-unknown-elf-gcc 2>/dev/null),)
+ TOOLCHAIN = riscv64-unknown-elf-
+ else
+ $(error "No RISC-V toolchain found. Can't find riscv32-unknown-elf-gcc or riscv64-unknown-elf-gcc found in your systems PATH variable. Please install a valid toolchain and make it accessible!")
+ endif
+ endif
+ endif
+
+ # Default to compiling with picolibc for RISC-V targets if available, which
+ # is available by default on distributions based on Debian 11+.
+ ifeq ($(shell $(TOOLCHAIN)gcc --specs=picolibc.specs -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
+ # Toolchain specific Compiler flags Note that we still link with our own
+ # linker script by providing it via the -T flag in SHARED_LDFLAGS.
+ TOOLCHAIN_CFLAGS = --specs=picolibc.specs
+
+ # picolibc internally uses __heap_start and __heap_end instead of the
+ # defacto chibios linker script standard __heap_base__ and __heap_end__
+ # therefore we introduce these symbols as an alias.
+ TOOLCHAIN_LDSYMBOLS = -Wl,--defsym=__heap_start=__heap_base__,--defsym=__heap_end=__heap_end__
+
+ # Tell QMK that we are compiling with picolibc.
+ OPT_DEFS += -DUSE_PICOLIBC
+ endif
+
+ # MCU architecture flags
+ MCUFLAGS = -march=$(MCU_ARCH) \
+ -mabi=$(MCU_ABI) \
+ -mcmodel=$(MCU_CMODEL) \
+ -mstrict-align
+else
+ # ARM toolchain specific configuration
+ TOOLCHAIN ?= arm-none-eabi-
+
+ # Toolchain specific Linker flags
+ TOOLCHAIN_LDFLAGS = -Wl,--no-wchar-size-warning \
+ --specs=nano.specs
+
+ # MCU architecture flags
+ MCUFLAGS = -mcpu=$(MCU) \
+ -mthumb -DTHUMB_PRESENT \
+ -mno-thumb-interwork -DTHUMB_NO_INTERWORKING \
+ -mno-unaligned-access
+
+ # Some ARM cores like the M4 and M7 have floating point units which can be enabled
+ USE_FPU ?= no
+
+ ifneq ($(USE_FPU),no)
+ OPT_DEFS += -DCORTEX_USE_FPU=TRUE
+
+ # Default is single precision floats
+ USE_FPU_OPT ?= -mfloat-abi=hard \
+ -mfpu=fpv4-sp-d16 \
+ -fsingle-precision-constant
+
+ MCUFLAGS += $(USE_FPU_OPT)
+ else
+ OPT_DEFS += -DCORTEX_USE_FPU=FALSE
+ endif
+endif
+
+# Assembler flags
+ASFLAGS += $(SHARED_ASFLAGS) $(TOOLCHAIN_ASFLAGS)
+
+# C Compiler flags
+CFLAGS += $(SHARED_CFLAGS) $(TOOLCHAIN_CFLAGS)
+
+# C++ Compiler flags
+CXXFLAGS += $(CFLAGS) $(SHARED_CXXFLAGS) $(TOOLCHAIN_CXXFLAGS) -fno-rtti
+
+# Linker flags
+LDFLAGS += $(SHARED_LDFLAGS) $(SHARED_LDSYMBOLS) $(TOOLCHAIN_LDFLAGS) $(TOOLCHAIN_LDSYMBOLS) $(MCUFLAGS)
+
+# Tell QMK that we are hosting it on ChibiOS.
+OPT_DEFS += -DPROTOCOL_CHIBIOS
+
+# Workaround to stop ChibiOS from complaining about new GCC -- it's been fixed for 7/8/9 already
+OPT_DEFS += -DPORT_IGNORE_GCC_VERSION_CHECK=1
+
+# Construct GCC toolchain
+CC = $(CC_PREFIX) $(TOOLCHAIN)gcc
+OBJCOPY = $(TOOLCHAIN)objcopy
+OBJDUMP = $(TOOLCHAIN)objdump
+SIZE = $(TOOLCHAIN)size
+AR = $(TOOLCHAIN)ar
+NM = $(TOOLCHAIN)nm
+HEX = $(OBJCOPY) -O $(FORMAT)
+EEP =
+BIN = $(OBJCOPY) -O binary
+
+##############################################################################
+# Make targets
+#
+
+DEBUG = gdb
+
+# List any extra directories to look for libraries here.
+EXTRALIBDIRS = $(RULESPATH)/ld
+
+bin: $(BUILD_DIR)/$(TARGET).bin sizeafter
+ $(COPY) $(BUILD_DIR)/$(TARGET).bin $(TARGET).bin;
diff --git a/platforms/chibios/platform_deps.h b/platforms/chibios/platform_deps.h
new file mode 100644
index 0000000000..8243dcec53
--- /dev/null
+++ b/platforms/chibios/platform_deps.h
@@ -0,0 +1,19 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <hal.h>
+#include "chibios_config.h"
diff --git a/platforms/chibios/sleep_led.c b/platforms/chibios/sleep_led.c
new file mode 100644
index 0000000000..477056a454
--- /dev/null
+++ b/platforms/chibios/sleep_led.c
@@ -0,0 +1,192 @@
+#include <ch.h>
+#include <hal.h>
+
+#include "led.h"
+#include "sleep_led.h"
+
+/* All right, we go the "software" way: timer, toggle LED in interrupt.
+ * Based on hasu's code for AVRs.
+ * Use LP timer on Kinetises, TIM14 on STM32F0.
+ */
+
+#ifndef SLEEP_LED_GPT_DRIVER
+# if defined(STM32F0XX)
+# define SLEEP_LED_GPT_DRIVER GPTD14
+# endif
+#endif
+
+#if defined(KL2x) || defined(K20x) || defined(SLEEP_LED_GPT_DRIVER) /* common parts for timers/interrupts */
+
+/* Breathing Sleep LED brighness(PWM On period) table
+ * (64[steps] * 4[duration]) / 64[PWM periods/s] = 4 second breath cycle
+ *
+ * http://www.wolframalpha.com/input/?i=%28sin%28+x%2F64*pi%29**8+*+255%2C+x%3D0+to+63
+ * (0..63).each {|x| p ((sin(x/64.0*PI)**8)*255).to_i }
+ */
+static const uint8_t breathing_table[64] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 4, 6, 10, 15, 23, 32, 44, 58, 74, 93, 113, 135, 157, 179, 199, 218, 233, 245, 252, 255, 252, 245, 233, 218, 199, 179, 157, 135, 113, 93, 74, 58, 44, 32, 23, 15, 10, 6, 4, 2, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+
+void sleep_led_timer_callback(void) {
+ /* Software PWM
+ * timer:1111 1111 1111 1111
+ * \_____/\/ \_______/____ count(0-255)
+ * \ \______________ duration of step(4)
+ * \__________________ index of step table(0-63)
+ */
+
+ // this works for cca 65536 irqs/sec
+ static union {
+ uint16_t row;
+ struct {
+ uint8_t count : 8;
+ uint8_t duration : 2;
+ uint8_t index : 6;
+ } pwm;
+ } timer = {.row = 0};
+
+ timer.row++;
+
+ // LED on
+ if (timer.pwm.count == 0) {
+ led_set(1 << USB_LED_CAPS_LOCK);
+ }
+ // LED off
+ if (timer.pwm.count == breathing_table[timer.pwm.index]) {
+ led_set(0);
+ }
+}
+
+#endif /* common parts for known platforms */
+
+#if defined(KL2x) || defined(K20x) /* platform selection: familiar Kinetis chips */
+
+/* Use Low Power Timer (LPTMR) */
+# define TIMER_INTERRUPT_VECTOR KINETIS_LPTMR0_IRQ_VECTOR
+# define RESET_COUNTER LPTMR0->CSR |= LPTMRx_CSR_TCF
+
+/* LPTMR clock options */
+# define LPTMR_CLOCK_MCGIRCLK 0 /* 4MHz clock */
+# define LPTMR_CLOCK_LPO 1 /* 1kHz clock */
+# define LPTMR_CLOCK_ERCLK32K 2 /* external 32kHz crystal */
+# define LPTMR_CLOCK_OSCERCLK 3 /* output from OSC */
+
+/* Work around inconsistencies in Freescale naming */
+# if !defined(SIM_SCGC5_LPTMR)
+# define SIM_SCGC5_LPTMR SIM_SCGC5_LPTIMER
+# endif
+
+/* interrupt handler */
+OSAL_IRQ_HANDLER(TIMER_INTERRUPT_VECTOR) {
+ OSAL_IRQ_PROLOGUE();
+
+ sleep_led_timer_callback();
+
+ /* Reset the counter */
+ RESET_COUNTER;
+
+ OSAL_IRQ_EPILOGUE();
+}
+
+/* Initialise the timer */
+void sleep_led_init(void) {
+ /* Make sure the clock to the LPTMR is enabled */
+ SIM->SCGC5 |= SIM_SCGC5_LPTMR;
+ /* Reset LPTMR settings */
+ LPTMR0->CSR = 0;
+ /* Set the compare value */
+ LPTMR0->CMR = 0; // trigger on counter value (i.e. every time)
+
+/* Set up clock source and prescaler */
+/* Software PWM
+ * ______ ______ __
+ * | ON |___OFF___| ON |___OFF___| ....
+ * |<-------------->|<-------------->|<- ....
+ * PWM period PWM period
+ *
+ * R interrupts/period[resolution]
+ * F periods/second[frequency]
+ * R * F interrupts/second
+ */
+
+/* === OPTION 1 === */
+# if 0
+ // 1kHz LPO
+ // No prescaler => 1024 irqs/sec
+ // Note: this is too slow for a smooth breathe
+ LPTMR0->PSR = LPTMRx_PSR_PCS(LPTMR_CLOCK_LPO)|LPTMRx_PSR_PBYP;
+# endif /* OPTION 1 */
+
+/* === OPTION 2 === */
+# if 1
+ // nMHz IRC (n=4 on KL25Z, KL26Z and K20x; n=2 or 8 on KL27Z)
+ MCG->C2 |= MCG_C2_IRCS; // fast (4MHz) internal ref clock
+# if defined(KL27) // divide the 8MHz IRC by 2, to have the same MCGIRCLK speed as others
+ MCG->MC |= MCG_MC_LIRC_DIV2_DIV2;
+# endif /* KL27 */
+ MCG->C1 |= MCG_C1_IRCLKEN; // enable internal ref clock
+ // to work in stop mode, also MCG_C1_IREFSTEN
+ // Divide 4MHz by 2^N (N=6) => 62500 irqs/sec =>
+ // => approx F=61, R=256, duration = 4
+ LPTMR0->PSR = LPTMRx_PSR_PCS(LPTMR_CLOCK_MCGIRCLK) | LPTMRx_PSR_PRESCALE(6);
+# endif /* OPTION 2 */
+
+/* === OPTION 3 === */
+# if 0
+ // OSC output (external crystal), usually 8MHz or 16MHz
+ OSC0->CR |= OSC_CR_ERCLKEN; // enable ext ref clock
+ // to work in stop mode, also OSC_CR_EREFSTEN
+ // Divide by 2^N
+ LPTMR0->PSR = LPTMRx_PSR_PCS(LPTMR_CLOCK_OSCERCLK)|LPTMRx_PSR_PRESCALE(7);
+# endif /* OPTION 3 */
+ /* === END OPTIONS === */
+
+ /* Interrupt on TCF set (compare flag) */
+ nvicEnableVector(LPTMR0_IRQn, 2); // vector, priority
+ LPTMR0->CSR |= LPTMRx_CSR_TIE;
+}
+
+void sleep_led_enable(void) {
+ /* Enable the timer */
+ LPTMR0->CSR |= LPTMRx_CSR_TEN;
+}
+
+void sleep_led_disable(void) {
+ /* Disable the timer */
+ LPTMR0->CSR &= ~LPTMRx_CSR_TEN;
+}
+
+void sleep_led_toggle(void) {
+ /* Toggle the timer */
+ LPTMR0->CSR ^= LPTMRx_CSR_TEN;
+}
+
+#elif defined(SLEEP_LED_GPT_DRIVER)
+
+static void gptTimerCallback(GPTDriver *gptp) {
+ (void)gptp;
+ sleep_led_timer_callback();
+}
+
+static const GPTConfig gptcfg = {1000000, gptTimerCallback, 0, 0};
+
+/* Initialise the timer */
+void sleep_led_init(void) { gptStart(&SLEEP_LED_GPT_DRIVER, &gptcfg); }
+
+void sleep_led_enable(void) { gptStartContinuous(&SLEEP_LED_GPT_DRIVER, gptcfg.frequency / 0xFFFF); }
+
+void sleep_led_disable(void) { gptStopTimer(&SLEEP_LED_GPT_DRIVER); }
+
+void sleep_led_toggle(void) { (SLEEP_LED_GPT_DRIVER.state == GPT_READY) ? sleep_led_enable() : sleep_led_disable(); }
+
+#else /* platform selection: not on familiar chips */
+
+void sleep_led_init(void) {}
+
+void sleep_led_enable(void) { led_set(1 << USB_LED_CAPS_LOCK); }
+
+void sleep_led_disable(void) { led_set(0); }
+
+void sleep_led_toggle(void) {
+ // not implemented
+}
+
+#endif /* platform selection */
diff --git a/platforms/chibios/suspend.c b/platforms/chibios/suspend.c
new file mode 100644
index 0000000000..9310a99920
--- /dev/null
+++ b/platforms/chibios/suspend.c
@@ -0,0 +1,92 @@
+/* TODO */
+
+#include <ch.h>
+#include <hal.h>
+
+#include "matrix.h"
+#include "action.h"
+#include "action_util.h"
+#include "mousekey.h"
+#include "programmable_button.h"
+#include "host.h"
+#include "suspend.h"
+#include "led.h"
+#include "wait.h"
+
+/** \brief suspend idle
+ *
+ * FIXME: needs doc
+ */
+void suspend_idle(uint8_t time) {
+ // TODO: this is not used anywhere - what units is 'time' in?
+ wait_ms(time);
+}
+
+/** \brief suspend power down
+ *
+ * FIXME: needs doc
+ */
+void suspend_power_down(void) {
+ suspend_power_down_quantum();
+ // on AVR, this enables the watchdog for 15ms (max), and goes to
+ // SLEEP_MODE_PWR_DOWN
+
+ wait_ms(17);
+}
+
+/** \brief suspend wakeup condition
+ *
+ * FIXME: needs doc
+ */
+__attribute__((weak)) void matrix_power_up(void) {}
+__attribute__((weak)) void matrix_power_down(void) {}
+bool suspend_wakeup_condition(void) {
+ matrix_power_up();
+ matrix_scan();
+ matrix_power_down();
+ for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
+ if (matrix_get_row(r)) return true;
+ }
+ return false;
+}
+
+/** \brief run user level code immediately after wakeup
+ *
+ * FIXME: needs doc
+ */
+__attribute__((weak)) void suspend_wakeup_init_user(void) {}
+
+/** \brief run keyboard level code immediately after wakeup
+ *
+ * FIXME: needs doc
+ */
+__attribute__((weak)) void suspend_wakeup_init_kb(void) { suspend_wakeup_init_user(); }
+
+/** \brief suspend wakeup condition
+ *
+ * run immediately after wakeup
+ * FIXME: needs doc
+ */
+void suspend_wakeup_init(void) {
+ // clear keyboard state
+ // need to do it manually, because we're running from ISR
+ // and clear_keyboard() calls print
+ // so only clear the variables in memory
+ // the reports will be sent from main.c afterwards
+ // or if the PC asks for GET_REPORT
+ clear_mods();
+ clear_weak_mods();
+ clear_keys();
+#ifdef MOUSEKEY_ENABLE
+ mousekey_clear();
+#endif /* MOUSEKEY_ENABLE */
+#ifdef PROGRAMMABLE_BUTTON_ENABLE
+ programmable_button_clear();
+#endif /* PROGRAMMABLE_BUTTON_ENABLE */
+#ifdef EXTRAKEY_ENABLE
+ host_system_send(0);
+ host_consumer_send(0);
+#endif /* EXTRAKEY_ENABLE */
+
+ suspend_wakeup_init_quantum();
+}
diff --git a/platforms/chibios/syscall-fallbacks.c b/platforms/chibios/syscall-fallbacks.c
new file mode 100644
index 0000000000..7150a46326
--- /dev/null
+++ b/platforms/chibios/syscall-fallbacks.c
@@ -0,0 +1,111 @@
+/* Copyright 2021 Nick Brassel, QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+
+/* To compile the ChibiOS syscall stubs with picolibc
+ * the _reent struct has to be defined. */
+#if defined(USE_PICOLIBC)
+struct _reent;
+struct timeval;
+#endif
+
+#pragma GCC diagnostic ignored "-Wmissing-prototypes"
+
+__attribute__((weak, used)) int _open_r(struct _reent *r, const char *path, int flag, int m) {
+ __errno_r(r) = ENOENT;
+ return -1;
+}
+
+__attribute__((weak, used)) int _lseek_r(struct _reent *r, int file, int ptr, int dir) {
+ __errno_r(r) = EBADF;
+ return -1;
+}
+
+__attribute__((weak, used)) int _read_r(struct _reent *r, int file, char *ptr, int len) {
+ __errno_r(r) = EBADF;
+ return -1;
+}
+
+__attribute__((weak, used)) int _write_r(struct _reent *r, int file, char *ptr, int len) {
+ __errno_r(r) = EBADF;
+ return -1;
+}
+
+__attribute__((weak, used)) int _close_r(struct _reent *r, int file) {
+ __errno_r(r) = EBADF;
+ return -1;
+}
+
+__attribute__((weak, used)) int _link_r(struct _reent *r, const char *oldpath, const char *newpath) {
+ __errno_r(r) = EPERM;
+ return -1;
+}
+
+__attribute__((weak, used)) int _unlink_r(struct _reent *r, const char *path) {
+ __errno_r(r) = EPERM;
+ return -1;
+}
+
+__attribute__((weak, used)) clock_t _times_r(struct _reent *r, void *t) {
+ __errno_r(r) = EFAULT;
+ return -1;
+}
+
+__attribute__((weak, used)) int _fstat_r(struct _reent *r, int file, struct stat *st) {
+ __errno_r(r) = EBADF;
+ return -1;
+}
+
+__attribute__((weak, used)) int _isatty_r(struct _reent *r, int fd) {
+ __errno_r(r) = EBADF;
+ return 0;
+}
+
+__attribute__((weak, used)) caddr_t _sbrk_r(struct _reent *r, int incr) {
+ __errno_r(r) = ENOMEM;
+ return (caddr_t)-1;
+}
+
+__attribute__((weak, used)) int _kill(int pid, int sig) {
+ errno = EPERM;
+ return -1;
+}
+
+__attribute__((weak, used)) pid_t _getpid(void) { return 1; }
+
+__attribute__((weak, used)) void _fini(void) { return; }
+
+__attribute__((weak, used, noreturn)) void _exit(int i) {
+ while (1)
+ ;
+}
+
+__attribute__((weak, used)) int _gettimeofday_r(struct _reent *r, struct timeval *t, void *tzp) {
+ __errno_r(r) = EPERM;
+ return -1;
+}
+
+__attribute__((weak, used)) void *__dso_handle;
+
+__attribute__((weak, used)) void __cxa_pure_virtual(void) {
+ while (1)
+ ;
+}
+
+#pragma GCC diagnostic pop
diff --git a/platforms/chibios/timer.c b/platforms/chibios/timer.c
new file mode 100644
index 0000000000..9f664e1f79
--- /dev/null
+++ b/platforms/chibios/timer.c
@@ -0,0 +1,47 @@
+#include <ch.h>
+
+#include "timer.h"
+
+static uint32_t reset_point = 0;
+#if CH_CFG_ST_RESOLUTION < 32
+static uint32_t last_systime = 0;
+static uint32_t overflow = 0;
+#endif
+
+void timer_init(void) { timer_clear(); }
+
+void timer_clear(void) {
+ reset_point = (uint32_t)chVTGetSystemTime();
+#if CH_CFG_ST_RESOLUTION < 32
+ last_systime = reset_point;
+ overflow = 0;
+#endif
+}
+
+uint16_t timer_read(void) { return (uint16_t)timer_read32(); }
+
+uint32_t timer_read32(void) {
+ uint32_t systime = (uint32_t)chVTGetSystemTime();
+
+#if CH_CFG_ST_RESOLUTION < 32
+ // If/when we need to support 64-bit chips, this may need to be modified to match the native bit-ness of the MCU.
+ // At this point, the only SysTick resolution allowed other than 32 is 16 bit.
+ // In the 16-bit case, at:
+ // - CH_CFG_ST_FREQUENCY = 100000, overflow will occur every ~0.65 seconds
+ // - CH_CFG_ST_FREQUENCY = 10000, overflow will occur every ~6.5 seconds
+ // - CH_CFG_ST_FREQUENCY = 1000, overflow will occur every ~65 seconds
+ // With this implementation, as long as we ensure a timer read happens at least once during the overflow period, timing should be accurate.
+ if (systime < last_systime) {
+ overflow += ((uint32_t)1) << CH_CFG_ST_RESOLUTION;
+ }
+
+ last_systime = systime;
+ return (uint32_t)TIME_I2MS(systime - reset_point + overflow);
+#else
+ return (uint32_t)TIME_I2MS(systime - reset_point);
+#endif
+}
+
+uint16_t timer_elapsed(uint16_t last) { return TIMER_DIFF_16(timer_read(), last); }
+
+uint32_t timer_elapsed32(uint32_t last) { return TIMER_DIFF_32(timer_read32(), last); }
diff --git a/platforms/chibios/wait.c b/platforms/chibios/wait.c
new file mode 100644
index 0000000000..56fd6ffcec
--- /dev/null
+++ b/platforms/chibios/wait.c
@@ -0,0 +1,41 @@
+/* Copyright 2021 QMK
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <ch.h>
+#include <hal.h>
+
+#include "_wait.h"
+
+#ifdef WAIT_US_TIMER
+void wait_us(uint16_t duration) {
+ static const GPTConfig gpt_cfg = {1000000, NULL, 0, 0}; /* 1MHz timer, no callback */
+
+ if (duration == 0) {
+ duration = 1;
+ }
+
+ /*
+ * Only use this timer on the main thread;
+ * other threads need to use their own timer.
+ */
+ if (chThdGetSelfX() == &ch.mainthread && duration < (1ULL << (sizeof(gptcnt_t) * 8))) {
+ gptStart(&WAIT_US_TIMER, &gpt_cfg);
+ gptPolledDelay(&WAIT_US_TIMER, duration);
+ } else {
+ chThdSleepMicroseconds(duration);
+ }
+}
+#endif