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-rw-r--r--common/avr/bootloader.c148
-rw-r--r--common/avr/eeconfig.c45
-rw-r--r--common/avr/suspend.c98
-rw-r--r--common/avr/suspend_avr.h27
4 files changed, 318 insertions, 0 deletions
diff --git a/common/avr/bootloader.c b/common/avr/bootloader.c
new file mode 100644
index 0000000000..cda295b181
--- /dev/null
+++ b/common/avr/bootloader.c
@@ -0,0 +1,148 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/io.h>
+#include <avr/interrupt.h>
+#include <avr/wdt.h>
+#include <util/delay.h>
+#include "bootloader.h"
+
+#ifdef PROTOCOL_LUFA
+#include <LUFA/Drivers/USB/USB.h>
+#endif
+
+
+/* Boot Section Size in *BYTEs*
+ * Teensy halfKay 512
+ * Teensy++ halfKay 1024
+ * Atmel DFU loader 4096
+ * LUFA bootloader 4096
+ * USBaspLoader 2048
+ */
+#ifndef BOOTLOADER_SIZE
+#warning To use bootloader_jump() you need to define BOOTLOADER_SIZE in config.h.
+#define BOOTLOADER_SIZE 4096
+#endif
+
+#define FLASH_SIZE (FLASHEND + 1L)
+#define BOOTLOADER_START (FLASH_SIZE - BOOTLOADER_SIZE)
+
+
+/*
+ * Entering the Bootloader via Software
+ * http://www.fourwalledcubicle.com/files/LUFA/Doc/120730/html/_page__software_bootloader_start.html
+ */
+#define BOOTLOADER_RESET_KEY 0xB007B007
+uint32_t reset_key __attribute__ ((section (".noinit")));
+
+/* initialize MCU status by watchdog reset */
+void bootloader_jump(void) {
+#ifdef PROTOCOL_LUFA
+ USB_Disable();
+ cli();
+ _delay_ms(2000);
+#endif
+
+#ifdef PROTOCOL_PJRC
+ cli();
+ UDCON = 1;
+ USBCON = (1<<FRZCLK);
+ UCSR1B = 0;
+ _delay_ms(5);
+#endif
+
+ // watchdog reset
+ reset_key = BOOTLOADER_RESET_KEY;
+ wdt_enable(WDTO_250MS);
+ for (;;);
+}
+
+
+/* this runs before main() */
+void bootloader_jump_after_watchdog_reset(void) __attribute__ ((used, naked, section (".init3")));
+void bootloader_jump_after_watchdog_reset(void)
+{
+ if ((MCUSR & (1<<WDRF)) && reset_key == BOOTLOADER_RESET_KEY) {
+ reset_key = 0;
+
+ // My custom USBasploader requires this to come up.
+ MCUSR = 0;
+
+ // Seems like Teensy halfkay loader requires clearing WDRF and disabling watchdog.
+ MCUSR &= ~(1<<WDRF);
+ wdt_disable();
+
+ // This is compled into 'icall', address should be in word unit, not byte.
+ ((void (*)(void))(BOOTLOADER_START/2))();
+ }
+}
+
+
+#if 0
+/* Jumping To The Bootloader
+ * http://www.pjrc.com/teensy/jump_to_bootloader.html
+ *
+ * This method doen't work when using LUFA. idk why.
+ * - needs to initialize more regisers or interrupt setting?
+ */
+void bootloader_jump(void) {
+#ifdef PROTOCOL_LUFA
+ USB_Disable();
+ cli();
+ _delay_ms(2000);
+#endif
+
+#ifdef PROTOCOL_PJRC
+ cli();
+ UDCON = 1;
+ USBCON = (1<<FRZCLK);
+ UCSR1B = 0;
+ _delay_ms(5);
+#endif
+
+ /*
+ * Initialize
+ */
+#if defined(__AVR_AT90USB162__)
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0;
+ TIMSK0 = 0; TIMSK1 = 0; UCSR1B = 0;
+ DDRB = 0; DDRC = 0; DDRD = 0;
+ PORTB = 0; PORTC = 0; PORTD = 0;
+#elif defined(__AVR_ATmega32U4__)
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK3 = 0; TIMSK4 = 0; UCSR1B = 0; TWCR = 0;
+ DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0; TWCR = 0;
+ PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+#elif defined(__AVR_AT90USB646__)
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+ DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+ PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+#elif defined(__AVR_AT90USB1286__)
+ EIMSK = 0; PCICR = 0; SPCR = 0; ACSR = 0; EECR = 0; ADCSRA = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0; TIMSK3 = 0; UCSR1B = 0; TWCR = 0;
+ DDRA = 0; DDRB = 0; DDRC = 0; DDRD = 0; DDRE = 0; DDRF = 0;
+ PORTA = 0; PORTB = 0; PORTC = 0; PORTD = 0; PORTE = 0; PORTF = 0;
+#endif
+
+ /*
+ * USBaspLoader
+ */
+#if defined(__AVR_ATmega168__) || defined(__AVR_ATmega168P__) || defined(__AVR_ATmega328P__)
+ // This makes custom USBasploader come up.
+ MCUSR = 0;
+
+ // initialize ports
+ PORTB = 0; PORTC= 0; PORTD = 0;
+ DDRB = 0; DDRC= 0; DDRD = 0;
+
+ // disable interrupts
+ EIMSK = 0; EECR = 0; SPCR = 0;
+ ACSR = 0; SPMCSR = 0; WDTCSR = 0; PCICR = 0;
+ TIMSK0 = 0; TIMSK1 = 0; TIMSK2 = 0;
+ ADCSRA = 0; TWCR = 0; UCSR0B = 0;
+#endif
+
+ // This is compled into 'icall', address should be in word unit, not byte.
+ ((void (*)(void))(BOOTLOADER_START/2))();
+}
+#endif
diff --git a/common/avr/eeconfig.c b/common/avr/eeconfig.c
new file mode 100644
index 0000000000..5bd47dc6ad
--- /dev/null
+++ b/common/avr/eeconfig.c
@@ -0,0 +1,45 @@
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/eeprom.h>
+#include "eeconfig.h"
+
+void eeconfig_init(void)
+{
+ eeprom_write_word(EECONFIG_MAGIC, EECONFIG_MAGIC_NUMBER);
+ eeprom_write_byte(EECONFIG_DEBUG, 0);
+ eeprom_write_byte(EECONFIG_DEFAULT_LAYER, 0);
+ eeprom_write_byte(EECONFIG_KEYMAP, 0);
+ eeprom_write_byte(EECONFIG_MOUSEKEY_ACCEL, 0);
+#ifdef BACKLIGHT_ENABLE
+ eeprom_write_byte(EECONFIG_BACKLIGHT, 0);
+#endif
+}
+
+void eeconfig_enable(void)
+{
+ eeprom_write_word(EECONFIG_MAGIC, EECONFIG_MAGIC_NUMBER);
+}
+
+void eeconfig_disable(void)
+{
+ eeprom_write_word(EECONFIG_MAGIC, 0xFFFF);
+}
+
+bool eeconfig_is_enabled(void)
+{
+ return (eeprom_read_word(EECONFIG_MAGIC) == EECONFIG_MAGIC_NUMBER);
+}
+
+uint8_t eeconfig_read_debug(void) { return eeprom_read_byte(EECONFIG_DEBUG); }
+void eeconfig_write_debug(uint8_t val) { eeprom_write_byte(EECONFIG_DEBUG, val); }
+
+uint8_t eeconfig_read_default_layer(void) { return eeprom_read_byte(EECONFIG_DEFAULT_LAYER); }
+void eeconfig_write_default_layer(uint8_t val) { eeprom_write_byte(EECONFIG_DEFAULT_LAYER, val); }
+
+uint8_t eeconfig_read_keymap(void) { return eeprom_read_byte(EECONFIG_KEYMAP); }
+void eeconfig_write_keymap(uint8_t val) { eeprom_write_byte(EECONFIG_KEYMAP, val); }
+
+#ifdef BACKLIGHT_ENABLE
+uint8_t eeconfig_read_backlight(void) { return eeprom_read_byte(EECONFIG_BACKLIGHT); }
+void eeconfig_write_backlight(uint8_t val) { eeprom_write_byte(EECONFIG_BACKLIGHT, val); }
+#endif
diff --git a/common/avr/suspend.c b/common/avr/suspend.c
new file mode 100644
index 0000000000..f44a036beb
--- /dev/null
+++ b/common/avr/suspend.c
@@ -0,0 +1,98 @@
+#include <stdbool.h>
+#include <avr/sleep.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+#include "matrix.h"
+#include "action.h"
+#include "backlight.h"
+#include "suspend_avr.h"
+#include "suspend.h"
+
+
+#define wdt_intr_enable(value) \
+__asm__ __volatile__ ( \
+ "in __tmp_reg__,__SREG__" "\n\t" \
+ "cli" "\n\t" \
+ "wdr" "\n\t" \
+ "sts %0,%1" "\n\t" \
+ "out __SREG__,__tmp_reg__" "\n\t" \
+ "sts %0,%2" "\n\t" \
+ : /* no outputs */ \
+ : "M" (_SFR_MEM_ADDR(_WD_CONTROL_REG)), \
+ "r" (_BV(_WD_CHANGE_BIT) | _BV(WDE)), \
+ "r" ((uint8_t) ((value & 0x08 ? _WD_PS3_MASK : 0x00) | \
+ _BV(WDIE) | (value & 0x07)) ) \
+ : "r0" \
+)
+
+
+void suspend_power_down(void)
+{
+#ifdef BACKLIGHT_ENABLE
+ backlight_set(0);
+#endif
+#ifndef NO_SUSPEND_POWER_DOWN
+ // Enable watchdog to wake from MCU sleep
+ cli();
+ wdt_reset();
+
+ // Watchdog Interrupt and System Reset Mode
+ //wdt_enable(WDTO_1S);
+ //WDTCSR |= _BV(WDIE);
+
+ // Watchdog Interrupt Mode
+ wdt_intr_enable(WDTO_120MS);
+
+ // TODO: more power saving
+ // See PicoPower application note
+ // - I/O port input with pullup
+ // - prescale clock
+ // - BOD disable
+ // - Power Reduction Register PRR
+ // sleep in power down mode
+ set_sleep_mode(SLEEP_MODE_PWR_DOWN);
+ sleep_enable();
+ sei();
+ sleep_cpu();
+ sleep_disable();
+
+ // Disable watchdog after sleep
+ wdt_disable();
+#endif
+}
+
+bool suspend_wakeup_condition(void)
+{
+ matrix_scan();
+ for (uint8_t r = 0; r < MATRIX_ROWS; r++) {
+ if (matrix_get_row(r)) return true;
+ }
+ return false;
+}
+
+// run immediately after wakeup
+void suspend_wakeup_init(void)
+{
+ // clear keyboard state
+ clear_keyboard();
+#ifdef BACKLIGHT_ENABLE
+ backlight_init();
+#endif
+}
+
+#ifndef NO_SUSPEND_POWER_DOWN
+/* watchdog timeout */
+ISR(WDT_vect)
+{
+ /* wakeup from MCU sleep mode */
+/*
+ // blink LED
+ static uint8_t led_state = 0;
+ static uint8_t led_count = 0;
+ led_count++;
+ if ((led_count & 0x07) == 0) {
+ led_set((led_state ^= (1<<USB_LED_CAPS_LOCK)));
+ }
+*/
+}
+#endif
diff --git a/common/avr/suspend_avr.h b/common/avr/suspend_avr.h
new file mode 100644
index 0000000000..357102da44
--- /dev/null
+++ b/common/avr/suspend_avr.h
@@ -0,0 +1,27 @@
+#ifndef SUSPEND_AVR_H
+#define SUSPEND_AVR_H
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <avr/sleep.h>
+#include <avr/wdt.h>
+#include <avr/interrupt.h>
+
+
+#define wdt_intr_enable(value) \
+__asm__ __volatile__ ( \
+ "in __tmp_reg__,__SREG__" "\n\t" \
+ "cli" "\n\t" \
+ "wdr" "\n\t" \
+ "sts %0,%1" "\n\t" \
+ "out __SREG__,__tmp_reg__" "\n\t" \
+ "sts %0,%2" "\n\t" \
+ : /* no outputs */ \
+ : "M" (_SFR_MEM_ADDR(_WD_CONTROL_REG)), \
+ "r" (_BV(_WD_CHANGE_BIT) | _BV(WDE)), \
+ "r" ((uint8_t) ((value & 0x08 ? _WD_PS3_MASK : 0x00) | \
+ _BV(WDIE) | (value & 0x07)) ) \
+ : "r0" \
+)
+
+#endif
generated by cgit v1.2.1 (git 2.18.0) at 2024-11-10 12:43:32 +0000