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authorJoel Challis <git@zvecr.com>2021-08-17 23:43:09 +0100
committerGitHub <noreply@github.com>2021-08-17 23:43:09 +0100
commit1bb7af4d446174b7181c9bb22dbd14c93642ea10 (patch)
tree894eceeb29cc2c00f6b0f08a4ca177da7f172424 /drivers/chibios/ws2812_pwm.c
parent483691dd73e5260fac958c524e0a12e705db43f6 (diff)
downloadqmk_firmware-1bb7af4d446174b7181c9bb22dbd14c93642ea10.tar.gz
qmk_firmware-1bb7af4d446174b7181c9bb22dbd14c93642ea10.zip
Relocate platform specific drivers (#13894)
* Relocate platform specific drivers * Move stm eeprom * Tidy up slightly
Diffstat (limited to 'drivers/chibios/ws2812_pwm.c')
-rw-r--r--drivers/chibios/ws2812_pwm.c311
1 files changed, 0 insertions, 311 deletions
diff --git a/drivers/chibios/ws2812_pwm.c b/drivers/chibios/ws2812_pwm.c
deleted file mode 100644
index e6af55b6b3..0000000000
--- a/drivers/chibios/ws2812_pwm.c
+++ /dev/null
@@ -1,311 +0,0 @@
-#include "ws2812.h"
-#include "quantum.h"
-#include <hal.h>
-
-/* Adapted from https://github.com/joewa/WS2812-LED-Driver_ChibiOS/ */
-
-#ifdef RGBW
-# error "RGBW not supported"
-#endif
-
-#ifndef WS2812_PWM_DRIVER
-# define WS2812_PWM_DRIVER PWMD2 // TIMx
-#endif
-#ifndef WS2812_PWM_CHANNEL
-# define WS2812_PWM_CHANNEL 2 // Channel
-#endif
-#ifndef WS2812_PWM_PAL_MODE
-# define WS2812_PWM_PAL_MODE 2 // DI Pin's alternate function value
-#endif
-#ifndef WS2812_DMA_STREAM
-# define WS2812_DMA_STREAM STM32_DMA1_STREAM2 // DMA Stream for TIMx_UP
-#endif
-#ifndef WS2812_DMA_CHANNEL
-# define WS2812_DMA_CHANNEL 2 // DMA Channel for TIMx_UP
-#endif
-#if (STM32_DMA_SUPPORTS_DMAMUX == TRUE) && !defined(WS2812_DMAMUX_ID)
-# error "please consult your MCU's datasheet and specify in your config.h: #define WS2812_DMAMUX_ID STM32_DMAMUX1_TIM?_UP"
-#endif
-
-#ifndef WS2812_PWM_COMPLEMENTARY_OUTPUT
-# define WS2812_PWM_OUTPUT_MODE PWM_OUTPUT_ACTIVE_HIGH
-#else
-# if !STM32_PWM_USE_ADVANCED
-# error "WS2812_PWM_COMPLEMENTARY_OUTPUT requires STM32_PWM_USE_ADVANCED == TRUE"
-# endif
-# define WS2812_PWM_OUTPUT_MODE PWM_COMPLEMENTARY_OUTPUT_ACTIVE_HIGH
-#endif
-
-// Push Pull or Open Drain Configuration
-// Default Push Pull
-#ifndef WS2812_EXTERNAL_PULLUP
-# if defined(USE_GPIOV1)
-# define WS2812_OUTPUT_MODE PAL_MODE_STM32_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
-# endif
-#else
-# if defined(USE_GPIOV1)
-# define WS2812_OUTPUT_MODE PAL_MODE_STM32_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
-# endif
-#endif
-
-#ifndef WS2812_PWM_TARGET_PERIOD
-//# define WS2812_PWM_TARGET_PERIOD 800000 // Original code is 800k...?
-# define WS2812_PWM_TARGET_PERIOD 80000 // TODO: work out why 10x less on f303/f4x1
-#endif
-
-/* --- PRIVATE CONSTANTS ---------------------------------------------------- */
-
-#define WS2812_PWM_FREQUENCY (STM32_SYSCLK / 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) */
-
-/**
- * @brief Number of bit-periods to hold the data line low at the end of a frame
- *
- * 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_RESET_BIT_N (1000 * WS2812_TRST_US / 1250)
-#define WS2812_COLOR_BIT_N (RGBLED_NUM * 24) /**< Number of data bits */
-#define WS2812_BIT_N (WS2812_COLOR_BIT_N + WS2812_RESET_BIT_N) /**< Total number of bits in a frame */
-
-/**
- * @brief High period for a zero, in ticks
- *
- * Per the datasheet:
- * WS2812:
- * - T0H: 200 nS to 500 nS, inclusive
- * - T0L: 650 nS to 950 nS, inclusive
- * WS2812B:
- * - T0H: 200 nS to 500 nS, inclusive
- * - T0L: 750 nS to 1050 nS, inclusive
- *
- * The duty cycle is calculated for a high period of 350 nS.
- */
-#define WS2812_DUTYCYCLE_0 (WS2812_PWM_FREQUENCY / (1000000000 / 350))
-
-/**
- * @brief High period for a one, in ticks
- *
- * Per the datasheet:
- * WS2812:
- * - T1H: 550 nS to 850 nS, inclusive
- * - T1L: 450 nS to 750 nS, inclusive
- * WS2812B:
- * - T1H: 750 nS to 1050 nS, inclusive
- * - T1L: 200 nS to 500 nS, inclusive
- *
- * The duty cycle is calculated for a high period of 800 nS.
- * This is in the middle of the specifications of the WS2812 and WS2812B.
- */
-#define WS2812_DUTYCYCLE_1 (WS2812_PWM_FREQUENCY / (1000000000 / 800))
-
-/* --- PRIVATE MACROS ------------------------------------------------------- */
-
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given bit
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] byte: The byte number [0, 2]
- * @param[in] bit: The bit number [0, 7]
- *
- * @return The bit index
- */
-#define WS2812_BIT(led, byte, bit) (24 * (led) + 8 * (byte) + (7 - (bit)))
-
-#if (WS2812_BYTE_ORDER == WS2812_BYTE_ORDER_GRB)
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given red bit
- *
- * @note The red byte is the middle byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit number [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_RED_BIT(led, bit) WS2812_BIT((led), 1, (bit))
-
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given green bit
- *
- * @note The red byte is the first byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit number [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_GREEN_BIT(led, bit) WS2812_BIT((led), 0, (bit))
-
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given blue bit
- *
- * @note The red byte is the last byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit index [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_BLUE_BIT(led, bit) WS2812_BIT((led), 2, (bit))
-
-#elif (WS2812_BYTE_ORDER == WS2812_BYTE_ORDER_RGB)
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given red bit
- *
- * @note The red byte is the middle byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit number [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_RED_BIT(led, bit) WS2812_BIT((led), 0, (bit))
-
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given green bit
- *
- * @note The red byte is the first byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit number [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_GREEN_BIT(led, bit) WS2812_BIT((led), 1, (bit))
-
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given blue bit
- *
- * @note The red byte is the last byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit index [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_BLUE_BIT(led, bit) WS2812_BIT((led), 2, (bit))
-
-#elif (WS2812_BYTE_ORDER == WS2812_BYTE_ORDER_BGR)
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given red bit
- *
- * @note The red byte is the middle byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit number [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_RED_BIT(led, bit) WS2812_BIT((led), 2, (bit))
-
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given green bit
- *
- * @note The red byte is the first byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit number [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_GREEN_BIT(led, bit) WS2812_BIT((led), 1, (bit))
-
-/**
- * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given blue bit
- *
- * @note The red byte is the last byte in the color packet
- *
- * @param[in] led: The led index [0, @ref RGBLED_NUM)
- * @param[in] bit: The bit index [0, 7]
- *
- * @return The bit index
- */
-# define WS2812_BLUE_BIT(led, bit) WS2812_BIT((led), 0, (bit))
-#endif
-
-/* --- PRIVATE VARIABLES ---------------------------------------------------- */
-
-static uint32_t ws2812_frame_buffer[WS2812_BIT_N + 1]; /**< Buffer for a frame */
-
-/* --- PUBLIC FUNCTIONS ----------------------------------------------------- */
-/*
- * Gedanke: Double-buffer type transactions: double buffer transfers using two memory pointers for
-the memory (while the DMA is reading/writing from/to a buffer, the application can
-write/read to/from the other buffer).
- */
-
-void ws2812_init(void) {
- // Initialize led frame buffer
- uint32_t i;
- for (i = 0; i < WS2812_COLOR_BIT_N; i++) ws2812_frame_buffer[i] = WS2812_DUTYCYCLE_0; // All color bits are zero duty cycle
- for (i = 0; i < WS2812_RESET_BIT_N; i++) ws2812_frame_buffer[i + WS2812_COLOR_BIT_N] = 0; // All reset bits are zero
-
- palSetLineMode(RGB_DI_PIN, WS2812_OUTPUT_MODE);
-
- // PWM Configuration
- //#pragma GCC diagnostic ignored "-Woverride-init" // Turn off override-init warning for this struct. We use the overriding ability to set a "default" channel config
- static const PWMConfig ws2812_pwm_config = {
- .frequency = WS2812_PWM_FREQUENCY,
- .period = WS2812_PWM_PERIOD, // Mit dieser Periode wird UDE-Event erzeugt und ein neuer Wert (Länge WS2812_BIT_N) vom DMA ins CCR geschrieben
- .callback = NULL,
- .channels =
- {
- [0 ... 3] = {.mode = PWM_OUTPUT_DISABLED, .callback = NULL}, // Channels default to disabled
- [WS2812_PWM_CHANNEL - 1] = {.mode = WS2812_PWM_OUTPUT_MODE, .callback = NULL}, // Turn on the channel we care about
- },
- .cr2 = 0,
- .dier = TIM_DIER_UDE, // DMA on update event for next period
- };
- //#pragma GCC diagnostic pop // Restore command-line warning options
-
- // Configure DMA
- // dmaInit(); // Joe added this
- dmaStreamAlloc(WS2812_DMA_STREAM - STM32_DMA_STREAM(0), 10, NULL, NULL);
- dmaStreamSetPeripheral(WS2812_DMA_STREAM, &(WS2812_PWM_DRIVER.tim->CCR[WS2812_PWM_CHANNEL - 1])); // Ziel ist der An-Zeit im Cap-Comp-Register
- dmaStreamSetMemory0(WS2812_DMA_STREAM, ws2812_frame_buffer);
- dmaStreamSetTransactionSize(WS2812_DMA_STREAM, WS2812_BIT_N);
- dmaStreamSetMode(WS2812_DMA_STREAM, STM32_DMA_CR_CHSEL(WS2812_DMA_CHANNEL) | STM32_DMA_CR_DIR_M2P | STM32_DMA_CR_PSIZE_WORD | STM32_DMA_CR_MSIZE_WORD | STM32_DMA_CR_MINC | STM32_DMA_CR_CIRC | STM32_DMA_CR_PL(3));
- // M2P: Memory 2 Periph; PL: Priority Level
-
-#if (STM32_DMA_SUPPORTS_DMAMUX == TRUE)
- // If the MCU has a DMAMUX we need to assign the correct resource
- dmaSetRequestSource(WS2812_DMA_STREAM, WS2812_DMAMUX_ID);
-#endif
-
- // Start DMA
- dmaStreamEnable(WS2812_DMA_STREAM);
-
- // Configure PWM
- // NOTE: It's required that preload be enabled on the timer channel CCR register. This is currently enabled in the
- // ChibiOS driver code, so we don't have to do anything special to the timer. If we did, we'd have to start the timer,
- // disable counting, enable the channel, and then make whatever configuration changes we need.
- pwmStart(&WS2812_PWM_DRIVER, &ws2812_pwm_config);
- pwmEnableChannel(&WS2812_PWM_DRIVER, WS2812_PWM_CHANNEL - 1, 0); // Initial period is 0; output will be low until first duty cycle is DMA'd in
-}
-
-void ws2812_write_led(uint16_t led_number, uint8_t r, uint8_t g, uint8_t b) {
- // 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;
- }
-}
-
-// Setleds for standard RGB
-void ws2812_setleds(LED_TYPE* ledarray, uint16_t leds) {
- static bool s_init = false;
- if (!s_init) {
- ws2812_init();
- s_init = true;
- }
-
- for (uint16_t i = 0; i < leds; i++) {
- ws2812_write_led(i, ledarray[i].r, ledarray[i].g, ledarray[i].b);
- }
-}