From 26eef35f07698d23aafae90e1c230b52e100a334 Mon Sep 17 00:00:00 2001 From: James Young Date: Sat, 29 Feb 2020 12:00:00 -0800 Subject: 2020 February 29 Breaking Changes Update (#8064) --- keyboards/matrix/noah/ws2812_f4.c | 272 -------------------------------------- 1 file changed, 272 deletions(-) delete mode 100644 keyboards/matrix/noah/ws2812_f4.c (limited to 'keyboards/matrix/noah/ws2812_f4.c') diff --git a/keyboards/matrix/noah/ws2812_f4.c b/keyboards/matrix/noah/ws2812_f4.c deleted file mode 100644 index 7536d6d8c..000000000 --- a/keyboards/matrix/noah/ws2812_f4.c +++ /dev/null @@ -1,272 +0,0 @@ -/** - * @file ws2812.c - * @author Austin Glaser , Joerg Wangemann - * @brief WS2812 LED driver - * - * Copyright (C) 2016 Austin Glaser, 2017 Joerg Wangemann - * - * This software may be modified and distributed under the terms - * of the MIT license. See the LICENSE file for details. - * - * @todo Put in names and descriptions of variables which need to be defined to use this file - * - * @addtogroup WS2812 - * @{ - */ - -/* --- PRIVATE DEPENDENCIES ------------------------------------------------- */ - -// This Driver -#include "ws2812_f4.h" - -// Standard -#include - -// ChibiOS -#include "ch.h" -#include "hal.h" - -#include "wait.h" -// Application -//#include "board.h" - -// TODO: Add these #define's to the headers of your project. -// Pin, timer and dma are all connected, check them all if you change one. -// Tested with STM32F4, working at 144 or 168 MHz. -//#define WS2812_LED_N 2 // Number of LEDs -//#define PORT_WS2812 GPIOB -//#define PIN_WS2812 9 -//#define WS2812_TIM_N 4 // timer, 1-11 -//#define WS2812_TIM_CH 3 // timer channel, 0-3 -//#define WS2812_DMA_STREAM STM32_DMA1_STREAM2 // DMA stream for TIMx_UP (look up in reference manual under DMA Channel selection) -//#define WS2812_DMA_CHANNEL 6 // DMA channel for TIMx_UP -// The WS2812 expects 5V signal level (or at least 0.7 * VDD). Sometimes it works -// with a 3V signal level, otherwise the easiest way to get the signal level to 5V -// is to add an external pullup resistor from the DI pin to 5V (10k will do) and -// configure the pin as open drain. -// (An SMD resistor is easily solders on the connections of a light strip) -// Uncomment the next line if an external pullup resistor is used. -//#define WS2812_EXTERNAL_PULLUP - -/* --- CONFIGURATION CHECK -------------------------------------------------- */ - -#if !defined(WS2812_LED_N) - #error WS2812 LED chain length not specified -#elif WS2812_LED_N <= 0 - #error WS2812 LED chain length set to invalid value -#endif - -#if !defined(WS2812_TIM_N) - #error WS2812 timer not specified -#endif -#if defined(STM32F2XX) || defined(STM32F4XX) || defined(STM32F7XX) - #if WS2812_TIM_N <= 2 - #define WS2812_AF 1 - #elif WS2812_TIM_N <= 5 - #define WS2812_AF 2 - #elif WS2812_TIM_N <= 11 - #define WS2812_AF 3 - #endif -#elif !defined(WS2812_AF) - #error WS2812_AF timer alternate function not specified -#endif - -#if !defined(WS2812_TIM_CH) - #error WS2812 timer channel not specified -#elif WS2812_TIM_CH >= 4 - #error WS2812 timer channel set to invalid value -#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/800000) /**< 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 must be at least 50 uS; so we add in 50 bit-times - * of zeroes at the end. (50 bits)*(1.25 uS/bit) = 62.5 uS, which gives us some - * slack in the timing requirements - */ -#define WS2812_RESET_BIT_N (50) -#define WS2812_COLOR_BIT_N (WS2812_LED_N*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/(1000000000/450)) - -/** - * @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/(1000000000/900)) - -/* --- PRIVATE MACROS ------------------------------------------------------- */ - -/** - * @brief Generates a reference to a numbered PWM driver - * - * @param[in] n: The driver (timer) number - * - * @return A reference to the driver - */ -#define PWMD(n) CONCAT_EXPANDED_SYMBOLS(PWMD, n) - -#define WS2812_PWMD PWMD(WS2812_TIM_N) /**< The PWM driver to use for the LED chain */ - -/** - * @brief Determine the index in @ref ws2812_frame_buffer "the frame buffer" of a given bit - * - * @param[in] led: The led index [0, @ref WS2812_LED_N) - * @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))) - -/** - * @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 WS2812_LED_N) - * @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 green byte is the first byte in the color packet - * - * @param[in] led: The led index [0, @ref WS2812_LED_N) - * @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 blue 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_BLUE_BIT(led, bit) WS2812_BIT((led), 2, (bit)) - -/* --- 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 - // Configure pin as AF output. If there's an external pull up resistor the signal level is brought to 5V using open drain mode. -#ifdef WS2812_EXTERNAL_PULLUP - palSetPadMode(PORT_WS2812, PIN_WS2812, PAL_MODE_ALTERNATE(WS2812_AF) | PAL_STM32_OTYPE_OPENDRAIN); -#else - palSetPadMode(PORT_WS2812, PIN_WS2812, PAL_MODE_ALTERNATE(WS2812_AF) | PAL_STM32_OTYPE_PUSHPULL); //PAL_MODE_STM32_ALTERNATE_PUSHPULL); -#endif - //palClearPad(PORT_WS2812, PIN_WS2812); - //wait_ms(1); - // 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_TIM_CH] = {.mode = PWM_OUTPUT_ACTIVE_HIGH, .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 - dmaStreamAllocate(WS2812_DMA_STREAM, 10, NULL, NULL); - dmaStreamSetPeripheral(WS2812_DMA_STREAM, &(WS2812_PWMD.tim->CCR[WS2812_TIM_CH])); // 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 - - // 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_PWMD, &ws2812_pwm_config); - pwmEnableChannel(&WS2812_PWMD, WS2812_TIM_CH, 0); // Initial period is 0; output will be low until first duty cycle is DMA'd in -} - -ws2812_err_t ws2812_write_led(uint32_t led_number, uint8_t r, uint8_t g, uint8_t b) -{ - // Check for valid LED - if (led_number > WS2812_LED_N) return WS2812_LED_INVALID; - - // Write color to frame buffer - for (uint32_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; - } - - // Success - return WS2812_SUCCESS; -} - -void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds) -{ - for(int i = 0; i < number_of_leds; i++) { - ws2812_write_led(i, ledarray[i].r, ledarray[i].g, ledarray[i].b); - } -} - -/** @} addtogroup WS2812 */ -- cgit v1.2.3