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@@ -1,133 +0,0 @@
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-/*
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- * LEDDriver.c
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- *
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- * Created on: Aug 26, 2013
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- * Author: Omri Iluz
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- */
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-
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-#include "ws2812.h"
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-#include <stdlib.h>
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-
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-#define BYTES_FOR_LED_BYTE 4
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-#define NB_COLORS 3
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-#define BYTES_FOR_LED BYTES_FOR_LED_BYTE*NB_COLORS
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-#define DATA_SIZE BYTES_FOR_LED*NB_LEDS
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-#define RESET_SIZE 200
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-#define PREAMBLE_SIZE 4
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-// Define the spi your LEDs are plugged to here
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-#define WS2812_SPI SPID2
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-// Define the number of LEDs you wish to control in your LED strip
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-#define NB_LEDS RGBLED_NUM
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-
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- #define LED_SPIRAL 1
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-
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- static uint8_t txbuf[PREAMBLE_SIZE + DATA_SIZE + RESET_SIZE];
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-static uint8_t get_protocol_eq(uint8_t data, int pos);
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-
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- /*
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- * This lib is meant to be used asynchronously, thus the colors contained in
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- * the txbuf will be sent in loop, so that the colors are always the ones you
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- * put in the table (the user thus have less to worry about)
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- *
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- * Since the data are sent via DMA, and the call to spiSend is a blocking one,
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- * the processor ressources are not used to much, if you see your program being
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- * too slow, simply add a:
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- * chThdSleepMilliseconds(x);
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- * after the spiSend, where you increment x untill you are satisfied with your
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- * program speed, another trick may be to lower this thread priority : your call
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- */
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-static THD_WORKING_AREA(LEDS_THREAD_WA, 128);
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-static THD_FUNCTION(ledsThread, arg) {
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- (void) arg;
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- while(1){
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- spiSend(&WS2812_SPI, PREAMBLE_SIZE + DATA_SIZE + RESET_SIZE, txbuf);
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- }
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-}
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-
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- static const SPIConfig spicfg = {
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- false,
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- NULL,
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- PORT_WS2812,
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- PIN_WS2812,
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- SPI_CR1_BR_1|SPI_CR1_BR_0 // baudrate : fpclk / 8 => 1tick is 0.32us (2.25 MHz)
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-};
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-
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- /*
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- * Function used to initialize the driver.
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- *
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- * Starts by shutting off all the LEDs.
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- * Then gets access on the LED_SPI driver.
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- * May eventually launch an animation on the LEDs (e.g. a thread setting the
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- * txbuff values)
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- */
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-void leds_init(void){
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- /* MOSI pin*/
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- palSetPadMode(PORT_WS2812, PIN_WS2812, PAL_MODE_STM32_ALTERNATE_PUSHPULL);
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- for(int i = 0; i < RESET_SIZE; i++)
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- txbuf[DATA_SIZE+i] = 0x00;
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- for (int i=0; i<PREAMBLE_SIZE; i++)
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- txbuf[i] = 0x00;
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- spiAcquireBus(&WS2812_SPI); /* Acquire ownership of the bus. */
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- spiStart(&WS2812_SPI, &spicfg); /* Setup transfer parameters. */
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- spiSelect(&WS2812_SPI); /* Slave Select assertion. */
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- chThdCreateStatic(LEDS_THREAD_WA, sizeof(LEDS_THREAD_WA),NORMALPRIO, ledsThread, NULL);
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-}
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-
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- /*
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- * As the trick here is to use the SPI to send a huge pattern of 0 and 1 to
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- * the ws2812b protocol, we use this helper function to translate bytes into
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- * 0s and 1s for the LED (with the appropriate timing).
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- */
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-static uint8_t get_protocol_eq(uint8_t data, int pos){
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- uint8_t eq = 0;
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- if (data & (1 << (2*(3-pos))))
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- eq = 0b1110;
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- else
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- eq = 0b1000;
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- if (data & (2 << (2*(3-pos))))
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- eq += 0b11100000;
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- else
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- eq += 0b10000000;
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- return eq;
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-}
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-
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-
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- void WS2812_init(void) {
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- leds_init();
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-}
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-
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- void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds) {
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- uint8_t i = 0;
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- while (i < number_of_leds) {
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- set_led_color_rgb(ledarray[i], i);
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- i++;
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- }
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-}
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-
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- /*
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- * If you want to set a LED's color in the RGB color space, simply call this
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- * function with a hsv_color containing the desired color and the index of the
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- * led on the LED strip (starting from 0, the first one being the closest the
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- * first plugged to the board)
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- *
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- * Only set the color of the LEDs through the functions given by this API
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- * (unless you really know what you are doing)
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- */
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-void set_led_color_rgb(LED_TYPE color, int pos){
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- for(int j = 0; j < 4; j++)
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- txbuf[PREAMBLE_SIZE + BYTES_FOR_LED*pos + j] = get_protocol_eq(color.g, j);
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- for(int j = 0; j < 4; j++)
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- txbuf[PREAMBLE_SIZE + BYTES_FOR_LED*pos + BYTES_FOR_LED_BYTE+j] = get_protocol_eq(color.r, j);
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- for(int j = 0; j < 4; j++)
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- txbuf[PREAMBLE_SIZE + BYTES_FOR_LED*pos + BYTES_FOR_LED_BYTE*2+j] = get_protocol_eq(color.b, j);
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-}
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-
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- void set_leds_color_rgb(LED_TYPE color){
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- for(int i = 0; i < NB_LEDS; i++)
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- set_led_color_rgb(color, i);
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-}
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-
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-
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- void ws2812_setleds_rgbw(LED_TYPE *ledarray, uint16_t number_of_leds) {
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-
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- }
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Joel Challis