mirror of
https://github.com/qmk/qmk_firmware.git
synced 2024-12-17 23:23:21 +00:00
7186d1581a
* Move boards to cannonkeys and share resources * Share common files between cannonkey boards * Fix ortho60 keymap * update LED numbers * Add RGB keys to Ortho60 and Ortho48 * Add Backlight control to default layout Ortho60 and 48 * Remove unnecessary ws2812.c SRC from rules.mk
133 lines
4.0 KiB
C
133 lines
4.0 KiB
C
/*
|
|
* LEDDriver.c
|
|
*
|
|
* Created on: Aug 26, 2013
|
|
* Author: Omri Iluz
|
|
*/
|
|
|
|
#include "ws2812.h"
|
|
#include "stdlib.h"
|
|
|
|
#define BYTES_FOR_LED_BYTE 4
|
|
#define NB_COLORS 3
|
|
#define BYTES_FOR_LED BYTES_FOR_LED_BYTE*NB_COLORS
|
|
#define DATA_SIZE BYTES_FOR_LED*NB_LEDS
|
|
#define RESET_SIZE 200
|
|
#define PREAMBLE_SIZE 4
|
|
// Define the spi your LEDs are plugged to here
|
|
#define WS2812_SPI SPID2
|
|
// Define the number of LEDs you wish to control in your LED strip
|
|
#define NB_LEDS RGBLED_NUM
|
|
|
|
#define LED_SPIRAL 1
|
|
|
|
static uint8_t txbuf[PREAMBLE_SIZE + DATA_SIZE + RESET_SIZE];
|
|
static uint8_t get_protocol_eq(uint8_t data, int pos);
|
|
|
|
/*
|
|
* This lib is meant to be used asynchronously, thus the colors contained in
|
|
* the txbuf will be sent in loop, so that the colors are always the ones you
|
|
* put in the table (the user thus have less to worry about)
|
|
*
|
|
* Since the data are sent via DMA, and the call to spiSend is a blocking one,
|
|
* the processor ressources are not used to much, if you see your program being
|
|
* too slow, simply add a:
|
|
* chThdSleepMilliseconds(x);
|
|
* after the spiSend, where you increment x untill you are satisfied with your
|
|
* program speed, another trick may be to lower this thread priority : your call
|
|
*/
|
|
static THD_WORKING_AREA(LEDS_THREAD_WA, 128);
|
|
static THD_FUNCTION(ledsThread, arg) {
|
|
(void) arg;
|
|
while(1){
|
|
spiSend(&WS2812_SPI, PREAMBLE_SIZE + DATA_SIZE + RESET_SIZE, txbuf);
|
|
}
|
|
}
|
|
|
|
static const SPIConfig spicfg = {
|
|
NULL,
|
|
PORT_WS2812,
|
|
PIN_WS2812,
|
|
SPI_CR1_BR_1|SPI_CR1_BR_0 // baudrate : fpclk / 8 => 1tick is 0.32us (2.25 MHz)
|
|
};
|
|
|
|
/*
|
|
* Function used to initialize the driver.
|
|
*
|
|
* Starts by shutting off all the LEDs.
|
|
* Then gets access on the LED_SPI driver.
|
|
* May eventually launch an animation on the LEDs (e.g. a thread setting the
|
|
* txbuff values)
|
|
*/
|
|
void leds_init(void){
|
|
/* MOSI pin*/
|
|
palSetPadMode(PORT_WS2812, PIN_WS2812, PAL_MODE_STM32_ALTERNATE_PUSHPULL);
|
|
for(int i = 0; i < RESET_SIZE; i++)
|
|
txbuf[DATA_SIZE+i] = 0x00;
|
|
for (int i=0; i<PREAMBLE_SIZE; i++)
|
|
txbuf[i] = 0x00;
|
|
spiAcquireBus(&WS2812_SPI); /* Acquire ownership of the bus. */
|
|
spiStart(&WS2812_SPI, &spicfg); /* Setup transfer parameters. */
|
|
spiSelect(&WS2812_SPI); /* Slave Select assertion. */
|
|
chThdCreateStatic(LEDS_THREAD_WA, sizeof(LEDS_THREAD_WA),NORMALPRIO, ledsThread, NULL);
|
|
}
|
|
|
|
/*
|
|
* As the trick here is to use the SPI to send a huge pattern of 0 and 1 to
|
|
* the ws2812b protocol, we use this helper function to translate bytes into
|
|
* 0s and 1s for the LED (with the appropriate timing).
|
|
*/
|
|
static uint8_t get_protocol_eq(uint8_t data, int pos){
|
|
uint8_t eq = 0;
|
|
if (data & (1 << (2*(3-pos))))
|
|
eq = 0b1110;
|
|
else
|
|
eq = 0b1000;
|
|
if (data & (2 << (2*(3-pos))))
|
|
eq += 0b11100000;
|
|
else
|
|
eq += 0b10000000;
|
|
return eq;
|
|
}
|
|
|
|
|
|
void WS2812_init(void) {
|
|
leds_init();
|
|
}
|
|
|
|
void ws2812_setleds(LED_TYPE *ledarray, uint16_t number_of_leds) {
|
|
uint8_t i = 0;
|
|
while (i < number_of_leds) {
|
|
set_led_color_rgb(ledarray[i], i);
|
|
i++;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* If you want to set a LED's color in the RGB color space, simply call this
|
|
* function with a hsv_color containing the desired color and the index of the
|
|
* led on the LED strip (starting from 0, the first one being the closest the
|
|
* first plugged to the board)
|
|
*
|
|
* Only set the color of the LEDs through the functions given by this API
|
|
* (unless you really know what you are doing)
|
|
*/
|
|
void set_led_color_rgb(LED_TYPE color, int pos){
|
|
for(int j = 0; j < 4; j++)
|
|
txbuf[PREAMBLE_SIZE + BYTES_FOR_LED*pos + j] = get_protocol_eq(color.g, j);
|
|
for(int j = 0; j < 4; j++)
|
|
txbuf[PREAMBLE_SIZE + BYTES_FOR_LED*pos + BYTES_FOR_LED_BYTE+j] = get_protocol_eq(color.r, j);
|
|
for(int j = 0; j < 4; j++)
|
|
txbuf[PREAMBLE_SIZE + BYTES_FOR_LED*pos + BYTES_FOR_LED_BYTE*2+j] = get_protocol_eq(color.b, j);
|
|
}
|
|
|
|
void set_leds_color_rgb(LED_TYPE color){
|
|
for(int i = 0; i < NB_LEDS; i++)
|
|
set_led_color_rgb(color, i);
|
|
}
|
|
|
|
|
|
void ws2812_setleds_rgbw(LED_TYPE *ledarray, uint16_t number_of_leds) {
|
|
|
|
}
|