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author | Andrew Kannan <andrew.kannan@klaviyo.com> | 2019-01-29 23:04:20 -0500 |
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committer | Drashna Jaelre <drashna@live.com> | 2019-01-29 20:04:20 -0800 |
commit | 7186d1581abbd97d7c76626ae83fc866e85d217c (patch) | |
tree | 1a6cf65f38f00f48e1539a8c01418cf770119a37 /keyboards/cannonkeys/bluepill/ws2812.c | |
parent | 74fcfd533508d5743a20a7cd7faba404f8fc7cd3 (diff) | |
download | firmware-7186d1581abbd97d7c76626ae83fc866e85d217c.tar.gz firmware-7186d1581abbd97d7c76626ae83fc866e85d217c.tar.bz2 firmware-7186d1581abbd97d7c76626ae83fc866e85d217c.zip |
Moving cannonkeys boards to one place, eeprom fix (#4999)
* 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
Diffstat (limited to 'keyboards/cannonkeys/bluepill/ws2812.c')
-rw-r--r-- | keyboards/cannonkeys/bluepill/ws2812.c | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/keyboards/cannonkeys/bluepill/ws2812.c b/keyboards/cannonkeys/bluepill/ws2812.c new file mode 100644 index 000000000..7d0f909c0 --- /dev/null +++ b/keyboards/cannonkeys/bluepill/ws2812.c @@ -0,0 +1,132 @@ +/* + * 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) { + + } |