48 lines
1.2 KiB
C
48 lines
1.2 KiB
C
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#include "esp32-hal-rgb-led.h"
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void neopixelWrite(uint8_t pin, uint8_t red_val, uint8_t green_val, uint8_t blue_val){
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rmt_data_t led_data[24];
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static rmt_obj_t* rmt_send = NULL;
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static bool initialized = false;
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uint8_t _pin = pin;
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#ifdef RGB_BUILTIN
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if(pin == RGB_BUILTIN){
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_pin = RGB_BUILTIN-SOC_GPIO_PIN_COUNT;
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}
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#endif
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if(!initialized){
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if((rmt_send = rmtInit(_pin, RMT_TX_MODE, RMT_MEM_64)) == NULL){
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log_e("RGB LED driver initialization failed!");
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rmt_send = NULL;
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return;
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}
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rmtSetTick(rmt_send, 100);
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initialized = true;
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}
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int color[] = {green_val, red_val, blue_val}; // Color coding is in order GREEN, RED, BLUE
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int i = 0;
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for(int col=0; col<3; col++ ){
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for(int bit=0; bit<8; bit++){
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if((color[col] & (1<<(7-bit)))){
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// HIGH bit
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led_data[i].level0 = 1; // T1H
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led_data[i].duration0 = 8; // 0.8us
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led_data[i].level1 = 0; // T1L
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led_data[i].duration1 = 4; // 0.4us
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}else{
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// LOW bit
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led_data[i].level0 = 1; // T0H
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led_data[i].duration0 = 4; // 0.4us
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led_data[i].level1 = 0; // T0L
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led_data[i].duration1 = 8; // 0.8us
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}
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i++;
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}
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}
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rmtWrite(rmt_send, led_data, 24);
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}
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