de7cac11ae
* improve neopixel definition for all boards * Improve NeoPixel definition for all boards * neopixelWrite uses Peirpheral Manager now The function can now be used for many GPIOs in the same sketch by using Peripheral Manager attach/detach, not being necesary to worry about initialization. * improve error message * check if pin is RGB_BUILTIN * fixes boards that don't RGB_BUILTIN
37 lines
1.1 KiB
C
37 lines
1.1 KiB
C
#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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// Verify if the pin used is RGB_BUILTIN and fix GPIO number
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#ifdef RGB_BUILTIN
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pin = pin == RGB_BUILTIN ? pin - SOC_GPIO_PIN_COUNT : pin;
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#endif
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if (!rmtInit(pin, RMT_TX_MODE, RMT_MEM_NUM_BLOCKS_1, 10000000)) {
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log_e("RGB LED driver initialization failed for GPIO%d!", pin);
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return;
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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(pin, led_data, RMT_SYMBOLS_OF(led_data), RMT_WAIT_FOR_EVER);
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}
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