main.cpp

#ifdef LX16A_ARDUINO
#include <Arduino.h>
#else
#include <freertos/FreeRTOS.h>
#include <freertos/task.h>
static void delay(int ms) { vTaskDelay(pdMS_TO_TICKS(ms)); }
static uint32_t millis() { return xTaskGetTickCount(); }
#endif

#include <SmartLeds.h>

const int LED_COUNT = 15;
const int DATA_PIN = 22;
const int CHANNEL = 0;

// SmartLed -> RMT driver (WS2812/WS2812B/SK6812/WS2813)
SmartLed leds(LED_WS2812B, LED_COUNT, DATA_PIN, CHANNEL, DoubleBuffer);

const int CLK_PIN = 23;
// APA102 -> SPI driver
//Apa102 leds(LED_COUNT, CLK_PIN, DATA_PIN, DoubleBuffer);

void setup() {}

uint8_t hue;
void showGradient() {
    hue++;
    // Use HSV to create nice gradient
    for (int i = 0; i != LED_COUNT; i++)
        leds[i] = Hsv { static_cast<uint8_t>(hue + 30 * i), 255, 255 };
    leds.show();
    // Show is asynchronous; if we need to wait for the end of transmission,
    // we can use leds.wait(); however we use double buffered mode, so we
    // can start drawing right after showing.
}

void showRgb() {
    leds[0] = Rgb { 255, 0, 0 };
    leds[1] = Rgb { 0, 255, 0 };
    leds[2] = Rgb { 0, 0, 255 };
    leds[3] = Rgb { 0, 0, 0 };
    leds[4] = Rgb { 255, 255, 255 };
    leds.show();
}

void loop() {
    if (millis() % 10000 < 5000)
        showGradient();
    else
        showRgb();
    delay(50);
}

#ifndef ARDUINO
extern "C" void app_main() {
    setup();
    while (true) {
        loop();
        vTaskDelay(0);
    }
}
#endif