ESP32_OSC_IMU/lib/M5Stack/examples/Unit/CATEAR_SK6812/CATEAR_SK6812.ino

/*
    Description: Control CAT EAR to run rainbow light show
    Please install library before compiling:  
    FastLED: https://github.com/FastLED/FastLED
*/
#include <M5Stack.h>
#include "FastLED.h"

#define Neopixel_PIN    21
#define NUM_LEDS    118

CRGB leds[NUM_LEDS];
uint8_t gHue = 0;
static TaskHandle_t FastLEDshowTaskHandle = 0;
static TaskHandle_t userTaskHandle = 0;
void setup() {
  M5.begin();
  M5.Power.begin();

  M5.Lcd.clear(BLACK);
  M5.Lcd.setTextColor(YELLOW); M5.Lcd.setTextSize(2); M5.Lcd.setCursor(60, 160);
  M5.Lcd.println("CatEar Example");
  M5.Lcd.setTextColor(WHITE);
  // Neopixel initialization
  FastLED.addLeds<WS2811,Neopixel_PIN,GRB>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  FastLED.setBrightness(10);
  xTaskCreatePinnedToCore(FastLEDshowTask, "FastLEDshowTask", 2048, NULL, 2, NULL, 1);
}

void loop()
{

}

void FastLEDshowESP32()
{
    if (userTaskHandle == 0) {
        userTaskHandle = xTaskGetCurrentTaskHandle();
        xTaskNotifyGive(FastLEDshowTaskHandle);
        const TickType_t xMaxBlockTime = pdMS_TO_TICKS( 200 );
        ulTaskNotifyTake(pdTRUE, xMaxBlockTime);
        userTaskHandle = 0;
    }
}

void FastLEDshowTask(void *pvParameters)
{
    for(;;) {
        fill_rainbow(leds, NUM_LEDS, gHue, 7);// rainbow effect
        FastLED.show();// must be executed for neopixel becoming effective
        EVERY_N_MILLISECONDS( 20 ) { gHue++; }
    }
}