#include <Adafruit_NeoPixel.h>

#define PIN_NEO_PIXEL  D0  // The ESP32 pin GPIO16 connected to NeoPixel
#define NUM_PIXELS     1  // The number of LEDs (pixels) on NeoPixel

Adafruit_NeoPixel NeoPixel(NUM_PIXELS, PIN_NEO_PIXEL, NEO_GRB + NEO_KHZ800);

void setup() {
  Serial.begin(115200);
  Serial.println("");
  Serial.println("Hello, XIAO ESP32-C3!");
  Serial.println("Welcome to Wokwi :-)");
  
  pinMode(D2, OUTPUT);
  pinMode(D3, OUTPUT);
  pinMode(D4, OUTPUT);

  pinMode(D7, OUTPUT);
  pinMode(D8, OUTPUT);
  pinMode(D9, OUTPUT);

  NeoPixel.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
  NeoPixel.setPixelColor(0, NeoPixel.Color(255, 255, 255));
  NeoPixel.setBrightness(200); // a value from 0 to 255
  NeoPixel.show();  // update to the NeoPixel Led Strip
  delay(500);      // 2 seconds off time
}

void loop() {
  NeoPixel.clear();  // set all pixel colors to 'off'. It only takes effect if pixels.show() is called
  NeoPixel.show();
  delay(500);
  
  Serial.println("Red");
  digitalWrite(D2, HIGH);
  digitalWrite(D7, HIGH);
  NeoPixel.setPixelColor(0, NeoPixel.Color(255, 0, 0));
  NeoPixel.show();
  delay(500);
  digitalWrite(D2, LOW);
  digitalWrite(D7, LOW);
  // NeoPixel.clear();
  // NeoPixel.show();

  Serial.println("Green");
  // digitalWrite(D3, HIGH);
  for (int i=0; i<=255; i++){
    analogWrite(D3, i);
    delay(10);
  }
  analogWrite(D3, 0);
  digitalWrite(D8, HIGH);
  NeoPixel.setPixelColor(0, NeoPixel.Color(0, 255, 0));
  NeoPixel.show();
  delay(500);
  // digitalWrite(D3, LOW);
  digitalWrite(D8, LOW);
  // NeoPixel.clear();
  // NeoPixel.show();

  Serial.println("Blue");
  digitalWrite(D4, HIGH);
  digitalWrite(D9, HIGH);
  NeoPixel.setPixelColor(0, NeoPixel.Color(0, 0, 255));
  NeoPixel.show();
  delay(500);
  digitalWrite(D4, LOW);
  digitalWrite(D9, LOW);
  // NeoPixel.clear();
  // NeoPixel.show();
}