// Using RMT driver
// #include "driver/rmt.h"
// #include "esp32-hal-log.h"

// #define LED_PIN         GPIO_NUM_6
// #define RMT_CHANNEL     RMT_CHANNEL_0

// Using FastLED library
// #include <FastLED.h>
// #define LED_PIN     D6
// #define NUM_LEDS    1
// #define BRIGHTNESS  64
// #define LED_TYPE    WS2812B
// #define COLOR_ORDER GRB
// CRGB leds[NUM_LEDS];

// Neopixel Library
#include <Adafruit_NeoPixel.h>
#define PIN_NEO_PIXEL   D0  // The ESP32 pin GPIO16 connected to NeoPixel
#define NUM_PIXELS      3  // The number of LEDs (pixels) on NeoPixel

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

// Function to initialize RMT
// void setupRMT() {
//   gpio_num_t LED_PIN = (gpio_num_t)6;
//   rmt_config_t config;
//   config.rmt_mode = RMT_MODE_TX;
//   config.channel = RMT_CHANNEL;
//   config.gpio_num = LED_PIN;
//   config.mem_block_num = 1;
//   config.tx_config.loop_en = false;
//   config.tx_config.carrier_en = false;
//   config.clk_div = 2; // Clock divider for timing

//   rmt_config(&config);
//   rmt_driver_install(config.channel, 0, 0);
// }

// Function to create WS2812 signal
// void sendWS2812Data(uint8_t *data, size_t len) {
//   rmt_item32_t items[len * 24];
//   for (size_t i = 0; i < len; i++) {
//     for (size_t j = 0; j < 8; j++) {
//       uint8_t bit = (data[i] >> (7 - j)) & 1;
//       if (bit) {
//         // Logic 1
//         items[i * 24 + j].level0 = 1;
//         items[i * 24 + j].duration0 = 8;
//         items[i * 24 + j].level1 = 0;
//         items[i * 24 + j].duration1 = 4;
//       } else {
//         // Logic 0
//         items[i * 24 + j].level0 = 1;
//         items[i * 24 + j].duration0 = 4;
//         items[i * 24 + j].level1 = 0;
//         items[i * 24 + j].duration1 = 8;
//       }
//     }
//   }
//   rmt_write_items(RMT_CHANNEL, items, len * 24, true);
//   rmt_wait_tx_done(RMT_CHANNEL, portMAX_DELAY);
// }

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

  // Setup with RMT driver
  // setupRMT();
  // uint8_t color[] = {0xFF, 0xFF, 0xFF}; // White color
  // sendWS2812Data(color, sizeof(color));

  // Setup Neopixel
  NeoPixel.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
  // Test pixels
  for(int i=0; i<NUM_PIXELS; i++){
    NeoPixel.setPixelColor(i, NeoPixel.Color(255, 255, 255));
    delay(1000);
  }
  NeoPixel.setBrightness(200); // a value from 0 to 255
  NeoPixel.show();  // update to the NeoPixel Led Strip
  delay(500);      // 2 seconds off time

  // Setup FastLED
  // FastLED.addLeds<LED_TYPE, LED_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
  // FastLED.setBrightness(BRIGHTNESS);
}

void loop() {
  // Code for RMT driver
  // We try to control this one with raw RMT signal generation
  // uint8_t color[] = {0xFF, 0xFF, 0xFF};
  // color[0] = 0xFF; // Red color
  // color[1] = 0x00; // Red color
  // color[2] = 0x00; // Red color
  // sendWS2812Data(color, sizeof(color));
  // color[0] = 0x00; // Green color
  // color[1] = 0xFF; // Green color
  // color[2] = 0x00; // Green color
  // sendWS2812Data(color, sizeof(color));
  // color[0] = 0x00; // Blue color
  // color[1] = 0x00; // Blue color
  // color[2] = 0xFF; // Blue color
  // sendWS2812Data(color, sizeof(color));

  // Loop for NeoPixel
  // NeoPixel.clear();  // set all pixel colors to 'off'. It only takes effect if pixels.show() is called
  // NeoPixel.show();
  // delay(500);
  for(int i=0; i<NUM_PIXELS; i++){
    Serial.printf("Red %d\n", i);
    NeoPixel.setPixelColor(i, NeoPixel.Color(255, 0, 0));
    NeoPixel.show();
    delay(500);
    Serial.printf("Green %d\n", i);
    NeoPixel.setPixelColor(i, NeoPixel.Color(0, 255, 0));
    NeoPixel.show();
    delay(500);
    Serial.printf("Blue %d\n", i);
    NeoPixel.setPixelColor(i, NeoPixel.Color(0, 0, 255));
    NeoPixel.show();
    delay(500);
    NeoPixel.clear();
    NeoPixel.show();
  }
  
  // Code for Fast LED
  // fill_solid(leds, NUM_LEDS, CRGB::Red); // Set all LEDs to red
  // FastLED.show();
  // delay(1000);
  // fill_solid(leds, NUM_LEDS, CRGB::Green); // Set all LEDs to green
  // FastLED.show();
  // delay(1000);
  // fill_solid(leds, NUM_LEDS, CRGB::Blue); // Set all LEDs to blue
  // FastLED.show();
  // delay(1000);
  // fill_rainbow(leds, NUM_LEDS, 0, 7); // Create a rainbow effect
  // FastLED.show();
  // delay(1000);
}