#include <Adafruit_NeoPixel.h>

// NeoPixel configuration for Seeed XIAO RP2040
#define NEOPIXEL_PIN D10      // Built-in NeoPixel is on D10
#define NUM_PIXELS 5         // XIAO has 1 built-in NeoPixel

// Create NeoPixel object
Adafruit_NeoPixel pixel(NUM_PIXELS, NEOPIXEL_PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  // Initialize serial communication
  Serial.begin(9600);
  
  // Initialize NeoPixel
  pixel.begin();
  pixel.setBrightness(50);   // Set brightness to 50 (0-255) to save eyes
  pixel.show();              // Initialize all pixels to off
}

void loop() {
  // Read analog input on A1
  int sensorValue = analogRead(A1);
  
  // Map 0-1023 to 0-10 range
  int val = map(sensorValue, 0, 1023, 0, 10);
  
  // Print to serial monitor
  Serial.print("Sensor: ");
  Serial.print(sensorValue);
  Serial.print(" | Mapped: ");
  Serial.print(val);
  Serial.print(" | Color: ");

  // Set NeoPixel color based on mapped value
  setNeoPixelColor(val);
  
  delay(50);  // Small delay for stability
}

// Function to set NeoPixel color based on mapped value (0-10)
void setNeoPixelColor(int value) {
  uint32_t color;
  
  switch(value) {
    case 0:
      color = pixel.Color(255, 0, 0);     // Red
      Serial.println("RED");
      break;
    case 1:
      color = pixel.Color(255, 50, 0);    // Orange-red
      Serial.println("ORANGE-RED");
      break;
    case 2:
      color = pixel.Color(255, 100, 0);   // Orange
      Serial.println("ORANGE");
      break;
    case 3:
      color = pixel.Color(255, 150, 0);   // Yellow-orange
      Serial.println("YELLOW-ORANGE");
      break;
    case 4:
      color = pixel.Color(255, 200, 0);   // Yellow
      Serial.println("YELLOW");
      break;
    case 5:
      color = pixel.Color(0, 255, 0);     // Green
      Serial.println("GREEN");
      break;
    case 6:
      color = pixel.Color(0, 255, 100);   // Light green
      Serial.println("LIGHT GREEN");
      break;
    case 7:
      color = pixel.Color(0, 200, 255);   // Cyan
      Serial.println("CYAN");
      break;
    case 8:
      color = pixel.Color(0, 100, 255);   // Light blue
      Serial.println("LIGHT BLUE");
      break;
    case 9:
      color = pixel.Color(0, 0, 255);     // Blue
      Serial.println("BLUE");
      break;
    case 10:
      color = pixel.Color(255, 0, 255);   // Purple
      Serial.println("PURPLE");
      break;
    default:
      color = pixel.Color(0, 0, 0);       // Off
      Serial.println("OFF");
      break;
  }
  
  // Set the pixel color
  for(uint16_t i=0; i<NUM_PIXELS; i++) {
    pixel.setPixelColor(i, color);
    pixel.show();
  }  // Update the LED
}