#include <Servo.h>
 
// Adjust these pins for your wiring on the Pico
const int LED_PIN   = 5;   // LED connected to GPIO13
const int SERVO_PIN = 16;  // Servo control signal on GPIO9
const int LDR_PIN   = 26;  // LDR on an ADC pin (GP26 is ADC0 on Pico)

// Threshold for deciding when it's "dark" (Arduino ADC 0..4096)
// ≈ 3125 (out of 4096)
const int THRESHOLD = 3125; // Starting value which is considered darkness

// Set up the LED (digital output) and LDR (analog input)
Servo myservo;

void setup() {
  pinMode(LED_PIN, OUTPUT);

  // RP2040 ADC is 12-bit; set resolution so analogRead returns 0..4096
  analogReadResolution(12);

  // Create the servo object
  myservo.attach(SERVO_PIN);

  // Move servo to main (0°) position
  myservo.write(0);

  // Optional short delay to let everything initialize
  delay(1000);

  // For debugging prints analogous to MicroPython's print()
  Serial.begin(115200);
}

void loop() {
  // Implement the code here:
  // Read the LDR sensor value (0 to 4096) and print it for debugging
  
  // Read the LDR value (0..4096)
  // If it is dark (val > THRESHOLD):
 
    // - Move the servo to 180 degrees
  
    // - Turn on the LED

    // - Wait for 3 seconds
  
    // Otherwise (if there is enough light):
    // - Move the servo to 0 degrees

    // - Turn off the LED



  // Add a small delay to stabilize readings
  delay(100);
}