#define LED_PIN 25      // Define onboard LED pin
#define BUTTON_PIN 2    // Define button GPIO pin

bool reverse_mode = false; // Toggle for reverse mode

void blink_led(int blinks, int duration_ms) {
    int interval = duration_ms / (2 * blinks); // Calculate time for each ON/OFF
    for (int i = 0; i < blinks; i++) {
        digitalWrite(LED_PIN, HIGH);  // Turn LED on
        delay(interval);
        digitalWrite(LED_PIN, LOW);   // Turn LED off
        delay(interval);
    }
}

void setup() {
    pinMode(LED_PIN, OUTPUT);  // Set LED_PIN as output
    pinMode(BUTTON_PIN, INPUT_PULLUP); // Set BUTTON_PIN as input with pull-up resistor
}

void loop() {
    // Check if button is pressed (active LOW)
    if (digitalRead(BUTTON_PIN) == LOW) {
        reverse_mode = !reverse_mode;  // Toggle mode
        delay(300);  // Debounce delay
    }

    if (!reverse_mode) {
        // Normal sequence
        blink_led(10, 60000);  // Blink 10 times in the first minute
        blink_led(20, 60000);  // Blink 20 times in the second minute
        blink_led(30, 60000);  // Blink 30 times in the third minute
    } else {
        // Reverse sequence
        blink_led(30, 60000);  // Blink 30 times in the first minute
        blink_led(20, 60000);  // Blink 20 times in the second minute
        blink_led(10, 60000);  // Blink 10 times in the third minute
    }
}