button_click_options.ino

const int buttonPin = 2;
bool lastButtonState = false;
unsigned long pressStartTime = 0;
unsigned long lastReleaseTime = 0;

bool mode1 = false;
bool mode2 = false;

int option1 = 0;
int option2 = 0;

const unsigned long longPressThreshold = 3000;        // 3 seconds to enter Mode 1
const unsigned long veryLongPressThreshold = 5000;    // 5 seconds to exit Mode 1
const unsigned long doubleClickThreshold = 300;       // ms between double clicks

void setup() {
  pinMode(buttonPin, INPUT);
  Serial.begin(9600);
}

void loop() {
  bool reading = digitalRead(buttonPin);

  if (reading != lastButtonState) {
    if (reading == HIGH) {
      pressStartTime = millis();

      // Check for double click
      if ((millis() - lastReleaseTime) < doubleClickThreshold) {
        if (!mode1 && !mode2) {
          mode2 = true;
          Serial.println("Entered Mode 2");
        } else if (mode2) {
          mode2 = false;
          Serial.println("Exited Mode 2");
        }
      }

    } else {
      // Button released
      unsigned long pressDuration = millis() - pressStartTime;

      Serial.print("Press duration: ");
      Serial.println(pressDuration);

      // Exiting Mode 1
      if (mode1 && pressDuration >= veryLongPressThreshold) {
        mode1 = false;
        Serial.println("Exited Mode 1 (via long press)");
      }
      // Entering Mode 1
      else if (!mode1 && !mode2 && pressDuration >= longPressThreshold) {
        mode1 = true;
        Serial.println("Entered Mode 1");
      }
      // Normal click in Mode 1
      else if (mode1 && pressDuration < longPressThreshold) {
        option1 = (option1 + 1) % 5;
        Serial.print("Mode 1 Option: ");
        Serial.println(option1 + 1);
      }
      // Normal click in Mode 2
      else if (mode2 && pressDuration < longPressThreshold) {
        option2 = (option2 + 1) % 5;
        Serial.print("Mode 2 Option: ");
        Serial.println(option2 + 1);
      }

      lastReleaseTime = millis();
    }

    lastButtonState = reading;
  }
}