/*
  Forum: https://forum.arduino.cc/t/display-hinzufugen-status-an-oder-aus/1347226/1
  Wokwi: https://wokwi.com/projects/421173630153294849

*/


int LED_pin = 8; // built-in LED

int BUTTON_ON_pin = 7; // Pin 7
int BUTTON_OFF_pin = 4; // Pin 4

// Serial Tx: Pin 20
// Serial Rx: Pin 21

unsigned char command_on[] =  { 0x68, 0x40, 0xBF, 0x68, 0x04, 0x03, 0xD3, 0x3D, 0x3C, 0x22, 0x16 };
unsigned char command_off[] = { 0x68, 0x40, 0xBF, 0x68, 0x04, 0x03, 0xD3, 0x3D, 0x35, 0x1B, 0x16 };

void setup()
{
  Serial.begin(9600, SERIAL_8E1); // 9600 Baud Even Parity

  pinMode(LED_pin, OUTPUT);
  digitalWrite(LED_pin, LOW);  // LED off

  pinMode(BUTTON_ON_pin, INPUT_PULLUP);
  pinMode(BUTTON_OFF_pin, INPUT_PULLUP);
}

void loop()
{

  if (digitalRead(BUTTON_ON_pin) == LOW)
  {
    digitalWrite(LED_pin, HIGH);  // LED on

    Serial.write(command_on, sizeof(command_on));
    delay(1000); // 1000 ms (just for debounce and sending only once)

    digitalWrite(LED_pin, LOW);  // LED off
  }
  else if (digitalRead(BUTTON_OFF_pin) == LOW)
  {
    digitalWrite(LED_pin, HIGH);  // LED on

    Serial.write(command_off, sizeof(command_off));
    delay(1000); // 1000 ms (just for debounce and sending only once)

    digitalWrite(LED_pin, LOW);  // LED off
  }
}