Arduino Taste "speichern"

...
int toggle = LOW;  // variable for toggling between THROW and SECANT
...
...
int read_LCD_buttonsFunction()
{
  adc_key_in = analogRead(0);      // read the value from the sensor / KeypadShield
  // the values depends on KeypadShield, use
  if (adc_key_in > 1000) return btnNONE;
  if (adc_key_in < 50)   return btnRIGHT;
  if (adc_key_in < 150)  return btnUP;
  if (adc_key_in < 300)  return btnDOWN  ;
  if (adc_key_in < 500)  return btnLEFT;
  if (adc_key_in < 700)  return btnSELECT;
  return btnNONE;
}
...

/*******************************************************************************************/
/************************************** FUNCTION SETUP *************************************/
/*******************************************************************************************/
void setup() {
...
}
/*******************************************************************************************/
/**************************************** FUNCTION MAIN LOOP *******************************/
/*******************************************************************************************/
void loop() {
...

  lcd_key = read_LCD_buttonsFunction();

  switch (lcd_key)               // depending on which button was pushed, we perform an action
  {
    case btnSELECT:
      {
...
      }

    case btnLEFT:
      {
        if (toggle == HIGH) {
          toggle = LOW;
        }
        else {
          toggle = HIGH;
        }
        delay (300);
        break;
      }

    case  btnUP: {
...
      }
...

    default: {
...   
  }
...

        if (toggle == HIGH) {
...
        }
        else {
...
        }
}