// https://forum.arduino.cc/t/extension-of-the-program-with-additional-2-parameters-does-not-work/1049873/8

int pressureMeasurement;

void setup ()
{
  Serial.begin (9600); // speed of the COM port to read
  pinMode (7, OUTPUT); // pin indication for relay 1 at cylinder 1
  pinMode (8, OUTPUT); // pin indication for relay 2 at cylinder 2
  digitalWrite (7, LOW); // turn off 1 relay at cylinder 1
  digitalWrite (8, LOW); // turn off relay 2 at cylinder 2
}

void loop () {
  static unsigned int loopCounter;

  delay (333); // slow this down crudely
  
  pressureMeasurement = analogRead (A0); // indication of the pin reading the data from the pressure sensor

  Serial.println();
  Serial.print(loopCounter); loopCounter++;
  Serial.print(" pressure = "); // string for the port monitor
  Serial.println(pressureMeasurement);

  if (pressureMeasurement> 128) {// what measurement should the reaction take place at? 1024 is 5volt 240 = 1.17v 230 = 1.12v 225 = 1.1v 184 = 0.9v 143 = 0.7v

    Serial.println ("block 1");
    digitalWrite (7, HIGH); // turn on the relay at cylinder 1
    digitalWrite (8, HIGH); // turn on the relay at cylinder 2
    delay (200); // the relay is turned on for 0.2 seconds
    digitalWrite (8, LOW); // turn off the relay for 2 cylinders
    delay (2000); // time when the relay for 2 cylinders is turned off

    if (pressureMeasurement > 256) {// what measurement should the reaction take place at?

      Serial.println ("block   2");
      digitalWrite (7, HIGH); // turn on the relay at cylinder 1
      digitalWrite (8, HIGH); // turn on the relay at cylinder 2
      delay (400); // the relay is turned on for 0.4 seconds
      digitalWrite (8, LOW); // turn off the relay for 2 cylinders
      delay (2000); // time when the relay for 2 cylinders is turned off

      if (pressureMeasurement > 768) {// at what measurement is to be reacted?

        Serial.println ("block     3");
        digitalWrite (7, HIGH); // turn on the relay at cylinder 1
        digitalWrite (8, HIGH); // turn on the relay at cylinder 2

      }
    }
    else {

      Serial.println ("block X, analog below 128.");
      digitalWrite (7, LOW); // turn off the relay at cylinder 1
      delay (100); // delay for switching off the relay no.2
      digitalWrite (8, LOW); // turn off the relay at cylinder 2
    }
    delay (100); // every how many seconds should the sensor read?
  }
}