// Just a simple slide-switch demo
int laststate1;
int currentstate1;

int laststate2;
int currentstate2;

int laststate3;
int currentstate3;

int laststate4;
int currentstate4;

float voltage1;
float pressure_sensor_1;

#define switch1 2
#define switch2 6
#define switch3 17
#define switch4 20 

#define IG1 3
#define IG2 4
#define IG3 5
#define IG4 14
#define IG5 15
#define IG6 16
#define IG7 8
#define spark 7
#define press_data 21


#define solenoid_v1 18
#define solenoid_v2 19
#define solenoid_v3 9

void setup() {

  pinMode(IG1, OUTPUT);
  pinMode(IG2, OUTPUT);
  pinMode(IG3, OUTPUT);
  pinMode(IG4, OUTPUT);
  pinMode(IG5, OUTPUT);
  pinMode(IG6, OUTPUT);
  pinMode(spark, OUTPUT);

  pinMode(solenoid_v1, OUTPUT);
  pinMode(solenoid_v2, OUTPUT);
  pinMode(solenoid_v3, OUTPUT);


  pinMode(switch1, INPUT_PULLUP);
  pinMode(switch2, INPUT_PULLUP);
  pinMode(switch3, INPUT_PULLUP);

  Serial.begin(9600);

}

void loop() {
  
  // switch 1 for solenoids 
  laststate1 = currentstate1;
  currentstate1 = digitalRead(switch1);

  if (currentstate1 == HIGH && laststate1 == LOW )
  { 
    loop1();

  }
  //-----------------
  
  // switch 2 for ignitors
  laststate2 = currentstate2;
  currentstate2 = digitalRead(switch2);

  if (currentstate2 == HIGH && laststate2 == LOW )
  { 

    loop2();

  }
  //-------------------

  laststate3 = currentstate3;
  currentstate3 = digitalRead(switch3);

  if (currentstate3 == HIGH && laststate3 == LOW )
  { 
    loop3();
  }
  //----------

  
  currentstate4= digitalRead(switch4);

  if (currentstate4 == HIGH )
  { 
    loop4();
  }
  
  
}

void loop1()
{  
  
    digitalWrite(solenoid_v1,HIGH);
    digitalWrite(solenoid_v2,HIGH);
    delay(500);
    digitalWrite(IG1,HIGH);
    digitalWrite(IG2,HIGH);
    digitalWrite(IG3,HIGH);


    digitalWrite(IG4, HIGH);
    digitalWrite(IG5, HIGH);
    digitalWrite(IG6, HIGH);
    delay(100);
    digitalWrite(IG4, LOW);
    digitalWrite(IG5, LOW);
    digitalWrite(IG6, LOW);
    delay(100);
    
    digitalWrite(IG4, HIGH);
    digitalWrite(IG5, HIGH);
    digitalWrite(IG6, HIGH);
    delay(100);
    digitalWrite(IG4, LOW);
    digitalWrite(IG5, LOW);
    digitalWrite(IG6, LOW);
    delay(100);
    
  
    delay(1);

    digitalWrite(IG1, LOW);
    digitalWrite(IG2, LOW);
    digitalWrite(IG3, LOW);
    delay(50);

    digitalWrite(solenoid_v1,LOW);
    digitalWrite(solenoid_v2,LOW);
    

}

void loop2()
{
  digitalWrite(spark,HIGH);
  delay(100);
  digitalWrite(spark,LOW);

}

void loop3()
{
  digitalWrite(solenoid_v3,HIGH);
  delay(100);//once the valve is turned on after how much time the injector should turn on
  digitalWrite(IG7,HIGH);
  delay(500);//on time of injector
  digitalWrite(IG7,LOW);
  delay(50);//once the injector is turned off after how much time the valve should turn off
  digitalWrite(solenoid_v3,LOW);

}

void loop4()
{
  //Analog data 
  pressure_sensor_1 = analogRead(A0);
  voltage1 = pressure_sensor_1 * (5.0 / 1023.0);

  int pressure1 = map(voltage1, 0, 1024, 0, 60);
  Serial.print(pressure1);
  Serial.println(" bar");
  delay(50);

}