#include "Servo.h"

Servo gasservo; // create servo object to control a servo
Servo oilbypassservo; // create servo object to control a servo


// constants won't change. They're used here to
// set pin numbers:

int potPin = 0;	     		// Analog pin 0 connected to the potentiometer
int dieselpumptransistorPin = 3;		    // connected from digital pin 9 to the base of the transistor
int potValue = 0;			    // value returned from the potentiometer

const int switchthatstartsPin = 4;     // the number of the start button pin
const int keythatcontrollsallbuttonPin = 2;     // the number of the pushbutton pin
const int powerledpin =  12;	// the number of the LED pin
const int oilpumpledpin =  13;	// the number of the LED pin
const int propaneinjectionledpin =  11;	// the number of the LED pin
const int oilpumptransistorPin = 9;    // connected to the base of the transistor


// variables will change:

// switch is connected to pin 2
int buttonState = 0;	   // variable for reading the keybutton status
int inputVariable1 = 0;     // oil pump check
int inputVariable2 = 0;     // start up check
int inputVariable3 = 0;     // diesel check
int inputVariable4 = 0;     // diesel pump check
int val;				// variable for reading the pin status
int val2;			     // variable for reading the delayed/debounced status
int buttonState2 = 0;		    // variable to hold the button state
int lightMode = 0;		  // Is the light on or off?

void setup() {
  // Set the switch pin as input
  pinMode(switchthatstartsPin, INPUT);
  // initialize the LED pin as an output:
  pinMode(powerledpin, OUTPUT);
  pinMode(oilpumpledpin, OUTPUT);
  pinMode(propaneinjectionledpin, OUTPUT);
  // initialize the keybutton pin as an input:
  pinMode(keythatcontrollsallbuttonPin, INPUT);
  // attaches the servo on pin 3 to the servo object
  gasservo.attach(5);
  // attaches the servo on pin 5 to the servo object
  oilbypassservo.attach(6);
  // set  the transistor pin as output:
  pinMode(oilpumptransistorPin, OUTPUT);
  // set  the motor pin as an output
  pinMode(dieselpumptransistorPin, OUTPUT);
  // set up Serial library at 9600 bps
  Serial.begin(9600);

}

void loop()
{//0
  // read the state of the keybutton value:
  buttonState = digitalRead(keythatcontrollsallbuttonPin);
  // check if the keybutton is pressed.
  // if it is, the buttonState is HIGH:
  if (buttonState == HIGH)
{//1

  //---------------------------------
  //diesel pump pwm routine
  //---------------------------------
  //checks if oil pump is on
  if (inputVariable4 == 1)
{//
    // read the value from the sensor:
    potValue = analogRead(potPin) / 4;	  // read the potentiometer, convert it to between 0 - 255 for the value accepted by the digital pin.
    analogWrite(dieselpumptransistorPin, potValue); // potValue alters the supply from pin 9 which in turn controls the power running through the transistor
    //
    Serial.print("test2");
}//
    else
{//
}//

    //---------------------------------
    //start button check
    //---------------------------------
    // turn LED on:
    digitalWrite(powerledpin, HIGH);
     val = digitalRead(switchthatstartsPin);	// read input value and store it in val
     delay(10);				 // 10 milliseconds is a good amount of time
     val2 = digitalRead(switchthatstartsPin);     // read the input again to check for bounces
     if (val == val2) {	  //2	   // make sure we got 2 consistant readings!
	 if (val != buttonState2) { //3	   // the button state has changed!
	   if (val == LOW) {	  //4	  // check if the button is pressed
	     if (lightMode == 0) {    //5	// is the light off?
		 lightMode = 1;		   // turn light on!
	Serial.print("test");


  //---------------------------------
  //oil pump start cannot be removed
  //---------------------------------
  //checks if oil pump is on
  if (inputVariable1 == 0)
{//6
    //oil pump on
    digitalWrite(oilpumptransistorPin, HIGH);
    //turns this part off
    inputVariable1 = 1;
    delay(100);
    // turn LED on:
    digitalWrite(oilpumpledpin, HIGH);
    Serial.print("test2");
}//6
    else
{//7
}//7


  //---------------------------------
  //starting sequence
  //---------------------------------
  if (inputVariable2 == 0)
{//8
    //oil bypass open
    oilbypassservo.write(180);
    //gas valve open
    gasservo.write(180);
    // waits for the servo to get there
    delay(15);
    //gas valve open
    delay(1000);
    oilbypassservo.write(1);
    gasservo.write(25);
    // waits for the servo to get there
    delay(15);
    //turns this part off
    // turn LED on:
    digitalWrite(propaneinjectionledpin, HIGH);
    //turns this part off
    inputVariable2 = 1;
    delay(10);
    inputVariable4 = 1;
}//8
    else
{//9
}//9
} //5
     else
{//10
     lightMode = 0;		   // turn light off!
}//10
}//4
} //3
     buttonState2 = val;		     // save the new state in our variable
}//2
}//1
  //if key goes away
  else
{//11
  // turn LED off:
    digitalWrite(powerledpin, LOW);
  //---------------------------------
  //oil pump stop cannot be removed
  //---------------------------------
  //checks if oil pump is on
  if (inputVariable1 == 1)
{//13
    // turn LED off:
    digitalWrite(powerledpin, LOW);
    digitalWrite(oilpumpledpin, LOW);
    digitalWrite(propaneinjectionledpin, LOW);
    inputVariable2 = 0;     // zerro check
    inputVariable4 = 0;
    analogWrite(dieselpumptransistorPin, LOW);
    Serial.print("blank		 ");
    delay(10000);
    //oil pump on
    digitalWrite(oilpumptransistorPin, LOW);
    //turns this part off
    inputVariable1 = 0;
    Serial.print("test4");
}//13
    else
{//14
}//14
}//11
}//0