/* Nirmal Bains 
  300379902 
  ENGR1190 MIDTERM
  February 14, 2024
  */



#include <Servo.h>

Servo myservo; // give servo a name

/*
attachInterrupt(digitalPinToInterrupt(abut))

void isr() interrupt service routinefunction 
{
  myservo.write(5);

  (turn off all LEDs) quick immediate type thing 
}
*/

void setup() {
  // put your setup code here, to run once:

// designate LED pins as OUTPUTS
pinMode(5, OUTPUT); // orange LED
pinMode(6, OUTPUT); // blue LED
pinMode(9, OUTPUT); // red LED
pinMode(10, OUTPUT); // green LED

// designate pushbutton pins as INPUTS
pinMode(2, INPUT); // red button
pinMode(12, INPUT); // green button 
pinMode(8, INPUT); // blue button
pinMode(7, INPUT); // orange button

// designate pin 11 as the servo PWM pin
myservo.attach(11);

// setup serial monitor to test the push buttons
Serial.begin(9600); 

randomSeed(analogRead(0)); // shuffles the random function 

}


// create a function that blinks LEDs 
void blink1(int pin) // int pin allows any LED to be used as input
{
  digitalWrite(pin, LOW); // turn on LED
  delay(150); // 150ms delay
  digitalWrite(pin, HIGH); // turn off LED
  delay(150); // 150ms delay
}

void alternate1() // state 1 for task 4
{
  myservo.write(30); // rotate servo to 30 degrees
  blink1(6); // blink blue LED twice using blink function
  blink1(6);

}

void alternate2() // state 2 for task 4
{
  myservo.write(90); // rotate servo to 90 degrees
  blink1(10); // blink green LED 3 times using blink function
  blink1(10);
  blink1(10);
}

void alternate3() // state 3 for task 4
{
  myservo.write(120); // rotate servo to 120 degrees
  for(int k = 1; k < 3; ++k) // create a loop so that it repeats twice
  {
    blink1(5); // blink orange LED
    blink1(9); // blink red LED 
  }

}

/*void servoRotate() // created new function for task 3
{
  int h = myservo.write(20); // wanted to assign servo position to a
  // variable to be able to increment but I'm not sure how.
  for(h = 20; h < 121; h++)
  {
   delay(8); 
  }
}
*/

void loop() {
  // put your main code here, to run repeatedly:

// start by turning off all the LEDs
digitalWrite(5, HIGH);
digitalWrite(6, HIGH);
digitalWrite(9, HIGH);
digitalWrite(10, HIGH);


/* Task 1: while red button is pressed each LED must blink twice in
the order: green, red, blue, orange. AND then in reverse sequence.*/

while(digitalRead(2)) // while red button (pin 2) is pressed
{
    blink1(10); // use the function I created earlier to blink LEDs
    blink1(10); // each one blinks twice and then in reverse order.
    blink1(9);
    blink1(9);
    blink1(6);
    blink1(6);
    blink1(5);
    blink1(5);
    blink1(5);
    blink1(5);
    blink1(6);
    blink1(6);
    blink1(9);
    blink1(9);
    blink1(10);
    blink1(10);
}

/* Task 2: continuously and randomely select LED and blink twice. */

while(digitalRead(12)) // while green button is pressed
{
  for(int i = 1; i < 10; i++) // repeat 10 times
  { 
    int randLED = random(5, 11); // select a random pin from 5-10
    blink1(randLED); // blink function blinks the randomely selected LED
    blink1(randLED);
  }

}

/* Task 3 : while blue button is pressed, incrementally rotate servo
between 20 and 120 degrees, stopping at every intermediate degree
position for 8ms. */

/* while(digitalRead(8)) //while blue button is pressed
{
  servoRotate(); 

}*/

/* task 4 : while orange button is pressed, alternate between:
-move servo to 30 degrees and blink blue LED twice (state1)
-move servo to 90 degrees and blink green LED 3 times (state2)
-move servo to 120 degrees and alternately blink orange and red LEDs
twice. (state3)
*/

while(digitalRead(7)) // while orange button is pressed
{
  alternate1(); // execute state 1
  alternate2(); // execute state 2
  alternate3(); // execute state 3
}


}