//pairs needed
int LEDPin = 13;
int ButtonPin = 2;

//vars needed 
int count = 0; // helping us count how many times you push the button 
bool toggle = 0;
int PrevState = 0; //needs to be updated each iteration
int CurState = 0; //needs to be updated each iteration

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

  //tell arduino what pins are being used and how (pinMode) and start serial monitor
  pinMode(LEDPin, OUTPUT); // set LEDPin to actuator
  pinMode(ButtonPin, INPUT_PULLUP); //set button to a sensor
  //BUT INPUT_PULLUP swithces button logic --> add 20 kohms to the circuit. Limits
  //Current; not too much power is being pulled
  //when the button is pressed ---> LOW
  //when not pressed ---> HIGHT

//Start Serial Monitor
Serial.begin(9600);

}

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

/*
//Part 1 --> button press
if(digitalRead(ButtonPin)==LOW){
  //if LOW --> Button Pressed ---> do stuff coded below
  count = count + 1; //increasing count by 1
  digitalWrite(LEDPin,HIGH);
  delay(100); //100 ms delay
}

else{
  //button not pressed --> HIGH
  digitalWrite(LEDPin, LOW); //Turn off LED
}

Serial.println(count);
*/

/*
//Part 2
if(digitalRead(ButtonPin)==LOW) {
  toggle = !toggle;
  //switch from 0 to 1 or vice-versa
  count = count + 1;
  delay(200);
}

else{
  //button not pressed --> High
}

if(toggle == 1) {
  digitalWrite(LEDPin, HIGH); //LED on
}

else{
  digitalWrite(LEDPin, LOW); //LED off
}

Serial.println(count);
*/

/*
//Part 3
CurState = digitalRead(ButtonPin);

if(CurState < PrevState) {
  toggle = !toggle;
  count = count + 1;
  delay(200);

}

else{
  //button not pressed
}


//now true toggle
if(toggle == 1){
  digitalWrite(LEDPin, HIGH); //LED on

}

else{
  digitalWrite(LEDPin, LOW); //LED off
}

Serial.println(count);
PrevState = CurState;
//overwriting previous state each time with our current state --> old state for next iteration
*/

}