/* 
Toggle LED’s state with the push button – first iteration

What we want to do is to toggle the LED’s state when you press + release the button. 
So, the first time you release the button, the LED will turn on. 
The second time, it will turn off. Etc.
*/

int LED_Pin = 8;                          //define pin 8 (digital pin)
int BUTTON_Pin = 2;                       //define pin 2 (digital pin)
int Current_Value = 1;                    //add additional variable
int Previous_Value = 1;                   //add additional variable
int LED_State = 0;                        //add additional variable


void setup() 
{ 
    Serial.begin(9600);                    //initialize serial communication
    pinMode(LED_Pin, OUTPUT);              //define LED_BUILTIN as output
    pinMode(BUTTON_Pin, INPUT_PULLUP);     //define pushbutton as input
}

void loop() 
{

  Current_Value = digitalRead(BUTTON_Pin);                  //Check ung state ni Push Button. Assign to Current Value

      if ((Current_Value == 0) && (Previous_Value == 1))    //Boolean "AND" Operation
        {
         LED_State = 1 - LED_State;                         //This will be performed if Boolean "AND" Operation is SATISFIED
        }

          if (LED_State == 1)                               //Check state of LED_State. Note: Diresto na dito if %% is NOT SATISFIED
            {
              digitalWrite(LED_Pin, 1);
            }

          else 
            {
              digitalWrite(LED_Pin, 0);
            }

  Previous_Value = Current_Value;                           //New value of "Previous_Value" will be the state of "Current_Value"

  Serial.print("Push Button Current Value: ");        // print a message to the serial monitor
  Serial.println(Current_Value);                      //print the value to the serial monitor
  Serial.print("Push Button Previous Value: ");       // print a message to the serial monitor
  Serial.println(Previous_Value);                     //print the value to the serial monitor
  Serial.print("LED State Value: ");                  // print a message to the serial monitor
  Serial.println(LED_State);                          //print the value to the serial monitor
  delay(800);

}