/* Charliplexing 6 LEDs
--------------------------------------------------------------------------------
Row 1 (R1): Arduino Pin 13
Row 2 (R2): Arduino Pin 12
Row 3 (R3): Arduino Pin 11
--------------------------------------------------------------------------------
variable    pinMode      state
 L           OUTPUT       LOW 
 H           OUTPUT       HIGH
 Z           INPUT        LOW
---------------------------------------------------------------------------------
     R1 (Pin 13)      R2 (Pin 12)     R3 (Pin 11)
L1    L                 H                Z
L2    H                 L                Z
L3    Z                 L                H
L4    Z                 H                L
L5    L                 Z                H
L6    H                 Z                L 
-----------------------------------------------------------------------------------
LED    Cathode      Anode
1         R2          R1
2         R1          R2
3         R3          R2
4         R2          R3
5         R3          R1
6         R1          R3 
---------------------------------------------------------------------------------
*/
long lastTime = 0;
long minutes = 0;
long setminutes = 3;
const int LED_1 = 13;     //LED row 1
const int LED_2 = 12;     //LED row 2    
const int LED_3 = 11;     //LED row 3
const int SHORT_PRESS_TIME = 1000; // 1000 milliseconds
const int LONG_PRESS_TIME  = 3000; // 1000 milliseconds
const int BUTTON_PIN =4; //Ptn2 connecte to Button

const int LED_PIN= 6; //Pin3 connected to a LED

//int currentButtonState = 0;//HIGH / LOW
//int previousButtonState = 0;//HIGH / LOW
int setMode = 30;
int lastState = LOW;  // the previous state from the input pin
int currentState;     // the current reading from the input pin
unsigned long pressedTime  = 0;
unsigned long releasedTime = 0;
bool isPressing = false;
bool isLongDetected = false;


void setup() {
// run once
pinMode (BUTTON_PIN,INPUT);
pinMode (LED_PIN,OUTPUT);
digitalWrite(LED_PIN, HIGH);
Serial.begin(9600);
}
void loop() {

currentState = digitalRead(BUTTON_PIN);
  delay(30);
  if(lastState == HIGH && currentState == LOW) {        // button is pressed
    pressedTime = millis();
    isPressing = true;
    isLongDetected = false;
  } else if(lastState == LOW && currentState == HIGH) { // button is released
    isPressing = false;
    releasedTime = millis();

    long pressDuration = releasedTime - pressedTime;

    if( pressDuration > 50 && pressDuration < SHORT_PRESS_TIME )
      Serial.println("A short press is detected");
  }

  if(isPressing == true && isLongDetected == false) {
    long pressDuration = millis() - pressedTime;

    if( pressDuration > LONG_PRESS_TIME ) {
      Serial.println("A long press is detected");
      isLongDetected = true;
    }
  }



/*currentButtonState=digitalRead(BUTTON_PIN);
delay (50);

if(currentButtonState != previousButtonState) 
{
  if(currentButtonState ==HIGH) 
  {
   setMode = setMode+ 30;
   if (setMode>180)
   {
    setMode=30;
   }
   
  }
}
   Serial.print("Number of button pushes: ");
   Serial.println(setMode); 
  if(millis()-lastTime>300) //make this 60000 for one minute counting
  {
    minutes++;
    lastTime=millis();
   }
  if(minutes==setMode)
  {
   digitalWrite(LED_PIN, LOW);
   
   }
   Serial.println(minutes);
   //Serial.println(millis());
  
  */
  if(setMode ==30)
  {
  //turn on LED L1
  pinMode(LED_3, INPUT);      //row 3
  digitalWrite(LED_3, LOW);
  pinMode(LED_1, OUTPUT);     //row 1
  digitalWrite(LED_1, LOW);
  pinMode(LED_2, OUTPUT);     //row 2
  digitalWrite(LED_2, HIGH);  
  }
  else if (setMode==60)
  {
  //turn on LED L2
  pinMode(LED_3, INPUT);      //row 3
  digitalWrite(LED_3, LOW);
  pinMode(LED_1, OUTPUT);     //row 1
  digitalWrite(LED_1, HIGH);
  pinMode(LED_2, OUTPUT);     //row 2
  digitalWrite(LED_2, LOW);   
  }
  else if (setMode==90)
  {
  //turn on LED L3
  pinMode(LED_1, INPUT);      //row 1
  digitalWrite(LED_1, LOW);
  pinMode(LED_2, OUTPUT);     //row 2
  digitalWrite(LED_2, LOW);  
  pinMode(LED_3, OUTPUT);     //row 3
  digitalWrite(LED_3, HIGH);
  }
  else if (setMode==120)
  {
  //turn on LED L4
  pinMode(LED_1, INPUT);     //row 1
  digitalWrite(LED_1, LOW);
  pinMode(LED_2, OUTPUT);    //row 2
  digitalWrite(LED_2, HIGH);  
  pinMode(LED_3, OUTPUT);    //row 3
  digitalWrite(LED_3, LOW);
  }
  else if (setMode==150)
  {
  //turn on LED L5
  pinMode(LED_2, INPUT);     //row 2
  digitalWrite(LED_2, LOW);
  pinMode(LED_3, OUTPUT);    //row3
  digitalWrite(LED_3, HIGH);
  pinMode(LED_1, OUTPUT);    //row 1
  digitalWrite(LED_1, LOW);
  }
  else if (setMode==180)
  {
  //turn on LED L6
  pinMode(LED_2, INPUT);
  digitalWrite(LED_2, LOW);
  pinMode(LED_3, OUTPUT);
  digitalWrite(LED_3, LOW);
  pinMode(LED_1, OUTPUT);
  digitalWrite(LED_1, HIGH);
  }
   lastState = currentState;
//previousButtonState = currentButtonState;
}