CODEWITHSUNDEEP
arduino
PYB
PYB

Reputation: 533

Assistance needed - How to exit a for loop inside an if statement?

I am trying to run a for loop inside an if statement but it keeps repeating. I basically want pin 4 to blink 6 times when I press a button on pin 2. When z becomes a 6 in the for loop, the if statement makes it so that z is reset to 0 and the for loop restart all over again. Therefore the LED on pin 4 keeps blinking on and on. Anyone can help so that it blinks only 6 times? Here is the code:

int switchState = 0;

void setup() 
{
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(2, INPUT);

}

void loop() 
{
  switchState = digitalRead(2);
  if (switchState == LOW)
  {
    digitalWrite(5, LOW);
    digitalWrite(4, LOW);
  }
  else
  {
    digitalWrite(5, HIGH);
    for (int z=0; z<6; z++)
    {
      digitalWrite(4, HIGH);
      delay(100);
      digitalWrite(4, LOW);
      delay(100);
    }
  }

}

Upvotes: 1

Views: 102

Answers (1)

Arton Dorneles
Arton Dorneles

Reputation: 1709

Try out this:

void setup() 
{
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(2, INPUT);
}

void loop() 
{

  //Deactivate all leds
  digitalWrite(5, LOW);
  digitalWrite(4, LOW);

  if (digitalRead(2) == HIGH) { //If the button is pressed... 
    digitalWrite(5, HIGH);

    //blink
    for (int z=0; z<6; z++)
    {
       digitalWrite(4, HIGH);
       delay(100);
       digitalWrite(4, LOW);
       delay(100);
    }

    while (digitalRead(2) == HIGH) { // Wait until release the button
       delay(10); 
    }

  }

}

Upvotes: 3

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