Easy and Small Toggle Switch with Simple Pushbutton

Projects Programming
1

This is what I believe to be the easiest way of making an idiot-proof toggle switch with a push button. Take a look!

byte ledPin = 2;
byte buttonPin = 3;
bool buttonState;
bool lastButtonState = false;
void setup() {
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin,INPUT);
}
void loop() {
  byte buttonPinRead = digitalRead(buttonPin);
  if((buttonPinRead == HIGH) && (lastButtonState == false)){
    buttonState = !buttonState;
    lastButtonState = true;
  }
  if(buttonPinRead == LOW){
    lastButtonState = false;
  }
  if(buttonState == true){
    digitalWrite(ledPin, HIGH);
  }
  else{
    digitalWrite(ledPin, LOW);
  }
}
2

Do you have a question? If not, why post this here?

Why do you think it is "the easiest way"?
Why do you think it is "idiot-proof"?
Do you know what de-bouncing is?
Do you know what a pullup resistor is for?
When is your assignment due?

Pete

3

Too wordy for me
Try this

const byte ledPin = 2;
const byte buttonPin = 3;
byte currentButtonState;
byte previousButtonState;

void setup()
{
  pinMode(ledPin, OUTPUT);
  pinMode(buttonPin, INPUT_PULLUP);
}
void loop()
{
  previousButtonState = currentButtonState;
  currentButtonState = digitalRead(buttonPin);
  if (currentButtonState != previousButtonState && currentButtonState == LOW)
  {
    digitalWrite(ledPin, !digitalRead(ledPin));
  }
}

I don't claim that it is easy or idiot proof but at least it uses consistent data type

Of course, it really needs debouncing too