Basic button example won't work

Fluxanode

Well-known member
Using Teensy 3.2

I am experimenting with the button press example in Arduino examples and for some reason as soon as i run the program the LED turns on and won't switch off. I wired a momentary switch as explained in the program text between pin 2 and 5v with a 10k pull down. The circuit works but the led won't turn off/on when the button is pressed.


Should this code work with the T3.2?
Is digital pin 2 the same as pin 2, the third pin down on the left on the 3.2? Maybe I am connected to the wrong pin???


HTML:
/*
  Button

  Turns on and off a light emitting diode(LED) connected to digital pin 13,
  when pressing a pushbutton attached to pin 2.

  The circuit:
  - LED attached from pin 13 to ground
  - pushbutton attached to pin 2 from +5V
  - 10K resistor attached to pin 2 from ground

  - Note: on most Arduinos there is already an LED on the board
    attached to pin 13.

  created 2005
  by DojoDave <http://www.0j0.org>
  modified 30 Aug 2011
  by Tom Igoe

  This example code is in the public domain.

  http://www.arduino.cc/en/Tutorial/Button
*/

// constants won't change. They're used here to set pin numbers:
const int buttonPin = 2;         // the number of the pushbutton pin
const int ledPin = LED_BUILTIN;  // the number of the LED pin
  // LED_BUILTIN is set to the correct LED pin independent of which board is used

// variables will change:
int buttonState = 0;         // variable for reading the pushbutton status

void setup() {
  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
}

void loop() {
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
  if (buttonState == HIGH) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
}
 
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