Light a LED on a press button

Complete program recommended

This program is completely under interruption, and releases loop which can be used to do something else.

// The program will turn on the LED_BUILTIN led when pressing a button.

#include <MTobjects.h> // V1.0.6 See http://arduino.dansetrad.fr/en/MTobjects

const uint8_t PIN_BUTTON = A0; // Button wired between A0 and GND


void light(void) // Called when you just press the button
{
  digitalWrite(LED_BUILTIN, HIGH); // Light the LED
}

void turnOff(void) // Called when you have just released the button
{
  digitalWrite(LED_BUILTIN, LOW); // Turn off the LED
}

MTbutton Bouton(PIN_BUTTON, light, turnOff); // Implementation of the button



void setup()
{
  pinMode(LED_BUILTIN, OUTPUT); // LED initialization
}

void loop(){}

Complete program possible

It is a more traditional method but you should not block loop otherwise the button has no more effect.

// The program will turn on the LED_BUILTIN led when pressing a button. 

#include <MTobjects.h> // V1.0.6 See http://arduino.dansetrad.fr/en/MTobjects 

const uint8_t PIN_BUTTON = A0; // Button wired between A0 and GND 

MTbutton Bouton(PIN_BUTTON); // Implementation of the button 



void setup()
{
  pinMode(LED_BUILTIN, OUTPUT); // LED initialization 
}

void loop()
{
  digitalWrite(LED_BUILTIN, Bouton.getSelect()); // Copies the state of the button to the LED 
  // digitalWrite(LED_BUILTIN, Bouton.getSelect()? HIGH : LOW) ; // More correct! 
}