#include <mechButton.h>

#define LED 3               // Pin # for LED.

mechButton  redBtn(2);      // Set up the button on pin 2
timeObj     LEDTimer(500);  // Timer for holding LED on.

void setup() {
  
  pinMode(LED,OUTPUT);              // Make LED pin output.
  digitalWrite(LED,LOW);            // Make sure the damn thing's off.
  redBtn.setCallback(btnClicked);   // Hookup the button's callback funtion.
}


// Button callback.
void btnClicked(void) {

  if (!redBtn.trueFalse()) {    // If the button was pressed..
    digitalWrite(LED,HIGH);     // Turn on the LED.
    LEDTimer.start();           // Start the timer.
  }
}


void loop() {

  idle();                     // Do magic..
  if (LEDTimer.ding()) {      // If the timer goes "ding", as timers do..
    digitalWrite(LED,LOW);    // Shut off the LED.
    LEDTimer.reset();         // Turn off the timer.
  }
}