main.cpp

00001 
00002 /*
00003  * Turn ON a led on pin PA_5 (LED1) if the button on pin PB_4 is pressed, then
00004  * turn it OFF if the button on pin PB_10 is pressed
00005  */
00006  
00007 #include "mbed.h"
00008 #include "Hotboards_buttons.h"
00009 
00010 //Creates two single button objects, when the button is pressed it gives you
00011 //a LOW(0) value because it works with pull-ups.
00012 Hotboards_buttons btn1( PB_4 );
00013 Hotboards_buttons btn2( PB_10 );
00014 //If your buttons gives you a HIGH(1) value when is pressed, then we need
00015 //to create the button object with and extra parameter:
00016 //Hotboards_buttons btn( PB_4 , 1 ); in any case the functions will return
00017 //a HIGH(1) value any time the button is pressed
00018 
00019 //To our example we will use the led on the nucleo board
00020 DigitalOut nucleoLed( LED1 );
00021 
00022 int main()
00023 {
00024     while(1)
00025     {
00026         //The moment when the button is released the function will return a HIGH(1)
00027         //value, it doesn`t matter if your button is configured with pull-ups(LOW)
00028         //or pull-downs(HIGH)
00029         
00030         //Turn ON the led on the nucleo board when button 1 is pressed
00031         if( btn1.isPressed( ) )
00032         {
00033             nucleoLed = 1;
00034         }
00035         
00036         //Turn OFF the led on the nucleo board when button 2 is presed
00037         if( btn2.isPressed( ) )
00038         {
00039             nucleoLed = 0;
00040         }
00041     }
00042 }