main.cpp

00001 
00002 
00003 // modified 4-march-2016 by Pedro
00004 /*
00005  * The simplest program, read an input on pin PB_4
00006  */
00007  
00008 #include "mbed.h"
00009 #include "Hotboards_switches.h"
00010 
00011 // Creates a single sw object, this interrupt will give us a LOW(0) value when close
00012 // because our dip switch works with pull-ups
00013 Hotboards_switches sw( PB_4 );
00014 // If your dip switch will gave you a HIGH(1) value when close, then we need to create
00015 // the sw object with an extra parameter: Hotboards_switches sw( PB_4 , 1 );
00016 // In any case the function will return a HIGH(1) value any time the sw is closed
00017 
00018 //For this example we will use the USB serial port, here we initialize it
00019 Serial pc(USBTX,USBRX);
00020 
00021 int main()
00022 {
00023     while(1)
00024     {
00025         // When the interrupt is close (or ON) the function will return a true value
00026         // it doesn´t matter if our input is configured with pull-ups(LOW) or
00027         // pull-downs(HIGH)
00028         if( sw.read() )
00029         {
00030             pc.printf( "sw = close (on)\n\r" );
00031         }
00032         else
00033         {
00034             pc.printf( "sw = open (off)\n\r" );
00035         }
00036         // Wait 1 second, just to not query so often
00037         wait( 1 );
00038     }
00039 }