Diff: main.cpp

Revision:

0:538950d8a034

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Feb 29 20:59:52 2016 +0000
@@ -0,0 +1,40 @@
+
+/*
+ * The simplest program, read a single button on pin PB_4
+ */
+ 
+#include "mbed.h"
+#include "Hotboards_buttons.h"
+
+//Creates a single button object, when the button is pressed it gives you
+//a LOW(0) value because it works with pull-ups.
+Hotboards_buttons btn( PB_4 );
+//If your buttons gives you a HIGH(1) value when is pressed, then we need
+//to create the button object with and extra parameter:
+//Hotboards_buttons btn( PB_4 , 1 ); in any case the functions will return
+//a HIGH(1) value any time the button is pressed
+
+//To our example we will use the led on the nucleo board
+DigitalOut nucleoLed( LED1 );
+
+int main()
+{
+    while(1)
+    {
+        //The moment when the button is pressed the function will return a HIGH(1)
+        //value, it doesn`t matter if your button is configured with pull-ups(LOW)
+        //or pull-downs(HIGH)
+        if( btn.status() )
+        {
+            //Button is pressed, led on the nucleo board is ON
+            nucleoLed = 1;
+        }
+        else
+        {
+            //Button is not pressed, led on the nucleo board is OFF
+            nucleoLed = 0;
+        }
+        //Just to poll not so often
+        wait_ms( 50 );
+    }
+}