The simplest program, read a single button on pin PB_4

Dependencies:   Hotboards_buttons mbed

Files at this revision

API Documentation at this revision

Comitter:
Hotboards
Date:
Thu Mar 03 19:50:53 2016 +0000
Commit message:
first release

Changed in this revision

Hotboards_buttons.lib Show annotated file Show diff for this revision Revisions of this file
main.cpp Show annotated file Show diff for this revision Revisions of this file
mbed.bld Show annotated file Show diff for this revision Revisions of this file
diff -r 000000000000 -r 61fb1e77eaee Hotboards_buttons.lib
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Hotboards_buttons.lib	Thu Mar 03 19:50:53 2016 +0000
@@ -0,0 +1,1 @@
+https://developer.mbed.org/users/Hotboards/code/Hotboards_buttons/#810519ce94bf
diff -r 000000000000 -r 61fb1e77eaee main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Thu Mar 03 19:50:53 2016 +0000
@@ -0,0 +1,41 @@
+
+/*
+ * 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 );
+    }
+}
+
diff -r 000000000000 -r 61fb1e77eaee mbed.bld
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Thu Mar 03 19:50:53 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/87f2f5183dfb
\ No newline at end of file