jim hamblen / Mbed 2 deprecated Pushbutton_NoBounce_Demo

Pushbutton counter demo with debounce

Dependencies:   mbed DebounceIn

Files at this revision

API Documentation at this revision

Revision 0:ca31694551ed, committed 2011-09-20

Comitter:
4180_1
Date:
Tue Sep 20 14:03:10 2011 +0000
Commit message:

Changed in this revision

DebounceIn.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 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DebounceIn.lib	Tue Sep 20 14:03:10 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/AjK/code/DebounceIn/#91a2e988ba9d

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Sep 20 14:03:10 2011 +0000
@@ -0,0 +1,35 @@
+#include "mbed.h"
+#include "DebounceIn.h"
+// must import Cookbook Debounce library into project
+// URL: http://mbed.org/users/AjK/libraries/DebounceIn/lky9pc
+
+DigitalOut myled(LED1);
+DigitalOut myled2(LED2);
+DigitalOut myled3(LED3);
+DigitalOut myled4(LED4);
+
+DebounceIn pb(p8);
+// SPST Pushbutton count demo using internal PullUp function
+// no external PullUp resistor needed
+// Pushbutton from P8 to GND.
+// Demonstrates need for debounce - will not count more than once per button hit
+// This ocuurs on all switches due to mechanical contact bounce
+int main()
+{ 
+int count=0;
+int old_pb=0;
+int new_pb;
+    // Use internal pullup for pushbutton
+    pb.mode(PullUp);
+    // Delay for initial pullup to take effect
+    wait(.001);
+    while(1) {
+        new_pb = pb;
+        if ((new_pb==0) && (old_pb==1)) count++;
+        myled4 = count & 0x01;
+        myled3 = (count & 0x02)>>1;
+        myled2 = (count & 0x04)>>2;
+        myled = (count & 0x08)>>3;
+        old_pb = new_pb;
+    }
+}
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue Sep 20 14:03:10 2011 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/63bcd7ba4912