Gert Jan Schoneveld / Mbed 2 deprecated SaveKeypad

Tests forked Keypad library.

Dependencies:   FPointer keypad mbed

Schematic:

http://schind.nl/keypad.png

No extra hardware is needed besides the wires and switches. The columns are outputs configured with open drain. The rows are inputs configured with pull up resistors. A key press pulls down its row. With scanning the column is determined thereafter.

See keypad for the forked library used in this project.

Diff: main.cpp

Revision:
4:16191e501b63
Parent:
3:fb173f712440
--- a/main.cpp	Sun Nov 04 09:50:00 2012 +0000
+++ b/main.cpp	Sun Nov 04 09:56:51 2012 +0000
@@ -65,7 +65,7 @@
 // poll multiple mode
     keypad.Start();
     while (1) {
-        key = keypad.DebouncedScanMultiple();
+        int key = keypad.DebouncedScanMultiple();
         if (key > 0)
             cbAfterMultipleInput(key);
         wait(0.1);