scan a 3x4 keypad with softaware pulldown resistors by polling it continuously.

Fork of keypad by Dimiter K

Revision:
1:b8305e120e11
Parent:
0:1fa357ea3fcc
diff -r 1fa357ea3fcc -r b8305e120e11 keypad.h
--- a/keypad.h	Sat Nov 06 14:36:22 2010 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,53 +0,0 @@
-/*	 Copyright (c) 2010 Dimiter Kentri
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
-*/
-
-#ifndef KEYPAD_H
-#define KEYPAD_H
-
-#include "DigitalIn.h"
-#include "BusOut.h"
-
-
-namespace mbed{
-
-const char NO_KEY = '\0';
-#define KEY_RELEASED NO_KEY
-          
-
-       
-const int keys[16] = {'1','2','3','A',
-                      '4','5','6','B',
-                      '7','8','9','C',
-                      '*','0','#','D'};
-                      
-class Keypad{    
-    public:
-        Keypad(PinName col1, PinName col2, PinName col3, PinName col4, PinName row1,PinName row2, PinName row3, PinName row4);
-        int getKeyIndex();
-        char getKey();
-
-    protected:
-        DigitalIn _col1,_col2,_col3,_col4;    
-        BusOut _rows;
-};
-
-}
-#endif