Dimiter K
scan a 4x4 keypad by polling it continuously.
Dependents: Keyboard_LCD tarea6_teclado keypad
keypad.h@0:1fa357ea3fcc, 2010-11-06 (annotated)
- Committer:
- DimiterK
- Date:
- Sat Nov 06 14:36:22 2010 +0000
- Revision:
- 0:1fa357ea3fcc
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| DimiterK | 0:1fa357ea3fcc | 1 | /* Copyright (c) 2010 Dimiter Kentri |
| DimiterK | 0:1fa357ea3fcc | 2 | |
| DimiterK | 0:1fa357ea3fcc | 3 | Permission is hereby granted, free of charge, to any person obtaining a copy |
| DimiterK | 0:1fa357ea3fcc | 4 | of this software and associated documentation files (the "Software"), to deal |
| DimiterK | 0:1fa357ea3fcc | 5 | in the Software without restriction, including without limitation the rights |
| DimiterK | 0:1fa357ea3fcc | 6 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| DimiterK | 0:1fa357ea3fcc | 7 | copies of the Software, and to permit persons to whom the Software is |
| DimiterK | 0:1fa357ea3fcc | 8 | furnished to do so, subject to the following conditions: |
| DimiterK | 0:1fa357ea3fcc | 9 | |
| DimiterK | 0:1fa357ea3fcc | 10 | The above copyright notice and this permission notice shall be included in |
| DimiterK | 0:1fa357ea3fcc | 11 | all copies or substantial portions of the Software. |
| DimiterK | 0:1fa357ea3fcc | 12 | |
| DimiterK | 0:1fa357ea3fcc | 13 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| DimiterK | 0:1fa357ea3fcc | 14 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| DimiterK | 0:1fa357ea3fcc | 15 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| DimiterK | 0:1fa357ea3fcc | 16 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| DimiterK | 0:1fa357ea3fcc | 17 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| DimiterK | 0:1fa357ea3fcc | 18 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| DimiterK | 0:1fa357ea3fcc | 19 | THE SOFTWARE. |
| DimiterK | 0:1fa357ea3fcc | 20 | */ |
| DimiterK | 0:1fa357ea3fcc | 21 | |
| DimiterK | 0:1fa357ea3fcc | 22 | #ifndef KEYPAD_H |
| DimiterK | 0:1fa357ea3fcc | 23 | #define KEYPAD_H |
| DimiterK | 0:1fa357ea3fcc | 24 | |
| DimiterK | 0:1fa357ea3fcc | 25 | #include "DigitalIn.h" |
| DimiterK | 0:1fa357ea3fcc | 26 | #include "BusOut.h" |
| DimiterK | 0:1fa357ea3fcc | 27 | |
| DimiterK | 0:1fa357ea3fcc | 28 | |
| DimiterK | 0:1fa357ea3fcc | 29 | namespace mbed{ |
| DimiterK | 0:1fa357ea3fcc | 30 | |
| DimiterK | 0:1fa357ea3fcc | 31 | const char NO_KEY = '\0'; |
| DimiterK | 0:1fa357ea3fcc | 32 | #define KEY_RELEASED NO_KEY |
| DimiterK | 0:1fa357ea3fcc | 33 | |
| DimiterK | 0:1fa357ea3fcc | 34 | |
| DimiterK | 0:1fa357ea3fcc | 35 | |
| DimiterK | 0:1fa357ea3fcc | 36 | const int keys[16] = {'1','2','3','A', |
| DimiterK | 0:1fa357ea3fcc | 37 | '4','5','6','B', |
| DimiterK | 0:1fa357ea3fcc | 38 | '7','8','9','C', |
| DimiterK | 0:1fa357ea3fcc | 39 | '*','0','#','D'}; |
| DimiterK | 0:1fa357ea3fcc | 40 | |
| DimiterK | 0:1fa357ea3fcc | 41 | class Keypad{ |
| DimiterK | 0:1fa357ea3fcc | 42 | public: |
| DimiterK | 0:1fa357ea3fcc | 43 | Keypad(PinName col1, PinName col2, PinName col3, PinName col4, PinName row1,PinName row2, PinName row3, PinName row4); |
| DimiterK | 0:1fa357ea3fcc | 44 | int getKeyIndex(); |
| DimiterK | 0:1fa357ea3fcc | 45 | char getKey(); |
| DimiterK | 0:1fa357ea3fcc | 46 | |
| DimiterK | 0:1fa357ea3fcc | 47 | protected: |
| DimiterK | 0:1fa357ea3fcc | 48 | DigitalIn _col1,_col2,_col3,_col4; |
| DimiterK | 0:1fa357ea3fcc | 49 | BusOut _rows; |
| DimiterK | 0:1fa357ea3fcc | 50 | }; |
| DimiterK | 0:1fa357ea3fcc | 51 | |
| DimiterK | 0:1fa357ea3fcc | 52 | } |
| DimiterK | 0:1fa357ea3fcc | 53 | #endif |