teclado lcd
Dependencies: TextLCD keypad mbed
keypad.h@0:9a67044d749e, 2017-02-25 (annotated)
- Committer:
- serbm
- Date:
- Sat Feb 25 14:21:11 2017 +0000
- Revision:
- 0:9a67044d749e
teclado con lcd
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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serbm | 0:9a67044d749e | 1 | /* mbed Keypad library, using user-defined interrupt callback |
serbm | 0:9a67044d749e | 2 | * Copyright (c) 2012 Yoong Hor Meng |
serbm | 0:9a67044d749e | 3 | * |
serbm | 0:9a67044d749e | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
serbm | 0:9a67044d749e | 5 | * of this software and associated documentation files (the "Software"), to deal |
serbm | 0:9a67044d749e | 6 | * in the Software without restriction, including without limitation the rights |
serbm | 0:9a67044d749e | 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
serbm | 0:9a67044d749e | 8 | * copies of the Software, and to permit persons to whom the Software is |
serbm | 0:9a67044d749e | 9 | * furnished to do so, subject to the following conditions: |
serbm | 0:9a67044d749e | 10 | * |
serbm | 0:9a67044d749e | 11 | * The above copyright notice and this permission notice shall be included in |
serbm | 0:9a67044d749e | 12 | * all copies or substantial portions of the Software. |
serbm | 0:9a67044d749e | 13 | * |
serbm | 0:9a67044d749e | 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
serbm | 0:9a67044d749e | 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
serbm | 0:9a67044d749e | 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
serbm | 0:9a67044d749e | 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
serbm | 0:9a67044d749e | 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
serbm | 0:9a67044d749e | 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
serbm | 0:9a67044d749e | 20 | * THE SOFTWARE |
serbm | 0:9a67044d749e | 21 | */ |
serbm | 0:9a67044d749e | 22 | |
serbm | 0:9a67044d749e | 23 | #ifndef KEYPAD_H |
serbm | 0:9a67044d749e | 24 | #define KEYPAD_H |
serbm | 0:9a67044d749e | 25 | |
serbm | 0:9a67044d749e | 26 | #include "mbed.h" |
serbm | 0:9a67044d749e | 27 | #include "FPointer.h" |
serbm | 0:9a67044d749e | 28 | |
serbm | 0:9a67044d749e | 29 | /** |
serbm | 0:9a67044d749e | 30 | * An interrupt-based interface to 4x4 keypad. |
serbm | 0:9a67044d749e | 31 | * |
serbm | 0:9a67044d749e | 32 | * On each key pressed on a keypad, the index of the key is passed to a |
serbm | 0:9a67044d749e | 33 | * user-defined function. User is free to define what to be done with the |
serbm | 0:9a67044d749e | 34 | * input. |
serbm | 0:9a67044d749e | 35 | * |
serbm | 0:9a67044d749e | 36 | * This library makes use of |
serbm | 0:9a67044d749e | 37 | * @see http://mbed.org/cookbook/FPointer by Andy Kirkham |
serbm | 0:9a67044d749e | 38 | * |
serbm | 0:9a67044d749e | 39 | * Example: |
serbm | 0:9a67044d749e | 40 | * @code |
serbm | 0:9a67044d749e | 41 | * #include "mbed.h" |
serbm | 0:9a67044d749e | 42 | * #include "keypad.h" |
serbm | 0:9a67044d749e | 43 | * |
serbm | 0:9a67044d749e | 44 | * // Define your own keypad values |
serbm | 0:9a67044d749e | 45 | * char Keytable[] = { '1', '2', '3', 'A', |
serbm | 0:9a67044d749e | 46 | * '4', '5', '6', 'B', |
serbm | 0:9a67044d749e | 47 | * '7', '8', '9', 'C', |
serbm | 0:9a67044d749e | 48 | * '*', '0', '#', 'D' |
serbm | 0:9a67044d749e | 49 | * }; |
serbm | 0:9a67044d749e | 50 | * |
serbm | 0:9a67044d749e | 51 | * uint32_t cbAfterInput(uint32_t index) { |
serbm | 0:9a67044d749e | 52 | * printf("Index:%d => Key:%c\n", key, Keytable[index]); |
serbm | 0:9a67044d749e | 53 | * return 0; |
serbm | 0:9a67044d749e | 54 | * } |
serbm | 0:9a67044d749e | 55 | * |
serbm | 0:9a67044d749e | 56 | * int main() { |
serbm | 0:9a67044d749e | 57 | * Keypad keypad(p25, p26, p27, p28, p21, p22, p23, p24); |
serbm | 0:9a67044d749e | 58 | * keypad.CallAfterInput(&cbAfterInput); |
serbm | 0:9a67044d749e | 59 | * keypad.Start(); |
serbm | 0:9a67044d749e | 60 | * |
serbm | 0:9a67044d749e | 61 | * while (1) { |
serbm | 0:9a67044d749e | 62 | * wait_ms(100); |
serbm | 0:9a67044d749e | 63 | * } |
serbm | 0:9a67044d749e | 64 | * } |
serbm | 0:9a67044d749e | 65 | * @endcode |
serbm | 0:9a67044d749e | 66 | */ |
serbm | 0:9a67044d749e | 67 | class Keypad |
serbm | 0:9a67044d749e | 68 | { |
serbm | 0:9a67044d749e | 69 | public: |
serbm | 0:9a67044d749e | 70 | /** Create a Keypad interface |
serbm | 0:9a67044d749e | 71 | * |
serbm | 0:9a67044d749e | 72 | * @param row<3..0> Row data lines |
serbm | 0:9a67044d749e | 73 | * @param col<3..0> Column data lines |
serbm | 0:9a67044d749e | 74 | * @param debounce_ms Debounce in ms (Default to 20ms) |
serbm | 0:9a67044d749e | 75 | */ |
serbm | 0:9a67044d749e | 76 | Keypad(PinName row3, PinName row2, PinName row1, PinName row0, |
serbm | 0:9a67044d749e | 77 | PinName col3, PinName col2, PinName col1, PinName col0, |
serbm | 0:9a67044d749e | 78 | int debounce_ms = 20); |
serbm | 0:9a67044d749e | 79 | |
serbm | 0:9a67044d749e | 80 | /** Start the keypad interrupt routines |
serbm | 0:9a67044d749e | 81 | */ |
serbm | 0:9a67044d749e | 82 | void Start(void); |
serbm | 0:9a67044d749e | 83 | |
serbm | 0:9a67044d749e | 84 | /** Stop the keypad interrupt routines |
serbm | 0:9a67044d749e | 85 | */ |
serbm | 0:9a67044d749e | 86 | void Stop(void); |
serbm | 0:9a67044d749e | 87 | |
serbm | 0:9a67044d749e | 88 | /** Scan the keyboard for a debounced pressed key |
serbm | 0:9a67044d749e | 89 | */ |
serbm | 0:9a67044d749e | 90 | int DebouncedScan(void); |
serbm | 0:9a67044d749e | 91 | |
serbm | 0:9a67044d749e | 92 | /** Scan the keyboard for a pressed key |
serbm | 0:9a67044d749e | 93 | */ |
serbm | 0:9a67044d749e | 94 | int Scan(void); |
serbm | 0:9a67044d749e | 95 | |
serbm | 0:9a67044d749e | 96 | /** Scan the keyboard for multiple debounced pressed keys |
serbm | 0:9a67044d749e | 97 | */ |
serbm | 0:9a67044d749e | 98 | int DebouncedScanMultiple(void); |
serbm | 0:9a67044d749e | 99 | |
serbm | 0:9a67044d749e | 100 | /** Scan the keyboard for multiple pressed keys |
serbm | 0:9a67044d749e | 101 | */ |
serbm | 0:9a67044d749e | 102 | int ScanMultiple(void); |
serbm | 0:9a67044d749e | 103 | |
serbm | 0:9a67044d749e | 104 | /** User-defined function that to be called when a key is pressed |
serbm | 0:9a67044d749e | 105 | * @param fptr A function pointer takes a uint32_t and |
serbm | 0:9a67044d749e | 106 | * returns uint32_t |
serbm | 0:9a67044d749e | 107 | */ |
serbm | 0:9a67044d749e | 108 | void CallAfterInput(uint32_t (*fptr)(uint32_t)); |
serbm | 0:9a67044d749e | 109 | |
serbm | 0:9a67044d749e | 110 | protected: |
serbm | 0:9a67044d749e | 111 | static const int row_count = 4; |
serbm | 0:9a67044d749e | 112 | static const int col_count = 4; |
serbm | 0:9a67044d749e | 113 | |
serbm | 0:9a67044d749e | 114 | InterruptIn _row0; |
serbm | 0:9a67044d749e | 115 | InterruptIn _row1; |
serbm | 0:9a67044d749e | 116 | InterruptIn _row2; |
serbm | 0:9a67044d749e | 117 | InterruptIn _row3; |
serbm | 0:9a67044d749e | 118 | InterruptIn *_rows[row_count]; |
serbm | 0:9a67044d749e | 119 | BusInOut _cols; // BusOut doesn't support mode() yet; need open drain to prevent short circuits... |
serbm | 0:9a67044d749e | 120 | int _debounce; |
serbm | 0:9a67044d749e | 121 | FPointer _input; // Called after each input |
serbm | 0:9a67044d749e | 122 | |
serbm | 0:9a67044d749e | 123 | void _callback(); |
serbm | 0:9a67044d749e | 124 | void _setupFallTrigger(void); |
serbm | 0:9a67044d749e | 125 | }; |
serbm | 0:9a67044d749e | 126 | |
serbm | 0:9a67044d749e | 127 | #endif // KEYPAD_H |