Jan Waclawek
/
Simon
would be Simon game, as a demonstrator for buttons debouncing and \"collecting\" ---
DebounceIn__copy.h@2:fe450a70f8a4, 2010-12-14 (annotated)
- Committer:
- wek
- Date:
- Tue Dec 14 00:45:37 2010 +0000
- Revision:
- 2:fe450a70f8a4
- Parent:
- 0:408abc8a3d3e
Finally, the real Simon game. Enjoy! ;-)
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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wek | 0:408abc8a3d3e | 1 | /* |
wek | 0:408abc8a3d3e | 2 | Copyright (c) 2010 Andy Kirkham |
wek | 0:408abc8a3d3e | 3 | |
wek | 0:408abc8a3d3e | 4 | Permission is hereby granted, free of charge, to any person obtaining a copy |
wek | 0:408abc8a3d3e | 5 | of this software and associated documentation files (the "Software"), to deal |
wek | 0:408abc8a3d3e | 6 | in the Software without restriction, including without limitation the rights |
wek | 0:408abc8a3d3e | 7 | to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
wek | 0:408abc8a3d3e | 8 | copies of the Software, and to permit persons to whom the Software is |
wek | 0:408abc8a3d3e | 9 | furnished to do so, subject to the following conditions: |
wek | 0:408abc8a3d3e | 10 | |
wek | 0:408abc8a3d3e | 11 | The above copyright notice and this permission notice shall be included in |
wek | 0:408abc8a3d3e | 12 | all copies or substantial portions of the Software. |
wek | 0:408abc8a3d3e | 13 | |
wek | 0:408abc8a3d3e | 14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
wek | 0:408abc8a3d3e | 15 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
wek | 0:408abc8a3d3e | 16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
wek | 0:408abc8a3d3e | 17 | AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
wek | 0:408abc8a3d3e | 18 | LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
wek | 0:408abc8a3d3e | 19 | OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
wek | 0:408abc8a3d3e | 20 | THE SOFTWARE. |
wek | 0:408abc8a3d3e | 21 | */ |
wek | 0:408abc8a3d3e | 22 | |
wek | 0:408abc8a3d3e | 23 | #ifndef DEBOUNCEIN_H |
wek | 0:408abc8a3d3e | 24 | #define DEBOUNCEIN_H |
wek | 0:408abc8a3d3e | 25 | |
wek | 0:408abc8a3d3e | 26 | #include "mbed.h" |
wek | 0:408abc8a3d3e | 27 | |
wek | 0:408abc8a3d3e | 28 | /** DebounceIn adds mechanical switch debouncing to DigitialIn. |
wek | 0:408abc8a3d3e | 29 | * |
wek | 0:408abc8a3d3e | 30 | * Example: |
wek | 0:408abc8a3d3e | 31 | * @code |
wek | 0:408abc8a3d3e | 32 | * #include "mbed.h" |
wek | 0:408abc8a3d3e | 33 | * #include "DebounceIn.h" |
wek | 0:408abc8a3d3e | 34 | * |
wek | 0:408abc8a3d3e | 35 | * DebounceIn d(p5); |
wek | 0:408abc8a3d3e | 36 | * DigitialOut led1(LED1); |
wek | 0:408abc8a3d3e | 37 | * DigitialOut led2(LED2); |
wek | 0:408abc8a3d3e | 38 | * |
wek | 0:408abc8a3d3e | 39 | * int main() { |
wek | 0:408abc8a3d3e | 40 | * while(1) { |
wek | 0:408abc8a3d3e | 41 | * led1 = d; |
wek | 0:408abc8a3d3e | 42 | * led2 = d.read(); |
wek | 0:408abc8a3d3e | 43 | * } |
wek | 0:408abc8a3d3e | 44 | * } |
wek | 0:408abc8a3d3e | 45 | * @endcode |
wek | 0:408abc8a3d3e | 46 | * |
wek | 0:408abc8a3d3e | 47 | * @see set_debounce_us() To change the sampling frequency. |
wek | 0:408abc8a3d3e | 48 | * @see set_samples() To alter the number of samples. |
wek | 0:408abc8a3d3e | 49 | * |
wek | 0:408abc8a3d3e | 50 | * This example shows one input displayed by two outputs. The input |
wek | 0:408abc8a3d3e | 51 | * is debounced by the default 10ms. |
wek | 0:408abc8a3d3e | 52 | */ |
wek | 0:408abc8a3d3e | 53 | |
wek | 0:408abc8a3d3e | 54 | class DebounceIn : public DigitalIn { |
wek | 0:408abc8a3d3e | 55 | public: |
wek | 0:408abc8a3d3e | 56 | |
wek | 0:408abc8a3d3e | 57 | /** set_debounce_us |
wek | 0:408abc8a3d3e | 58 | * |
wek | 0:408abc8a3d3e | 59 | * Sets the debounce sample period time in microseconds, default is 1000 (1ms) |
wek | 0:408abc8a3d3e | 60 | * |
wek | 0:408abc8a3d3e | 61 | * @param int i The debounce sample period time to set. |
wek | 0:408abc8a3d3e | 62 | */ |
wek | 0:408abc8a3d3e | 63 | void set_debounce_us(int i) { _ticker.attach_us(this, &DebounceIn::_callback, i); } |
wek | 0:408abc8a3d3e | 64 | |
wek | 0:408abc8a3d3e | 65 | /** set_samples |
wek | 0:408abc8a3d3e | 66 | * |
wek | 0:408abc8a3d3e | 67 | * Defines the number of samples before switching the shadow |
wek | 0:408abc8a3d3e | 68 | * definition of the pin. |
wek | 0:408abc8a3d3e | 69 | * |
wek | 0:408abc8a3d3e | 70 | * @param int i The number of samples. |
wek | 0:408abc8a3d3e | 71 | */ |
wek | 0:408abc8a3d3e | 72 | void set_samples(int i) { _samples = i; } |
wek | 0:408abc8a3d3e | 73 | |
wek | 0:408abc8a3d3e | 74 | /** read |
wek | 0:408abc8a3d3e | 75 | * |
wek | 0:408abc8a3d3e | 76 | * Read the value of the debounced pin. |
wek | 0:408abc8a3d3e | 77 | */ |
wek | 0:408abc8a3d3e | 78 | int read(void) { return _shadow; } |
wek | 0:408abc8a3d3e | 79 | |
wek | 0:408abc8a3d3e | 80 | #ifdef MBED_OPERATORS |
wek | 0:408abc8a3d3e | 81 | /** operator int() |
wek | 0:408abc8a3d3e | 82 | * |
wek | 0:408abc8a3d3e | 83 | * Read the value of the debounced pin. |
wek | 0:408abc8a3d3e | 84 | */ |
wek | 0:408abc8a3d3e | 85 | operator int() { return read(); } |
wek | 0:408abc8a3d3e | 86 | #endif |
wek | 0:408abc8a3d3e | 87 | |
wek | 0:408abc8a3d3e | 88 | int pressed; |
wek | 0:408abc8a3d3e | 89 | /** Constructor |
wek | 0:408abc8a3d3e | 90 | * |
wek | 0:408abc8a3d3e | 91 | * @param PinName pin The pin to assign as an input. |
wek | 0:408abc8a3d3e | 92 | */ |
wek | 0:408abc8a3d3e | 93 | DebounceIn(PinName pin, const char *name = NULL) : DigitalIn(pin, name) { _counter = 0; _samples = 10; set_debounce_us(1000); pressed = 0;}; |
wek | 0:408abc8a3d3e | 94 | |
wek | 0:408abc8a3d3e | 95 | protected: |
wek | 0:408abc8a3d3e | 96 | void _callback(void) { |
wek | 0:408abc8a3d3e | 97 | if (DigitalIn::read()) { |
wek | 0:408abc8a3d3e | 98 | if (_counter < _samples) _counter++; |
wek | 0:408abc8a3d3e | 99 | if ((_counter == _samples) && (_shadow == 0)) { |
wek | 0:408abc8a3d3e | 100 | _shadow = 1; |
wek | 0:408abc8a3d3e | 101 | pressed = 1; |
wek | 0:408abc8a3d3e | 102 | } |
wek | 0:408abc8a3d3e | 103 | } |
wek | 0:408abc8a3d3e | 104 | else { |
wek | 0:408abc8a3d3e | 105 | if (_counter > 0) _counter--; |
wek | 0:408abc8a3d3e | 106 | if (_counter == 0) _shadow = 0; |
wek | 0:408abc8a3d3e | 107 | } |
wek | 0:408abc8a3d3e | 108 | } |
wek | 0:408abc8a3d3e | 109 | |
wek | 0:408abc8a3d3e | 110 | Ticker _ticker; |
wek | 0:408abc8a3d3e | 111 | int _shadow; |
wek | 0:408abc8a3d3e | 112 | int _counter; |
wek | 0:408abc8a3d3e | 113 | int _samples; |
wek | 0:408abc8a3d3e | 114 | }; |
wek | 0:408abc8a3d3e | 115 | |
wek | 0:408abc8a3d3e | 116 | #endif |
wek | 0:408abc8a3d3e | 117 |