Andriy Makukha / Mbed 2 deprecated football_project_wo_output

football_project_wo_output

Dependencies:   mbed

Fork of football_project by MZJ

DebounceIn/DebounceIn.h@98:9241041ec253, 2016-06-16 (annotated)

Committer:
andriym
Date:
Thu Jun 16 06:52:07 2016 +0000
Revision:
98:9241041ec253
Parent:
82:1e552cc1a615 
Removed timer.;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
andriym 82:1e552cc1a615 1 /*
andriym 82:1e552cc1a615 2 Copyright (c) 2010 Andy Kirkham
andriym 82:1e552cc1a615 3 Modified (c) 2016 Andriy Makukha
andriym 82:1e552cc1a615 4
andriym 82:1e552cc1a615 5 Permission is hereby granted, free of charge, to any person obtaining a copy
andriym 82:1e552cc1a615 6 of this software and associated documentation files (the "Software"), to deal
andriym 82:1e552cc1a615 7 in the Software without restriction, including without limitation the rights
andriym 82:1e552cc1a615 8 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
andriym 82:1e552cc1a615 9 copies of the Software, and to permit persons to whom the Software is
andriym 82:1e552cc1a615 10 furnished to do so, subject to the following conditions:
andriym 82:1e552cc1a615 11
andriym 82:1e552cc1a615 12 The above copyright notice and this permission notice shall be included in
andriym 82:1e552cc1a615 13 all copies or substantial portions of the Software.
andriym 82:1e552cc1a615 14
andriym 82:1e552cc1a615 15 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
andriym 82:1e552cc1a615 16 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
andriym 82:1e552cc1a615 17 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
andriym 82:1e552cc1a615 18 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
andriym 82:1e552cc1a615 19 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
andriym 82:1e552cc1a615 20 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
andriym 82:1e552cc1a615 21 THE SOFTWARE.
andriym 82:1e552cc1a615 22 */
andriym 82:1e552cc1a615 23
andriym 82:1e552cc1a615 24 #ifndef DEBOUNCEIN_H
andriym 82:1e552cc1a615 25 #define DEBOUNCEIN_H
andriym 82:1e552cc1a615 26
andriym 82:1e552cc1a615 27 #include "mbed.h"
andriym 82:1e552cc1a615 28
andriym 82:1e552cc1a615 29 /** DebounceIn adds mechanical switch debouncing to DigitialIn.
andriym 82:1e552cc1a615 30 *
andriym 82:1e552cc1a615 31 * Example:
andriym 82:1e552cc1a615 32 * @code
andriym 82:1e552cc1a615 33 * #include "mbed.h"
andriym 82:1e552cc1a615 34 * #include "DebounceIn.h"
andriym 82:1e552cc1a615 35 *
andriym 82:1e552cc1a615 36 * DebounceIn d(p5);
andriym 82:1e552cc1a615 37 * DigitialOut led1(LED1);
andriym 82:1e552cc1a615 38 * DigitialOut led2(LED2);
andriym 82:1e552cc1a615 39 *
andriym 82:1e552cc1a615 40 * int main() {
andriym 82:1e552cc1a615 41 * while(1) {
andriym 82:1e552cc1a615 42 * led1 = d;
andriym 82:1e552cc1a615 43 * led2 = d.read();
andriym 82:1e552cc1a615 44 * }
andriym 82:1e552cc1a615 45 * }
andriym 82:1e552cc1a615 46 * @endcode
andriym 82:1e552cc1a615 47 *
andriym 82:1e552cc1a615 48 * Users of this library may also be interested in PinDetect library:-
andriym 82:1e552cc1a615 49 * @see http://mbed.org/users/AjK/libraries/PinDetect/latest
andriym 82:1e552cc1a615 50 *
andriym 82:1e552cc1a615 51 * This example shows one input displayed by two outputs. The input
andriym 82:1e552cc1a615 52 * is debounced by the default 10ms.
andriym 82:1e552cc1a615 53 */
andriym 82:1e552cc1a615 54
andriym 82:1e552cc1a615 55 class DebounceIn : public DigitalIn {
andriym 82:1e552cc1a615 56 public:
andriym 82:1e552cc1a615 57
andriym 82:1e552cc1a615 58 /** start
andriym 82:1e552cc1a615 59 *
andriym 82:1e552cc1a615 60 * Sets the debounce sample period time in microseconds, default is 1000 (1ms)
andriym 82:1e552cc1a615 61 *
andriym 82:1e552cc1a615 62 * @param int i The debounce sample period time to set.
andriym 82:1e552cc1a615 63 */
andriym 82:1e552cc1a615 64 void start(int us=1000) { _ticker.attach_us(this, &DebounceIn::_callback, us); }
andriym 82:1e552cc1a615 65
andriym 82:1e552cc1a615 66 /** read
andriym 82:1e552cc1a615 67 *
andriym 82:1e552cc1a615 68 * Read the value of the debounced pin.
andriym 82:1e552cc1a615 69 */
andriym 82:1e552cc1a615 70 int read(void) { return _shadow; }
andriym 82:1e552cc1a615 71
andriym 82:1e552cc1a615 72 void mode(PinMode pull) {
andriym 82:1e552cc1a615 73 DigitalIn::mode(pull);
andriym 82:1e552cc1a615 74 start();
andriym 82:1e552cc1a615 75 }
andriym 82:1e552cc1a615 76
andriym 82:1e552cc1a615 77 #ifdef MBED_OPERATORS
andriym 82:1e552cc1a615 78 /** operator int()
andriym 82:1e552cc1a615 79 *
andriym 82:1e552cc1a615 80 * Read the value of the debounced pin.
andriym 82:1e552cc1a615 81 */
andriym 82:1e552cc1a615 82 operator int() { return read(); }
andriym 82:1e552cc1a615 83 #endif
andriym 82:1e552cc1a615 84
andriym 82:1e552cc1a615 85 /** Constructor
andriym 82:1e552cc1a615 86 *
andriym 82:1e552cc1a615 87 * @param PinName pin The pin to assign as an input.
andriym 82:1e552cc1a615 88 */
andriym 82:1e552cc1a615 89 DebounceIn(PinName pin, uint8_t nSamples=10) : DigitalIn(pin) { _counter = 0; _samples = nSamples; };
andriym 82:1e552cc1a615 90
andriym 82:1e552cc1a615 91 protected:
andriym 82:1e552cc1a615 92 void _callback(void) {
andriym 82:1e552cc1a615 93 if (DigitalIn::read()) {
andriym 82:1e552cc1a615 94 if (_counter < _samples) _counter++;
andriym 82:1e552cc1a615 95 if (_counter == _samples) _shadow = 1;
andriym 82:1e552cc1a615 96 }
andriym 82:1e552cc1a615 97 else {
andriym 82:1e552cc1a615 98 if (_counter > 0) _counter--;
andriym 82:1e552cc1a615 99 if (_counter == 0) _shadow = 0;
andriym 82:1e552cc1a615 100 }
andriym 82:1e552cc1a615 101 }
andriym 82:1e552cc1a615 102
andriym 82:1e552cc1a615 103 Ticker _ticker;
andriym 82:1e552cc1a615 104 int _shadow;
andriym 82:1e552cc1a615 105 int _counter;
andriym 82:1e552cc1a615 106 int _samples;
andriym 82:1e552cc1a615 107 };
andriym 82:1e552cc1a615 108
andriym 82:1e552cc1a615 109 #endif
andriym 82:1e552cc1a615 110