Pavel S / PinDetect

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Fork of PinDetect by Arturo Alvarado

PinDetect.cpp@5:2b0afd293d1d, 2018-06-28 (annotated)

Committer:
pilotak
Date:
Thu Jun 28 14:02:22 2018 +0200
Revision:
5:2b0afd293d1d
Parent:
4:bacc386fe2ad 
Callback fix for Mbed OS 5.9

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pilotak 4:bacc386fe2ad 1 /*
pilotak 4:bacc386fe2ad 2 Copyright (c) 2010 Andy Kirkham
pilotak 5:2b0afd293d1d 3
pilotak 4:bacc386fe2ad 4 Permission is hereby granted, free of charge, to any person obtaining a copy
pilotak 4:bacc386fe2ad 5 of this software and associated documentation files (the "Software"), to deal
pilotak 4:bacc386fe2ad 6 in the Software without restriction, including without limitation the rights
pilotak 4:bacc386fe2ad 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
pilotak 4:bacc386fe2ad 8 copies of the Software, and to permit persons to whom the Software is
pilotak 4:bacc386fe2ad 9 furnished to do so, subject to the following conditions:
pilotak 5:2b0afd293d1d 10
pilotak 4:bacc386fe2ad 11 The above copyright notice and this permission notice shall be included in
pilotak 4:bacc386fe2ad 12 all copies or substantial portions of the Software.
pilotak 5:2b0afd293d1d 13
pilotak 4:bacc386fe2ad 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
pilotak 4:bacc386fe2ad 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
pilotak 4:bacc386fe2ad 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
pilotak 4:bacc386fe2ad 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
pilotak 4:bacc386fe2ad 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
pilotak 4:bacc386fe2ad 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
pilotak 4:bacc386fe2ad 20 THE SOFTWARE.
pilotak 4:bacc386fe2ad 21 */
pilotak 4:bacc386fe2ad 22
pilotak 4:bacc386fe2ad 23 #include "PinDetect.h"
pilotak 4:bacc386fe2ad 24
pilotak 4:bacc386fe2ad 25 namespace AjK {
pilotak 4:bacc386fe2ad 26
pilotak 5:2b0afd293d1d 27 PinDetect::PinDetect(PinName p) {
pilotak 5:2b0afd293d1d 28 init(p, PullDefault);
pilotak 4:bacc386fe2ad 29 }
pilotak 4:bacc386fe2ad 30
pilotak 5:2b0afd293d1d 31 PinDetect::PinDetect(PinName p, PinMode m) {
pilotak 5:2b0afd293d1d 32 init(p, m);
pilotak 4:bacc386fe2ad 33 }
pilotak 4:bacc386fe2ad 34
pilotak 4:bacc386fe2ad 35
pilotak 5:2b0afd293d1d 36 PinDetect::~PinDetect(void) {
pilotak 4:bacc386fe2ad 37 if ( _ticker ) delete( _ticker );
pilotak 5:2b0afd293d1d 38
pilotak 4:bacc386fe2ad 39 if ( _in ) delete( _in );
pilotak 4:bacc386fe2ad 40 }
pilotak 4:bacc386fe2ad 41
pilotak 4:bacc386fe2ad 42 void PinDetect::init(PinName p, PinMode m) {
pilotak 4:bacc386fe2ad 43 _sampleTime = PINDETECT_SAMPLE_PERIOD;
pilotak 4:bacc386fe2ad 44 _samplesTillAssert = PINDETECT_ASSERT_COUNT;
pilotak 4:bacc386fe2ad 45 _samplesTillHeld = 0;
pilotak 4:bacc386fe2ad 46 _samplesTillAssertReload = PINDETECT_ASSERT_COUNT;
pilotak 4:bacc386fe2ad 47 _samplesTillHeldReload = PINDETECT_HOLD_COUNT;
pilotak 5:2b0afd293d1d 48 _assertValue = PINDETECT_PIN_ASSERTED;
pilotak 5:2b0afd293d1d 49
pilotak 5:2b0afd293d1d 50 _in = new DigitalIn(p);
pilotak 5:2b0afd293d1d 51 _in->mode(m);
pilotak 5:2b0afd293d1d 52 _prevState = _in->read();
pilotak 4:bacc386fe2ad 53 _ticker = new Ticker;
pilotak 5:2b0afd293d1d 54
pilotak 5:2b0afd293d1d 55 _callbackAsserted = NULL;
pilotak 5:2b0afd293d1d 56 _callbackDeasserted = NULL;
pilotak 5:2b0afd293d1d 57 _callbackAssertedHeld = NULL;
pilotak 5:2b0afd293d1d 58 _callbackDeassertedHeld = NULL;
pilotak 4:bacc386fe2ad 59 }
pilotak 4:bacc386fe2ad 60
pilotak 5:2b0afd293d1d 61 void PinDetect::setSampleFrequency(int i) {
pilotak 5:2b0afd293d1d 62 _sampleTime = i;
pilotak 5:2b0afd293d1d 63 _prevState = _in->read();
pilotak 5:2b0afd293d1d 64 _ticker->attach_us(callback(this, &PinDetect::isr), _sampleTime);
pilotak 4:bacc386fe2ad 65 }
pilotak 4:bacc386fe2ad 66
pilotak 5:2b0afd293d1d 67 void PinDetect::setAssertValue(int i) {
pilotak 4:bacc386fe2ad 68 _assertValue = i & 1;
pilotak 4:bacc386fe2ad 69 }
pilotak 4:bacc386fe2ad 70
pilotak 4:bacc386fe2ad 71 void PinDetect::setSamplesTillAssert(int i) {
pilotak 4:bacc386fe2ad 72 _samplesTillAssertReload = i;
pilotak 4:bacc386fe2ad 73 }
pilotak 4:bacc386fe2ad 74
pilotak 4:bacc386fe2ad 75 void PinDetect::setSamplesTillHeld(int i) {
pilotak 4:bacc386fe2ad 76 _samplesTillHeldReload = i;
pilotak 4:bacc386fe2ad 77 }
pilotak 4:bacc386fe2ad 78
pilotak 4:bacc386fe2ad 79 void PinDetect::mode(PinMode m) {
pilotak 5:2b0afd293d1d 80 _in->mode(m);
pilotak 4:bacc386fe2ad 81 }
pilotak 4:bacc386fe2ad 82
pilotak 4:bacc386fe2ad 83 void PinDetect::attach_asserted(Callback<void()> function) {
pilotak 4:bacc386fe2ad 84 core_util_critical_section_enter();
pilotak 5:2b0afd293d1d 85 _callbackAsserted = function;
pilotak 4:bacc386fe2ad 86 core_util_critical_section_exit();
pilotak 4:bacc386fe2ad 87 }
pilotak 4:bacc386fe2ad 88
pilotak 4:bacc386fe2ad 89 void PinDetect::attach_deasserted(Callback<void()> function) {
pilotak 4:bacc386fe2ad 90 core_util_critical_section_enter();
pilotak 5:2b0afd293d1d 91 _callbackDeasserted = function;
pilotak 4:bacc386fe2ad 92 core_util_critical_section_exit();
pilotak 4:bacc386fe2ad 93 }
pilotak 4:bacc386fe2ad 94
pilotak 4:bacc386fe2ad 95 void PinDetect::attach_asserted_held(Callback<void()> function) {
pilotak 4:bacc386fe2ad 96 core_util_critical_section_enter();
pilotak 5:2b0afd293d1d 97 _callbackAssertedHeld = function;
pilotak 4:bacc386fe2ad 98 core_util_critical_section_exit();
pilotak 4:bacc386fe2ad 99 }
pilotak 4:bacc386fe2ad 100
pilotak 4:bacc386fe2ad 101 void PinDetect::attach_deasserted_held(Callback<void()> function) {
pilotak 4:bacc386fe2ad 102 core_util_critical_section_enter();
pilotak 5:2b0afd293d1d 103 _callbackDeassertedHeld = function;
pilotak 4:bacc386fe2ad 104 core_util_critical_section_exit();
pilotak 4:bacc386fe2ad 105 }
pilotak 4:bacc386fe2ad 106
pilotak 4:bacc386fe2ad 107 void PinDetect::isr(void) {
pilotak 4:bacc386fe2ad 108 int currentState = _in->read();
pilotak 4:bacc386fe2ad 109
pilotak 4:bacc386fe2ad 110 if ( currentState != _prevState ) {
pilotak 4:bacc386fe2ad 111 if ( _samplesTillAssert == 0 ) {
pilotak 4:bacc386fe2ad 112 _prevState = currentState;
pilotak 4:bacc386fe2ad 113 _samplesTillHeld = _samplesTillHeldReload;
pilotak 5:2b0afd293d1d 114
pilotak 5:2b0afd293d1d 115 if ( currentState == _assertValue ) {
pilotak 5:2b0afd293d1d 116 if (_callbackAsserted) _callbackAsserted.call();
pilotak 5:2b0afd293d1d 117
pilotak 5:2b0afd293d1d 118 } else {
pilotak 5:2b0afd293d1d 119 if (_callbackDeasserted) _callbackDeasserted.call();
pilotak 5:2b0afd293d1d 120 }
pilotak 5:2b0afd293d1d 121
pilotak 5:2b0afd293d1d 122 } else {
pilotak 4:bacc386fe2ad 123 _samplesTillAssert--;
pilotak 4:bacc386fe2ad 124 }
pilotak 5:2b0afd293d1d 125
pilotak 5:2b0afd293d1d 126 } else {
pilotak 4:bacc386fe2ad 127 _samplesTillAssert = _samplesTillAssertReload;
pilotak 4:bacc386fe2ad 128 }
pilotak 5:2b0afd293d1d 129
pilotak 4:bacc386fe2ad 130 if ( _samplesTillHeld ) {
pilotak 4:bacc386fe2ad 131 if ( _prevState == currentState ) {
pilotak 4:bacc386fe2ad 132 _samplesTillHeld--;
pilotak 5:2b0afd293d1d 133
pilotak 4:bacc386fe2ad 134 if ( _samplesTillHeld == 0 ) {
pilotak 5:2b0afd293d1d 135 if ( currentState == _assertValue ) {
pilotak 5:2b0afd293d1d 136 if (_callbackAssertedHeld) _callbackAssertedHeld.call();
pilotak 5:2b0afd293d1d 137
pilotak 5:2b0afd293d1d 138 } else {
pilotak 5:2b0afd293d1d 139 if (_callbackDeassertedHeld) _callbackDeassertedHeld.call();
pilotak 5:2b0afd293d1d 140 }
pilotak 4:bacc386fe2ad 141 }
pilotak 5:2b0afd293d1d 142
pilotak 5:2b0afd293d1d 143 } else {
pilotak 4:bacc386fe2ad 144 _samplesTillHeld = 0;
pilotak 4:bacc386fe2ad 145 }
pilotak 4:bacc386fe2ad 146 }
pilotak 4:bacc386fe2ad 147 }
pilotak 4:bacc386fe2ad 148 }; // namespace AjK ends.
pilotak 4:bacc386fe2ad 149
pilotak 4:bacc386fe2ad 150 using namespace AjK;
pilotak 4:bacc386fe2ad 151