Vinícius Alves / Mbed 2 deprecated MenuLCD_copy

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Dependencies:   MenuLCD mbed

menbed/menbedButtonHandler.cpp@0:92357d1220f3, 2017-05-19 (annotated)

Committer:
ViniR
Date:
Fri May 19 13:07:52 2017 +0000
Revision:
0:92357d1220f3
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ViniR 0:92357d1220f3 1 #include "mbed.h"
ViniR 0:92357d1220f3 2 #include "include/menbedNavigator.h"
ViniR 0:92357d1220f3 3 #include "include/menbedButtonHandlerTimespec.h"
ViniR 0:92357d1220f3 4 #include "include/menbedButtonHandler.h"
ViniR 0:92357d1220f3 5
ViniR 0:92357d1220f3 6 MenbedButtonHandler::MenbedButtonHandler (PinName selectPin, PinName downPin,
ViniR 0:92357d1220f3 7 PinName upPin, PinName cancelPin, MenbedButtonHandlerTimespec *timespec,
ViniR 0:92357d1220f3 8 MenbedNavigator *navigator) :
ViniR 0:92357d1220f3 9 //select(select), down(down), up(up), cancel(cancel),
ViniR 0:92357d1220f3 10 timespec(timespec), navigator(navigator)
ViniR 0:92357d1220f3 11 {
ViniR 0:92357d1220f3 12 select = new DigitalIn(selectPin);
ViniR 0:92357d1220f3 13 down = new DigitalIn(downPin);
ViniR 0:92357d1220f3 14 up = new DigitalIn(upPin);
ViniR 0:92357d1220f3 15 cancel = new DigitalIn(cancelPin);
ViniR 0:92357d1220f3 16
ViniR 0:92357d1220f3 17 numButtons = 4;
ViniR 0:92357d1220f3 18
ViniR 0:92357d1220f3 19 select->mode (PullDown);
ViniR 0:92357d1220f3 20 down->mode (PullDown);
ViniR 0:92357d1220f3 21 up->mode (PullDown);
ViniR 0:92357d1220f3 22 cancel->mode (PullDown);
ViniR 0:92357d1220f3 23
ViniR 0:92357d1220f3 24 init();
ViniR 0:92357d1220f3 25 }
ViniR 0:92357d1220f3 26
ViniR 0:92357d1220f3 27
ViniR 0:92357d1220f3 28 MenbedButtonHandler::MenbedButtonHandler (PinName selectPin, PinName downPin,
ViniR 0:92357d1220f3 29 PinName upPin, MenbedButtonHandlerTimespec *timespec,
ViniR 0:92357d1220f3 30 MenbedNavigator *navigator) :
ViniR 0:92357d1220f3 31 timespec(timespec), navigator(navigator)
ViniR 0:92357d1220f3 32 {
ViniR 0:92357d1220f3 33 select = new DigitalIn(selectPin);
ViniR 0:92357d1220f3 34 down = new DigitalIn(downPin);
ViniR 0:92357d1220f3 35 up = new DigitalIn(upPin);
ViniR 0:92357d1220f3 36
ViniR 0:92357d1220f3 37 numButtons = 3;
ViniR 0:92357d1220f3 38
ViniR 0:92357d1220f3 39 select->mode (PullDown);
ViniR 0:92357d1220f3 40 down->mode (PullDown);
ViniR 0:92357d1220f3 41 up->mode (PullDown);
ViniR 0:92357d1220f3 42
ViniR 0:92357d1220f3 43 init();
ViniR 0:92357d1220f3 44 }
ViniR 0:92357d1220f3 45
ViniR 0:92357d1220f3 46
ViniR 0:92357d1220f3 47 MenbedButtonHandler::MenbedButtonHandler (PinName selectPin, PinName downPin,
ViniR 0:92357d1220f3 48 MenbedButtonHandlerTimespec *timespec,
ViniR 0:92357d1220f3 49 MenbedNavigator *navigator) :
ViniR 0:92357d1220f3 50 timespec(timespec), navigator(navigator)
ViniR 0:92357d1220f3 51 {
ViniR 0:92357d1220f3 52 select = new DigitalIn(selectPin);
ViniR 0:92357d1220f3 53 down = new DigitalIn(downPin);
ViniR 0:92357d1220f3 54
ViniR 0:92357d1220f3 55 numButtons = 2;
ViniR 0:92357d1220f3 56
ViniR 0:92357d1220f3 57 select->mode (PullDown);
ViniR 0:92357d1220f3 58 down->mode (PullDown);
ViniR 0:92357d1220f3 59
ViniR 0:92357d1220f3 60 init();
ViniR 0:92357d1220f3 61 }
ViniR 0:92357d1220f3 62
ViniR 0:92357d1220f3 63
ViniR 0:92357d1220f3 64 void MenbedButtonHandler::init()
ViniR 0:92357d1220f3 65 {
ViniR 0:92357d1220f3 66 for (int i=0; i<4; i++)
ViniR 0:92357d1220f3 67 {
ViniR 0:92357d1220f3 68 buttonDebounced[i] = false;
ViniR 0:92357d1220f3 69 buttonAlreadyDepressed[i] = false;
ViniR 0:92357d1220f3 70 }
ViniR 0:92357d1220f3 71
ViniR 0:92357d1220f3 72 currentTime_us = 0;
ViniR 0:92357d1220f3 73 ticker.attach_us (this, &MenbedButtonHandler::tick,
ViniR 0:92357d1220f3 74 timespec->scanPeriod_us);
ViniR 0:92357d1220f3 75 }
ViniR 0:92357d1220f3 76
ViniR 0:92357d1220f3 77
ViniR 0:92357d1220f3 78 void MenbedButtonHandler::tick (void)
ViniR 0:92357d1220f3 79 {
ViniR 0:92357d1220f3 80 // Accumulated amount of time that buttons have been continuously depressed
ViniR 0:92357d1220f3 81 uint32_t buttonDepressedTime_us;
ViniR 0:92357d1220f3 82 bool buttonCurrentlyDepressed;
ViniR 0:92357d1220f3 83
ViniR 0:92357d1220f3 84 MenbedButtonEvent buttonEvent;
ViniR 0:92357d1220f3 85 buttonEvent.numButtons = numButtons;
ViniR 0:92357d1220f3 86
ViniR 0:92357d1220f3 87 currentTime_us += timespec->scanPeriod_us;
ViniR 0:92357d1220f3 88
ViniR 0:92357d1220f3 89 // Cycle through each of the buttons
ViniR 0:92357d1220f3 90 for (int i=MenbedButtonEvent::ButtonSelect;
ViniR 0:92357d1220f3 91 (i<=MenbedButtonEvent::ButtonCancel) && (i<numButtons);
ViniR 0:92357d1220f3 92 i++)
ViniR 0:92357d1220f3 93 {
ViniR 0:92357d1220f3 94 buttonEvent.name = (MenbedButtonEvent::ButtonName)i;
ViniR 0:92357d1220f3 95 buttonCurrentlyDepressed =
ViniR 0:92357d1220f3 96 isButtonDepressed((MenbedButtonEvent::ButtonName)i);
ViniR 0:92357d1220f3 97
ViniR 0:92357d1220f3 98 // The amount of time the current button has been depressed is
ViniR 0:92357d1220f3 99 // the current time minus the time which the button was first
ViniR 0:92357d1220f3 100 // depressed.
ViniR 0:92357d1220f3 101 buttonDepressedTime_us = currentTime_us - buttonPushedTime_us[i];
ViniR 0:92357d1220f3 102
ViniR 0:92357d1220f3 103 if (buttonCurrentlyDepressed && buttonAlreadyDepressed[i])
ViniR 0:92357d1220f3 104 {
ViniR 0:92357d1220f3 105 if ((buttonDepressedTime_us >= timespec->typematicX10Delay_us) &&
ViniR 0:92357d1220f3 106 (currentTime_us - buttonLastTypematicTime_us[i] >=
ViniR 0:92357d1220f3 107 timespec->typematicX10Period_us ))
ViniR 0:92357d1220f3 108 {
ViniR 0:92357d1220f3 109 buttonLastTypematicTime_us[i] = currentTime_us;
ViniR 0:92357d1220f3 110 buttonEvent.action = MenbedButtonEvent::BUTTON_ACTION_PUSHED;
ViniR 0:92357d1220f3 111 navigator->handleButtonEvent (buttonEvent);
ViniR 0:92357d1220f3 112 }
ViniR 0:92357d1220f3 113 else if ((buttonDepressedTime_us >=
ViniR 0:92357d1220f3 114 timespec->typematicPeriod_us)
ViniR 0:92357d1220f3 115 && (currentTime_us - buttonLastTypematicTime_us[i] >=
ViniR 0:92357d1220f3 116 timespec->typematicPeriod_us))
ViniR 0:92357d1220f3 117 {
ViniR 0:92357d1220f3 118 buttonLastTypematicTime_us[i] = currentTime_us;
ViniR 0:92357d1220f3 119 buttonEvent.action = MenbedButtonEvent::BUTTON_ACTION_PUSHED;
ViniR 0:92357d1220f3 120 navigator->handleButtonEvent (buttonEvent);
ViniR 0:92357d1220f3 121 }
ViniR 0:92357d1220f3 122 else if ((buttonDepressedTime_us >= timespec->debounceDelay_us)
ViniR 0:92357d1220f3 123 && (!buttonDebounced[i]))
ViniR 0:92357d1220f3 124 {
ViniR 0:92357d1220f3 125 buttonLastTypematicTime_us[i] = currentTime_us;
ViniR 0:92357d1220f3 126 buttonDebounced[i] = true;
ViniR 0:92357d1220f3 127 buttonEvent.action = MenbedButtonEvent::BUTTON_ACTION_PUSHED;
ViniR 0:92357d1220f3 128 navigator->handleButtonEvent (buttonEvent);
ViniR 0:92357d1220f3 129 }
ViniR 0:92357d1220f3 130
ViniR 0:92357d1220f3 131 if (buttonDebounced[i] &&
ViniR 0:92357d1220f3 132 (buttonDepressedTime_us >=
ViniR 0:92357d1220f3 133 timespec->longReleaseDelay_us))
ViniR 0:92357d1220f3 134 {
ViniR 0:92357d1220f3 135 buttonEvent.action = MenbedButtonEvent::BUTTON_ACTION_HELD_LONG;
ViniR 0:92357d1220f3 136 navigator->handleButtonEvent (buttonEvent);
ViniR 0:92357d1220f3 137 }
ViniR 0:92357d1220f3 138
ViniR 0:92357d1220f3 139 buttonAlreadyDepressed[i] = true;
ViniR 0:92357d1220f3 140 }
ViniR 0:92357d1220f3 141 // Otherwise, if the button was just depressed, we indicate that it
ViniR 0:92357d1220f3 142 // has not yet debounced and record the time so that we know when it
ViniR 0:92357d1220f3 143 // was first pressed.
ViniR 0:92357d1220f3 144 else if (buttonCurrentlyDepressed && !buttonAlreadyDepressed[i])
ViniR 0:92357d1220f3 145 {
ViniR 0:92357d1220f3 146 buttonDebounced[i] = false;
ViniR 0:92357d1220f3 147 buttonPushedTime_us[i] = currentTime_us;
ViniR 0:92357d1220f3 148
ViniR 0:92357d1220f3 149 buttonAlreadyDepressed[i] = true;
ViniR 0:92357d1220f3 150 }
ViniR 0:92357d1220f3 151 // Otherwise, if the button is not depressed but it was previously
ViniR 0:92357d1220f3 152 // depressed and the amount of time it was depressed exceeds the
ViniR 0:92357d1220f3 153 // debounce time, then we say the button has been released.
ViniR 0:92357d1220f3 154 else if (!buttonCurrentlyDepressed && buttonAlreadyDepressed[i])
ViniR 0:92357d1220f3 155 {
ViniR 0:92357d1220f3 156 if (buttonDebounced[i])
ViniR 0:92357d1220f3 157 {
ViniR 0:92357d1220f3 158 if (buttonDepressedTime_us >=
ViniR 0:92357d1220f3 159 timespec->longReleaseDelay_us)
ViniR 0:92357d1220f3 160 {
ViniR 0:92357d1220f3 161 buttonEvent.action = MenbedButtonEvent::BUTTON_ACTION_RELEASED_LONG;
ViniR 0:92357d1220f3 162 navigator->handleButtonEvent (buttonEvent);
ViniR 0:92357d1220f3 163 }
ViniR 0:92357d1220f3 164 else
ViniR 0:92357d1220f3 165 {
ViniR 0:92357d1220f3 166 buttonEvent.action = MenbedButtonEvent::BUTTON_ACTION_RELEASED_SHORT;
ViniR 0:92357d1220f3 167 navigator->handleButtonEvent (buttonEvent);
ViniR 0:92357d1220f3 168 }
ViniR 0:92357d1220f3 169 }
ViniR 0:92357d1220f3 170
ViniR 0:92357d1220f3 171 buttonAlreadyDepressed[i] = false;
ViniR 0:92357d1220f3 172 }
ViniR 0:92357d1220f3 173 }
ViniR 0:92357d1220f3 174 }
ViniR 0:92357d1220f3 175
ViniR 0:92357d1220f3 176
ViniR 0:92357d1220f3 177 bool MenbedButtonHandler::isButtonDepressed (MenbedButtonEvent::ButtonName name)
ViniR 0:92357d1220f3 178 {
ViniR 0:92357d1220f3 179 switch (name)
ViniR 0:92357d1220f3 180 {
ViniR 0:92357d1220f3 181 case MenbedButtonEvent::ButtonSelect:
ViniR 0:92357d1220f3 182 return *select;
ViniR 0:92357d1220f3 183 case MenbedButtonEvent::ButtonDown:
ViniR 0:92357d1220f3 184 if (numButtons >= 2)
ViniR 0:92357d1220f3 185 return *down;
ViniR 0:92357d1220f3 186 else
ViniR 0:92357d1220f3 187 return false;
ViniR 0:92357d1220f3 188 case MenbedButtonEvent::ButtonUp:
ViniR 0:92357d1220f3 189 if (numButtons >= 3)
ViniR 0:92357d1220f3 190 return *up;
ViniR 0:92357d1220f3 191 else
ViniR 0:92357d1220f3 192 return false;
ViniR 0:92357d1220f3 193 case MenbedButtonEvent::ButtonCancel:
ViniR 0:92357d1220f3 194 if (numButtons == 4)
ViniR 0:92357d1220f3 195 return *cancel;
ViniR 0:92357d1220f3 196 else
ViniR 0:92357d1220f3 197 return false;
ViniR 0:92357d1220f3 198 }
ViniR 0:92357d1220f3 199
ViniR 0:92357d1220f3 200 return false;
ViniR 0:92357d1220f3 201 }