Essai d'application Lycée Malraux NSI
Dependencies: BLE_API nRF51822 mbed-dev-bin
Diff: source/drivers/MicroBitMultiButton.cpp
- Revision:
- 1:8aa5cdb4ab67
- Child:
- 69:b62f231e51ce
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/drivers/MicroBitMultiButton.cpp Thu Apr 07 01:33:22 2016 +0100 @@ -0,0 +1,298 @@ +/* +The MIT License (MIT) + +Copyright (c) 2016 British Broadcasting Corporation. +This software is provided by Lancaster University by arrangement with the BBC. + +Permission is hereby granted, free of charge, to any person obtaining a +copy of this software and associated documentation files (the "Software"), +to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, +and/or sell copies of the Software, and to permit persons to whom the +Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. +*/ + +/** + * Class definition for MicroBitMultiButton. + * + * Represents a virtual button, capable of reacting to simultaneous presses of two + * other buttons. + */ +#include "MicroBitConfig.h" +#include "MicroBitMultiButton.h" + +/** + * Constructor. + * + * Create a representation of a virtual button, that generates events based upon the combination + * of two given buttons. + * + * @param button1 the unique ID of the first button to watch. + * + * @param button2 the unique ID of the second button to watch. + * + * @param id the unique EventModel id of this MicroBitMultiButton instance. + * + * @code + * multiButton(MICROBIT_ID_BUTTON_A, MICROBIT_ID_BUTTON_B, MICROBIT_ID_BUTTON_AB); + * @endcode + */ +MicroBitMultiButton::MicroBitMultiButton(uint16_t button1, uint16_t button2, uint16_t id) +{ + this->id = id; + this->button1 = button1; + this->button2 = button2; + this->eventConfiguration = MICROBIT_BUTTON_SIMPLE_EVENTS; + + if (EventModel::defaultEventBus) + { + EventModel::defaultEventBus->listen(button1, MICROBIT_EVT_ANY, this, &MicroBitMultiButton::onButtonEvent, MESSAGE_BUS_LISTENER_IMMEDIATE); + EventModel::defaultEventBus->listen(button2, MICROBIT_EVT_ANY, this, &MicroBitMultiButton::onButtonEvent, MESSAGE_BUS_LISTENER_IMMEDIATE); + } +} + +/** + * Retrieves the button id for the alternate button id given. + * + * @param b the id of the button whose state we would like to retrieve. + * + * @return the other sub button id. + */ +uint16_t MicroBitMultiButton::otherSubButton(uint16_t b) +{ + return (b == button1 ? button2 : button1); +} + +/** + * Determines if the given button id is marked as pressed. + * + * @param button the id of the button whose state we would like to retrieve. + * + * @return 1 if pressed, 0 if not. + */ +int MicroBitMultiButton::isSubButtonPressed(uint16_t button) +{ + if (button == button1) + return status & MICROBIT_MULTI_BUTTON_STATE_1; + + if (button == button2) + return status & MICROBIT_MULTI_BUTTON_STATE_2; + + return 0; +} + +/** + * Determines if the given button id is marked as held. + * + * @param button the id of the button whose state we would like to retrieve. + * + * @return 1 if held, 0 if not. + */ +int MicroBitMultiButton::isSubButtonHeld(uint16_t button) +{ + if (button == button1) + return status & MICROBIT_MULTI_BUTTON_HOLD_TRIGGERED_1; + + if (button == button2) + return status & MICROBIT_MULTI_BUTTON_HOLD_TRIGGERED_2; + + return 0; +} + +/** + * Determines if the given button id is marked as supressed. + * + * @param button the id of the button whose state we would like to retrieve. + * + * @return 1 if supressed, 0 if not. + */ +int MicroBitMultiButton::isSubButtonSupressed(uint16_t button) +{ + if (button == button1) + return status & MICROBIT_MULTI_BUTTON_SUPRESSED_1; + + if (button == button2) + return status & MICROBIT_MULTI_BUTTON_SUPRESSED_2; + + return 0; +} + +/** + * Configures the button pressed state for the given button id. + * + * @param button the id of the button whose state requires updating. + * + * @param value the value to set for this buttons state. (Transformed into a logical 0 or 1). + */ +void MicroBitMultiButton::setButtonState(uint16_t button, int value) +{ + if (button == button1) + { + if (value) + status |= MICROBIT_MULTI_BUTTON_STATE_1; + else + status &= ~MICROBIT_MULTI_BUTTON_STATE_1; + } + + if (button == button2) + { + if (value) + status |= MICROBIT_MULTI_BUTTON_STATE_2; + else + status &= ~MICROBIT_MULTI_BUTTON_STATE_2; + } +} + +/** + * Configures the button held state for the given button id. + * + * @param button the id of the button whose state requires updating. + * + * @param value the value to set for this buttons state. (Transformed into a logical 0 or 1). + */ +void MicroBitMultiButton::setHoldState(uint16_t button, int value) +{ + if (button == button1) + { + if (value) + status |= MICROBIT_MULTI_BUTTON_HOLD_TRIGGERED_1; + else + status &= ~MICROBIT_MULTI_BUTTON_HOLD_TRIGGERED_1; + } + + if (button == button2) + { + if (value) + status |= MICROBIT_MULTI_BUTTON_HOLD_TRIGGERED_2; + else + status &= ~MICROBIT_MULTI_BUTTON_HOLD_TRIGGERED_2; + } +} + +/** + * Configures the button suppressed state for the given button id. + * + * @param button the id of the button whose state requires updating. + * + * @param value the value to set for this buttons state. (Transformed into a logical 0 or 1). + */ +void MicroBitMultiButton::setSupressedState(uint16_t button, int value) +{ + if (button == button1) + { + if (value) + status |= MICROBIT_MULTI_BUTTON_SUPRESSED_1; + else + status &= ~MICROBIT_MULTI_BUTTON_SUPRESSED_1; + } + + if (button == button2) + { + if (value) + status |= MICROBIT_MULTI_BUTTON_SUPRESSED_2; + else + status &= ~MICROBIT_MULTI_BUTTON_SUPRESSED_2; + } +} + +/** + * Changes the event configuration of this button to the given MicroBitButtonEventConfiguration. + * All subsequent events generated by this button will then be informed by this configuraiton. + * + * @param config The new configuration for this button. Legal values are MICROBIT_BUTTON_ALL_EVENTS or MICROBIT_BUTTON_SIMPLE_EVENTS. + * + * @code + * // Configure a button to generate all possible events. + * buttonAB.setEventConfiguration(MICROBIT_BUTTON_ALL_EVENTS); + * + * // Configure a button to suppress MICROBIT_BUTTON_EVT_CLICK and MICROBIT_BUTTON_EVT_LONG_CLICK events. + * buttonAB.setEventConfiguration(MICROBIT_BUTTON_SIMPLE_EVENTS); + * @endcode + */ +void MicroBitMultiButton::setEventConfiguration(MicroBitButtonEventConfiguration config) +{ + this->eventConfiguration = config; +} + +/** + * A member function that is invoked when any event is detected from the two + * button IDs this MicrobitMultiButton instance was constructed with. + * + * @param evt the event received from the default EventModel. + */ +void MicroBitMultiButton::onButtonEvent(MicroBitEvent evt) +{ + int button = evt.source; + int otherButton = otherSubButton(button); + + switch(evt.value) + { + case MICROBIT_BUTTON_EVT_DOWN: + setButtonState(button, 1); + if(isSubButtonPressed(otherButton)) + MicroBitEvent e(id, MICROBIT_BUTTON_EVT_DOWN); + + break; + + case MICROBIT_BUTTON_EVT_HOLD: + setHoldState(button, 1); + if(isSubButtonHeld(otherButton)) + MicroBitEvent e(id, MICROBIT_BUTTON_EVT_HOLD); + + break; + + case MICROBIT_BUTTON_EVT_UP: + if(isSubButtonPressed(otherButton)) + { + MicroBitEvent e(id, MICROBIT_BUTTON_EVT_UP); + + if (isSubButtonHeld(button) && isSubButtonHeld(otherButton)) + MicroBitEvent e(id, MICROBIT_BUTTON_EVT_LONG_CLICK); + else + MicroBitEvent e(id, MICROBIT_BUTTON_EVT_CLICK); + + setSupressedState(otherButton, 1); + } + else if (!isSubButtonSupressed(button) && eventConfiguration == MICROBIT_BUTTON_ALL_EVENTS) + { + if (isSubButtonHeld(button)) + MicroBitEvent e(button, MICROBIT_BUTTON_EVT_LONG_CLICK); + else + MicroBitEvent e(button, MICROBIT_BUTTON_EVT_CLICK); + } + + setButtonState(button, 0); + setHoldState(button, 0); + setSupressedState(button, 0); + + break; + + } +} + + +/** + * Tests if this MicroBitMultiButton instance is virtually pressed. + * + * @return 1 if both physical buttons are pressed simultaneously. + * + * @code + * if(buttonAB.isPressed()) + * display.scroll("Pressed!"); + * @endcode + */ +int MicroBitMultiButton::isPressed() +{ + return ((status & MICROBIT_MULTI_BUTTON_STATE_1) && (status & MICROBIT_MULTI_BUTTON_STATE_2)); +}