2016-04-06 15:47:41 +00:00
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/*
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The MIT License (MIT)
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Copyright (c) 2016 British Broadcasting Corporation.
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This software is provided by Lancaster University by arrangement with the BBC.
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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2016-03-24 14:38:04 +00:00
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#include "MicroBitConfig.h"
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/*
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* The underlying Nordic libraries that support BLE do not compile cleanly with the stringent GCC settings we employ
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* If we're compiling under GCC, then we suppress any warnings generated from this code (but not the rest of the DAL)
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* The ARM cc compiler is more tolerant. We don't test __GNUC__ here to detect GCC as ARMCC also typically sets this
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* as a compatability option, but does not support the options used...
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*/
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#if !defined(__arm)
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#pragma GCC diagnostic ignored "-Wunused-function"
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#endif
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#include "MicroBit.h"
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#include "nrf_soc.h"
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/*
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* Return to our predefined compiler settings.
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*/
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#if !defined(__arm)
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#pragma GCC diagnostic pop
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#endif
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2016-03-26 17:11:35 +00:00
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#if CONFIG_ENABLED(MICROBIT_DBG)
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// We create and initialize to NULL here, but MicroBitSerial will automatically update this as needed in its constructor.
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RawSerial* SERIAL_DEBUG = NULL;
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#endif
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2016-03-24 14:38:04 +00:00
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/**
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* Constructor.
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*
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2016-04-05 16:59:57 +00:00
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* Create a representation of a MicroBit device, which includes member variables
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* that represent various device drivers used to control aspects of the micro:bit.
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2016-03-24 14:38:04 +00:00
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*/
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MicroBit::MicroBit() :
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2016-03-26 17:11:35 +00:00
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serial(USBTX, USBRX),
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2016-03-24 14:38:04 +00:00
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resetButton(MICROBIT_PIN_BUTTON_RESET),
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storage(),
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i2c(I2C_SDA0, I2C_SCL0),
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messageBus(),
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display(),
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buttonA(MICROBIT_PIN_BUTTON_A, MICROBIT_ID_BUTTON_A),
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buttonB(MICROBIT_PIN_BUTTON_B, MICROBIT_ID_BUTTON_B),
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buttonAB(MICROBIT_ID_BUTTON_A,MICROBIT_ID_BUTTON_B, MICROBIT_ID_BUTTON_AB),
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accelerometer(i2c),
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compass(i2c, accelerometer, storage),
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compassCalibrator(compass, accelerometer, display),
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thermometer(storage),
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io(MICROBIT_ID_IO_P0,MICROBIT_ID_IO_P1,MICROBIT_ID_IO_P2,
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MICROBIT_ID_IO_P3,MICROBIT_ID_IO_P4,MICROBIT_ID_IO_P5,
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MICROBIT_ID_IO_P6,MICROBIT_ID_IO_P7,MICROBIT_ID_IO_P8,
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MICROBIT_ID_IO_P9,MICROBIT_ID_IO_P10,MICROBIT_ID_IO_P11,
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MICROBIT_ID_IO_P12,MICROBIT_ID_IO_P13,MICROBIT_ID_IO_P14,
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MICROBIT_ID_IO_P15,MICROBIT_ID_IO_P16,MICROBIT_ID_IO_P19,
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MICROBIT_ID_IO_P20),
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bleManager(storage),
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radio(),
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ble(NULL)
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{
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// Clear our status
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status = 0;
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// Bring up soft reset functionality as soon as possible.
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resetButton.mode(PullUp);
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resetButton.fall(this, &MicroBit::reset);
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}
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/**
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* Post constructor initialisation method.
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*
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2016-04-05 16:59:57 +00:00
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* This call will initialised the scheduler, memory allocator and Bluetooth stack.
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*
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* This is required as the Bluetooth stack can't be brought up in a
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* static context i.e. in a constructor.
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*
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2016-03-24 14:38:04 +00:00
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* @code
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* uBit.init();
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* @endcode
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2016-04-05 16:59:57 +00:00
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*
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* @note This method must be called before user code utilises any functionality
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* contained by uBit.
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2016-03-24 14:38:04 +00:00
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*/
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void MicroBit::init()
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{
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if (status & MICROBIT_INITIALIZED)
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return;
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#if CONFIG_ENABLED(MICROBIT_HEAP_ALLOCATOR)
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// Bring up a nested heap allocator.
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microbit_create_nested_heap(MICROBIT_NESTED_HEAP_SIZE);
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#endif
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// Bring up fiber scheduler.
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2016-03-24 23:32:04 +00:00
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scheduler_init(messageBus);
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2016-03-24 14:38:04 +00:00
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// Seed our random number generator
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seedRandom();
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// Create an event handler to trap any handlers being created for I2C services.
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2016-04-05 16:59:57 +00:00
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// We do this to enable initialisation of those services only when they're used,
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2016-03-24 14:38:04 +00:00
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// which saves processor time, memeory and battery life.
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messageBus.listen(MICROBIT_ID_MESSAGE_BUS_LISTENER, MICROBIT_EVT_ANY, this, &MicroBit::onListenerRegisteredEvent);
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status |= MICROBIT_INITIALIZED;
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#if CONFIG_ENABLED(MICROBIT_BLE_PAIRING_MODE)
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// Test if we need to enter BLE pairing mode...
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int i=0;
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sleep(100);
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while (buttonA.isPressed() && buttonB.isPressed() && i<10)
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{
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sleep(100);
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i++;
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if (i == 10)
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{
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#if CONFIG_ENABLED(MICROBIT_HEAP_ALLOCATOR) && CONFIG_ENABLED(MICROBIT_HEAP_REUSE_SD)
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microbit_create_heap(MICROBIT_SD_GATT_TABLE_START + MICROBIT_SD_GATT_TABLE_SIZE, MICROBIT_SD_LIMIT);
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#endif
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// Start the BLE stack, if it isn't already running.
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if (!ble)
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{
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bleManager.init(getName(), getSerial(), messageBus, true);
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ble = bleManager.ble;
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}
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// Enter pairing mode, using the LED matrix for any necessary pairing operations
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bleManager.pairingMode(display, buttonA);
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}
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}
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#endif
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// Attempt to bring up a second heap region, using unused memory normally reserved for Soft Device.
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#if CONFIG_ENABLED(MICROBIT_HEAP_ALLOCATOR) && CONFIG_ENABLED(MICROBIT_HEAP_REUSE_SD)
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#if CONFIG_ENABLED(MICROBIT_BLE_ENABLED)
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microbit_create_heap(MICROBIT_SD_GATT_TABLE_START + MICROBIT_SD_GATT_TABLE_SIZE, MICROBIT_SD_LIMIT);
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#else
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microbit_create_heap(MICROBIT_SRAM_BASE, MICROBIT_SD_LIMIT);
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#endif
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#endif
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#if CONFIG_ENABLED(MICROBIT_BLE_ENABLED)
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// Start the BLE stack, if it isn't already running.
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if (!ble)
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{
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bleManager.init(getName(), getSerial(), messageBus, false);
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ble = bleManager.ble;
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}
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#endif
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}
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/**
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* A listener to perform actions as a result of Message Bus reflection.
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*
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* In some cases we want to perform lazy instantiation of components, such as
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* the compass and the accelerometer, where we only want to add them to the idle
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* fiber when someone has the intention of using these components.
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*/
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void MicroBit::onListenerRegisteredEvent(MicroBitEvent evt)
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{
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switch(evt.value)
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{
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case MICROBIT_ID_BUTTON_AB:
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// A user has registered to receive events from the buttonAB multibutton.
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// Disable click events from being generated by ButtonA and ButtonB, and defer the
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// control of this to the multibutton handler.
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//
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// This way, buttons look independent unless a buttonAB is requested, at which
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// point button A+B clicks can be correclty handled without breaking
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// causal ordering.
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buttonA.setEventConfiguration(MICROBIT_BUTTON_SIMPLE_EVENTS);
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buttonB.setEventConfiguration(MICROBIT_BUTTON_SIMPLE_EVENTS);
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buttonAB.setEventConfiguration(MICROBIT_BUTTON_ALL_EVENTS);
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break;
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case MICROBIT_ID_COMPASS:
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// A listener has been registered for the compass.
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// The compass uses lazy instantiation, we just need to read the data once to start it running.
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// Touch the compass through the heading() function to ensure it is calibrated. if it isn't this will launch any associated calibration algorithms.
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compass.heading();
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break;
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case MICROBIT_ID_ACCELEROMETER:
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// A listener has been registered for the accelerometer.
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// The accelerometer uses lazy instantiation, we just need to read the data once to start it running.
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accelerometer.updateSample();
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break;
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case MICROBIT_ID_THERMOMETER:
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// A listener has been registered for the thermometer.
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// The thermometer uses lazy instantiation, we just need to read the data once to start it running.
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thermometer.updateSample();
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break;
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}
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}
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