Tami Farber / microbit-dal

Revised to disable BLE for radio communication as needed.

Dependencies:   BLE_API nRF51822 mbed-dev-bin

Dependents:   microbit

source/bluetooth/MicroBitAccelerometerService.cpp@74:26717338739d, 2019-11-26 (annotated)

Committer:
tsfarber
Date:
Tue Nov 26 04:12:46 2019 +0000
Revision:
74:26717338739d
Parent:
1:8aa5cdb4ab67 
This program combines samples programs radio TX and radio RX so that both units can send or receive depending on which unit's buttons are pressed. Tested successfully. MicroBitConfig.h has been edited to disable BLE.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Jonathan Austin 1:8aa5cdb4ab67 1 /*
Jonathan Austin 1:8aa5cdb4ab67 2 The MIT License (MIT)
Jonathan Austin 1:8aa5cdb4ab67 3
Jonathan Austin 1:8aa5cdb4ab67 4 Copyright (c) 2016 British Broadcasting Corporation.
Jonathan Austin 1:8aa5cdb4ab67 5 This software is provided by Lancaster University by arrangement with the BBC.
Jonathan Austin 1:8aa5cdb4ab67 6
Jonathan Austin 1:8aa5cdb4ab67 7 Permission is hereby granted, free of charge, to any person obtaining a
Jonathan Austin 1:8aa5cdb4ab67 8 copy of this software and associated documentation files (the "Software"),
Jonathan Austin 1:8aa5cdb4ab67 9 to deal in the Software without restriction, including without limitation
Jonathan Austin 1:8aa5cdb4ab67 10 the rights to use, copy, modify, merge, publish, distribute, sublicense,
Jonathan Austin 1:8aa5cdb4ab67 11 and/or sell copies of the Software, and to permit persons to whom the
Jonathan Austin 1:8aa5cdb4ab67 12 Software is furnished to do so, subject to the following conditions:
Jonathan Austin 1:8aa5cdb4ab67 13
Jonathan Austin 1:8aa5cdb4ab67 14 The above copyright notice and this permission notice shall be included in
Jonathan Austin 1:8aa5cdb4ab67 15 all copies or substantial portions of the Software.
Jonathan Austin 1:8aa5cdb4ab67 16
Jonathan Austin 1:8aa5cdb4ab67 17 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Jonathan Austin 1:8aa5cdb4ab67 18 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Jonathan Austin 1:8aa5cdb4ab67 19 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
Jonathan Austin 1:8aa5cdb4ab67 20 THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 21 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
Jonathan Austin 1:8aa5cdb4ab67 22 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
Jonathan Austin 1:8aa5cdb4ab67 23 DEALINGS IN THE SOFTWARE.
Jonathan Austin 1:8aa5cdb4ab67 24 */
Jonathan Austin 1:8aa5cdb4ab67 25
Jonathan Austin 1:8aa5cdb4ab67 26 /**
Jonathan Austin 1:8aa5cdb4ab67 27 * Class definition for the custom MicroBit Accelerometer Service.
Jonathan Austin 1:8aa5cdb4ab67 28 * Provides a BLE service to remotely read the state of the accelerometer, and configure its behaviour.
Jonathan Austin 1:8aa5cdb4ab67 29 */
Jonathan Austin 1:8aa5cdb4ab67 30 #include "MicroBitConfig.h"
Jonathan Austin 1:8aa5cdb4ab67 31 #include "ble/UUID.h"
Jonathan Austin 1:8aa5cdb4ab67 32
Jonathan Austin 1:8aa5cdb4ab67 33 #include "MicroBitAccelerometerService.h"
Jonathan Austin 1:8aa5cdb4ab67 34
Jonathan Austin 1:8aa5cdb4ab67 35 /**
Jonathan Austin 1:8aa5cdb4ab67 36 * Constructor.
Jonathan Austin 1:8aa5cdb4ab67 37 * Create a representation of the AccelerometerService
Jonathan Austin 1:8aa5cdb4ab67 38 * @param _ble The instance of a BLE device that we're running on.
Jonathan Austin 1:8aa5cdb4ab67 39 * @param _accelerometer An instance of MicroBitAccelerometer.
Jonathan Austin 1:8aa5cdb4ab67 40 */
Jonathan Austin 1:8aa5cdb4ab67 41 MicroBitAccelerometerService::MicroBitAccelerometerService(BLEDevice &_ble, MicroBitAccelerometer &_accelerometer) :
Jonathan Austin 1:8aa5cdb4ab67 42 ble(_ble), accelerometer(_accelerometer)
Jonathan Austin 1:8aa5cdb4ab67 43 {
Jonathan Austin 1:8aa5cdb4ab67 44 // Create the data structures that represent each of our characteristics in Soft Device.
Jonathan Austin 1:8aa5cdb4ab67 45 GattCharacteristic accelerometerDataCharacteristic(MicroBitAccelerometerServiceDataUUID, (uint8_t *)accelerometerDataCharacteristicBuffer, 0,
Jonathan Austin 1:8aa5cdb4ab67 46 sizeof(accelerometerDataCharacteristicBuffer), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
Jonathan Austin 1:8aa5cdb4ab67 47
Jonathan Austin 1:8aa5cdb4ab67 48 GattCharacteristic accelerometerPeriodCharacteristic(MicroBitAccelerometerServicePeriodUUID, (uint8_t *)&accelerometerPeriodCharacteristicBuffer, 0,
Jonathan Austin 1:8aa5cdb4ab67 49 sizeof(accelerometerPeriodCharacteristicBuffer),
Jonathan Austin 1:8aa5cdb4ab67 50 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE);
Jonathan Austin 1:8aa5cdb4ab67 51
Jonathan Austin 1:8aa5cdb4ab67 52 // Initialise our characteristic values.
Jonathan Austin 1:8aa5cdb4ab67 53 accelerometerDataCharacteristicBuffer[0] = 0;
Jonathan Austin 1:8aa5cdb4ab67 54 accelerometerDataCharacteristicBuffer[1] = 0;
Jonathan Austin 1:8aa5cdb4ab67 55 accelerometerDataCharacteristicBuffer[2] = 0;
Jonathan Austin 1:8aa5cdb4ab67 56 accelerometerPeriodCharacteristicBuffer = accelerometer.getPeriod();
Jonathan Austin 1:8aa5cdb4ab67 57
Jonathan Austin 1:8aa5cdb4ab67 58 // Set default security requirements
Jonathan Austin 1:8aa5cdb4ab67 59 accelerometerDataCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
Jonathan Austin 1:8aa5cdb4ab67 60 accelerometerPeriodCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL);
Jonathan Austin 1:8aa5cdb4ab67 61
Jonathan Austin 1:8aa5cdb4ab67 62 GattCharacteristic *characteristics[] = {&accelerometerDataCharacteristic, &accelerometerPeriodCharacteristic};
Jonathan Austin 1:8aa5cdb4ab67 63 GattService service(MicroBitAccelerometerServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *));
Jonathan Austin 1:8aa5cdb4ab67 64
Jonathan Austin 1:8aa5cdb4ab67 65 ble.addService(service);
Jonathan Austin 1:8aa5cdb4ab67 66
Jonathan Austin 1:8aa5cdb4ab67 67 accelerometerDataCharacteristicHandle = accelerometerDataCharacteristic.getValueHandle();
Jonathan Austin 1:8aa5cdb4ab67 68 accelerometerPeriodCharacteristicHandle = accelerometerPeriodCharacteristic.getValueHandle();
Jonathan Austin 1:8aa5cdb4ab67 69
Jonathan Austin 1:8aa5cdb4ab67 70 ble.gattServer().write(accelerometerDataCharacteristicHandle,(uint8_t *)accelerometerDataCharacteristicBuffer, sizeof(accelerometerDataCharacteristicBuffer));
Jonathan Austin 1:8aa5cdb4ab67 71 ble.gattServer().write(accelerometerPeriodCharacteristicHandle, (const uint8_t *)&accelerometerPeriodCharacteristicBuffer, sizeof(accelerometerPeriodCharacteristicBuffer));
Jonathan Austin 1:8aa5cdb4ab67 72
Jonathan Austin 1:8aa5cdb4ab67 73 ble.onDataWritten(this, &MicroBitAccelerometerService::onDataWritten);
Jonathan Austin 1:8aa5cdb4ab67 74
Jonathan Austin 1:8aa5cdb4ab67 75 if (EventModel::defaultEventBus)
Jonathan Austin 1:8aa5cdb4ab67 76 EventModel::defaultEventBus->listen(MICROBIT_ID_ACCELEROMETER, MICROBIT_ACCELEROMETER_EVT_DATA_UPDATE, this, &MicroBitAccelerometerService::accelerometerUpdate, MESSAGE_BUS_LISTENER_IMMEDIATE);
Jonathan Austin 1:8aa5cdb4ab67 77 }
Jonathan Austin 1:8aa5cdb4ab67 78
Jonathan Austin 1:8aa5cdb4ab67 79 /**
Jonathan Austin 1:8aa5cdb4ab67 80 * Callback. Invoked when any of our attributes are written via BLE.
Jonathan Austin 1:8aa5cdb4ab67 81 */
Jonathan Austin 1:8aa5cdb4ab67 82 void MicroBitAccelerometerService::onDataWritten(const GattWriteCallbackParams *params)
Jonathan Austin 1:8aa5cdb4ab67 83 {
Jonathan Austin 1:8aa5cdb4ab67 84 if (params->handle == accelerometerPeriodCharacteristicHandle && params->len >= sizeof(accelerometerPeriodCharacteristicBuffer))
Jonathan Austin 1:8aa5cdb4ab67 85 {
Jonathan Austin 1:8aa5cdb4ab67 86 accelerometerPeriodCharacteristicBuffer = *((uint16_t *)params->data);
Jonathan Austin 1:8aa5cdb4ab67 87 accelerometer.setPeriod(accelerometerPeriodCharacteristicBuffer);
Jonathan Austin 1:8aa5cdb4ab67 88
Jonathan Austin 1:8aa5cdb4ab67 89 // The accelerometer will choose the nearest period to that requested that it can support
Jonathan Austin 1:8aa5cdb4ab67 90 // Read back the ACTUAL period it is using, and report this back.
Jonathan Austin 1:8aa5cdb4ab67 91 accelerometerPeriodCharacteristicBuffer = accelerometer.getPeriod();
Jonathan Austin 1:8aa5cdb4ab67 92 ble.gattServer().write(accelerometerPeriodCharacteristicHandle, (const uint8_t *)&accelerometerPeriodCharacteristicBuffer, sizeof(accelerometerPeriodCharacteristicBuffer));
Jonathan Austin 1:8aa5cdb4ab67 93 }
Jonathan Austin 1:8aa5cdb4ab67 94 }
Jonathan Austin 1:8aa5cdb4ab67 95
Jonathan Austin 1:8aa5cdb4ab67 96 /**
Jonathan Austin 1:8aa5cdb4ab67 97 * Accelerometer update callback
Jonathan Austin 1:8aa5cdb4ab67 98 */
Jonathan Austin 1:8aa5cdb4ab67 99 void MicroBitAccelerometerService::accelerometerUpdate(MicroBitEvent)
Jonathan Austin 1:8aa5cdb4ab67 100 {
Jonathan Austin 1:8aa5cdb4ab67 101 if (ble.getGapState().connected)
Jonathan Austin 1:8aa5cdb4ab67 102 {
Jonathan Austin 1:8aa5cdb4ab67 103 accelerometerDataCharacteristicBuffer[0] = accelerometer.getX();
Jonathan Austin 1:8aa5cdb4ab67 104 accelerometerDataCharacteristicBuffer[1] = accelerometer.getY();
Jonathan Austin 1:8aa5cdb4ab67 105 accelerometerDataCharacteristicBuffer[2] = accelerometer.getZ();
Jonathan Austin 1:8aa5cdb4ab67 106
Jonathan Austin 1:8aa5cdb4ab67 107 ble.gattServer().notify(accelerometerDataCharacteristicHandle,(uint8_t *)accelerometerDataCharacteristicBuffer, sizeof(accelerometerDataCharacteristicBuffer));
Jonathan Austin 1:8aa5cdb4ab67 108 }
Jonathan Austin 1:8aa5cdb4ab67 109 }
Jonathan Austin 1:8aa5cdb4ab67 110
Jonathan Austin 1:8aa5cdb4ab67 111 const uint8_t MicroBitAccelerometerServiceUUID[] = {
Jonathan Austin 1:8aa5cdb4ab67 112 0xe9,0x5d,0x07,0x53,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8
Jonathan Austin 1:8aa5cdb4ab67 113 };
Jonathan Austin 1:8aa5cdb4ab67 114
Jonathan Austin 1:8aa5cdb4ab67 115 const uint8_t MicroBitAccelerometerServiceDataUUID[] = {
Jonathan Austin 1:8aa5cdb4ab67 116 0xe9,0x5d,0xca,0x4b,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8
Jonathan Austin 1:8aa5cdb4ab67 117 };
Jonathan Austin 1:8aa5cdb4ab67 118
Jonathan Austin 1:8aa5cdb4ab67 119 const uint8_t MicroBitAccelerometerServicePeriodUUID[] = {
Jonathan Austin 1:8aa5cdb4ab67 120 0xe9,0x5d,0xfb,0x24,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8
Jonathan Austin 1:8aa5cdb4ab67 121 };