Thomas Butler
fsdfds
Dependencies: BLE_API mbed-dev-bin nRF51822
Fork of
microbit-dal
by 
Lancaster University
source/bluetooth/MicroBitTemperatureService.cpp@75:b02b061aed24, 2018-08-14 (annotated)
- Committer:
- tb942
- Date:
- Tue Aug 14 18:30:43 2018 +0000
- Revision:
- 75:b02b061aed24
- Parent:
- 1:8aa5cdb4ab67
Who changed what in which revision?
| User | Revision | Line number | New 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 Temperature Service. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 28 | * Provides a BLE service to remotely read the silicon temperature of the nRF51822. |
| 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 "MicroBitTemperatureService.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 TemperatureService |
| Jonathan Austin |
1:8aa5cdb4ab67 | 38 | * @param _ble The instance of a BLE device that we're running on. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 39 | * @param _thermometer An instance of MicroBitThermometer to use as our temperature source. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 40 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 41 | MicroBitTemperatureService::MicroBitTemperatureService(BLEDevice &_ble, MicroBitThermometer &_thermometer) : |
| Jonathan Austin |
1:8aa5cdb4ab67 | 42 | ble(_ble), thermometer(_thermometer) |
| 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 temperatureDataCharacteristic(MicroBitTemperatureServiceDataUUID, (uint8_t *)&temperatureDataCharacteristicBuffer, 0, |
| Jonathan Austin |
1:8aa5cdb4ab67 | 46 | sizeof(temperatureDataCharacteristicBuffer), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 47 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 48 | GattCharacteristic temperaturePeriodCharacteristic(MicroBitTemperatureServicePeriodUUID, (uint8_t *)&temperaturePeriodCharacteristicBuffer, 0, |
| Jonathan Austin |
1:8aa5cdb4ab67 | 49 | sizeof(temperaturePeriodCharacteristicBuffer), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_WRITE); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 50 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 51 | // Initialise our characteristic values. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 52 | temperatureDataCharacteristicBuffer = 0; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 53 | temperaturePeriodCharacteristicBuffer = thermometer.getPeriod(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 54 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 55 | // Set default security requirements |
| Jonathan Austin |
1:8aa5cdb4ab67 | 56 | temperatureDataCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 57 | temperaturePeriodCharacteristic.requireSecurity(SecurityManager::MICROBIT_BLE_SECURITY_LEVEL); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 58 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 59 | GattCharacteristic *characteristics[] = {&temperatureDataCharacteristic, &temperaturePeriodCharacteristic}; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 60 | GattService service(MicroBitTemperatureServiceUUID, characteristics, sizeof(characteristics) / sizeof(GattCharacteristic *)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 61 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 62 | ble.addService(service); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 63 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 64 | temperatureDataCharacteristicHandle = temperatureDataCharacteristic.getValueHandle(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 65 | temperaturePeriodCharacteristicHandle = temperaturePeriodCharacteristic.getValueHandle(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 66 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 67 | ble.gattServer().write(temperatureDataCharacteristicHandle,(uint8_t *)&temperatureDataCharacteristicBuffer, sizeof(temperatureDataCharacteristicBuffer)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 68 | ble.gattServer().write(temperaturePeriodCharacteristicHandle,(uint8_t *)&temperaturePeriodCharacteristicBuffer, sizeof(temperaturePeriodCharacteristicBuffer)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 69 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 70 | ble.onDataWritten(this, &MicroBitTemperatureService::onDataWritten); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 71 | if (EventModel::defaultEventBus) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 72 | EventModel::defaultEventBus->listen(MICROBIT_ID_THERMOMETER, MICROBIT_THERMOMETER_EVT_UPDATE, this, &MicroBitTemperatureService::temperatureUpdate, MESSAGE_BUS_LISTENER_IMMEDIATE); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 73 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 74 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 75 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 76 | * Temperature update callback |
| Jonathan Austin |
1:8aa5cdb4ab67 | 77 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 78 | void MicroBitTemperatureService::temperatureUpdate(MicroBitEvent) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 79 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 80 | if (ble.getGapState().connected) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 81 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 82 | temperatureDataCharacteristicBuffer = thermometer.getTemperature(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 83 | ble.gattServer().notify(temperatureDataCharacteristicHandle,(uint8_t *)&temperatureDataCharacteristicBuffer, sizeof(temperatureDataCharacteristicBuffer)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 84 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 85 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 86 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 87 | /** |
| Jonathan Austin |
1:8aa5cdb4ab67 | 88 | * Callback. Invoked when any of our attributes are written via BLE. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 89 | */ |
| Jonathan Austin |
1:8aa5cdb4ab67 | 90 | void MicroBitTemperatureService::onDataWritten(const GattWriteCallbackParams *params) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 91 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 92 | if (params->handle == temperaturePeriodCharacteristicHandle && params->len >= sizeof(temperaturePeriodCharacteristicBuffer)) |
| Jonathan Austin |
1:8aa5cdb4ab67 | 93 | { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 94 | temperaturePeriodCharacteristicBuffer = *((uint16_t *)params->data); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 95 | thermometer.setPeriod(temperaturePeriodCharacteristicBuffer); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 96 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 97 | // The accelerometer will choose the nearest period to that requested that it can support |
| Jonathan Austin |
1:8aa5cdb4ab67 | 98 | // Read back the ACTUAL period it is using, and report this back. |
| Jonathan Austin |
1:8aa5cdb4ab67 | 99 | temperaturePeriodCharacteristicBuffer = thermometer.getPeriod(); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 100 | ble.gattServer().write(temperaturePeriodCharacteristicHandle, (const uint8_t *)&temperaturePeriodCharacteristicBuffer, sizeof(temperaturePeriodCharacteristicBuffer)); |
| Jonathan Austin |
1:8aa5cdb4ab67 | 101 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 102 | } |
| Jonathan Austin |
1:8aa5cdb4ab67 | 103 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 104 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 105 | const uint8_t MicroBitTemperatureServiceUUID[] = { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 106 | 0xe9,0x5d,0x61,0x00,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8 |
| Jonathan Austin |
1:8aa5cdb4ab67 | 107 | }; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 108 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 109 | const uint8_t MicroBitTemperatureServiceDataUUID[] = { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 110 | 0xe9,0x5d,0x92,0x50,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8 |
| Jonathan Austin |
1:8aa5cdb4ab67 | 111 | }; |
| Jonathan Austin |
1:8aa5cdb4ab67 | 112 | |
| Jonathan Austin |
1:8aa5cdb4ab67 | 113 | const uint8_t MicroBitTemperatureServicePeriodUUID[] = { |
| Jonathan Austin |
1:8aa5cdb4ab67 | 114 | 0xe9,0x5d,0x1b,0x25,0x25,0x1d,0x47,0x0a,0xa0,0x62,0xfa,0x19,0x22,0xdf,0xa9,0xa8 |
| Jonathan Austin |
1:8aa5cdb4ab67 | 115 | }; |