BLE lib
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Diff: services/BatteryService.h
- Revision:
- 0:289fd2dae405
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/services/BatteryService.h Fri Dec 19 18:54:46 2014 +0000 @@ -0,0 +1,61 @@ +/* mbed Microcontroller Library + * Copyright (c) 2006-2013 ARM Limited + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __BLE_BATTERY_SERVICE_H__ +#define __BLE_BATTERY_SERVICE_H__ + +#include "BLEDevice.h" + +/* Battery Service */ +/* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.battery_service.xml */ +/* Battery Level Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.battery_level.xml */ +class BatteryService { +public: + BatteryService(BLEDevice &_ble, uint8_t level = 100) : + ble(_ble), + batteryLevel(level), + batteryLevelCharacteristic(GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, &batteryLevel, sizeof(batteryLevel), sizeof(batteryLevel), + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY) { + + static bool serviceAdded = false; /* We should only ever need to add the heart rate service once. */ + if (serviceAdded) { + return; + } + + GattCharacteristic *charTable[] = {&batteryLevelCharacteristic}; + GattService batteryService(GattService::UUID_BATTERY_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *)); + + ble.addService(batteryService); + serviceAdded = true; + } + + /** + * Update the battery level with a new value. Valid values range from + * 0..100. Anything outside this range will be ignored. + * @param newLevel New level. + */ + void updateBatteryLevel(uint8_t newLevel) { + batteryLevel = newLevel; + ble.updateCharacteristicValue(batteryLevelCharacteristic.getValueAttribute().getHandle(), &batteryLevel, 1); + } + +private: + BLEDevice &ble; + uint8_t batteryLevel; + GattCharacteristic batteryLevelCharacteristic; +}; + +#endif /* #ifndef __BLE_BATTERY_SERVICE_H__*/