Rohit Grover
8 years ago
commit
9c001d2772
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# Hello!
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We are an open source project of [ARM mbed](www.mbed.com). Contributions via [pull request](https://github.com/armmbed/yotta/pulls), and [bug reports](https://github.com/armmbed/yotta/issues) are welcome!
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Please submit your pull request to the 'develop' branch of this module. Commits to develop will merge into master at the time of the next release.
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# Contributor agreement
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For your pull request to be accepted, we will need you to agree to our [contributor agreement](http://developer.mbed.org/contributor_agreement/) to give us the necessary rights to use and distribute your contributions. (To click through the agreement create an account on mbed.com and log in.)
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@ -0,0 +1,106 @@
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2013 ARM Limited
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __BLE_ENVIRONMENTAL_SERVICE_H__
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#define __BLE_ENVIRONMENTAL_SERVICE_H__
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#include "ble/BLE.h"
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/**
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* @class EnvironmentalService
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* @brief BLE Environmental Service. This service provides the location of the thermometer and the temperature. <br>
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* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.environmental_sensing.xml <br>
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* Temperature: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.temperature.xml <br>
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* Humidity: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.humidity.xml <br>
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* Pressure: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.pressure.xml
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*/
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class EnvironmentalService {
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public:
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typedef int16_t TemperatureType_t;
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typedef uint16_t HumidityType_t;
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typedef uint32_t PressureType_t;
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/**
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* @brief EnvironmentalService constructor.
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* @param ble Reference to BLE device.
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* @param temperature_en Enable this characteristic.
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* @param humidity_en Enable this characteristic.
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* @param pressure_en Enable this characteristic.
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*/
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EnvironmentalService(BLE& _ble) :
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ble(_ble),
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temperatureCharacteristic(GattCharacteristic::UUID_TEMPERATURE_CHAR, &temperature),
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humidityCharacteristic(GattCharacteristic::UUID_HUMIDITY_CHAR, &humidity),
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pressureCharacteristic(GattCharacteristic::UUID_PRESSURE_CHAR, &pressure)
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{
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static bool serviceAdded = false; /* We should only ever need to add the information service once. */
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if (serviceAdded) {
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return;
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}
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GattCharacteristic *charTable[] = { &humidityCharacteristic,
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&pressureCharacteristic,
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&temperatureCharacteristic };
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GattService environmentalService(GattService::UUID_ENVIRONMENTAL_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
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ble.gattServer().addService(environmentalService);
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serviceAdded = true;
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}
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/**
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* @brief Update humidity characteristic.
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* @param newHumidityVal New humidity measurement.
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*/
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void updateHumidity(HumidityType_t newHumidityVal)
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{
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humidity = (HumidityType_t) (newHumidityVal * 100);
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ble.gattServer().write(humidityCharacteristic.getValueHandle(), (uint8_t *) &humidity, sizeof(HumidityType_t));
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}
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/**
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* @brief Update pressure characteristic.
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* @param newPressureVal New pressure measurement.
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*/
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void updatePressure(PressureType_t newPressureVal)
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{
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pressure = (PressureType_t) (newPressureVal * 10);
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ble.gattServer().write(pressureCharacteristic.getValueHandle(), (uint8_t *) &pressure, sizeof(PressureType_t));
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}
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/**
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* @brief Update temperature characteristic.
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* @param newTemperatureVal New temperature measurement.
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*/
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void updateTemperature(float newTemperatureVal)
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{
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temperature = (TemperatureType_t) (newTemperatureVal * 100);
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ble.gattServer().write(temperatureCharacteristic.getValueHandle(), (uint8_t *) &temperature, sizeof(TemperatureType_t));
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}
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private:
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BLE& ble;
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TemperatureType_t temperature;
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HumidityType_t humidity;
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PressureType_t pressure;
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ReadOnlyGattCharacteristic<TemperatureType_t> temperatureCharacteristic;
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ReadOnlyGattCharacteristic<HumidityType_t> humidityCharacteristic;
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ReadOnlyGattCharacteristic<PressureType_t> pressureCharacteristic;
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};
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#endif /* #ifndef __BLE_ENVIRONMENTAL_SERVICE_H__*/
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