Diff: ble/services/HealthThermometerService.h

Revision:

1209:e3d4f8c7787b

Parent:

1208:65474dc93927

diff -r 65474dc93927 -r e3d4f8c7787b ble/services/HealthThermometerService.h
--- a/ble/services/HealthThermometerService.h	Wed Sep 14 14:18:00 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,150 +0,0 @@
-/* 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_HEALTH_THERMOMETER_SERVICE_H__
-#define __BLE_HEALTH_THERMOMETER_SERVICE_H__
-
-#include "ble/BLE.h"
-
-/**
-* @class HealthThermometerService
-* @brief BLE Health Thermometer Service. This service provides the location of the thermometer and the temperature.
-* Service:  https://developer.bluetooth.org/gatt/profiles/Pages/ProfileViewer.aspx?u=org.bluetooth.profile.health_thermometer.xml
-* Temperature Measurement: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.temperature_measurement.xml
-* Temperature Type: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.temperature_type.xml
-*/
-class HealthThermometerService {
-public:
-    /**
-    * @enum Sensor Location.
-    * @brief Location of sensor on the body.
-    */
-    enum SensorLocation_t {
-        LOCATION_ARMPIT = 1,    /*!< Armpit. */
-        LOCATION_BODY,          /*!< Body. */
-        LOCATION_EAR,           /*!< Ear. */
-        LOCATION_FINGER,        /*!< Finger. */
-        LOCATION_GI_TRACT,      /*!< GI tract */
-        LOCATION_MOUTH,         /*!< Mouth. */
-        LOCATION_RECTUM,        /*!< Rectum. */
-        LOCATION_TOE,           /*!< Toe. */
-        LOCATION_EAR_DRUM,      /*!< Eardrum. */
-    };
-
-public:
-    /**
-     * @brief Add the Health Thermometer Service to an existing BLE object, initialize with temperature and location.
-     * @param[ref] _ble         Reference to the BLE device.
-     * @param[in] initialTemp  Initial value in celsius.
-     * @param[in] _location
-     */
-    HealthThermometerService(BLE &_ble, float initialTemp, uint8_t _location) :
-        ble(_ble),
-        valueBytes(initialTemp),
-        tempMeasurement(GattCharacteristic::UUID_TEMPERATURE_MEASUREMENT_CHAR, (TemperatureValueBytes *)valueBytes.getPointer(), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY),
-        tempLocation(GattCharacteristic::UUID_TEMPERATURE_TYPE_CHAR, &_location) {
-
-        GattCharacteristic *hrmChars[] = {&tempMeasurement, &tempLocation, };
-        GattService         hrmService(GattService::UUID_HEALTH_THERMOMETER_SERVICE, hrmChars, sizeof(hrmChars) / sizeof(GattCharacteristic *));
-
-        ble.addService(hrmService);
-    }
-
-    /**
-    * @brief Update the temperature being broadcast.
-    *
-    * @param[in] temperature
-    *                   Floating point value of the temperature.
-    *
-    */
-    void updateTemperature(float temperature) {
-        if (ble.getGapState().connected) {
-            valueBytes.updateTemperature(temperature);
-            ble.gattServer().write(tempMeasurement.getValueHandle(), valueBytes.getPointer(), sizeof(TemperatureValueBytes));
-        }
-    }
-
-    /**
-     * @brief Update the location.
-     * @param loc
-     *        New location value.
-     */
-    void updateLocation(SensorLocation_t loc) {
-        ble.gattServer().write(tempLocation.getValueHandle(), reinterpret_cast<uint8_t *>(&loc), sizeof(uint8_t));
-    }
-
-private:
-    /* Private internal representation for the bytes used to work with the vaulue of the temperature characteristic. */
-    struct TemperatureValueBytes {
-        static const unsigned OFFSET_OF_FLAGS    = 0;
-        static const unsigned OFFSET_OF_VALUE    = OFFSET_OF_FLAGS + sizeof(uint8_t);
-        static const unsigned SIZEOF_VALUE_BYTES = sizeof(uint8_t) + sizeof(float);
-
-        static const unsigned TEMPERATURE_UNITS_FLAG_POS = 0;
-        static const unsigned TIMESTAMP_FLAG_POS         = 1;
-        static const unsigned TEMPERATURE_TYPE_FLAG_POS  = 2;
-
-        static const uint8_t  TEMPERATURE_UNITS_CELSIUS    = 0;
-        static const uint8_t  TEMPERATURE_UNITS_FAHRENHEIT = 1;
-
-        TemperatureValueBytes(float initialTemperature) : bytes() {
-            /* Assumption: temperature values are expressed in celsius */
-            bytes[OFFSET_OF_FLAGS] =  (TEMPERATURE_UNITS_CELSIUS << TEMPERATURE_UNITS_FLAG_POS) |
-                                      (false << TIMESTAMP_FLAG_POS) |
-                                      (false << TEMPERATURE_TYPE_FLAG_POS);
-            updateTemperature(initialTemperature);
-        }
-
-        void updateTemperature(float temp) {
-            uint32_t temp_ieee11073 = quick_ieee11073_from_float(temp);
-            memcpy(&bytes[OFFSET_OF_VALUE], &temp_ieee11073, sizeof(float));
-        }
-
-        uint8_t       *getPointer(void) {
-            return bytes;
-        }
-
-        const uint8_t *getPointer(void) const {
-            return bytes;
-        }
-
-private:
-        /**
-         * @brief A very quick conversion between a float temperature and 11073-20601 FLOAT-Type.
-         * @param temperature The temperature as a float.
-         * @return The temperature in 11073-20601 FLOAT-Type format.
-         */
-        uint32_t quick_ieee11073_from_float(float temperature) {
-            uint8_t  exponent = 0xFE; //Exponent is -2
-            uint32_t mantissa = (uint32_t)(temperature * 100);
-
-            return (((uint32_t)exponent) << 24) | mantissa;
-        }
-
-private:
-        /* First byte: 8-bit flags. Second field is a float holding the temperature value. */
-        /* See https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.temperature_measurement.xml */
-        uint8_t bytes[SIZEOF_VALUE_BYTES];
-    };
-
-protected:
-    BLE                                               &ble;
-    TemperatureValueBytes                              valueBytes;
-    ReadOnlyGattCharacteristic<TemperatureValueBytes>  tempMeasurement;
-    ReadOnlyGattCharacteristic<uint8_t>                tempLocation;
-};
-
-#endif /* #ifndef __BLE_HEALTH_THERMOMETER_SERVICE_H__*/
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