Diff: ble/services/HeartRateService.h

Revision:

1209:e3d4f8c7787b

Parent:

1208:65474dc93927

--- a/ble/services/HeartRateService.h	Wed Sep 14 14:18:00 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,194 +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_HEART_RATE_SERVICE_H__
-#define __BLE_HEART_RATE_SERVICE_H__
-
-#include "ble/BLE.h"
-
-/**
-* @class HeartRateService
-* @brief BLE Service for HeartRate. This BLE Service contains the location of the sensor and the heart rate in beats per minute.
-* Service:  https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml
-* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml
-* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml
-*/
-class HeartRateService {
-public:
-    /**
-    * @enum SensorLocation
-    * @brief Location of the heart rate sensor on body.
-    */
-    enum {
-        LOCATION_OTHER = 0, /*!< Other location. */
-        LOCATION_CHEST,     /*!< Chest. */
-        LOCATION_WRIST,     /*!< Wrist. */
-        LOCATION_FINGER,    /*!< Finger. */
-        LOCATION_HAND,      /*!< Hand. */
-        LOCATION_EAR_LOBE,  /*!< Earlobe. */
-        LOCATION_FOOT,      /*!< Foot. */
-    };
-
-public:
-    /**
-     * @brief Constructor with 8-bit HRM Counter value.
-     *
-     * @param[ref] _ble
-     *               Reference to the underlying BLE.
-     * @param[in] hrmCounter (8-bit)
-     *               Initial value for the HRM counter.
-     * @param[in] location
-     *               Sensor's location.
-     */
-    HeartRateService(BLE &_ble, uint8_t hrmCounter, uint8_t location) :
-        ble(_ble),
-        valueBytes(hrmCounter),
-        hrmRate(GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, valueBytes.getPointer(),
-                valueBytes.getNumValueBytes(), HeartRateValueBytes::MAX_VALUE_BYTES,
-                GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY),
-        hrmLocation(GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, &location),
-        controlPoint(GattCharacteristic::UUID_HEART_RATE_CONTROL_POINT_CHAR, &controlPointValue) {
-        setupService();
-    }
-
-    /**
-     * @brief Constructor with a 16-bit HRM Counter value.
-     *
-     * @param[in] _ble
-     *               Reference to the underlying BLE.
-     * @param[in] hrmCounter (8-bit)
-     *               Initial value for the HRM counter.
-     * @param[in] location
-     *               Sensor's location.
-     */
-    HeartRateService(BLE &_ble, uint16_t hrmCounter, uint8_t location) :
-        ble(_ble),
-        valueBytes(hrmCounter),
-        hrmRate(GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, valueBytes.getPointer(),
-                valueBytes.getNumValueBytes(), HeartRateValueBytes::MAX_VALUE_BYTES,
-                GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY),
-        hrmLocation(GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, &location),
-        controlPoint(GattCharacteristic::UUID_HEART_RATE_CONTROL_POINT_CHAR, &controlPointValue) {
-        setupService();
-    }
-
-    /**
-     * @brief Set a new 8-bit value for the heart rate.
-     *
-     * @param[in] hrmCounter
-     *                  Heart rate in BPM.
-     */
-    void updateHeartRate(uint8_t hrmCounter) {
-        valueBytes.updateHeartRate(hrmCounter);
-        ble.gattServer().write(hrmRate.getValueHandle(), valueBytes.getPointer(), valueBytes.getNumValueBytes());
-    }
-
-    /**
-     * Set a new 16-bit value for the heart rate.
-     *
-     * @param[in] hrmCounter
-     *                  Heart rate in BPM.
-     */
-    void updateHeartRate(uint16_t hrmCounter) {
-        valueBytes.updateHeartRate(hrmCounter);
-        ble.gattServer().write(hrmRate.getValueHandle(), valueBytes.getPointer(), valueBytes.getNumValueBytes());
-    }
-
-    /**
-     * This callback allows the heart rate service to receive updates to the
-     * controlPoint characteristic.
-     *
-     * @param[in] params
-     *     Information about the characterisitc being updated.
-     */
-    virtual void onDataWritten(const GattWriteCallbackParams *params) {
-        if (params->handle == controlPoint.getValueAttribute().getHandle()) {
-            /* Do something here if the new value is 1; else you can override this method by
-             * extending this class.
-             * @NOTE: If you are extending this class, be sure to also call
-             * ble.onDataWritten(this, &ExtendedHRService::onDataWritten); in
-             * your constructor.
-             */
-        }
-    }
-
-protected:
-    void setupService(void) {
-        GattCharacteristic *charTable[] = {&hrmRate, &hrmLocation, &controlPoint};
-        GattService         hrmService(GattService::UUID_HEART_RATE_SERVICE, charTable, sizeof(charTable) / sizeof(GattCharacteristic *));
-
-        ble.addService(hrmService);
-        ble.onDataWritten(this, &HeartRateService::onDataWritten);
-    }
-
-protected:
-    /* Private internal representation for the bytes used to work with the value of the heart rate characteristic. */
-    struct HeartRateValueBytes {
-        static const unsigned MAX_VALUE_BYTES  = 3; /* Flags, and up to two bytes for heart rate. */
-        static const unsigned FLAGS_BYTE_INDEX = 0;
-
-        static const unsigned VALUE_FORMAT_BITNUM = 0;
-        static const uint8_t  VALUE_FORMAT_FLAG   = (1 << VALUE_FORMAT_BITNUM);
-
-        HeartRateValueBytes(uint8_t hrmCounter) : valueBytes() {
-            updateHeartRate(hrmCounter);
-        }
-
-        HeartRateValueBytes(uint16_t hrmCounter) : valueBytes() {
-            updateHeartRate(hrmCounter);
-        }
-
-        void updateHeartRate(uint8_t hrmCounter) {
-            valueBytes[FLAGS_BYTE_INDEX]    &= ~VALUE_FORMAT_FLAG;
-            valueBytes[FLAGS_BYTE_INDEX + 1] = hrmCounter;
-        }
-
-        void updateHeartRate(uint16_t hrmCounter) {
-            valueBytes[FLAGS_BYTE_INDEX]    |= VALUE_FORMAT_FLAG;
-            valueBytes[FLAGS_BYTE_INDEX + 1] = (uint8_t)(hrmCounter & 0xFF);
-            valueBytes[FLAGS_BYTE_INDEX + 2] = (uint8_t)(hrmCounter >> 8);
-        }
-
-        uint8_t       *getPointer(void) {
-            return valueBytes;
-        }
-
-        const uint8_t *getPointer(void) const {
-            return valueBytes;
-        }
-
-        unsigned       getNumValueBytes(void) const {
-            return 1 + ((valueBytes[FLAGS_BYTE_INDEX] & VALUE_FORMAT_FLAG) ? sizeof(uint16_t) : sizeof(uint8_t));
-        }
-
-    private:
-        /* First byte: 8-bit values, no extra info. Second byte: uint8_t HRM value */
-        /* See https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
-        uint8_t valueBytes[MAX_VALUE_BYTES];
-    };
-
-protected:
-    BLE                 &ble;
-
-    HeartRateValueBytes  valueBytes;
-    uint8_t              controlPointValue;
-
-    GattCharacteristic                   hrmRate;
-    ReadOnlyGattCharacteristic<uint8_t>  hrmLocation;
-    WriteOnlyGattCharacteristic<uint8_t> controlPoint;
-};
-
-#endif /* #ifndef __BLE_HEART_RATE_SERVICE_H__*/
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