Delta / Mbed 2 deprecated BLE_Glucose_Demo

Demo Glucose Service

Dependencies:   BLE_API mbed nRF51822

Fork of BLE_HeartRate by Bluetooth Low Energy

BLE_Glucose_demo implements the Glucose Service which enables a collector device to connect and interact with.

There is a brief sample code edited with Android Studio for demo this BLE_Glucose_demo example, and it is public on github, everyone can clone it by this URL: https://github.com/Marcomissyou/BluetoothLeGlucose.git. It is convenient for you to development your BLE idea.

There is also provided apk file so you can download and install it directly then demo this code, but make sure your Android phone supports Bluetooth 4.0. /media/uploads/Marcomissyou/bleglucoseservice.apk

main.cpp@5:b0baff4a124f, 2014-05-29 (annotated)

Committer:
Rohit Grover
Date:
Thu May 29 09:58:58 2014 +0100
Revision:
5:b0baff4a124f
Parent:
4:12890f3c62eb
Child:
7:daab8ba5139e
use accessor methods to get handle for characteristics

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ktownsend 0:87a7fc231fae 1 /* mbed Microcontroller Library
ktownsend 0:87a7fc231fae 2 * Copyright (c) 2006-2013 ARM Limited
ktownsend 0:87a7fc231fae 3 *
ktownsend 0:87a7fc231fae 4 * Licensed under the Apache License, Version 2.0 (the "License");
ktownsend 0:87a7fc231fae 5 * you may not use this file except in compliance with the License.
ktownsend 0:87a7fc231fae 6 * You may obtain a copy of the License at
ktownsend 0:87a7fc231fae 7 *
ktownsend 0:87a7fc231fae 8 * http://www.apache.org/licenses/LICENSE-2.0
ktownsend 0:87a7fc231fae 9 *
ktownsend 0:87a7fc231fae 10 * Unless required by applicable law or agreed to in writing, software
ktownsend 0:87a7fc231fae 11 * distributed under the License is distributed on an "AS IS" BASIS,
ktownsend 0:87a7fc231fae 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ktownsend 0:87a7fc231fae 13 * See the License for the specific language governing permissions and
ktownsend 0:87a7fc231fae 14 * limitations under the License.
ktownsend 0:87a7fc231fae 15 */
ktownsend 0:87a7fc231fae 16
ktownsend 0:87a7fc231fae 17 #include "mbed.h"
ktownsend 0:87a7fc231fae 18 #include "nRF51822n.h"
ktownsend 0:87a7fc231fae 19
Rohit Grover 3:24e2b056d229 20 nRF51822n nrf; /* BLE radio driver */
ktownsend 0:87a7fc231fae 21
Rohit Grover 3:24e2b056d229 22 DigitalOut led1(LED1);
Rohit Grover 3:24e2b056d229 23 DigitalOut led2(LED2);
Rohit Grover 3:24e2b056d229 24 Ticker flipper;
Rohit Grover 3:24e2b056d229 25 Serial pc(USBTX, USBRX);
ktownsend 0:87a7fc231fae 26
ktownsend 0:87a7fc231fae 27 /* Battery Level Service */
Rohit Grover 3:24e2b056d229 28 uint8_t batt = 72; /* Battery level */
ktownsend 0:87a7fc231fae 29 uint8_t read_batt = 0; /* Variable to hold battery level reads */
Rohit Grover 3:24e2b056d229 30 GattService battService (GattService::UUID_BATTERY_SERVICE);
Rohit Grover 3:24e2b056d229 31 GattCharacteristic battLevel (GattCharacteristic::UUID_BATTERY_LEVEL_CHAR,
Rohit Grover 3:24e2b056d229 32 1,
Rohit Grover 3:24e2b056d229 33 1,
Rohit Grover 3:24e2b056d229 34 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY |
Rohit Grover 3:24e2b056d229 35 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 36
ktownsend 0:87a7fc231fae 37 /* Heart Rate Service */
ktownsend 0:87a7fc231fae 38 /* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */
ktownsend 0:87a7fc231fae 39 /* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:87a7fc231fae 40 /* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 3:24e2b056d229 41 GattService hrmService (GattService::UUID_HEART_RATE_SERVICE);
Rohit Grover 3:24e2b056d229 42 GattCharacteristic hrmRate (
Rohit Grover 3:24e2b056d229 43 GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR,
Rohit Grover 3:24e2b056d229 44 2,
Rohit Grover 3:24e2b056d229 45 3,
Rohit Grover 3:24e2b056d229 46 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
Rohit Grover 3:24e2b056d229 47 GattCharacteristic hrmLocation (
Rohit Grover 3:24e2b056d229 48 GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR,
Rohit Grover 3:24e2b056d229 49 1,
Rohit Grover 3:24e2b056d229 50 1,
Rohit Grover 3:24e2b056d229 51 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 52
ktownsend 0:87a7fc231fae 53 /* Device Information service */
Rohit Grover 3:24e2b056d229 54 uint8_t deviceName[4] = {'m', 'b', 'e', 'd'};
Rohit Grover 3:24e2b056d229 55 GattService deviceInformationService (
Rohit Grover 3:24e2b056d229 56 GattService::UUID_DEVICE_INFORMATION_SERVICE);
Rohit Grover 3:24e2b056d229 57 GattCharacteristic deviceManufacturer (
Rohit Grover 3:24e2b056d229 58 GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
Rohit Grover 3:24e2b056d229 59 sizeof(deviceName),
Rohit Grover 3:24e2b056d229 60 sizeof(deviceName),
Rohit Grover 3:24e2b056d229 61 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 62
ktownsend 0:87a7fc231fae 63 /* Advertising data and parameters */
Rohit Grover 3:24e2b056d229 64 GapAdvertisingData advData;
Rohit Grover 3:24e2b056d229 65 GapAdvertisingData scanResponse;
Rohit Grover 3:24e2b056d229 66 GapAdvertisingParams advParams (GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
Rohit Grover 3:24e2b056d229 67 uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE,
Rohit Grover 3:24e2b056d229 68 GattService::UUID_DEVICE_INFORMATION_SERVICE,
Rohit Grover 3:24e2b056d229 69 GattService::UUID_HEART_RATE_SERVICE};
ktownsend 0:87a7fc231fae 70
ktownsend 0:87a7fc231fae 71 void tickerCallback(void);
ktownsend 0:87a7fc231fae 72
ktownsend 0:87a7fc231fae 73 /**************************************************************************/
ktownsend 0:87a7fc231fae 74 /*!
ktownsend 0:87a7fc231fae 75 @brief This custom class can be used to override any GapEvents
ktownsend 0:87a7fc231fae 76 that you are interested in handling on an application level.
ktownsend 0:87a7fc231fae 77 */
ktownsend 0:87a7fc231fae 78 /**************************************************************************/
ktownsend 0:87a7fc231fae 79 class GapEventHandler : public GapEvents
ktownsend 0:87a7fc231fae 80 {
Rohit Grover 3:24e2b056d229 81 virtual void onTimeout(void)
ktownsend 0:87a7fc231fae 82 {
ktownsend 0:87a7fc231fae 83 pc.printf("Advertising Timeout!\n\r");
ktownsend 0:87a7fc231fae 84 // Restart the advertising process with a much slower interval,
ktownsend 0:87a7fc231fae 85 // only start advertising again after a button press, etc.
Rohit Grover 3:24e2b056d229 86 }
ktownsend 0:87a7fc231fae 87
ktownsend 0:87a7fc231fae 88 virtual void onConnected(void)
ktownsend 0:87a7fc231fae 89 {
ktownsend 0:87a7fc231fae 90 pc.printf("Connected!\n\r");
ktownsend 0:87a7fc231fae 91 }
ktownsend 0:87a7fc231fae 92
ktownsend 0:87a7fc231fae 93 virtual void onDisconnected(void)
ktownsend 0:87a7fc231fae 94 {
ktownsend 0:87a7fc231fae 95 pc.printf("Disconnected!\n\r");
ktownsend 0:87a7fc231fae 96 pc.printf("Restarting the advertising process\n\r");
ktownsend 0:87a7fc231fae 97 nrf.getGap().startAdvertising(advParams);
ktownsend 0:87a7fc231fae 98 }
ktownsend 0:87a7fc231fae 99 };
ktownsend 0:87a7fc231fae 100
ktownsend 0:87a7fc231fae 101 /**************************************************************************/
ktownsend 0:87a7fc231fae 102 /*!
ktownsend 0:87a7fc231fae 103 @brief This custom class can be used to override any GattServerEvents
ktownsend 0:87a7fc231fae 104 that you are interested in handling on an application level.
ktownsend 0:87a7fc231fae 105 */
ktownsend 0:87a7fc231fae 106 /**************************************************************************/
ktownsend 0:87a7fc231fae 107 class GattServerEventHandler : public GattServerEvents
ktownsend 0:87a7fc231fae 108 {
ktownsend 0:87a7fc231fae 109 //virtual void onDataSent(uint16_t charHandle) {}
ktownsend 0:87a7fc231fae 110 //virtual void onDataWritten(uint16_t charHandle) {}
Rohit Grover 3:24e2b056d229 111
ktownsend 0:87a7fc231fae 112 virtual void onUpdatesEnabled(uint16_t charHandle)
ktownsend 0:87a7fc231fae 113 {
Rohit Grover 5:b0baff4a124f 114 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 3:24e2b056d229 115 pc.printf("Heart rate notify enabled\n\r");
Rohit Grover 3:24e2b056d229 116 }
ktownsend 0:87a7fc231fae 117 }
ktownsend 0:87a7fc231fae 118
ktownsend 0:87a7fc231fae 119 virtual void onUpdatesDisabled(uint16_t charHandle)
ktownsend 0:87a7fc231fae 120 {
Rohit Grover 5:b0baff4a124f 121 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 3:24e2b056d229 122 pc.printf("Heart rate notify disabled\n\r");
Rohit Grover 3:24e2b056d229 123 }
ktownsend 0:87a7fc231fae 124 }
ktownsend 0:87a7fc231fae 125
ktownsend 0:87a7fc231fae 126 //virtual void onConfirmationReceived(uint16_t charHandle) {}
ktownsend 0:87a7fc231fae 127 };
ktownsend 0:87a7fc231fae 128
ktownsend 0:87a7fc231fae 129 /**************************************************************************/
ktownsend 0:87a7fc231fae 130 /*!
ktownsend 0:87a7fc231fae 131 @brief Program entry point
ktownsend 0:87a7fc231fae 132 */
ktownsend 0:87a7fc231fae 133 /**************************************************************************/
ktownsend 0:87a7fc231fae 134 int main(void)
ktownsend 0:87a7fc231fae 135 {
ktownsend 0:87a7fc231fae 136 /* Setup blinky: led1 is toggled in main, led2 is toggled via Ticker */
Rohit Grover 3:24e2b056d229 137 led1 = 1;
Rohit Grover 3:24e2b056d229 138 led2 = 1;
ktownsend 0:87a7fc231fae 139 flipper.attach(&tickerCallback, 1.0);
ktownsend 0:87a7fc231fae 140
ktownsend 0:87a7fc231fae 141 /* Setup the local GAP/GATT event handlers */
ktownsend 0:87a7fc231fae 142 nrf.getGap().setEventHandler(new GapEventHandler());
ktownsend 0:87a7fc231fae 143 nrf.getGattServer().setEventHandler(new GattServerEventHandler());
ktownsend 0:87a7fc231fae 144
ktownsend 0:87a7fc231fae 145 /* Initialise the nRF51822 */
ktownsend 0:87a7fc231fae 146 pc.printf("Initialising the nRF51822\n\r");
ktownsend 0:87a7fc231fae 147 nrf.init();
ktownsend 0:87a7fc231fae 148
ktownsend 0:87a7fc231fae 149 /* Make sure we get a clean start */
ktownsend 0:87a7fc231fae 150 nrf.reset();
ktownsend 0:87a7fc231fae 151
ktownsend 0:87a7fc231fae 152 /* Add BLE-Only flag and complete service list to the advertising data */
ktownsend 0:87a7fc231fae 153 advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED);
Rohit Grover 3:24e2b056d229 154 advData.addData(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS,
Rohit Grover 3:24e2b056d229 155 (uint8_t *)uuid16_list, sizeof(uuid16_list));
ktownsend 0:87a7fc231fae 156 advData.addAppearance(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT);
ktownsend 0:87a7fc231fae 157 nrf.getGap().setAdvertisingData(advData, scanResponse);
ktownsend 0:87a7fc231fae 158
ktownsend 0:87a7fc231fae 159 /* Add the Battery Level service */
ktownsend 0:87a7fc231fae 160 battService.addCharacteristic(battLevel);
ktownsend 0:87a7fc231fae 161 nrf.getGattServer().addService(battService);
ktownsend 0:87a7fc231fae 162
ktownsend 0:87a7fc231fae 163 /* Add the Device Information service */
ktownsend 0:87a7fc231fae 164 deviceInformationService.addCharacteristic(deviceManufacturer);
ktownsend 0:87a7fc231fae 165 nrf.getGattServer().addService(deviceInformationService);
Rohit Grover 3:24e2b056d229 166
ktownsend 0:87a7fc231fae 167 /* Add the Heart Rate service */
ktownsend 0:87a7fc231fae 168 hrmService.addCharacteristic(hrmRate);
ktownsend 0:87a7fc231fae 169 hrmService.addCharacteristic(hrmLocation);
ktownsend 0:87a7fc231fae 170 nrf.getGattServer().addService(hrmService);
Rohit Grover 3:24e2b056d229 171
ktownsend 0:87a7fc231fae 172 /* Start advertising (make sure you've added all your data first) */
ktownsend 0:87a7fc231fae 173 nrf.getGap().startAdvertising(advParams);
Rohit Grover 3:24e2b056d229 174
Rohit Grover 3:24e2b056d229 175 /* Wait until we are connected to a central device before updating
Rohit Grover 3:24e2b056d229 176 * anything */
ktownsend 0:87a7fc231fae 177 pc.printf("Waiting for a connection ...");
Rohit Grover 3:24e2b056d229 178 while (!nrf.getGap().state.connected) {
ktownsend 0:87a7fc231fae 179 }
ktownsend 0:87a7fc231fae 180 pc.printf("Connected!\n\r");
Rohit Grover 3:24e2b056d229 181
ktownsend 0:87a7fc231fae 182 /* Now that we're live, update the battery level characteristic, and */
ktownsend 0:87a7fc231fae 183 /* change the device manufacturer characteristic to 'mbed' */
Rohit Grover 5:b0baff4a124f 184 nrf.getGattServer().updateValue(battLevel.getHandle(), (uint8_t *)&batt,
Rohit Grover 3:24e2b056d229 185 sizeof(batt));
Rohit Grover 5:b0baff4a124f 186 nrf.getGattServer().updateValue(deviceManufacturer.getHandle(),
Rohit Grover 3:24e2b056d229 187 deviceName,
Rohit Grover 3:24e2b056d229 188 sizeof(deviceName));
ktownsend 0:87a7fc231fae 189
ktownsend 0:87a7fc231fae 190 /* Set the heart rate monitor location (one time only) */
ktownsend 0:87a7fc231fae 191 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
ktownsend 0:87a7fc231fae 192 uint8_t location = 0x03; /* Finger */
ktownsend 0:87a7fc231fae 193 uint8_t hrmCounter = 100;
Rohit Grover 5:b0baff4a124f 194 nrf.getGattServer().updateValue(hrmLocation.getHandle(),
Rohit Grover 3:24e2b056d229 195 (uint8_t *)&location,
Rohit Grover 3:24e2b056d229 196 sizeof(location));
ktownsend 0:87a7fc231fae 197
ktownsend 0:87a7fc231fae 198 /* Do blinky on LED1 while we're waiting for BLE events */
Rohit Grover 3:24e2b056d229 199 for (;; ) {
Rohit Grover 3:24e2b056d229 200 led1 = !led1;
Rohit Grover 3:24e2b056d229 201 wait(1);
Rohit Grover 3:24e2b056d229 202
Rohit Grover 3:24e2b056d229 203 /* Update battery level */
Rohit Grover 3:24e2b056d229 204 batt++;
Rohit Grover 3:24e2b056d229 205 if (batt > 100) {
Rohit Grover 3:24e2b056d229 206 batt = 72;
Rohit Grover 3:24e2b056d229 207 }
Rohit Grover 5:b0baff4a124f 208 nrf.getGattServer().updateValue(battLevel.getHandle(),
Rohit Grover 3:24e2b056d229 209 (uint8_t *)&batt,
Rohit Grover 3:24e2b056d229 210 sizeof(batt));
ktownsend 0:87a7fc231fae 211
ktownsend 0:87a7fc231fae 212 /* Update the HRM measurement */
ktownsend 0:87a7fc231fae 213 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
ktownsend 0:87a7fc231fae 214 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
Rohit Grover 3:24e2b056d229 215 hrmCounter++;
Rohit Grover 3:24e2b056d229 216 if (hrmCounter == 175) {
Rohit Grover 3:24e2b056d229 217 hrmCounter = 100;
Rohit Grover 3:24e2b056d229 218 }
Rohit Grover 3:24e2b056d229 219 uint8_t bpm[2] = {0x00, hrmCounter};
Rohit Grover 5:b0baff4a124f 220 nrf.getGattServer().updateValue(hrmRate.getHandle(), bpm, sizeof(bpm));
ktownsend 0:87a7fc231fae 221 }
ktownsend 0:87a7fc231fae 222 }
ktownsend 0:87a7fc231fae 223
ktownsend 0:87a7fc231fae 224 /**************************************************************************/
ktownsend 0:87a7fc231fae 225 /*!
ktownsend 0:87a7fc231fae 226 @brief Ticker callback to switch led2 state
ktownsend 0:87a7fc231fae 227 */
ktownsend 0:87a7fc231fae 228 /**************************************************************************/
ktownsend 0:87a7fc231fae 229 void tickerCallback(void)
ktownsend 0:87a7fc231fae 230 {
ktownsend 0:87a7fc231fae 231 led2 = !led2;
ktownsend 0:87a7fc231fae 232 }