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@0:87a7fc231fae, 2014-03-31 (annotated)

Committer:
ktownsend
Date:
Mon Mar 31 10:28:28 2014 +0000
Revision:
0:87a7fc231fae
Child:
3:24e2b056d229
First commit of HRM example for the BLE API (using nRF51822 native mode drivers)

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
ktownsend 0:87a7fc231fae 20 nRF51822n nrf; /* BLE radio driver */
ktownsend 0:87a7fc231fae 21
ktownsend 0:87a7fc231fae 22 DigitalOut led1(LED1);
ktownsend 0:87a7fc231fae 23 DigitalOut led2(LED2);
ktownsend 0:87a7fc231fae 24 Ticker flipper;
ktownsend 0:87a7fc231fae 25 Serial pc(USBTX,USBRX);
ktownsend 0:87a7fc231fae 26
ktownsend 0:87a7fc231fae 27 /* Battery Level Service */
ktownsend 0:87a7fc231fae 28 uint8_t batt = 72; /* Battery level */
ktownsend 0:87a7fc231fae 29 uint8_t read_batt = 0; /* Variable to hold battery level reads */
ktownsend 0:87a7fc231fae 30 GattService battService ( GattService::UUID_BATTERY_SERVICE );
ktownsend 0:87a7fc231fae 31 GattCharacteristic battLevel ( GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, 1, 1,
ktownsend 0:87a7fc231fae 32 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY |
ktownsend 0:87a7fc231fae 33 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 34
ktownsend 0:87a7fc231fae 35 /* Heart Rate Service */
ktownsend 0:87a7fc231fae 36 /* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */
ktownsend 0:87a7fc231fae 37 /* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:87a7fc231fae 38 /* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
ktownsend 0:87a7fc231fae 39 GattService hrmService ( GattService::UUID_HEART_RATE_SERVICE );
ktownsend 0:87a7fc231fae 40 GattCharacteristic hrmRate ( GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, 2, 3, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY );
ktownsend 0:87a7fc231fae 41 GattCharacteristic hrmLocation ( GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ );
ktownsend 0:87a7fc231fae 42
ktownsend 0:87a7fc231fae 43 /* Device Information service */
ktownsend 0:87a7fc231fae 44 uint8_t deviceName[4] = { 'm', 'b', 'e', 'd' };
ktownsend 0:87a7fc231fae 45 GattService deviceInformationService ( GattService::UUID_DEVICE_INFORMATION_SERVICE );
ktownsend 0:87a7fc231fae 46 GattCharacteristic deviceManufacturer ( GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
ktownsend 0:87a7fc231fae 47 sizeof(deviceName), sizeof(deviceName),
ktownsend 0:87a7fc231fae 48 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 49
ktownsend 0:87a7fc231fae 50 /* Advertising data and parameters */
ktownsend 0:87a7fc231fae 51 GapAdvertisingData advData;
ktownsend 0:87a7fc231fae 52 GapAdvertisingData scanResponse;
ktownsend 0:87a7fc231fae 53 GapAdvertisingParams advParams ( GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED );
ktownsend 0:87a7fc231fae 54 uint16_t uuid16_list[] = { GattService::UUID_BATTERY_SERVICE,
ktownsend 0:87a7fc231fae 55 GattService::UUID_DEVICE_INFORMATION_SERVICE,
ktownsend 0:87a7fc231fae 56 GattService::UUID_HEART_RATE_SERVICE };
ktownsend 0:87a7fc231fae 57
ktownsend 0:87a7fc231fae 58 void tickerCallback(void);
ktownsend 0:87a7fc231fae 59
ktownsend 0:87a7fc231fae 60 /**************************************************************************/
ktownsend 0:87a7fc231fae 61 /*!
ktownsend 0:87a7fc231fae 62 @brief This custom class can be used to override any GapEvents
ktownsend 0:87a7fc231fae 63 that you are interested in handling on an application level.
ktownsend 0:87a7fc231fae 64 */
ktownsend 0:87a7fc231fae 65 /**************************************************************************/
ktownsend 0:87a7fc231fae 66 class GapEventHandler : public GapEvents
ktownsend 0:87a7fc231fae 67 {
ktownsend 0:87a7fc231fae 68 virtual void onTimeout(void)
ktownsend 0:87a7fc231fae 69 {
ktownsend 0:87a7fc231fae 70 pc.printf("Advertising Timeout!\n\r");
ktownsend 0:87a7fc231fae 71 // Restart the advertising process with a much slower interval,
ktownsend 0:87a7fc231fae 72 // only start advertising again after a button press, etc.
ktownsend 0:87a7fc231fae 73 }
ktownsend 0:87a7fc231fae 74
ktownsend 0:87a7fc231fae 75 virtual void onConnected(void)
ktownsend 0:87a7fc231fae 76 {
ktownsend 0:87a7fc231fae 77 pc.printf("Connected!\n\r");
ktownsend 0:87a7fc231fae 78 }
ktownsend 0:87a7fc231fae 79
ktownsend 0:87a7fc231fae 80 virtual void onDisconnected(void)
ktownsend 0:87a7fc231fae 81 {
ktownsend 0:87a7fc231fae 82 pc.printf("Disconnected!\n\r");
ktownsend 0:87a7fc231fae 83 pc.printf("Restarting the advertising process\n\r");
ktownsend 0:87a7fc231fae 84 nrf.getGap().startAdvertising(advParams);
ktownsend 0:87a7fc231fae 85 }
ktownsend 0:87a7fc231fae 86 };
ktownsend 0:87a7fc231fae 87
ktownsend 0:87a7fc231fae 88 /**************************************************************************/
ktownsend 0:87a7fc231fae 89 /*!
ktownsend 0:87a7fc231fae 90 @brief This custom class can be used to override any GattServerEvents
ktownsend 0:87a7fc231fae 91 that you are interested in handling on an application level.
ktownsend 0:87a7fc231fae 92 */
ktownsend 0:87a7fc231fae 93 /**************************************************************************/
ktownsend 0:87a7fc231fae 94 class GattServerEventHandler : public GattServerEvents
ktownsend 0:87a7fc231fae 95 {
ktownsend 0:87a7fc231fae 96 //virtual void onDataSent(uint16_t charHandle) {}
ktownsend 0:87a7fc231fae 97 //virtual void onDataWritten(uint16_t charHandle) {}
ktownsend 0:87a7fc231fae 98
ktownsend 0:87a7fc231fae 99 virtual void onUpdatesEnabled(uint16_t charHandle)
ktownsend 0:87a7fc231fae 100 {
ktownsend 0:87a7fc231fae 101 if (charHandle == hrmRate.handle)
ktownsend 0:87a7fc231fae 102 {
ktownsend 0:87a7fc231fae 103 pc.printf("Heart rate notify enabled\n\r");
ktownsend 0:87a7fc231fae 104 }
ktownsend 0:87a7fc231fae 105 }
ktownsend 0:87a7fc231fae 106
ktownsend 0:87a7fc231fae 107 virtual void onUpdatesDisabled(uint16_t charHandle)
ktownsend 0:87a7fc231fae 108 {
ktownsend 0:87a7fc231fae 109 if (charHandle == hrmRate.handle)
ktownsend 0:87a7fc231fae 110 {
ktownsend 0:87a7fc231fae 111 pc.printf("Heart rate notify disabled\n\r");
ktownsend 0:87a7fc231fae 112 }
ktownsend 0:87a7fc231fae 113 }
ktownsend 0:87a7fc231fae 114
ktownsend 0:87a7fc231fae 115 //virtual void onConfirmationReceived(uint16_t charHandle) {}
ktownsend 0:87a7fc231fae 116 };
ktownsend 0:87a7fc231fae 117
ktownsend 0:87a7fc231fae 118 /**************************************************************************/
ktownsend 0:87a7fc231fae 119 /*!
ktownsend 0:87a7fc231fae 120 @brief Program entry point
ktownsend 0:87a7fc231fae 121 */
ktownsend 0:87a7fc231fae 122 /**************************************************************************/
ktownsend 0:87a7fc231fae 123 int main(void)
ktownsend 0:87a7fc231fae 124 {
ktownsend 0:87a7fc231fae 125 *(uint32_t *)0x40000504 = 0xC007FFDF;
ktownsend 0:87a7fc231fae 126 *(uint32_t *)0x40006C18 = 0x00008000;
ktownsend 0:87a7fc231fae 127
ktownsend 0:87a7fc231fae 128 /* Setup blinky: led1 is toggled in main, led2 is toggled via Ticker */
ktownsend 0:87a7fc231fae 129 led1=1;
ktownsend 0:87a7fc231fae 130 led2=1;
ktownsend 0:87a7fc231fae 131 flipper.attach(&tickerCallback, 1.0);
ktownsend 0:87a7fc231fae 132
ktownsend 0:87a7fc231fae 133 /* Setup the local GAP/GATT event handlers */
ktownsend 0:87a7fc231fae 134 nrf.getGap().setEventHandler(new GapEventHandler());
ktownsend 0:87a7fc231fae 135 nrf.getGattServer().setEventHandler(new GattServerEventHandler());
ktownsend 0:87a7fc231fae 136
ktownsend 0:87a7fc231fae 137 /* Initialise the nRF51822 */
ktownsend 0:87a7fc231fae 138 pc.printf("Initialising the nRF51822\n\r");
ktownsend 0:87a7fc231fae 139 nrf.init();
ktownsend 0:87a7fc231fae 140
ktownsend 0:87a7fc231fae 141 /* Make sure we get a clean start */
ktownsend 0:87a7fc231fae 142 nrf.reset();
ktownsend 0:87a7fc231fae 143
ktownsend 0:87a7fc231fae 144 /* Add BLE-Only flag and complete service list to the advertising data */
ktownsend 0:87a7fc231fae 145 advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED);
ktownsend 0:87a7fc231fae 146 advData.addData(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS,
ktownsend 0:87a7fc231fae 147 (uint8_t*)uuid16_list, sizeof(uuid16_list));
ktownsend 0:87a7fc231fae 148 advData.addAppearance(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT);
ktownsend 0:87a7fc231fae 149 nrf.getGap().setAdvertisingData(advData, scanResponse);
ktownsend 0:87a7fc231fae 150
ktownsend 0:87a7fc231fae 151 /* Add the Battery Level service */
ktownsend 0:87a7fc231fae 152 battService.addCharacteristic(battLevel);
ktownsend 0:87a7fc231fae 153 nrf.getGattServer().addService(battService);
ktownsend 0:87a7fc231fae 154
ktownsend 0:87a7fc231fae 155 /* Add the Device Information service */
ktownsend 0:87a7fc231fae 156 deviceInformationService.addCharacteristic(deviceManufacturer);
ktownsend 0:87a7fc231fae 157 nrf.getGattServer().addService(deviceInformationService);
ktownsend 0:87a7fc231fae 158
ktownsend 0:87a7fc231fae 159 /* Add the Heart Rate service */
ktownsend 0:87a7fc231fae 160 hrmService.addCharacteristic(hrmRate);
ktownsend 0:87a7fc231fae 161 hrmService.addCharacteristic(hrmLocation);
ktownsend 0:87a7fc231fae 162 nrf.getGattServer().addService(hrmService);
ktownsend 0:87a7fc231fae 163
ktownsend 0:87a7fc231fae 164 /* Start advertising (make sure you've added all your data first) */
ktownsend 0:87a7fc231fae 165 nrf.getGap().startAdvertising(advParams);
ktownsend 0:87a7fc231fae 166
ktownsend 0:87a7fc231fae 167 /* Wait until we are connected to a central device before updating anything */
ktownsend 0:87a7fc231fae 168 pc.printf("Waiting for a connection ...");
ktownsend 0:87a7fc231fae 169 while(!nrf.getGap().state.connected)
ktownsend 0:87a7fc231fae 170 {
ktownsend 0:87a7fc231fae 171 }
ktownsend 0:87a7fc231fae 172 pc.printf("Connected!\n\r");
ktownsend 0:87a7fc231fae 173
ktownsend 0:87a7fc231fae 174 /* Now that we're live, update the battery level characteristic, and */
ktownsend 0:87a7fc231fae 175 /* change the device manufacturer characteristic to 'mbed' */
ktownsend 0:87a7fc231fae 176 nrf.getGattServer().updateValue(battLevel.handle, (uint8_t*)&batt, sizeof(batt));
ktownsend 0:87a7fc231fae 177 nrf.getGattServer().updateValue(deviceManufacturer.handle, deviceName, sizeof(deviceName));
ktownsend 0:87a7fc231fae 178
ktownsend 0:87a7fc231fae 179 /* Set the heart rate monitor location (one time only) */
ktownsend 0:87a7fc231fae 180 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
ktownsend 0:87a7fc231fae 181 uint8_t location = 0x03; /* Finger */
ktownsend 0:87a7fc231fae 182 uint8_t hrmCounter = 100;
ktownsend 0:87a7fc231fae 183 nrf.getGattServer().updateValue(hrmLocation.handle, (uint8_t*)&location, sizeof(location));
ktownsend 0:87a7fc231fae 184
ktownsend 0:87a7fc231fae 185 /* Do blinky on LED1 while we're waiting for BLE events */
ktownsend 0:87a7fc231fae 186 for (;;)
ktownsend 0:87a7fc231fae 187 {
ktownsend 0:87a7fc231fae 188 led1 = !led1;
ktownsend 0:87a7fc231fae 189 wait(1);
ktownsend 0:87a7fc231fae 190
ktownsend 0:87a7fc231fae 191 /* Update battery level */
ktownsend 0:87a7fc231fae 192 batt++;
ktownsend 0:87a7fc231fae 193 if (batt > 100) batt = 72;
ktownsend 0:87a7fc231fae 194 nrf.getGattServer().updateValue(battLevel.handle, (uint8_t*)&batt, sizeof(batt));
ktownsend 0:87a7fc231fae 195
ktownsend 0:87a7fc231fae 196 /* Update the HRM measurement */
ktownsend 0:87a7fc231fae 197 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
ktownsend 0:87a7fc231fae 198 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:87a7fc231fae 199 hrmCounter++;
ktownsend 0:87a7fc231fae 200 if (hrmCounter == 175) hrmCounter = 100;
ktownsend 0:87a7fc231fae 201 uint8_t bpm[2] = { 0x00, hrmCounter };
ktownsend 0:87a7fc231fae 202 nrf.getGattServer().updateValue(hrmRate.handle, bpm, sizeof(bpm));
ktownsend 0:87a7fc231fae 203 }
ktownsend 0:87a7fc231fae 204 }
ktownsend 0:87a7fc231fae 205
ktownsend 0:87a7fc231fae 206 /**************************************************************************/
ktownsend 0:87a7fc231fae 207 /*!
ktownsend 0:87a7fc231fae 208 @brief Ticker callback to switch led2 state
ktownsend 0:87a7fc231fae 209 */
ktownsend 0:87a7fc231fae 210 /**************************************************************************/
ktownsend 0:87a7fc231fae 211 void tickerCallback(void)
ktownsend 0:87a7fc231fae 212 {
ktownsend 0:87a7fc231fae 213 led2 = !led2;
ktownsend 0:87a7fc231fae 214 }