Demo Glucose Service
Dependencies: BLE_API mbed nRF51822
Fork of BLE_HeartRate by
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@3:24e2b056d229, 2014-05-21 (annotated)
- Committer:
- Rohit Grover
- Date:
- Wed May 21 14:39:35 2014 +0100
- Revision:
- 3:24e2b056d229
- Parent:
- 0:87a7fc231fae
- Child:
- 4:12890f3c62eb
white space diffs; using uncrustify
Who changed what in which revision?
User | Revision | Line number | New 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 |
3:24e2b056d229 | 114 | if (charHandle == hrmRate.handle) { |
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 |
3:24e2b056d229 | 121 | if (charHandle == hrmRate.handle) { |
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 | *(uint32_t *)0x40000504 = 0xC007FFDF; |
ktownsend | 0:87a7fc231fae | 137 | *(uint32_t *)0x40006C18 = 0x00008000; |
Rohit Grover |
3:24e2b056d229 | 138 | |
ktownsend | 0:87a7fc231fae | 139 | /* Setup blinky: led1 is toggled in main, led2 is toggled via Ticker */ |
Rohit Grover |
3:24e2b056d229 | 140 | led1 = 1; |
Rohit Grover |
3:24e2b056d229 | 141 | led2 = 1; |
ktownsend | 0:87a7fc231fae | 142 | flipper.attach(&tickerCallback, 1.0); |
ktownsend | 0:87a7fc231fae | 143 | |
ktownsend | 0:87a7fc231fae | 144 | /* Setup the local GAP/GATT event handlers */ |
ktownsend | 0:87a7fc231fae | 145 | nrf.getGap().setEventHandler(new GapEventHandler()); |
ktownsend | 0:87a7fc231fae | 146 | nrf.getGattServer().setEventHandler(new GattServerEventHandler()); |
ktownsend | 0:87a7fc231fae | 147 | |
ktownsend | 0:87a7fc231fae | 148 | /* Initialise the nRF51822 */ |
ktownsend | 0:87a7fc231fae | 149 | pc.printf("Initialising the nRF51822\n\r"); |
ktownsend | 0:87a7fc231fae | 150 | nrf.init(); |
ktownsend | 0:87a7fc231fae | 151 | |
ktownsend | 0:87a7fc231fae | 152 | /* Make sure we get a clean start */ |
ktownsend | 0:87a7fc231fae | 153 | nrf.reset(); |
ktownsend | 0:87a7fc231fae | 154 | |
ktownsend | 0:87a7fc231fae | 155 | /* Add BLE-Only flag and complete service list to the advertising data */ |
ktownsend | 0:87a7fc231fae | 156 | advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED); |
Rohit Grover |
3:24e2b056d229 | 157 | advData.addData(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, |
Rohit Grover |
3:24e2b056d229 | 158 | (uint8_t *)uuid16_list, sizeof(uuid16_list)); |
ktownsend | 0:87a7fc231fae | 159 | advData.addAppearance(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT); |
ktownsend | 0:87a7fc231fae | 160 | nrf.getGap().setAdvertisingData(advData, scanResponse); |
ktownsend | 0:87a7fc231fae | 161 | |
ktownsend | 0:87a7fc231fae | 162 | /* Add the Battery Level service */ |
ktownsend | 0:87a7fc231fae | 163 | battService.addCharacteristic(battLevel); |
ktownsend | 0:87a7fc231fae | 164 | nrf.getGattServer().addService(battService); |
ktownsend | 0:87a7fc231fae | 165 | |
ktownsend | 0:87a7fc231fae | 166 | /* Add the Device Information service */ |
ktownsend | 0:87a7fc231fae | 167 | deviceInformationService.addCharacteristic(deviceManufacturer); |
ktownsend | 0:87a7fc231fae | 168 | nrf.getGattServer().addService(deviceInformationService); |
Rohit Grover |
3:24e2b056d229 | 169 | |
ktownsend | 0:87a7fc231fae | 170 | /* Add the Heart Rate service */ |
ktownsend | 0:87a7fc231fae | 171 | hrmService.addCharacteristic(hrmRate); |
ktownsend | 0:87a7fc231fae | 172 | hrmService.addCharacteristic(hrmLocation); |
ktownsend | 0:87a7fc231fae | 173 | nrf.getGattServer().addService(hrmService); |
Rohit Grover |
3:24e2b056d229 | 174 | |
ktownsend | 0:87a7fc231fae | 175 | /* Start advertising (make sure you've added all your data first) */ |
ktownsend | 0:87a7fc231fae | 176 | nrf.getGap().startAdvertising(advParams); |
Rohit Grover |
3:24e2b056d229 | 177 | |
Rohit Grover |
3:24e2b056d229 | 178 | /* Wait until we are connected to a central device before updating |
Rohit Grover |
3:24e2b056d229 | 179 | * anything */ |
ktownsend | 0:87a7fc231fae | 180 | pc.printf("Waiting for a connection ..."); |
Rohit Grover |
3:24e2b056d229 | 181 | while (!nrf.getGap().state.connected) { |
ktownsend | 0:87a7fc231fae | 182 | } |
ktownsend | 0:87a7fc231fae | 183 | pc.printf("Connected!\n\r"); |
Rohit Grover |
3:24e2b056d229 | 184 | |
ktownsend | 0:87a7fc231fae | 185 | /* Now that we're live, update the battery level characteristic, and */ |
ktownsend | 0:87a7fc231fae | 186 | /* change the device manufacturer characteristic to 'mbed' */ |
Rohit Grover |
3:24e2b056d229 | 187 | nrf.getGattServer().updateValue(battLevel.handle, (uint8_t *)&batt, |
Rohit Grover |
3:24e2b056d229 | 188 | sizeof(batt)); |
Rohit Grover |
3:24e2b056d229 | 189 | nrf.getGattServer().updateValue(deviceManufacturer.handle, |
Rohit Grover |
3:24e2b056d229 | 190 | deviceName, |
Rohit Grover |
3:24e2b056d229 | 191 | sizeof(deviceName)); |
ktownsend | 0:87a7fc231fae | 192 | |
ktownsend | 0:87a7fc231fae | 193 | /* Set the heart rate monitor location (one time only) */ |
ktownsend | 0:87a7fc231fae | 194 | /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */ |
ktownsend | 0:87a7fc231fae | 195 | uint8_t location = 0x03; /* Finger */ |
ktownsend | 0:87a7fc231fae | 196 | uint8_t hrmCounter = 100; |
Rohit Grover |
3:24e2b056d229 | 197 | nrf.getGattServer().updateValue(hrmLocation.handle, |
Rohit Grover |
3:24e2b056d229 | 198 | (uint8_t *)&location, |
Rohit Grover |
3:24e2b056d229 | 199 | sizeof(location)); |
ktownsend | 0:87a7fc231fae | 200 | |
ktownsend | 0:87a7fc231fae | 201 | /* Do blinky on LED1 while we're waiting for BLE events */ |
Rohit Grover |
3:24e2b056d229 | 202 | for (;; ) { |
Rohit Grover |
3:24e2b056d229 | 203 | led1 = !led1; |
Rohit Grover |
3:24e2b056d229 | 204 | wait(1); |
Rohit Grover |
3:24e2b056d229 | 205 | |
Rohit Grover |
3:24e2b056d229 | 206 | /* Update battery level */ |
Rohit Grover |
3:24e2b056d229 | 207 | batt++; |
Rohit Grover |
3:24e2b056d229 | 208 | if (batt > 100) { |
Rohit Grover |
3:24e2b056d229 | 209 | batt = 72; |
Rohit Grover |
3:24e2b056d229 | 210 | } |
Rohit Grover |
3:24e2b056d229 | 211 | nrf.getGattServer().updateValue(battLevel.handle, |
Rohit Grover |
3:24e2b056d229 | 212 | (uint8_t *)&batt, |
Rohit Grover |
3:24e2b056d229 | 213 | sizeof(batt)); |
ktownsend | 0:87a7fc231fae | 214 | |
ktownsend | 0:87a7fc231fae | 215 | /* Update the HRM measurement */ |
ktownsend | 0:87a7fc231fae | 216 | /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */ |
ktownsend | 0:87a7fc231fae | 217 | /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */ |
Rohit Grover |
3:24e2b056d229 | 218 | hrmCounter++; |
Rohit Grover |
3:24e2b056d229 | 219 | if (hrmCounter == 175) { |
Rohit Grover |
3:24e2b056d229 | 220 | hrmCounter = 100; |
Rohit Grover |
3:24e2b056d229 | 221 | } |
Rohit Grover |
3:24e2b056d229 | 222 | uint8_t bpm[2] = {0x00, hrmCounter}; |
Rohit Grover |
3:24e2b056d229 | 223 | nrf.getGattServer().updateValue(hrmRate.handle, bpm, sizeof(bpm)); |
ktownsend | 0:87a7fc231fae | 224 | } |
ktownsend | 0:87a7fc231fae | 225 | } |
ktownsend | 0:87a7fc231fae | 226 | |
ktownsend | 0:87a7fc231fae | 227 | /**************************************************************************/ |
ktownsend | 0:87a7fc231fae | 228 | /*! |
ktownsend | 0:87a7fc231fae | 229 | @brief Ticker callback to switch led2 state |
ktownsend | 0:87a7fc231fae | 230 | */ |
ktownsend | 0:87a7fc231fae | 231 | /**************************************************************************/ |
ktownsend | 0:87a7fc231fae | 232 | void tickerCallback(void) |
ktownsend | 0:87a7fc231fae | 233 | { |
ktownsend | 0:87a7fc231fae | 234 | led2 = !led2; |
ktownsend | 0:87a7fc231fae | 235 | } |