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@16:f3361e20642d, 2014-06-11 (annotated)

Committer:
Rohit Grover
Date:
Wed Jun 11 09:06:14 2014 +0100
Revision:
16:f3361e20642d
Parent:
15:7ba28817e31e
Child:
17:583b765af55f
minor white-space diffs having to do with coding style

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"
Rohit Grover 10:2436164b692e 18 #include "BLEDevice.h"
ktownsend 0:87a7fc231fae 19
Rohit Grover 10:2436164b692e 20 BLEDevice ble;
ktownsend 0:87a7fc231fae 21
Rohit Grover 3:24e2b056d229 22 DigitalOut led1(LED1);
Rohit Grover 9:5d693381e883 23
Rohit Grover 9:5d693381e883 24 #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console;
Rohit Grover 9:5d693381e883 25 * it will have an impact on code-size and power
Rohit Grover 9:5d693381e883 26 * consumption. */
Rohit Grover 9:5d693381e883 27
Rohit Grover 9:5d693381e883 28 #if NEED_CONSOLE_OUTPUT
Rohit Grover 9:5d693381e883 29 Serial pc(USBTX, USBRX);
Rohit Grover 9:5d693381e883 30 #define DEBUG(...) { pc.printf(__VA_ARGS__); }
Rohit Grover 9:5d693381e883 31 #else
Rohit Grover 9:5d693381e883 32 #define DEBUG(...) /* nothing */
Rohit Grover 9:5d693381e883 33 #endif /* #if NEED_CONSOLE_OUTPUT */
ktownsend 0:87a7fc231fae 34
ktownsend 0:87a7fc231fae 35 /* Battery Level Service */
Rohit Grover 3:24e2b056d229 36 uint8_t batt = 72; /* Battery level */
rgrover1 7:daab8ba5139e 37 uint8_t read_batt = 0; /* Variable to hold battery level reads */
Rohit Grover 3:24e2b056d229 38 GattService battService (GattService::UUID_BATTERY_SERVICE);
Rohit Grover 16:f3361e20642d 39 GattCharacteristic battLevel (GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, 1, 1,
rgrover1 7:daab8ba5139e 40 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 41
ktownsend 0:87a7fc231fae 42 /* Heart Rate Service */
ktownsend 0:87a7fc231fae 43 /* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */
ktownsend 0:87a7fc231fae 44 /* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:87a7fc231fae 45 /* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 16:f3361e20642d 46 GattService hrmService(GattService::UUID_HEART_RATE_SERVICE);
Rohit Grover 16:f3361e20642d 47 GattCharacteristic hrmRate(GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, 2, 3, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
Rohit Grover 16:f3361e20642d 48 GattCharacteristic hrmLocation(GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 49
ktownsend 0:87a7fc231fae 50 /* Device Information service */
Rohit Grover 8:49d8ee0aac11 51 static const uint8_t deviceName[] = {'m', 'b', 'e', 'd'};
rgrover1 7:daab8ba5139e 52 GattService deviceInformationService (GattService::UUID_DEVICE_INFORMATION_SERVICE);
Rohit Grover 16:f3361e20642d 53 GattCharacteristic deviceManufacturer (GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
Rohit Grover 16:f3361e20642d 54 sizeof(deviceName), sizeof(deviceName), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 55
rgrover1 7:daab8ba5139e 56 static const uint16_t uuid16_list[] = {
rgrover1 7:daab8ba5139e 57 GattService::UUID_BATTERY_SERVICE,
rgrover1 7:daab8ba5139e 58 GattService::UUID_DEVICE_INFORMATION_SERVICE,
rgrover1 7:daab8ba5139e 59 GattService::UUID_HEART_RATE_SERVICE
rgrover1 7:daab8ba5139e 60 };
ktownsend 0:87a7fc231fae 61
rgrover1 7:daab8ba5139e 62 void timeoutCallback(void)
ktownsend 0:87a7fc231fae 63 {
Rohit Grover 9:5d693381e883 64 DEBUG("Advertising Timeout!\n\r");
rgrover1 7:daab8ba5139e 65 // Restart the advertising process with a much slower interval,
rgrover1 7:daab8ba5139e 66 // only start advertising again after a button press, etc.
rgrover1 7:daab8ba5139e 67 }
ktownsend 0:87a7fc231fae 68
rgrover1 7:daab8ba5139e 69 void connectionCallback(void)
rgrover1 7:daab8ba5139e 70 {
Rohit Grover 9:5d693381e883 71 DEBUG("Connected!\n\r");
rgrover1 7:daab8ba5139e 72 }
ktownsend 0:87a7fc231fae 73
rgrover1 7:daab8ba5139e 74 void disconnectionCallback(void)
ktownsend 0:87a7fc231fae 75 {
Rohit Grover 9:5d693381e883 76 DEBUG("Disconnected!\n\r");
Rohit Grover 9:5d693381e883 77 DEBUG("Restarting the advertising process\n\r");
rgrover1 7:daab8ba5139e 78 ble.startAdvertising();
rgrover1 7:daab8ba5139e 79 }
Rohit Grover 3:24e2b056d229 80
rgrover1 7:daab8ba5139e 81 void updatesEnabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 82 {
rgrover1 7:daab8ba5139e 83 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 9:5d693381e883 84 DEBUG("Heart rate notify enabled\n\r");
ktownsend 0:87a7fc231fae 85 }
rgrover1 7:daab8ba5139e 86 }
ktownsend 0:87a7fc231fae 87
rgrover1 7:daab8ba5139e 88 void updatesDisabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 89 {
rgrover1 7:daab8ba5139e 90 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 9:5d693381e883 91 DEBUG("Heart rate notify disabled\n\r");
ktownsend 0:87a7fc231fae 92 }
rgrover1 7:daab8ba5139e 93 }
ktownsend 0:87a7fc231fae 94
Rohit Grover 13:3ca2045597e7 95 /**
Rohit Grover 13:3ca2045597e7 96 * Runs once a second in interrupt context triggered by the 'ticker'; updates
Rohit Grover 13:3ca2045597e7 97 * battery level and hrmCounter if there is a connection.
Rohit Grover 13:3ca2045597e7 98 */
Rohit Grover 11:1d9aafee4984 99 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 100 {
Rohit Grover 11:1d9aafee4984 101 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
Rohit Grover 11:1d9aafee4984 102
Rohit Grover 11:1d9aafee4984 103 if (ble.getGapState().connected) {
Rohit Grover 11:1d9aafee4984 104 /* Update battery level */
Rohit Grover 11:1d9aafee4984 105 batt++;
Rohit Grover 11:1d9aafee4984 106 if (batt > 100) {
Rohit Grover 11:1d9aafee4984 107 batt = 72;
Rohit Grover 11:1d9aafee4984 108 }
Rohit Grover 11:1d9aafee4984 109 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
Rohit Grover 11:1d9aafee4984 110
Rohit Grover 11:1d9aafee4984 111 /* Update the HRM measurement */
Rohit Grover 11:1d9aafee4984 112 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
Rohit Grover 11:1d9aafee4984 113 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
Rohit Grover 11:1d9aafee4984 114 static uint8_t hrmCounter = 100;
Rohit Grover 11:1d9aafee4984 115 hrmCounter++;
Rohit Grover 11:1d9aafee4984 116 if (hrmCounter == 175) {
Rohit Grover 11:1d9aafee4984 117 hrmCounter = 100;
Rohit Grover 11:1d9aafee4984 118 }
Rohit Grover 11:1d9aafee4984 119 uint8_t bpm[2] = {0x00, hrmCounter};
Rohit Grover 11:1d9aafee4984 120 ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm));
Rohit Grover 11:1d9aafee4984 121 }
Rohit Grover 11:1d9aafee4984 122 }
Rohit Grover 11:1d9aafee4984 123
ktownsend 0:87a7fc231fae 124 int main(void)
ktownsend 0:87a7fc231fae 125 {
Rohit Grover 3:24e2b056d229 126 led1 = 1;
Rohit Grover 11:1d9aafee4984 127 Ticker ticker;
Rohit Grover 11:1d9aafee4984 128 ticker.attach(periodicCallback, 1);
ktownsend 0:87a7fc231fae 129
Rohit Grover 15:7ba28817e31e 130 DEBUG("Initialising the nRF51822\n\r");
Rohit Grover 15:7ba28817e31e 131 ble.init();
Rohit Grover 15:7ba28817e31e 132
ktownsend 0:87a7fc231fae 133 /* Setup the local GAP/GATT event handlers */
rgrover1 7:daab8ba5139e 134 ble.onTimeout(timeoutCallback);
rgrover1 7:daab8ba5139e 135 ble.onConnection(connectionCallback);
rgrover1 7:daab8ba5139e 136 ble.onDisconnection(disconnectionCallback);
rgrover1 7:daab8ba5139e 137 ble.onUpdatesEnabled(updatesEnabledCallback);
rgrover1 7:daab8ba5139e 138 ble.onUpdatesDisabled(updatesDisabledCallback);
ktownsend 0:87a7fc231fae 139
Rohit Grover 15:7ba28817e31e 140 /* setup advertising */
rgrover1 7:daab8ba5139e 141 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
rgrover1 7:daab8ba5139e 142 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 7:daab8ba5139e 143 ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT);
rgrover1 7:daab8ba5139e 144 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 7:daab8ba5139e 145 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
rgrover1 7:daab8ba5139e 146 ble.startAdvertising();
Rohit Grover 3:24e2b056d229 147
Rohit Grover 11:1d9aafee4984 148 /* Add the Device Information service */
Rohit Grover 11:1d9aafee4984 149 deviceInformationService.addCharacteristic(deviceManufacturer);
Rohit Grover 11:1d9aafee4984 150 ble.addService(deviceInformationService);
rgrover1 7:daab8ba5139e 151 ble.updateCharacteristicValue(deviceManufacturer.getHandle(), deviceName, sizeof(deviceName));
ktownsend 0:87a7fc231fae 152
Rohit Grover 11:1d9aafee4984 153 /* Add the Battery Level service */
Rohit Grover 11:1d9aafee4984 154 battService.addCharacteristic(battLevel);
Rohit Grover 11:1d9aafee4984 155 ble.addService(battService);
Rohit Grover 11:1d9aafee4984 156 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
Rohit Grover 11:1d9aafee4984 157
Rohit Grover 11:1d9aafee4984 158 /* Add the Heart Rate service */
Rohit Grover 11:1d9aafee4984 159 hrmService.addCharacteristic(hrmRate);
Rohit Grover 11:1d9aafee4984 160 hrmService.addCharacteristic(hrmLocation);
Rohit Grover 11:1d9aafee4984 161 ble.addService(hrmService);
ktownsend 0:87a7fc231fae 162 /* Set the heart rate monitor location (one time only) */
ktownsend 0:87a7fc231fae 163 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 11:1d9aafee4984 164 uint8_t location = 0x03; /* Finger */
rgrover1 7:daab8ba5139e 165 ble.updateCharacteristicValue(hrmLocation.getHandle(), (uint8_t *)&location, sizeof(location));
ktownsend 0:87a7fc231fae 166
Rohit Grover 11:1d9aafee4984 167 while (true) {
Rohit Grover 11:1d9aafee4984 168 ble.waitForEvent();
ktownsend 0:87a7fc231fae 169 }
ktownsend 0:87a7fc231fae 170 }