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@17:583b765af55f, 2014-06-11 (annotated)

Committer:
Rohit Grover
Date:
Wed Jun 11 09:07:11 2014 +0100
Revision:
17:583b765af55f
Parent:
16:f3361e20642d
Child:
18:8a2e313f49cb
remove an un-used global variable

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 */
Rohit Grover 3:24e2b056d229 37 GattService battService (GattService::UUID_BATTERY_SERVICE);
Rohit Grover 16:f3361e20642d 38 GattCharacteristic battLevel (GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, 1, 1,
rgrover1 7:daab8ba5139e 39 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 40
ktownsend 0:87a7fc231fae 41 /* Heart Rate Service */
ktownsend 0:87a7fc231fae 42 /* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */
ktownsend 0:87a7fc231fae 43 /* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:87a7fc231fae 44 /* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 16:f3361e20642d 45 GattService hrmService(GattService::UUID_HEART_RATE_SERVICE);
Rohit Grover 16:f3361e20642d 46 GattCharacteristic hrmRate(GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, 2, 3, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
Rohit Grover 16:f3361e20642d 47 GattCharacteristic hrmLocation(GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, 1, 1, GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 48
ktownsend 0:87a7fc231fae 49 /* Device Information service */
Rohit Grover 8:49d8ee0aac11 50 static const uint8_t deviceName[] = {'m', 'b', 'e', 'd'};
rgrover1 7:daab8ba5139e 51 GattService deviceInformationService (GattService::UUID_DEVICE_INFORMATION_SERVICE);
Rohit Grover 16:f3361e20642d 52 GattCharacteristic deviceManufacturer (GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
Rohit Grover 16:f3361e20642d 53 sizeof(deviceName), sizeof(deviceName), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 54
rgrover1 7:daab8ba5139e 55 static const uint16_t uuid16_list[] = {
rgrover1 7:daab8ba5139e 56 GattService::UUID_BATTERY_SERVICE,
rgrover1 7:daab8ba5139e 57 GattService::UUID_DEVICE_INFORMATION_SERVICE,
rgrover1 7:daab8ba5139e 58 GattService::UUID_HEART_RATE_SERVICE
rgrover1 7:daab8ba5139e 59 };
ktownsend 0:87a7fc231fae 60
rgrover1 7:daab8ba5139e 61 void timeoutCallback(void)
ktownsend 0:87a7fc231fae 62 {
Rohit Grover 9:5d693381e883 63 DEBUG("Advertising Timeout!\n\r");
rgrover1 7:daab8ba5139e 64 // Restart the advertising process with a much slower interval,
rgrover1 7:daab8ba5139e 65 // only start advertising again after a button press, etc.
rgrover1 7:daab8ba5139e 66 }
ktownsend 0:87a7fc231fae 67
rgrover1 7:daab8ba5139e 68 void connectionCallback(void)
rgrover1 7:daab8ba5139e 69 {
Rohit Grover 9:5d693381e883 70 DEBUG("Connected!\n\r");
rgrover1 7:daab8ba5139e 71 }
ktownsend 0:87a7fc231fae 72
rgrover1 7:daab8ba5139e 73 void disconnectionCallback(void)
ktownsend 0:87a7fc231fae 74 {
Rohit Grover 9:5d693381e883 75 DEBUG("Disconnected!\n\r");
Rohit Grover 9:5d693381e883 76 DEBUG("Restarting the advertising process\n\r");
rgrover1 7:daab8ba5139e 77 ble.startAdvertising();
rgrover1 7:daab8ba5139e 78 }
Rohit Grover 3:24e2b056d229 79
rgrover1 7:daab8ba5139e 80 void updatesEnabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 81 {
rgrover1 7:daab8ba5139e 82 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 9:5d693381e883 83 DEBUG("Heart rate notify enabled\n\r");
ktownsend 0:87a7fc231fae 84 }
rgrover1 7:daab8ba5139e 85 }
ktownsend 0:87a7fc231fae 86
rgrover1 7:daab8ba5139e 87 void updatesDisabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 88 {
rgrover1 7:daab8ba5139e 89 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 9:5d693381e883 90 DEBUG("Heart rate notify disabled\n\r");
ktownsend 0:87a7fc231fae 91 }
rgrover1 7:daab8ba5139e 92 }
ktownsend 0:87a7fc231fae 93
Rohit Grover 13:3ca2045597e7 94 /**
Rohit Grover 13:3ca2045597e7 95 * Runs once a second in interrupt context triggered by the 'ticker'; updates
Rohit Grover 13:3ca2045597e7 96 * battery level and hrmCounter if there is a connection.
Rohit Grover 13:3ca2045597e7 97 */
Rohit Grover 11:1d9aafee4984 98 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 99 {
Rohit Grover 11:1d9aafee4984 100 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
Rohit Grover 11:1d9aafee4984 101
Rohit Grover 11:1d9aafee4984 102 if (ble.getGapState().connected) {
Rohit Grover 11:1d9aafee4984 103 /* Update battery level */
Rohit Grover 11:1d9aafee4984 104 batt++;
Rohit Grover 11:1d9aafee4984 105 if (batt > 100) {
Rohit Grover 11:1d9aafee4984 106 batt = 72;
Rohit Grover 11:1d9aafee4984 107 }
Rohit Grover 11:1d9aafee4984 108 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
Rohit Grover 11:1d9aafee4984 109
Rohit Grover 11:1d9aafee4984 110 /* Update the HRM measurement */
Rohit Grover 11:1d9aafee4984 111 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
Rohit Grover 11:1d9aafee4984 112 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
Rohit Grover 11:1d9aafee4984 113 static uint8_t hrmCounter = 100;
Rohit Grover 11:1d9aafee4984 114 hrmCounter++;
Rohit Grover 11:1d9aafee4984 115 if (hrmCounter == 175) {
Rohit Grover 11:1d9aafee4984 116 hrmCounter = 100;
Rohit Grover 11:1d9aafee4984 117 }
Rohit Grover 11:1d9aafee4984 118 uint8_t bpm[2] = {0x00, hrmCounter};
Rohit Grover 11:1d9aafee4984 119 ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm));
Rohit Grover 11:1d9aafee4984 120 }
Rohit Grover 11:1d9aafee4984 121 }
Rohit Grover 11:1d9aafee4984 122
ktownsend 0:87a7fc231fae 123 int main(void)
ktownsend 0:87a7fc231fae 124 {
Rohit Grover 3:24e2b056d229 125 led1 = 1;
Rohit Grover 11:1d9aafee4984 126 Ticker ticker;
Rohit Grover 11:1d9aafee4984 127 ticker.attach(periodicCallback, 1);
ktownsend 0:87a7fc231fae 128
Rohit Grover 15:7ba28817e31e 129 DEBUG("Initialising the nRF51822\n\r");
Rohit Grover 15:7ba28817e31e 130 ble.init();
Rohit Grover 15:7ba28817e31e 131
ktownsend 0:87a7fc231fae 132 /* Setup the local GAP/GATT event handlers */
rgrover1 7:daab8ba5139e 133 ble.onTimeout(timeoutCallback);
rgrover1 7:daab8ba5139e 134 ble.onConnection(connectionCallback);
rgrover1 7:daab8ba5139e 135 ble.onDisconnection(disconnectionCallback);
rgrover1 7:daab8ba5139e 136 ble.onUpdatesEnabled(updatesEnabledCallback);
rgrover1 7:daab8ba5139e 137 ble.onUpdatesDisabled(updatesDisabledCallback);
ktownsend 0:87a7fc231fae 138
Rohit Grover 15:7ba28817e31e 139 /* setup advertising */
rgrover1 7:daab8ba5139e 140 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
rgrover1 7:daab8ba5139e 141 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 7:daab8ba5139e 142 ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT);
rgrover1 7:daab8ba5139e 143 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 7:daab8ba5139e 144 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
rgrover1 7:daab8ba5139e 145 ble.startAdvertising();
Rohit Grover 3:24e2b056d229 146
Rohit Grover 11:1d9aafee4984 147 /* Add the Device Information service */
Rohit Grover 11:1d9aafee4984 148 deviceInformationService.addCharacteristic(deviceManufacturer);
Rohit Grover 11:1d9aafee4984 149 ble.addService(deviceInformationService);
rgrover1 7:daab8ba5139e 150 ble.updateCharacteristicValue(deviceManufacturer.getHandle(), deviceName, sizeof(deviceName));
ktownsend 0:87a7fc231fae 151
Rohit Grover 11:1d9aafee4984 152 /* Add the Battery Level service */
Rohit Grover 11:1d9aafee4984 153 battService.addCharacteristic(battLevel);
Rohit Grover 11:1d9aafee4984 154 ble.addService(battService);
Rohit Grover 11:1d9aafee4984 155 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
Rohit Grover 11:1d9aafee4984 156
Rohit Grover 11:1d9aafee4984 157 /* Add the Heart Rate service */
Rohit Grover 11:1d9aafee4984 158 hrmService.addCharacteristic(hrmRate);
Rohit Grover 11:1d9aafee4984 159 hrmService.addCharacteristic(hrmLocation);
Rohit Grover 11:1d9aafee4984 160 ble.addService(hrmService);
ktownsend 0:87a7fc231fae 161 /* Set the heart rate monitor location (one time only) */
ktownsend 0:87a7fc231fae 162 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 11:1d9aafee4984 163 uint8_t location = 0x03; /* Finger */
rgrover1 7:daab8ba5139e 164 ble.updateCharacteristicValue(hrmLocation.getHandle(), (uint8_t *)&location, sizeof(location));
ktownsend 0:87a7fc231fae 165
Rohit Grover 11:1d9aafee4984 166 while (true) {
Rohit Grover 11:1d9aafee4984 167 ble.waitForEvent();
ktownsend 0:87a7fc231fae 168 }
ktownsend 0:87a7fc231fae 169 }