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@13:3ca2045597e7, 2014-06-10 (annotated)

Committer:
Rohit Grover
Date:
Tue Jun 10 14:36:25 2014 +0100
Revision:
13:3ca2045597e7
Parent:
11:1d9aafee4984
Child:
15:7ba28817e31e
minor updates to comment headers

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 3:24e2b056d229 39 GattCharacteristic battLevel (GattCharacteristic::UUID_BATTERY_LEVEL_CHAR,
rgrover1 7:daab8ba5139e 40 1, /* initialLen */
rgrover1 7:daab8ba5139e 41 1, /* maxLen */
rgrover1 7:daab8ba5139e 42 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 43
ktownsend 0:87a7fc231fae 44 /* Heart Rate Service */
ktownsend 0:87a7fc231fae 45 /* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */
ktownsend 0:87a7fc231fae 46 /* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:87a7fc231fae 47 /* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 3:24e2b056d229 48 GattService hrmService (GattService::UUID_HEART_RATE_SERVICE);
rgrover1 7:daab8ba5139e 49 GattCharacteristic hrmRate (GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR,
rgrover1 7:daab8ba5139e 50 2, /* initialLen */
rgrover1 7:daab8ba5139e 51 3, /* maxLen */
rgrover1 7:daab8ba5139e 52 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
rgrover1 7:daab8ba5139e 53 GattCharacteristic hrmLocation (GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR,
rgrover1 7:daab8ba5139e 54 1, /* initialLen */
rgrover1 7:daab8ba5139e 55 1, /* maxLen */
rgrover1 7:daab8ba5139e 56 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 57
ktownsend 0:87a7fc231fae 58 /* Device Information service */
Rohit Grover 8:49d8ee0aac11 59 static const uint8_t deviceName[] = {'m', 'b', 'e', 'd'};
rgrover1 7:daab8ba5139e 60 GattService deviceInformationService (GattService::UUID_DEVICE_INFORMATION_SERVICE);
Rohit Grover 3:24e2b056d229 61 GattCharacteristic deviceManufacturer (
Rohit Grover 3:24e2b056d229 62 GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
rgrover1 7:daab8ba5139e 63 sizeof(deviceName), /* initialLen */
rgrover1 7:daab8ba5139e 64 sizeof(deviceName), /* maxLen */
Rohit Grover 3:24e2b056d229 65 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 66
rgrover1 7:daab8ba5139e 67 static const uint16_t uuid16_list[] = {
rgrover1 7:daab8ba5139e 68 GattService::UUID_BATTERY_SERVICE,
rgrover1 7:daab8ba5139e 69 GattService::UUID_DEVICE_INFORMATION_SERVICE,
rgrover1 7:daab8ba5139e 70 GattService::UUID_HEART_RATE_SERVICE
rgrover1 7:daab8ba5139e 71 };
ktownsend 0:87a7fc231fae 72
rgrover1 7:daab8ba5139e 73 void timeoutCallback(void)
ktownsend 0:87a7fc231fae 74 {
Rohit Grover 9:5d693381e883 75 DEBUG("Advertising Timeout!\n\r");
rgrover1 7:daab8ba5139e 76 // Restart the advertising process with a much slower interval,
rgrover1 7:daab8ba5139e 77 // only start advertising again after a button press, etc.
rgrover1 7:daab8ba5139e 78 }
ktownsend 0:87a7fc231fae 79
rgrover1 7:daab8ba5139e 80 void connectionCallback(void)
rgrover1 7:daab8ba5139e 81 {
Rohit Grover 9:5d693381e883 82 DEBUG("Connected!\n\r");
rgrover1 7:daab8ba5139e 83 }
ktownsend 0:87a7fc231fae 84
rgrover1 7:daab8ba5139e 85 void disconnectionCallback(void)
ktownsend 0:87a7fc231fae 86 {
Rohit Grover 9:5d693381e883 87 DEBUG("Disconnected!\n\r");
Rohit Grover 9:5d693381e883 88 DEBUG("Restarting the advertising process\n\r");
rgrover1 7:daab8ba5139e 89 ble.startAdvertising();
rgrover1 7:daab8ba5139e 90 }
Rohit Grover 3:24e2b056d229 91
rgrover1 7:daab8ba5139e 92 void updatesEnabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 93 {
rgrover1 7:daab8ba5139e 94 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 9:5d693381e883 95 DEBUG("Heart rate notify enabled\n\r");
ktownsend 0:87a7fc231fae 96 }
rgrover1 7:daab8ba5139e 97 }
ktownsend 0:87a7fc231fae 98
rgrover1 7:daab8ba5139e 99 void updatesDisabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 100 {
rgrover1 7:daab8ba5139e 101 if (charHandle == hrmRate.getHandle()) {
Rohit Grover 9:5d693381e883 102 DEBUG("Heart rate notify disabled\n\r");
ktownsend 0:87a7fc231fae 103 }
rgrover1 7:daab8ba5139e 104 }
ktownsend 0:87a7fc231fae 105
Rohit Grover 13:3ca2045597e7 106 /**
Rohit Grover 13:3ca2045597e7 107 * Runs once a second in interrupt context triggered by the 'ticker'; updates
Rohit Grover 13:3ca2045597e7 108 * battery level and hrmCounter if there is a connection.
Rohit Grover 13:3ca2045597e7 109 */
Rohit Grover 11:1d9aafee4984 110 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 111 {
Rohit Grover 11:1d9aafee4984 112 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
Rohit Grover 11:1d9aafee4984 113
Rohit Grover 11:1d9aafee4984 114 if (ble.getGapState().connected) {
Rohit Grover 11:1d9aafee4984 115 /* Update battery level */
Rohit Grover 11:1d9aafee4984 116 batt++;
Rohit Grover 11:1d9aafee4984 117 if (batt > 100) {
Rohit Grover 11:1d9aafee4984 118 batt = 72;
Rohit Grover 11:1d9aafee4984 119 }
Rohit Grover 11:1d9aafee4984 120 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
Rohit Grover 11:1d9aafee4984 121
Rohit Grover 11:1d9aafee4984 122 /* Update the HRM measurement */
Rohit Grover 11:1d9aafee4984 123 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
Rohit Grover 11:1d9aafee4984 124 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
Rohit Grover 11:1d9aafee4984 125 static uint8_t hrmCounter = 100;
Rohit Grover 11:1d9aafee4984 126 hrmCounter++;
Rohit Grover 11:1d9aafee4984 127 if (hrmCounter == 175) {
Rohit Grover 11:1d9aafee4984 128 hrmCounter = 100;
Rohit Grover 11:1d9aafee4984 129 }
Rohit Grover 11:1d9aafee4984 130 uint8_t bpm[2] = {0x00, hrmCounter};
Rohit Grover 11:1d9aafee4984 131 ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm));
Rohit Grover 11:1d9aafee4984 132 }
Rohit Grover 11:1d9aafee4984 133 }
Rohit Grover 11:1d9aafee4984 134
ktownsend 0:87a7fc231fae 135 int main(void)
ktownsend 0:87a7fc231fae 136 {
Rohit Grover 3:24e2b056d229 137 led1 = 1;
Rohit Grover 11:1d9aafee4984 138 Ticker ticker;
Rohit Grover 11:1d9aafee4984 139 ticker.attach(periodicCallback, 1);
ktownsend 0:87a7fc231fae 140
ktownsend 0:87a7fc231fae 141 /* Setup the local GAP/GATT event handlers */
rgrover1 7:daab8ba5139e 142 ble.onTimeout(timeoutCallback);
rgrover1 7:daab8ba5139e 143 ble.onConnection(connectionCallback);
rgrover1 7:daab8ba5139e 144 ble.onDisconnection(disconnectionCallback);
rgrover1 7:daab8ba5139e 145 ble.onUpdatesEnabled(updatesEnabledCallback);
rgrover1 7:daab8ba5139e 146 ble.onUpdatesDisabled(updatesDisabledCallback);
ktownsend 0:87a7fc231fae 147
Rohit Grover 9:5d693381e883 148 DEBUG("Initialising the nRF51822\n\r");
rgrover1 7:daab8ba5139e 149 ble.init();
ktownsend 0:87a7fc231fae 150
rgrover1 7:daab8ba5139e 151 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
rgrover1 7:daab8ba5139e 152 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 7:daab8ba5139e 153 ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT);
ktownsend 0:87a7fc231fae 154
rgrover1 7:daab8ba5139e 155 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 7:daab8ba5139e 156 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
rgrover1 7:daab8ba5139e 157 ble.startAdvertising();
Rohit Grover 3:24e2b056d229 158
Rohit Grover 11:1d9aafee4984 159 /* Add the Device Information service */
Rohit Grover 11:1d9aafee4984 160 deviceInformationService.addCharacteristic(deviceManufacturer);
Rohit Grover 11:1d9aafee4984 161 ble.addService(deviceInformationService);
rgrover1 7:daab8ba5139e 162 ble.updateCharacteristicValue(deviceManufacturer.getHandle(), deviceName, sizeof(deviceName));
ktownsend 0:87a7fc231fae 163
Rohit Grover 11:1d9aafee4984 164 /* Add the Battery Level service */
Rohit Grover 11:1d9aafee4984 165 battService.addCharacteristic(battLevel);
Rohit Grover 11:1d9aafee4984 166 ble.addService(battService);
Rohit Grover 11:1d9aafee4984 167 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
Rohit Grover 11:1d9aafee4984 168
Rohit Grover 11:1d9aafee4984 169 /* Add the Heart Rate service */
Rohit Grover 11:1d9aafee4984 170 hrmService.addCharacteristic(hrmRate);
Rohit Grover 11:1d9aafee4984 171 hrmService.addCharacteristic(hrmLocation);
Rohit Grover 11:1d9aafee4984 172 ble.addService(hrmService);
ktownsend 0:87a7fc231fae 173 /* Set the heart rate monitor location (one time only) */
ktownsend 0:87a7fc231fae 174 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 11:1d9aafee4984 175 uint8_t location = 0x03; /* Finger */
rgrover1 7:daab8ba5139e 176 ble.updateCharacteristicValue(hrmLocation.getHandle(), (uint8_t *)&location, sizeof(location));
ktownsend 0:87a7fc231fae 177
Rohit Grover 11:1d9aafee4984 178 while (true) {
Rohit Grover 11:1d9aafee4984 179 ble.waitForEvent();
ktownsend 0:87a7fc231fae 180 }
ktownsend 0:87a7fc231fae 181 }