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@7:daab8ba5139e, 2014-06-10 (annotated)

Committer:
rgrover1
Date:
Tue Jun 10 09:21:43 2014 +0000
Revision:
7:daab8ba5139e
Parent:
5:b0baff4a124f
Child:
8:49d8ee0aac11
Update to using the latest versions of the underlying APIs and waitForEvent() to reduce power consumption.

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"
rgrover1 7:daab8ba5139e 18 #include "BLEPeripheral.h"
ktownsend 0:87a7fc231fae 19
rgrover1 7:daab8ba5139e 20 BLEPeripheral ble; /* 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 */
rgrover1 7:daab8ba5139e 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,
rgrover1 7:daab8ba5139e 32 1, /* initialLen */
rgrover1 7:daab8ba5139e 33 1, /* maxLen */
rgrover1 7:daab8ba5139e 34 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 35
ktownsend 0:87a7fc231fae 36 /* Heart Rate Service */
ktownsend 0:87a7fc231fae 37 /* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */
ktownsend 0:87a7fc231fae 38 /* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
ktownsend 0:87a7fc231fae 39 /* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
Rohit Grover 3:24e2b056d229 40 GattService hrmService (GattService::UUID_HEART_RATE_SERVICE);
rgrover1 7:daab8ba5139e 41 GattCharacteristic hrmRate (GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR,
rgrover1 7:daab8ba5139e 42 2, /* initialLen */
rgrover1 7:daab8ba5139e 43 3, /* maxLen */
rgrover1 7:daab8ba5139e 44 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
rgrover1 7:daab8ba5139e 45 GattCharacteristic hrmLocation (GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR,
rgrover1 7:daab8ba5139e 46 1, /* initialLen */
rgrover1 7:daab8ba5139e 47 1, /* maxLen */
rgrover1 7:daab8ba5139e 48 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 49
ktownsend 0:87a7fc231fae 50 /* Device Information service */
Rohit Grover 3:24e2b056d229 51 uint8_t deviceName[4] = {'m', 'b', 'e', 'd'};
rgrover1 7:daab8ba5139e 52 GattService deviceInformationService (GattService::UUID_DEVICE_INFORMATION_SERVICE);
Rohit Grover 3:24e2b056d229 53 GattCharacteristic deviceManufacturer (
Rohit Grover 3:24e2b056d229 54 GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
rgrover1 7:daab8ba5139e 55 sizeof(deviceName), /* initialLen */
rgrover1 7:daab8ba5139e 56 sizeof(deviceName), /* maxLen */
Rohit Grover 3:24e2b056d229 57 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
ktownsend 0:87a7fc231fae 58
rgrover1 7:daab8ba5139e 59 static const uint16_t uuid16_list[] = {
rgrover1 7:daab8ba5139e 60 GattService::UUID_BATTERY_SERVICE,
rgrover1 7:daab8ba5139e 61 GattService::UUID_DEVICE_INFORMATION_SERVICE,
rgrover1 7:daab8ba5139e 62 GattService::UUID_HEART_RATE_SERVICE
rgrover1 7:daab8ba5139e 63 };
ktownsend 0:87a7fc231fae 64
ktownsend 0:87a7fc231fae 65 void tickerCallback(void);
ktownsend 0:87a7fc231fae 66
rgrover1 7:daab8ba5139e 67 void timeoutCallback(void)
ktownsend 0:87a7fc231fae 68 {
rgrover1 7:daab8ba5139e 69 pc.printf("Advertising Timeout!\n\r");
rgrover1 7:daab8ba5139e 70 // Restart the advertising process with a much slower interval,
rgrover1 7:daab8ba5139e 71 // only start advertising again after a button press, etc.
rgrover1 7:daab8ba5139e 72 }
ktownsend 0:87a7fc231fae 73
rgrover1 7:daab8ba5139e 74 void connectionCallback(void)
rgrover1 7:daab8ba5139e 75 {
rgrover1 7:daab8ba5139e 76 pc.printf("Connected!\n\r");
rgrover1 7:daab8ba5139e 77 }
ktownsend 0:87a7fc231fae 78
rgrover1 7:daab8ba5139e 79 void disconnectionCallback(void)
ktownsend 0:87a7fc231fae 80 {
rgrover1 7:daab8ba5139e 81 pc.printf("Disconnected!\n\r");
rgrover1 7:daab8ba5139e 82 pc.printf("Restarting the advertising process\n\r");
rgrover1 7:daab8ba5139e 83 ble.startAdvertising();
rgrover1 7:daab8ba5139e 84 }
Rohit Grover 3:24e2b056d229 85
rgrover1 7:daab8ba5139e 86 void updatesEnabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 87 {
rgrover1 7:daab8ba5139e 88 if (charHandle == hrmRate.getHandle()) {
rgrover1 7:daab8ba5139e 89 pc.printf("Heart rate notify enabled\n\r");
ktownsend 0:87a7fc231fae 90 }
rgrover1 7:daab8ba5139e 91 }
ktownsend 0:87a7fc231fae 92
rgrover1 7:daab8ba5139e 93 void updatesDisabledCallback(uint16_t charHandle)
rgrover1 7:daab8ba5139e 94 {
rgrover1 7:daab8ba5139e 95 if (charHandle == hrmRate.getHandle()) {
rgrover1 7:daab8ba5139e 96 pc.printf("Heart rate notify disabled\n\r");
ktownsend 0:87a7fc231fae 97 }
rgrover1 7:daab8ba5139e 98 }
ktownsend 0:87a7fc231fae 99
ktownsend 0:87a7fc231fae 100 /**************************************************************************/
ktownsend 0:87a7fc231fae 101 /*!
ktownsend 0:87a7fc231fae 102 @brief Program entry point
ktownsend 0:87a7fc231fae 103 */
ktownsend 0:87a7fc231fae 104 /**************************************************************************/
ktownsend 0:87a7fc231fae 105 int main(void)
ktownsend 0:87a7fc231fae 106 {
ktownsend 0:87a7fc231fae 107 /* Setup blinky: led1 is toggled in main, led2 is toggled via Ticker */
Rohit Grover 3:24e2b056d229 108 led1 = 1;
Rohit Grover 3:24e2b056d229 109 led2 = 1;
ktownsend 0:87a7fc231fae 110 flipper.attach(&tickerCallback, 1.0);
ktownsend 0:87a7fc231fae 111
ktownsend 0:87a7fc231fae 112 /* Setup the local GAP/GATT event handlers */
rgrover1 7:daab8ba5139e 113 ble.onTimeout(timeoutCallback);
rgrover1 7:daab8ba5139e 114 ble.onConnection(connectionCallback);
rgrover1 7:daab8ba5139e 115 ble.onDisconnection(disconnectionCallback);
rgrover1 7:daab8ba5139e 116 ble.onUpdatesEnabled(updatesEnabledCallback);
rgrover1 7:daab8ba5139e 117 ble.onUpdatesDisabled(updatesDisabledCallback);
ktownsend 0:87a7fc231fae 118
ktownsend 0:87a7fc231fae 119 /* Initialise the nRF51822 */
ktownsend 0:87a7fc231fae 120 pc.printf("Initialising the nRF51822\n\r");
rgrover1 7:daab8ba5139e 121 ble.init();
ktownsend 0:87a7fc231fae 122
ktownsend 0:87a7fc231fae 123 /* Add BLE-Only flag and complete service list to the advertising data */
rgrover1 7:daab8ba5139e 124 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED);
rgrover1 7:daab8ba5139e 125 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
rgrover1 7:daab8ba5139e 126 ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT);
ktownsend 0:87a7fc231fae 127
ktownsend 0:87a7fc231fae 128 /* Add the Battery Level service */
ktownsend 0:87a7fc231fae 129 battService.addCharacteristic(battLevel);
rgrover1 7:daab8ba5139e 130 ble.addService(battService);
ktownsend 0:87a7fc231fae 131
ktownsend 0:87a7fc231fae 132 /* Add the Device Information service */
ktownsend 0:87a7fc231fae 133 deviceInformationService.addCharacteristic(deviceManufacturer);
rgrover1 7:daab8ba5139e 134 ble.addService(deviceInformationService);
Rohit Grover 3:24e2b056d229 135
ktownsend 0:87a7fc231fae 136 /* Add the Heart Rate service */
ktownsend 0:87a7fc231fae 137 hrmService.addCharacteristic(hrmRate);
ktownsend 0:87a7fc231fae 138 hrmService.addCharacteristic(hrmLocation);
rgrover1 7:daab8ba5139e 139 ble.addService(hrmService);
Rohit Grover 3:24e2b056d229 140
rgrover1 7:daab8ba5139e 141 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 7:daab8ba5139e 142 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
rgrover1 7:daab8ba5139e 143 ble.startAdvertising();
Rohit Grover 3:24e2b056d229 144
Rohit Grover 3:24e2b056d229 145 /* Wait until we are connected to a central device before updating
Rohit Grover 3:24e2b056d229 146 * anything */
ktownsend 0:87a7fc231fae 147 pc.printf("Waiting for a connection ...");
rgrover1 7:daab8ba5139e 148 while (!ble.getGapState().connected) {
rgrover1 7:daab8ba5139e 149 ble.waitForEvent();
ktownsend 0:87a7fc231fae 150 }
ktownsend 0:87a7fc231fae 151 pc.printf("Connected!\n\r");
Rohit Grover 3:24e2b056d229 152
rgrover1 7:daab8ba5139e 153 /* Now that we're live, update the battery level characteristic, and
rgrover1 7:daab8ba5139e 154 * change the device manufacturer characteristic to 'mbed' */
rgrover1 7:daab8ba5139e 155 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
rgrover1 7:daab8ba5139e 156 ble.updateCharacteristicValue(deviceManufacturer.getHandle(), deviceName, sizeof(deviceName));
ktownsend 0:87a7fc231fae 157
ktownsend 0:87a7fc231fae 158 /* Set the heart rate monitor location (one time only) */
ktownsend 0:87a7fc231fae 159 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */
rgrover1 7:daab8ba5139e 160 uint8_t location = 0x03; /* Finger */
ktownsend 0:87a7fc231fae 161 uint8_t hrmCounter = 100;
rgrover1 7:daab8ba5139e 162 ble.updateCharacteristicValue(hrmLocation.getHandle(), (uint8_t *)&location, sizeof(location));
ktownsend 0:87a7fc231fae 163
ktownsend 0:87a7fc231fae 164 /* Do blinky on LED1 while we're waiting for BLE events */
Rohit Grover 3:24e2b056d229 165 for (;; ) {
Rohit Grover 3:24e2b056d229 166 led1 = !led1;
Rohit Grover 3:24e2b056d229 167 wait(1);
Rohit Grover 3:24e2b056d229 168
Rohit Grover 3:24e2b056d229 169 /* Update battery level */
Rohit Grover 3:24e2b056d229 170 batt++;
Rohit Grover 3:24e2b056d229 171 if (batt > 100) {
Rohit Grover 3:24e2b056d229 172 batt = 72;
Rohit Grover 3:24e2b056d229 173 }
rgrover1 7:daab8ba5139e 174 ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
ktownsend 0:87a7fc231fae 175
rgrover1 7:daab8ba5139e 176 /* Update the HRM measurement */
rgrover1 7:daab8ba5139e 177 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
rgrover1 7:daab8ba5139e 178 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
Rohit Grover 3:24e2b056d229 179 hrmCounter++;
Rohit Grover 3:24e2b056d229 180 if (hrmCounter == 175) {
Rohit Grover 3:24e2b056d229 181 hrmCounter = 100;
Rohit Grover 3:24e2b056d229 182 }
Rohit Grover 3:24e2b056d229 183 uint8_t bpm[2] = {0x00, hrmCounter};
rgrover1 7:daab8ba5139e 184 ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm));
ktownsend 0:87a7fc231fae 185 }
ktownsend 0:87a7fc231fae 186 }
ktownsend 0:87a7fc231fae 187
ktownsend 0:87a7fc231fae 188 /**************************************************************************/
ktownsend 0:87a7fc231fae 189 /*!
ktownsend 0:87a7fc231fae 190 @brief Ticker callback to switch led2 state
ktownsend 0:87a7fc231fae 191 */
ktownsend 0:87a7fc231fae 192 /**************************************************************************/
ktownsend 0:87a7fc231fae 193 void tickerCallback(void)
ktownsend 0:87a7fc231fae 194 {
ktownsend 0:87a7fc231fae 195 led2 = !led2;
ktownsend 0:87a7fc231fae 196 }