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@37:d310a72115c7, 2014-07-11 (annotated)

Committer:
Rohit Grover
Date:
Fri Jul 11 11:34:55 2014 +0100
Revision:
37:d310a72115c7
Parent:
36:ea2a1b4f51c1
Child:
39:6390604f904c
updated heart-rate demo to use the new connectionParams APIs

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"
Rohit Grover 34:44dc6efc0b50 19 #include "ble_hrs.h"
ktownsend 0:87a7fc231fae 20
Rohit Grover 10:2436164b692e 21 BLEDevice ble;
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 22:299658c5fa3c 25 * it will have an impact on code-size and power consumption. */
Rohit Grover 9:5d693381e883 26
Rohit Grover 9:5d693381e883 27 #if NEED_CONSOLE_OUTPUT
Rohit Grover 9:5d693381e883 28 Serial pc(USBTX, USBRX);
Rohit Grover 9:5d693381e883 29 #define DEBUG(...) { pc.printf(__VA_ARGS__); }
Rohit Grover 9:5d693381e883 30 #else
Rohit Grover 9:5d693381e883 31 #define DEBUG(...) /* nothing */
Rohit Grover 9:5d693381e883 32 #endif /* #if NEED_CONSOLE_OUTPUT */
ktownsend 0:87a7fc231fae 33
Rohit Grover 29:76d865c718a6 34 const static char DEVICE_NAME[] = "Nordic_HRM";
Rohit Grover 26:e6ad33b227c6 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 18:8a2e313f49cb 40 static uint8_t hrmCounter = 100;
Rohit Grover 18:8a2e313f49cb 41 static uint8_t bpm[2] = {0x00, hrmCounter};
Rohit Grover 20:58bff62d0f7a 42 GattCharacteristic hrmRate(GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, bpm, sizeof(bpm), sizeof(bpm),
Rohit Grover 20:58bff62d0f7a 43 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY);
Rohit Grover 34:44dc6efc0b50 44 static uint8_t location = BLE_HRS_BODY_SENSOR_LOCATION_FINGER;
Rohit Grover 18:8a2e313f49cb 45 GattCharacteristic hrmLocation(GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR,
Rohit Grover 18:8a2e313f49cb 46 (uint8_t *)&location, sizeof(location), sizeof(location),
Rohit Grover 18:8a2e313f49cb 47 GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
Rohit Grover 22:299658c5fa3c 48 GattCharacteristic *hrmChars[] = {&hrmRate, &hrmLocation, };
Rohit Grover 19:1713b11694ea 49 GattService hrmService(GattService::UUID_HEART_RATE_SERVICE, hrmChars, sizeof(hrmChars) / sizeof(GattCharacteristic *));
ktownsend 0:87a7fc231fae 50
Rohit Grover 30:3dc9e6f2bc8c 51 static const uint16_t uuid16_list[] = {GattService::UUID_HEART_RATE_SERVICE};
Rohit Grover 27:97adf2b76b9c 52
Rohit Grover 36:ea2a1b4f51c1 53 static volatile bool triggerSensorPolling = false; /* set to high periodically to indicate to the main thread that
Rohit Grover 36:ea2a1b4f51c1 54 * polling is necessary. */
Rohit Grover 37:d310a72115c7 55 static Gap::ConnectionParams_t connectionParams;
Rohit Grover 36:ea2a1b4f51c1 56
Rohit Grover 35:ba3e3174331a 57 void disconnectionCallback(Gap::Handle_t handle)
ktownsend 0:87a7fc231fae 58 {
Rohit Grover 35:ba3e3174331a 59 DEBUG("Disconnected handle %u!\n\r", handle);
Rohit Grover 9:5d693381e883 60 DEBUG("Restarting the advertising process\n\r");
rgrover1 7:daab8ba5139e 61 ble.startAdvertising();
rgrover1 7:daab8ba5139e 62 }
Rohit Grover 3:24e2b056d229 63
Rohit Grover 37:d310a72115c7 64 void onConnectionCallback(Gap::Handle_t handle)
Rohit Grover 37:d310a72115c7 65 {
Rohit Grover 37:d310a72115c7 66 DEBUG("connected. Got handle %u\r\n", handle);
Rohit Grover 37:d310a72115c7 67
Rohit Grover 37:d310a72115c7 68 connectionParams.slaveLatency = 1;
Rohit Grover 37:d310a72115c7 69 if (ble.updateConnectionParams(handle, &connectionParams) != BLE_ERROR_NONE) {
Rohit Grover 37:d310a72115c7 70 DEBUG("failed to update connection paramter\r\n");
Rohit Grover 37:d310a72115c7 71 }
Rohit Grover 37:d310a72115c7 72 }
Rohit Grover 37:d310a72115c7 73
Rohit Grover 13:3ca2045597e7 74 /**
Rohit Grover 36:ea2a1b4f51c1 75 * Triggered periodically by the 'ticker' interrupt.
Rohit Grover 13:3ca2045597e7 76 */
Rohit Grover 11:1d9aafee4984 77 void periodicCallback(void)
Rohit Grover 11:1d9aafee4984 78 {
Rohit Grover 11:1d9aafee4984 79 led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
Rohit Grover 36:ea2a1b4f51c1 80 triggerSensorPolling = true; /* Note that the periodicCallback() executes in
Rohit Grover 36:ea2a1b4f51c1 81 * interrupt context, so it is safer to do
Rohit Grover 36:ea2a1b4f51c1 82 * heavy-weight sensor polling from the main
Rohit Grover 36:ea2a1b4f51c1 83 * thread.*/
Rohit Grover 11:1d9aafee4984 84 }
Rohit Grover 11:1d9aafee4984 85
ktownsend 0:87a7fc231fae 86 int main(void)
ktownsend 0:87a7fc231fae 87 {
Rohit Grover 3:24e2b056d229 88 led1 = 1;
Rohit Grover 11:1d9aafee4984 89 Ticker ticker;
Rohit Grover 11:1d9aafee4984 90 ticker.attach(periodicCallback, 1);
ktownsend 0:87a7fc231fae 91
Rohit Grover 15:7ba28817e31e 92 DEBUG("Initialising the nRF51822\n\r");
Rohit Grover 15:7ba28817e31e 93 ble.init();
rgrover1 7:daab8ba5139e 94 ble.onDisconnection(disconnectionCallback);
Rohit Grover 37:d310a72115c7 95 ble.onConnection(onConnectionCallback);
Rohit Grover 37:d310a72115c7 96
Rohit Grover 37:d310a72115c7 97 ble.getPreferredConnectionParams(&connectionParams);
ktownsend 0:87a7fc231fae 98
Rohit Grover 15:7ba28817e31e 99 /* setup advertising */
Rohit Grover 29:76d865c718a6 100 ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
Rohit Grover 27:97adf2b76b9c 101 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t*)uuid16_list, sizeof(uuid16_list));
rgrover1 7:daab8ba5139e 102 ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT);
Rohit Grover 29:76d865c718a6 103 ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
rgrover1 7:daab8ba5139e 104 ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
rgrover1 7:daab8ba5139e 105 ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
rgrover1 7:daab8ba5139e 106 ble.startAdvertising();
Rohit Grover 3:24e2b056d229 107
Rohit Grover 11:1d9aafee4984 108 ble.addService(hrmService);
ktownsend 0:87a7fc231fae 109
Rohit Grover 11:1d9aafee4984 110 while (true) {
Rohit Grover 36:ea2a1b4f51c1 111 if (triggerSensorPolling) {
Rohit Grover 36:ea2a1b4f51c1 112 triggerSensorPolling = false;
Rohit Grover 36:ea2a1b4f51c1 113
Rohit Grover 36:ea2a1b4f51c1 114 /* Do blocking calls or whatever is necessary for sensor polling. */
Rohit Grover 36:ea2a1b4f51c1 115 /* In our case, we simply update the dummy HRM measurement. */
Rohit Grover 36:ea2a1b4f51c1 116 hrmCounter++;
Rohit Grover 36:ea2a1b4f51c1 117 if (hrmCounter == 175) {
Rohit Grover 36:ea2a1b4f51c1 118 hrmCounter = 100;
Rohit Grover 36:ea2a1b4f51c1 119 }
Rohit Grover 36:ea2a1b4f51c1 120
Rohit Grover 36:ea2a1b4f51c1 121 if (ble.getGapState().connected) {
Rohit Grover 36:ea2a1b4f51c1 122 /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */
Rohit Grover 36:ea2a1b4f51c1 123 /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */
Rohit Grover 36:ea2a1b4f51c1 124 bpm[1] = hrmCounter;
Rohit Grover 36:ea2a1b4f51c1 125 ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm));
Rohit Grover 36:ea2a1b4f51c1 126 }
Rohit Grover 36:ea2a1b4f51c1 127 } else {
Rohit Grover 36:ea2a1b4f51c1 128 ble.waitForEvent();
Rohit Grover 36:ea2a1b4f51c1 129 }
ktownsend 0:87a7fc231fae 130 }
ktownsend 0:87a7fc231fae 131 }