Demo Glucose Service
Dependencies: BLE_API mbed nRF51822
Fork of BLE_HeartRate by
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@36:ea2a1b4f51c1, 2014-07-11 (annotated)
- Committer:
- Rohit Grover
- Date:
- Fri Jul 11 11:12:42 2014 +0100
- Revision:
- 36:ea2a1b4f51c1
- Parent:
- 35:ba3e3174331a
- Child:
- 37:d310a72115c7
change hrm demo to do sensor polling from the main thread
Who changed what in which revision?
User | Revision | Line number | New 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 |
36:ea2a1b4f51c1 | 55 | |
Rohit Grover |
35:ba3e3174331a | 56 | void disconnectionCallback(Gap::Handle_t handle) |
ktownsend | 0:87a7fc231fae | 57 | { |
Rohit Grover |
35:ba3e3174331a | 58 | DEBUG("Disconnected handle %u!\n\r", handle); |
Rohit Grover |
9:5d693381e883 | 59 | DEBUG("Restarting the advertising process\n\r"); |
rgrover1 | 7:daab8ba5139e | 60 | ble.startAdvertising(); |
rgrover1 | 7:daab8ba5139e | 61 | } |
Rohit Grover |
3:24e2b056d229 | 62 | |
Rohit Grover |
13:3ca2045597e7 | 63 | /** |
Rohit Grover |
36:ea2a1b4f51c1 | 64 | * Triggered periodically by the 'ticker' interrupt. |
Rohit Grover |
13:3ca2045597e7 | 65 | */ |
Rohit Grover |
11:1d9aafee4984 | 66 | void periodicCallback(void) |
Rohit Grover |
11:1d9aafee4984 | 67 | { |
Rohit Grover |
11:1d9aafee4984 | 68 | led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ |
Rohit Grover |
36:ea2a1b4f51c1 | 69 | triggerSensorPolling = true; /* Note that the periodicCallback() executes in |
Rohit Grover |
36:ea2a1b4f51c1 | 70 | * interrupt context, so it is safer to do |
Rohit Grover |
36:ea2a1b4f51c1 | 71 | * heavy-weight sensor polling from the main |
Rohit Grover |
36:ea2a1b4f51c1 | 72 | * thread.*/ |
Rohit Grover |
11:1d9aafee4984 | 73 | } |
Rohit Grover |
11:1d9aafee4984 | 74 | |
ktownsend | 0:87a7fc231fae | 75 | int main(void) |
ktownsend | 0:87a7fc231fae | 76 | { |
Rohit Grover |
3:24e2b056d229 | 77 | led1 = 1; |
Rohit Grover |
11:1d9aafee4984 | 78 | Ticker ticker; |
Rohit Grover |
11:1d9aafee4984 | 79 | ticker.attach(periodicCallback, 1); |
ktownsend | 0:87a7fc231fae | 80 | |
Rohit Grover |
15:7ba28817e31e | 81 | DEBUG("Initialising the nRF51822\n\r"); |
Rohit Grover |
15:7ba28817e31e | 82 | ble.init(); |
rgrover1 | 7:daab8ba5139e | 83 | ble.onDisconnection(disconnectionCallback); |
ktownsend | 0:87a7fc231fae | 84 | |
Rohit Grover |
15:7ba28817e31e | 85 | /* setup advertising */ |
Rohit Grover |
29:76d865c718a6 | 86 | ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); |
Rohit Grover |
27:97adf2b76b9c | 87 | ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t*)uuid16_list, sizeof(uuid16_list)); |
rgrover1 | 7:daab8ba5139e | 88 | ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT); |
Rohit Grover |
29:76d865c718a6 | 89 | ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); |
rgrover1 | 7:daab8ba5139e | 90 | ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); |
rgrover1 | 7:daab8ba5139e | 91 | ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */ |
rgrover1 | 7:daab8ba5139e | 92 | ble.startAdvertising(); |
Rohit Grover |
3:24e2b056d229 | 93 | |
Rohit Grover |
11:1d9aafee4984 | 94 | ble.addService(hrmService); |
ktownsend | 0:87a7fc231fae | 95 | |
Rohit Grover |
11:1d9aafee4984 | 96 | while (true) { |
Rohit Grover |
36:ea2a1b4f51c1 | 97 | if (triggerSensorPolling) { |
Rohit Grover |
36:ea2a1b4f51c1 | 98 | triggerSensorPolling = false; |
Rohit Grover |
36:ea2a1b4f51c1 | 99 | |
Rohit Grover |
36:ea2a1b4f51c1 | 100 | /* Do blocking calls or whatever is necessary for sensor polling. */ |
Rohit Grover |
36:ea2a1b4f51c1 | 101 | /* In our case, we simply update the dummy HRM measurement. */ |
Rohit Grover |
36:ea2a1b4f51c1 | 102 | hrmCounter++; |
Rohit Grover |
36:ea2a1b4f51c1 | 103 | if (hrmCounter == 175) { |
Rohit Grover |
36:ea2a1b4f51c1 | 104 | hrmCounter = 100; |
Rohit Grover |
36:ea2a1b4f51c1 | 105 | } |
Rohit Grover |
36:ea2a1b4f51c1 | 106 | |
Rohit Grover |
36:ea2a1b4f51c1 | 107 | if (ble.getGapState().connected) { |
Rohit Grover |
36:ea2a1b4f51c1 | 108 | /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */ |
Rohit Grover |
36:ea2a1b4f51c1 | 109 | /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */ |
Rohit Grover |
36:ea2a1b4f51c1 | 110 | bpm[1] = hrmCounter; |
Rohit Grover |
36:ea2a1b4f51c1 | 111 | ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm)); |
Rohit Grover |
36:ea2a1b4f51c1 | 112 | } |
Rohit Grover |
36:ea2a1b4f51c1 | 113 | } else { |
Rohit Grover |
36:ea2a1b4f51c1 | 114 | ble.waitForEvent(); |
Rohit Grover |
36:ea2a1b4f51c1 | 115 | } |
ktownsend | 0:87a7fc231fae | 116 | } |
ktownsend | 0:87a7fc231fae | 117 | } |