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
Diff: main.cpp
- Revision:
- 22:299658c5fa3c
- Parent:
- 20:58bff62d0f7a
- Child:
- 26:e6ad33b227c6
--- a/main.cpp Wed Jun 11 14:52:56 2014 +0100 +++ b/main.cpp Thu Jun 12 08:12:51 2014 +0100 @@ -18,12 +18,10 @@ #include "BLEDevice.h" BLEDevice ble; - DigitalOut led1(LED1); #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console; - * it will have an impact on code-size and power - * consumption. */ + * it will have an impact on code-size and power consumption. */ #if NEED_CONSOLE_OUTPUT Serial pc(USBTX, USBRX); @@ -32,15 +30,6 @@ #define DEBUG(...) /* nothing */ #endif /* #if NEED_CONSOLE_OUTPUT */ -/* Battery Level Service */ -uint8_t batt = 72; /* Battery level */ -GattCharacteristic battLevel (GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, &batt, sizeof(batt), sizeof(batt), - GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); -GattCharacteristic *battChars[] = { - &battLevel, -}; -GattService battService (GattService::UUID_BATTERY_SERVICE, battChars, sizeof(battChars) / sizeof(GattCharacteristic *)); - /* Heart Rate Service */ /* Service: https://developer.bluetooth.org/gatt/services/Pages/ServiceViewer.aspx?u=org.bluetooth.service.heart_rate.xml */ /* HRM Char: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */ @@ -53,28 +42,9 @@ GattCharacteristic hrmLocation(GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, (uint8_t *)&location, sizeof(location), sizeof(location), GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); -GattCharacteristic *hrmChars[] = { - &hrmRate, &hrmLocation, -}; +GattCharacteristic *hrmChars[] = {&hrmRate, &hrmLocation, }; GattService hrmService(GattService::UUID_HEART_RATE_SERVICE, hrmChars, sizeof(hrmChars) / sizeof(GattCharacteristic *)); -/* Device Information service */ -static const uint8_t deviceName[] = {'m', 'b', 'e', 'd'}; -GattCharacteristic deviceManufacturer (GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR, - (uint8_t *)deviceName, sizeof(deviceName), sizeof(deviceName), - GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); -GattCharacteristic *devInfoChars[] = { - &deviceManufacturer, -}; -GattService deviceInformationService (GattService::UUID_DEVICE_INFORMATION_SERVICE, - devInfoChars, sizeof(devInfoChars) / sizeof(GattCharacteristic *)); - -static const uint16_t uuid16_list[] = { - GattService::UUID_BATTERY_SERVICE, - GattService::UUID_DEVICE_INFORMATION_SERVICE, - GattService::UUID_HEART_RATE_SERVICE -}; - void disconnectionCallback(void) { DEBUG("Disconnected!\n\r"); @@ -83,21 +53,13 @@ } /** - * Runs once a second in interrupt context triggered by the 'ticker'; updates - * battery level and hrmCounter if there is a connection. + * Triggered periodically by the 'ticker' interrupt; updates hrmCounter. */ void periodicCallback(void) { led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ if (ble.getGapState().connected) { - /* Update battery level */ - batt++; - if (batt > 100) { - batt = 72; - } - ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt)); - /* Update the HRM measurement */ /* First byte = 8-bit values, no extra info, Second byte = uint8_t HRM value */ /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.heart_rate_measurement.xml */ @@ -118,20 +80,15 @@ DEBUG("Initialising the nRF51822\n\r"); ble.init(); - - /* Setup the local GAP/GATT event handlers */ ble.onDisconnection(disconnectionCallback); /* setup advertising */ ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED); - ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); ble.accumulateAdvertisingPayload(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT); ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */ ble.startAdvertising(); - ble.addService(deviceInformationService); - ble.addService(battService); ble.addService(hrmService); while (true) {