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:
- 7:daab8ba5139e
- Parent:
- 5:b0baff4a124f
- Child:
- 8:49d8ee0aac11
--- a/main.cpp Thu Jun 05 09:17:59 2014 +0000 +++ b/main.cpp Tue Jun 10 09:21:43 2014 +0000 @@ -15,9 +15,9 @@ */ #include "mbed.h" -#include "nRF51822n.h" +#include "BLEPeripheral.h" -nRF51822n nrf; /* BLE radio driver */ +BLEPeripheral ble; /* BLE radio driver */ DigitalOut led1(LED1); DigitalOut led2(LED2); @@ -26,105 +26,76 @@ /* Battery Level Service */ uint8_t batt = 72; /* Battery level */ -uint8_t read_batt = 0; /* Variable to hold battery level reads */ +uint8_t read_batt = 0; /* Variable to hold battery level reads */ GattService battService (GattService::UUID_BATTERY_SERVICE); GattCharacteristic battLevel (GattCharacteristic::UUID_BATTERY_LEVEL_CHAR, - 1, - 1, - GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY | - GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); + 1, /* initialLen */ + 1, /* maxLen */ + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY | GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); /* 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 */ /* Location: https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */ GattService hrmService (GattService::UUID_HEART_RATE_SERVICE); -GattCharacteristic hrmRate ( - GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, - 2, - 3, - GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); -GattCharacteristic hrmLocation ( - GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, - 1, - 1, - GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); +GattCharacteristic hrmRate (GattCharacteristic::UUID_HEART_RATE_MEASUREMENT_CHAR, + 2, /* initialLen */ + 3, /* maxLen */ + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_NOTIFY); +GattCharacteristic hrmLocation (GattCharacteristic::UUID_BODY_SENSOR_LOCATION_CHAR, + 1, /* initialLen */ + 1, /* maxLen */ + GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); /* Device Information service */ uint8_t deviceName[4] = {'m', 'b', 'e', 'd'}; -GattService deviceInformationService ( - GattService::UUID_DEVICE_INFORMATION_SERVICE); +GattService deviceInformationService (GattService::UUID_DEVICE_INFORMATION_SERVICE); GattCharacteristic deviceManufacturer ( GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR, - sizeof(deviceName), - sizeof(deviceName), + sizeof(deviceName), /* initialLen */ + sizeof(deviceName), /* maxLen */ GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ); -/* Advertising data and parameters */ -GapAdvertisingData advData; -GapAdvertisingData scanResponse; -GapAdvertisingParams advParams (GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); -uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE, - GattService::UUID_DEVICE_INFORMATION_SERVICE, - GattService::UUID_HEART_RATE_SERVICE}; +static const uint16_t uuid16_list[] = { + GattService::UUID_BATTERY_SERVICE, + GattService::UUID_DEVICE_INFORMATION_SERVICE, + GattService::UUID_HEART_RATE_SERVICE +}; void tickerCallback(void); -/**************************************************************************/ -/*! - @brief This custom class can be used to override any GapEvents - that you are interested in handling on an application level. -*/ -/**************************************************************************/ -class GapEventHandler : public GapEvents +void timeoutCallback(void) { - virtual void onTimeout(void) - { - pc.printf("Advertising Timeout!\n\r"); - // Restart the advertising process with a much slower interval, - // only start advertising again after a button press, etc. - } + pc.printf("Advertising Timeout!\n\r"); + // Restart the advertising process with a much slower interval, + // only start advertising again after a button press, etc. +} - virtual void onConnected(void) - { - pc.printf("Connected!\n\r"); - } - - virtual void onDisconnected(void) - { - pc.printf("Disconnected!\n\r"); - pc.printf("Restarting the advertising process\n\r"); - nrf.getGap().startAdvertising(advParams); - } -}; +void connectionCallback(void) +{ + pc.printf("Connected!\n\r"); +} -/**************************************************************************/ -/*! - @brief This custom class can be used to override any GattServerEvents - that you are interested in handling on an application level. -*/ -/**************************************************************************/ -class GattServerEventHandler : public GattServerEvents +void disconnectionCallback(void) { - //virtual void onDataSent(uint16_t charHandle) {} - //virtual void onDataWritten(uint16_t charHandle) {} + pc.printf("Disconnected!\n\r"); + pc.printf("Restarting the advertising process\n\r"); + ble.startAdvertising(); +} - virtual void onUpdatesEnabled(uint16_t charHandle) - { - if (charHandle == hrmRate.getHandle()) { - pc.printf("Heart rate notify enabled\n\r"); - } +void updatesEnabledCallback(uint16_t charHandle) +{ + if (charHandle == hrmRate.getHandle()) { + pc.printf("Heart rate notify enabled\n\r"); } +} - virtual void onUpdatesDisabled(uint16_t charHandle) - { - if (charHandle == hrmRate.getHandle()) { - pc.printf("Heart rate notify disabled\n\r"); - } +void updatesDisabledCallback(uint16_t charHandle) +{ + if (charHandle == hrmRate.getHandle()) { + pc.printf("Heart rate notify disabled\n\r"); } - - //virtual void onConfirmationReceived(uint16_t charHandle) {} -}; +} /**************************************************************************/ /*! @@ -139,61 +110,56 @@ flipper.attach(&tickerCallback, 1.0); /* Setup the local GAP/GATT event handlers */ - nrf.getGap().setEventHandler(new GapEventHandler()); - nrf.getGattServer().setEventHandler(new GattServerEventHandler()); + ble.onTimeout(timeoutCallback); + ble.onConnection(connectionCallback); + ble.onDisconnection(disconnectionCallback); + ble.onUpdatesEnabled(updatesEnabledCallback); + ble.onUpdatesDisabled(updatesDisabledCallback); /* Initialise the nRF51822 */ pc.printf("Initialising the nRF51822\n\r"); - nrf.init(); - - /* Make sure we get a clean start */ - nrf.reset(); + ble.init(); /* Add BLE-Only flag and complete service list to the advertising data */ - advData.addFlags(GapAdvertisingData::BREDR_NOT_SUPPORTED); - advData.addData(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, - (uint8_t *)uuid16_list, sizeof(uuid16_list)); - advData.addAppearance(GapAdvertisingData::HEART_RATE_SENSOR_HEART_RATE_BELT); - nrf.getGap().setAdvertisingData(advData, scanResponse); + 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); /* Add the Battery Level service */ battService.addCharacteristic(battLevel); - nrf.getGattServer().addService(battService); + ble.addService(battService); /* Add the Device Information service */ deviceInformationService.addCharacteristic(deviceManufacturer); - nrf.getGattServer().addService(deviceInformationService); + ble.addService(deviceInformationService); /* Add the Heart Rate service */ hrmService.addCharacteristic(hrmRate); hrmService.addCharacteristic(hrmLocation); - nrf.getGattServer().addService(hrmService); + ble.addService(hrmService); - /* Start advertising (make sure you've added all your data first) */ - nrf.getGap().startAdvertising(advParams); + ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); + ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */ + ble.startAdvertising(); /* Wait until we are connected to a central device before updating * anything */ pc.printf("Waiting for a connection ..."); - while (!nrf.getGap().state.connected) { + while (!ble.getGapState().connected) { + ble.waitForEvent(); } pc.printf("Connected!\n\r"); - /* Now that we're live, update the battery level characteristic, and */ - /* change the device manufacturer characteristic to 'mbed' */ - nrf.getGattServer().updateValue(battLevel.getHandle(), (uint8_t *)&batt, - sizeof(batt)); - nrf.getGattServer().updateValue(deviceManufacturer.getHandle(), - deviceName, - sizeof(deviceName)); + /* Now that we're live, update the battery level characteristic, and + * change the device manufacturer characteristic to 'mbed' */ + ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt)); + ble.updateCharacteristicValue(deviceManufacturer.getHandle(), deviceName, sizeof(deviceName)); /* Set the heart rate monitor location (one time only) */ /* See --> https://developer.bluetooth.org/gatt/characteristics/Pages/CharacteristicViewer.aspx?u=org.bluetooth.characteristic.body_sensor_location.xml */ - uint8_t location = 0x03; /* Finger */ + uint8_t location = 0x03; /* Finger */ uint8_t hrmCounter = 100; - nrf.getGattServer().updateValue(hrmLocation.getHandle(), - (uint8_t *)&location, - sizeof(location)); + ble.updateCharacteristicValue(hrmLocation.getHandle(), (uint8_t *)&location, sizeof(location)); /* Do blinky on LED1 while we're waiting for BLE events */ for (;; ) { @@ -205,19 +171,17 @@ if (batt > 100) { batt = 72; } - nrf.getGattServer().updateValue(battLevel.getHandle(), - (uint8_t *)&batt, - sizeof(batt)); + 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 */ + /* 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 */ hrmCounter++; if (hrmCounter == 175) { hrmCounter = 100; } uint8_t bpm[2] = {0x00, hrmCounter}; - nrf.getGattServer().updateValue(hrmRate.getHandle(), bpm, sizeof(bpm)); + ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm)); } }