Delta
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
Diff: main.cpp
- Revision:
- 3:24e2b056d229
- Parent:
- 0:87a7fc231fae
- Child:
- 4:12890f3c62eb
--- a/main.cpp Thu Apr 03 01:09:02 2014 +0000
+++ b/main.cpp Wed May 21 14:39:35 2014 +0100
@@ -17,43 +17,56 @@
#include "mbed.h"
#include "nRF51822n.h"
-nRF51822n nrf; /* BLE radio driver */
+nRF51822n nrf; /* BLE radio driver */
-DigitalOut led1(LED1);
-DigitalOut led2(LED2);
-Ticker flipper;
-Serial pc(USBTX,USBRX);
+DigitalOut led1(LED1);
+DigitalOut led2(LED2);
+Ticker flipper;
+Serial pc(USBTX, USBRX);
/* Battery Level Service */
-uint8_t batt = 72; /* Battery level */
+uint8_t batt = 72; /* Battery level */
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);
+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);
/* 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 );
+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);
/* Device Information service */
-uint8_t deviceName[4] = { 'm', 'b', 'e', 'd' };
-GattService deviceInformationService ( GattService::UUID_DEVICE_INFORMATION_SERVICE );
-GattCharacteristic deviceManufacturer ( GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
- sizeof(deviceName), sizeof(deviceName),
- GattCharacteristic::BLE_GATT_CHAR_PROPERTIES_READ);
+uint8_t deviceName[4] = {'m', 'b', 'e', 'd'};
+GattService deviceInformationService (
+ GattService::UUID_DEVICE_INFORMATION_SERVICE);
+GattCharacteristic deviceManufacturer (
+ GattCharacteristic::UUID_MANUFACTURER_NAME_STRING_CHAR,
+ sizeof(deviceName),
+ sizeof(deviceName),
+ 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 };
+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};
void tickerCallback(void);
@@ -65,12 +78,12 @@
/**************************************************************************/
class GapEventHandler : public GapEvents
{
- virtual void onTimeout(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.
- }
+ }
virtual void onConnected(void)
{
@@ -95,21 +108,19 @@
{
//virtual void onDataSent(uint16_t charHandle) {}
//virtual void onDataWritten(uint16_t charHandle) {}
-
+
virtual void onUpdatesEnabled(uint16_t charHandle)
{
- if (charHandle == hrmRate.handle)
- {
- pc.printf("Heart rate notify enabled\n\r");
- }
+ if (charHandle == hrmRate.handle) {
+ pc.printf("Heart rate notify enabled\n\r");
+ }
}
virtual void onUpdatesDisabled(uint16_t charHandle)
{
- if (charHandle == hrmRate.handle)
- {
- pc.printf("Heart rate notify disabled\n\r");
- }
+ if (charHandle == hrmRate.handle) {
+ pc.printf("Heart rate notify disabled\n\r");
+ }
}
//virtual void onConfirmationReceived(uint16_t charHandle) {}
@@ -124,10 +135,10 @@
{
*(uint32_t *)0x40000504 = 0xC007FFDF;
*(uint32_t *)0x40006C18 = 0x00008000;
-
+
/* Setup blinky: led1 is toggled in main, led2 is toggled via Ticker */
- led1=1;
- led2=1;
+ led1 = 1;
+ led2 = 1;
flipper.attach(&tickerCallback, 1.0);
/* Setup the local GAP/GATT event handlers */
@@ -143,8 +154,8 @@
/* 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.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);
@@ -155,51 +166,61 @@
/* Add the Device Information service */
deviceInformationService.addCharacteristic(deviceManufacturer);
nrf.getGattServer().addService(deviceInformationService);
-
+
/* Add the Heart Rate service */
hrmService.addCharacteristic(hrmRate);
hrmService.addCharacteristic(hrmLocation);
nrf.getGattServer().addService(hrmService);
-
+
/* Start advertising (make sure you've added all your data first) */
nrf.getGap().startAdvertising(advParams);
-
- /* Wait until we are connected to a central device before updating anything */
+
+ /* Wait until we are connected to a central device before updating
+ * anything */
pc.printf("Waiting for a connection ...");
- while(!nrf.getGap().state.connected)
- {
+ while (!nrf.getGap().state.connected) {
}
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.handle, (uint8_t*)&batt, sizeof(batt));
- nrf.getGattServer().updateValue(deviceManufacturer.handle, deviceName, sizeof(deviceName));
+ nrf.getGattServer().updateValue(battLevel.handle, (uint8_t *)&batt,
+ sizeof(batt));
+ nrf.getGattServer().updateValue(deviceManufacturer.handle,
+ 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 hrmCounter = 100;
- nrf.getGattServer().updateValue(hrmLocation.handle, (uint8_t*)&location, sizeof(location));
+ nrf.getGattServer().updateValue(hrmLocation.handle,
+ (uint8_t *)&location,
+ sizeof(location));
/* Do blinky on LED1 while we're waiting for BLE events */
- for (;;)
- {
- led1 = !led1;
- wait(1);
-
- /* Update battery level */
- batt++;
- if (batt > 100) batt = 72;
- nrf.getGattServer().updateValue(battLevel.handle, (uint8_t*)&batt, sizeof(batt));
+ for (;; ) {
+ led1 = !led1;
+ wait(1);
+
+ /* Update battery level */
+ batt++;
+ if (batt > 100) {
+ batt = 72;
+ }
+ nrf.getGattServer().updateValue(battLevel.handle,
+ (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 */
- hrmCounter++;
- if (hrmCounter == 175) hrmCounter = 100;
- uint8_t bpm[2] = { 0x00, hrmCounter };
- nrf.getGattServer().updateValue(hrmRate.handle, bpm, sizeof(bpm));
+ hrmCounter++;
+ if (hrmCounter == 175) {
+ hrmCounter = 100;
+ }
+ uint8_t bpm[2] = {0x00, hrmCounter};
+ nrf.getGattServer().updateValue(hrmRate.handle, bpm, sizeof(bpm));
}
}