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

Diff: main.cpp

Revision:
11:1d9aafee4984
Parent:
10:2436164b692e
Child:
13:3ca2045597e7
--- a/main.cpp	Tue Jun 10 13:15:20 2014 +0100
+++ b/main.cpp	Tue Jun 10 14:22:01 2014 +0100
@@ -103,6 +103,31 @@
     }
 }
 
+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 */
+        static uint8_t hrmCounter = 100;
+        hrmCounter++;
+        if (hrmCounter == 175) {
+            hrmCounter = 100;
+        }
+        uint8_t bpm[2] = {0x00, hrmCounter};
+        ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm));
+    }
+}
+
 /**************************************************************************/
 /*!
     @brief  Program entry point
@@ -111,6 +136,8 @@
 int main(void)
 {
     led1 = 1;
+    Ticker ticker;
+    ticker.attach(periodicCallback, 1);
 
     /* Setup the local GAP/GATT event handlers */
     ble.onTimeout(timeoutCallback);
@@ -123,65 +150,34 @@
     DEBUG("Initialising the nRF51822\n\r");
     ble.init();
 
-    /* Add BLE-Only flag and complete service list to the advertising data */
     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);
-    ble.addService(battService);
-
-    /* Add the Device Information service */
-    deviceInformationService.addCharacteristic(deviceManufacturer);
-    ble.addService(deviceInformationService);
-
-    /* Add the Heart Rate service */
-    hrmService.addCharacteristic(hrmRate);
-    hrmService.addCharacteristic(hrmLocation);
-    ble.addService(hrmService);
-
     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 */
-    DEBUG("Waiting for a connection ...");
-    while (!ble.getGapState().connected) {
-        ble.waitForEvent();
-    }
-
-    /* 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));
+    /* Add the Device Information service */
+    deviceInformationService.addCharacteristic(deviceManufacturer);
+    ble.addService(deviceInformationService);
     ble.updateCharacteristicValue(deviceManufacturer.getHandle(), deviceName, sizeof(deviceName));
 
+    /* Add the Battery Level service */
+    battService.addCharacteristic(battLevel);
+    ble.addService(battService);
+    ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
+
+    /* Add the Heart Rate service */
+    hrmService.addCharacteristic(hrmRate);
+    hrmService.addCharacteristic(hrmLocation);
+    ble.addService(hrmService);
     /* 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;
+    uint8_t location = 0x03; /* Finger */
     ble.updateCharacteristicValue(hrmLocation.getHandle(), (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;
-        }
-        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 */
-        hrmCounter++;
-        if (hrmCounter == 175) {
-            hrmCounter = 100;
-        }
-        uint8_t bpm[2] = {0x00, hrmCounter};
-        ble.updateCharacteristicValue(hrmRate.getHandle(), bpm, sizeof(bpm));
+    while (true) {
+        ble.waitForEvent();
     }
 }