Bluetooth Low Energy / Mbed 2 deprecated BLE_BatteryLevel Featured

An example of creating and updating a simple GATT Service using the BLE_API

Dependencies:   BLE_API mbed nRF51822 X_NUCLEO_IDB0XA1

This example creates and updates a standard Battery Level service, and a single GATT characteristic that contains the battery level.

Diff: main.cpp

Revision:
8:45beed07b093
Parent:
5:77ad8d8dc9c5
Child:
12:4024aa3f72b0
--- a/main.cpp	Fri Jun 13 12:12:18 2014 +0000
+++ b/main.cpp	Mon Sep 22 10:28:55 2014 +0000
@@ -16,6 +16,7 @@
 
 #include "mbed.h"
 #include "BLEDevice.h"
+#include "BatteryService.h"
 
 BLEDevice  ble;
 
@@ -32,17 +33,11 @@
 #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 *));
+BatteryService *batteryServicePtr = NULL;
 
-
-void disconnectionCallback(void)
+void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
 {
-    DEBUG("Disconnected!\n\r");
+    DEBUG("Disconnected handle %u!\n\r", handle);
     DEBUG("Restarting the advertising process\n\r");
     ble.startAdvertising();
 }
@@ -57,11 +52,12 @@
 
     if (ble.getGapState().connected) {
         /* Update battery level */
+        static uint8_t batt = 50;
         batt++;
         if (batt > 100) {
             batt = 72;
         }
-        ble.updateCharacteristicValue(battLevel.getHandle(), (uint8_t *)&batt, sizeof(batt));
+        batteryServicePtr->updateBatteryLevel(batt);
     }
 }
 
@@ -81,7 +77,8 @@
     ble.setAdvertisingInterval(160); /* 100ms; in multiples of 0.625ms. */
     ble.startAdvertising();
 
-    ble.addService(battService);
+    BatteryService batterService(ble);
+    batteryServicePtr = &batterService;
 
     while (true) {
         ble.waitForEvent();