Bluetooth Low Energy
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:
- 0:395932faedf1
- Child:
- 1:54fe327e5d0a
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp Thu Jan 09 10:53:09 2014 +0000
@@ -0,0 +1,31 @@
+#include "mbed.h"
+#include "uuid.h"
+#include "hw/nrf51822.h"
+
+/* Radio HW */
+nRF51822 radio;
+
+int main(void)
+{
+ GattService battService ( 0x180F );
+ GattCharacteristic battLevel ( 0x2A19, 1, 1, BLE_GATT_CHAR_PROPERTIES_NOTIFY | BLE_GATT_CHAR_PROPERTIES_READ);
+
+ /* Make sure we get a clean start */
+ radio.reset();
+
+ /* Add the characteristic to our service */
+ battService.addCharacteristic(battLevel);
+
+ /* Pass the service into the radio */
+ radio.addService(battService);
+
+ /* Configure the radio and start advertising with default values */
+ /* Make sure you've added all of your services before calling this function! */
+ radio.start();
+
+ /* Now that we're live, update the battery level characteristic */
+ uint8_t batt = 72;
+ radio.writeCharacteristic(battLevel.handle, (uint8_t*)&batt, sizeof(batt));
+
+ while(1);
+}