creating custom service and characteristics with Bluetooth Base UUID.

[akhil]

Hi, I am creating a custom service and corresponding characteristic. For that I am planning to use bluetooth base uuid (for confirmation : 00000000-0000-1000-8000-00805F9B34FB). I used following settings for the service: In structure ble_uuid_t:

ble_uuid_t.uuid = 0xccc0;
ble_uuid_t.type = BLE_UUID_TYPE_BLE;

I then called sd_ble_gatts_service_add() API and registered the characteristics.

Then I started adding the characteristic with following settings:

 ble_uuid_t.uuid = 0xccc1;
    ble_uuid_t.type = BLE_UUID_TYPE_BLE;

but when I tried to register the above characteristic with sd_ble_gatts_characteristic_add() API, it failed.

I am not getting what the reason be for this failure in registering characteristic.

[Petter Myhre]

For custom services and characteristics you can't use the Bluetooth SIG base UUID. The Bluetooth SIG base UUID can only be used with these services.

See this question for how to acquire a UUID for your custom services and characteristics.

[akhil]

@Petter Myhre , oh, but what could be the reason that the service registration function become successful?

[Petter Myhre]

I just tested this, and if I only change the UUID to 0xccc0 and 0xccc1 both returns NRF_SUCCESS. I guess there is something else that is causing the error returned from sd_ble_gatts_characteristic_add(). What is the error code?