add 16 bit uuid ble standard characteristics

[inya_lake]

Hi,

 I've been following below tutorial and everything works fine.

https://devzone.nordicsemi.com/nordic/short-range-guides/b/bluetooth-low-energy/posts/ble-characteristics-a-beginners-tutorial

However, I was not able to figure out how to modify so that I can add BLE assigned 16bit characteristics. For example, I'd like to add ESS services (0x181A) to above tutorial. Do I just use  standard 16-bit into 128-bit uuid with zeros like below?

0000181A-0000-0000-0000-00000000000

Or is there a simpler way to add BLE standard 16 bit uuids?

I'm okay to modify HRM example if feasible. 

Thanks for your help,

[Marjeris Romero]

Hi,

You can take a look at how other 16-bit SIG GATT services are defined in the SDK, for example see how Battery Service is defined inside nRF5_SDK/components/ble/ble_services/ble_bas/ble_bas.c in nRF5 SDK v17.1.0, line 207:

    // Add service
    BLE_UUID_BLE_ASSIGN(ble_uuid, BLE_UUID_BATTERY_SERVICE);

And BLE_UUID_BATTERY_SERVICE is defined to same 16-bit number as in the 16-bit UUID assigned numbers document from Bluetooth SIG.

I recommend just using the same template as with ble_bas.c for the GATT service you want to add.

Best regards,

Marjeris