RE: To properly set up a ble peripheral app, how many CBs do I have to register?

David Edwin — Fri, 15 Dec 2017 14:42:37 GMT

It appears all the callbacks for Atmel are softdevice level callbacks/events and not at the SDK level. Can you provide more information on this. You can also use the one on one support portal , www.nordicsemi.com/.../Contact-Support-Team to provide other information.

RE: To properly set up a ble peripheral app, how many CBs do I have to register?

Hung Bui — Tue, 12 Dec 2017 13:47:08 GMT

Hi Mitch,

There isn't a split between GAP and GATT callbacks/event. They are all can be handled inside ble_evt_dispatch(). If you use our library (device manager for example), you don't need to register any more handler.
I assume you are talking about ble_hrs_on_ble_evt() (for example) as "sub-callback" ? They are event handler of a service. Any service can subscribe to the events dispatch and handle events that it's interested in. It's completely up to the application what to do with the event.
The question is what do you want to do with your application, for example if you want to handle an event. For example if there is a write request to a characteristic , then turn on an LED. Then you need to write that handler to catch the write event then turn on the LED.

dm_ble_evt_handler() for example , is belong to the device manager library ,and you can leave it untouch. Other handler, is the service handler, if you don't plan to use it you can skip it. Or if you want to include it hrs for example, you just leave it as it is.