how to send a notification enabled response, or service initialized indication for the BLE SMP service

[ziv123]

hello Nordic

i am working with nrf52840 running ncs v2.8.0 

this device connects with a central, via BLE, the central running on linux.

i am working with smp (simple management protocol) with some user group id and also some build in groups. 

the problem i have is that when the 2 device establishes a connection then the linux side is ready faster then the nrf and if i send a message then it is not received in the nrf device which is nor ready yet for receiving (if i put a hold on the send for 2 seconds then all is fine).

i want the nrf device to send some "is ready" message indication to the central (by it self, not as a replay to a command sent from central) once the SMP service is initialize, or notifications on it are enabled. since the SMP service is initialized and built with in the ncs (which i don't want to change internally) i wonder how this can be done, i think there are some api in more advanced ncs versions but for now we are working with ncs2.8.0

hope you can help 

best regards

Ziv

[Einar Thorsrud]

Hi,

I am not sure what this not ready state could be. Configuration of services happens before the device starts advertising, so that should be OK. I sthe problem that some procedures has not completed, or something else? Can you share a sniffer trace and log from the problematic case so that we can understand more about what the root cause here is?

[ziv123]

hi

i am calling it "ready" stat, i am not sure what it is called on the ncs internals,  i just know that when i establish a connection with my linux side (using blueZ) if i try to send a command from the linux (central) using the SMP service, before i enable notification, then the ncs side (peripheral) just don't get this message or just don't replay to it (which makes sense if notification was not enabled yet) ....

i want that instead of waiting for the notification enable on the linux side and then on the linux side send a command and get response.. that i can send automatic message from the ncs side after the SMP characteristic of the SMP service get notify enabled by the central .. is my goal clearer now ?