RE: Nordic Uart Service TX delay while Service Discovery

MichaelMe — Wed, 01 Jul 2020 07:38:02 GMT

We can't be sure the connection is always terminated by the phone ( e.g. when it is out of range or something).

So i think we have to send one message repeatedly until we get an answer, or wait a few seconds.

Thank you anyway for the support.

RE: Nordic Uart Service TX delay while Service Discovery

Susheel Nuguru — Fri, 26 Jun 2020 10:08:09 GMT

I guess until we have the GATT Caching this is a known problem.

If your device is the one that initiates the disconnect, then you can disable the TX notification flag just before disconnecting (haven't tried it myself). That way the peer when they do the service discovery, have to re-enable the TX notification flag.which could be a signal to your application?

In BLE5.1, when we support Gatt Caching, this problem will be solved, but until then we need to find some workaround like the one I mentioned above.