Inconsistent transmission time between my dev kit and nRF connect PC app and Android app.

RE: Inconsistent transmission time between my dev kit and nRF connect PC app and Android app.

william.ely — Tue, 04 Sep 2018 18:37:05 GMT

It turns out that the reason for the long transmission time was a delay inserted between notifications. I had FREERTOS defined in my sdk_config.h file. Once I took that out the notification delay went away. I will try defining FREERTOS in the project settings like in the demo. i imagine there is a good reason why it was defined there:).

RE: Inconsistent transmission time between my dev kit and nRF connect PC app and Android app.

awneil — Fri, 31 Aug 2018 22:21:11 GMT

No. The Peripheral app requests what it would like; the Central decides what it will grant.

What the Central grants is (largely?) down to the OS - there doesn't seem to be much control available to the app, and the OS logic is not documented.

Sometimes, disconnecting and immediately reconnecting will give different results!

Results can & do differ from device to device.

This has been discussed many times before.

RE: Inconsistent transmission time between my dev kit and nRF connect PC app and Android app.

william.ely — Fri, 31 Aug 2018 19:41:20 GMT

So the phone app needs to request the same transmission parameters as the nRF connect PC app?

RE: Inconsistent transmission time between my dev kit and nRF connect PC app and Android app.

awneil — Fri, 31 Aug 2018 19:38:11 GMT

Take a look at the connection parameters that are being granted by the phone app ...