nRF UART v2.0 fails if advertising interval is bigger than ~100 ms

[Jarmo]

In my low-power application I need to use advertising interval of few seconds (two or more) in order to get lifetime of a year with CR2450 battery. However, the Android application nRF UART v2.0 fails to connect if the interval is more than about 100 ms.

With e.g. 2000 ms it still finds the device and connects, but then either instantly disconnects or gives an error "the device does not support UART" after trying to send data there. If I change the advertising interval into 64, the nRF UART v2.0 starts to work as expected.

What is the reason for that, and how to fix it? With our own Android application there is no such problem even if we use exactly the same UART service.

[Sigurd]

Hi,

The old UART 2.0 app is deprecated (over 3 years since last update). I strongly recommend using the nRF-Toolbox app, and use the UART function there instead.

[Jarmo]

The problem is just the same with that Toolbox application :(

[Jarmo]

Well, just made another test. Actually, it seems to work better :)

[Sigurd]

Great it's working better now! :)

[Jarmo]

Now I am wondering can I get the output logged into a file somehow? Or does it log automatically, then where is the file?