nrfConnect & Logger app issues with large datasets

RE: nrfConnect & Logger app issues with large datasets

leonhart88 — Mon, 04 Jun 2018 02:13:52 GMT

Thanks. When I have some free time I'll try doing what you suggested. I think it would be really great to eventually have Nordic put some resources into this though. With the increased usage of BLE products for higher throughput sensor devices, being able to capture longer logs on a test device for verification is really useful.

That being said, perhaps there are already other apps that I could use on the google play store. I'll take a look around and post back here if I find something.

RE: nrfConnect & Logger app issues with large datasets

leonhart88 — Mon, 04 Jun 2018 02:10:47 GMT

Hi MartinBL, yes I'm using nRF Connect for mobile. Mostly because it's more convenient and the nRF dongle I have doesn't work with higher throughput options.

I suppose I should try using nRF Connect for desktop using another nrf52832 dev kit to see if that logging is more reliable...but the only problem there is that I won't be able to test on a device that mimics the end user device.

RE: nrfConnect & Logger app issues with large datasets

Aleksander Nowakowski — Wed, 30 May 2018 13:36:52 GMT

Hi,

I will investigate this issue, but I'm very busy with different tasks. It may take a long time.

Logging in nRF Connect isn't cheap. After each packet is received, a long text is sent to the Content Provider, which may be in another app, if you are using nRF Logger, which takes a lot of resources and is slow. Some recent versions of the app write to log in batches, to make it faster, which is flushed after some time, or when another type of event is logged (write, read, disconnect, etc). But there should be no gaps in the log. That would rather say that there are some race conditions which I have to look closer into. I don't think memory is the case, otherwise the app would simply crash.

I would recommend writing a very simple app that will enable notifications and just log them on LogCat, which is muuuuuuch faster and more reliable. We recommend modifying Android nRF Blinky, that would be easiest and fastest approach.

RE: nrfConnect & Logger app issues with large datasets

MartinBL — Wed, 30 May 2018 07:44:10 GMT

Hi,

I'll investigate a bit. Can you confirm that you are using nRF Connect for desktop and not for mobile phones?

EDIT:

Just noticed this: "nrfConnect app on mobile (using a Pixel 2)" I suppose you are using Mobile

RE: nrfConnect & Logger app issues with large datasets

leonhart88 — Mon, 28 May 2018 18:42:18 GMT

I've did some further tests and it seems like when I kill the app and then launch it again, the first test allows me to log ~12000 notifications again, but the number decreases with tests as observed previously.