Android Master Control Panel not updating characteristic value

RE: Android Master Control Panel not updating characteristic value

run_ar — Mon, 09 Nov 2015 06:40:08 GMT

Bret: you might be interested in trying nRF UART 2.0. This is a simple app, that I think supports higher throughout.

RE: Android Master Control Panel not updating characteristic value

Aleksander Nowakowski — Sat, 07 Nov 2015 12:49:07 GMT

I agree. A simple app that puts logs to logcat would be much faster. Although I'm planning to add bandwith measurement feature to MCP one day.

RE: Android Master Control Panel not updating characteristic value

Bret Foreman — Fri, 06 Nov 2015 21:46:46 GMT

I did some more experiments and the log is simply not written as fast as the notify events. So it gets about 2 minutes behind for every 1 minute that it runs. This makes it challenging to use the logger to see anything real-time in this test. Looks like I'll have to write my own app...

RE: Android Master Control Panel not updating characteristic value

Aleksander Nowakowski — Fri, 06 Nov 2015 20:14:11 GMT

Yes, the logs are kept in the database. You may export log sessions to text files, eigher from log details (menu->save)or by selecting multiple log sessions on the list (long click the first session to select, than click other, menu->save). I hope it's enough.

RE: Android Master Control Panel not updating characteristic value

Bret Foreman — Fri, 06 Nov 2015 17:20:34 GMT

Upon further reading, it looks like the logs are in a database, not a text file. Is there away to export them to something like a CSV so I can process the data elsewhere?

RE: Android Master Control Panel not updating characteristic value

Bret Foreman — Fri, 06 Nov 2015 17:12:20 GMT

Where does nRF Logger store the log files on the phone? I've got my phone mounted as a media device on my laptop and I'm browsing the folders but I can't find where those files live. I want to download the logs so I can parse out the data for analysis.

RE: Android Master Control Panel not updating characteristic value

Aleksander Nowakowski — Fri, 06 Nov 2015 14:43:39 GMT

Hi,

The nRF MCP app refreshes the services list every 400ms or so, as far as I remember. Otherwise the GUI was completly not responsive. Even now, with this feature it gets very slow if you send data very fast. The reason is the Log (log refreshes every time a value is received).

If your value was not shown on the services list you can check the log. You should find it there. I think none of values sent should be missed and the log should contain all. If you want to measure the speed the nRF MCP app is not quite (yet!) good way to do so, as the UI is very slow. It would be a much better idea to write a very simple app, with no/almost no UI that just writes the data to the logcat.

Best Regards, Aleksander

RE: Android Master Control Panel not updating characteristic value

Bret Foreman — Fri, 06 Nov 2015 01:16:30 GMT

Another interesting thing - if I disconnect from the DK device the characteristic value gets updated on the screen sometimes. Likewise, it sometimes updates the value on connect. But never dynamically while the actual I/O is happening.

RE: Android Master Control Panel not updating characteristic value

Bret Foreman — Fri, 06 Nov 2015 01:06:11 GMT

My phone is a Galaxy S6 running Android 5.1.1