cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

RE: cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

Håkon Alseth — Fri, 16 Aug 2019 10:54:05 GMT

Hi,

Could you share your sdk_config.h? If you're using NRF_LOG, then I'd recommend also upping the define "NRF_LOG_BUFSIZE" and see if this improves the scenario.

Kind regards,

Håkon

RE: cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

ant — Thu, 15 Aug 2019 21:15:45 GMT

There's a motion sensor that sends an interrupt to wake up the nRF52840 by "tapping", it can be a strong "tap" depending on setting but that's not related to this discussion.

The key thing is that the CRASHLOG logging does not show up properly on the RTT viewer, it is truncated even though we increased the buffer size.

Ideally, after the unit let's say detects a low voltage, it logs it, powers down, then when I plug in the j-link jtag cable onto the board, it wakes up the system and I see the print out of CRASHLOG without truncation.

RE: cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

Øyvind — Wed, 05 Jun 2019 12:31:22 GMT

Hello,

My apologies for the late reply.

[quote user="antolinagatep"]I wake up my board (by tapping it) and the crashlog shows up - but note that it did not show up the first time I applied good power level with RTT viewer connected[/quote]

What do you mean by tapping it? What project are you using when enabling crash log?

RE: cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

ant — Thu, 30 May 2019 01:11:07 GMT

ok, I tried several times, and what worked to make the crashlog appear is after connecting the jlink and opening RTT viewer and the nrf52840 is at a good voltage level, ~2.8 V+, I wake up my board (by tapping it) and the crashlog shows up - but note that it did not show up the first time I applied good power level with RTT viewer connected

RE: cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

Øyvind — Mon, 27 May 2019 08:04:29 GMT

Sorry, I sent the wrong link in the previous post. No need to use a Windows PC, JLink is also for Mac OS X or Linux. Click here.

RE: cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

ant — Sun, 26 May 2019 20:32:59 GMT

yes nRF_Log is configured correctly, got the crashlog showing in my segger debugger,but the rtt viewer on my mac os x is not showing it,.....I'll try to find and install on a windows pc...as your link shows windows

RE: cannot see CRASHLOG with RTT viewer but can see CRASHLOG in SES ide debugger running

Øyvind — Fri, 24 May 2019 07:47:33 GMT

Hello there,

I am not able to reproduce the issue here. Is nRF_Log configured correctly in sdk_config?

Have you updated to the latest version of JLink drivers (v6.46)?

Kind regards,
Øyvind