USBD without logging

RE: USBD without logging

Jørgen Holmefjord — Fri, 26 Jan 2018 13:07:58 GMT

It is hard to repoduce the issue from your description. Could you post the code related to power management and processing of log/cli/usb events? Ideally, if you could upload the entire project, that would be best. If you do not want to share it in public, you can create a new case on MyPage, where you link to this thread and upload the project.

RE: USBD without logging

artrr — Thu, 18 Jan 2018 09:06:53 GMT

I have updated to SDK14.2. Nothing change, the same issue... I've implemented some mechanism for logs filtering, so now I may leave NRF_LOG_ENABLED on. However this behavior (Softdevice on, logs disabled, USB not functional) looks very strange...

RE: USBD without logging

Jørgen Holmefjord — Tue, 16 Jan 2018 14:53:09 GMT

Are you using SDK v14.0.0, or v14.1.0/14.2.0? There is a lot of fixes related to app_usbd library and nrf_drv_usbd in SDK v14.1.0 release (release notes). If you are not using the latest version, I would recommend you to try out the updated libraries.

RE: USBD without logging

artrr — Tue, 16 Jan 2018 08:44:58 GMT

All initializations have APP_ERR_CHECK so even without logs I know that there are no errors. Software works because I have working CLI. However I checked interactions between SW modules:

NRF_LOG_ENABLE=1, softdevice active - USB works fine.
NRF_LOG_ENABLE=0, softdevice active - USB doesn't work.
NRF_LOG_ENABLE=0, sofdevice NOT active - USB works fine. So it looks that there is a problem when I have active softdevice (s140_nrf52840_5.0.0-2).

RE: USBD without logging

Jørgen Holmefjord — Mon, 15 Jan 2018 13:37:30 GMT

I'm not able to reproduce this issue using the USB examples in the SDK. Have you checked if you see the same issue if you test with these? Have you tried debugging your application to see if the code is stuck somewhere, or if some functions return any error codes when logging is disabled? Note that there is a bug in the app_usbd library related to the logging module, but I don't think this is related to your issue.