RE: USBD EVENTCAUSE=Ready no longer firing

ryan_g — Thu, 19 Jul 2018 20:38:22 GMT

Update;

I've found in the Errata list that the issue I'm running into is Errata 187.

I applied the workaround in my code and I'm now receiving USBD events again.

If I run into more issues with the enumeration sequence on the DK I'll come back and provide another update.

RE: USBD EVENTCAUSE=Ready no longer firing

ryan_g — Thu, 19 Jul 2018 18:54:02 GMT

Small Update:

So I tested the SDK15 and SDK14 cdc_acm examples and they are running into the same issues on the NRF52840DK.

I flashed the Development Kit using 'make flash' and via SEGGER I'm able to see that it's getting stuck waiting for the EVENTCAUSE=ready event.

However, if I flash the NRF52840DK with the HEX file 'usbd_cdc_acm_pca10056.hex' it works just fine. I've re-downloaded the SDK to confirm there wasn't an issue with code potentially being modified and ran a 'make flash' again and I'm still running into the same problem.

The examples work as expected on the PDK still.