nRF5 SDK 15.3.0 USB CDC not working

[vincent.golle]

Dear Nordic,

I have noticed that the USB CDC exemple stopped working on my nRF52840.

It seems the event APP_USBD_EVT_POWER_READY is never received by the application.

(APP_USBD_EVT_POWER_DETECTED is indeed received however)

Could you check on your side ?

Kind regards,

Vincent Gollé

[Yevhenii Nesterov]

Hi. 

I've got the same issue on  PCA10056 0.9.3 and SDK 15.3.0 All USBD examples are not working (precompiled HEX as well)

Examples from SDK v15.2.0 are functioning well. 

[AndreasF]

Hi.

How are you testing the examples? What is not working? What errors do you get?

Could you please share the errors and test setup (what you have flashed to the device, how it is connected to your work station)?

Best regards,

Andreas

[Yevhenii Nesterov]

Hello, AndreasF.

I have nRF52840 PREVIEW DEVELOPMENT KIT (nRF6828 Rev: 0.9.3).
Software: Ubuntu 16.04, nrfjprog version: 9.7.3 JLinkARM.dll version: 6.34f, SES 4.12

My steps are:
1. Connect DK to PC over 2 USB ports.
2. Flashing the device with ~/SDK_v15.3.0/examples/peripheral/usbd_cdc_acm/hex/usbd_cdc_acm_pca10056.hex
nrfjprog --chiperase --reset --program usbd_cdc_acm_pca10056.hex --family NRF52 --verify
3. Observe $> udevadm monitor - no new devices. Tested under Windows 10 - same result.

With same example from SDK 15.2.0 on step 3 - new device connected, virtual com port /dev/ttyACM0 available.

Same story with usbd_ble_uart (device is advertising but connection attempts are failing), usbd examples.

Breakpoint on APP_USBD_EVT_POWER_READY is never reached.

regards.

[AndreasF]

Hi.

Are you sure that you have the correct setup?

With /SDK_v15.3.0/examples/peripheral/usbd_cdc_acm/hex/usbd_cdc_acm_pca10056.hex, I found the USB device:

With the /SDK_v15.3.0/examples/peripheral/usbd_ble_uart/ I could connect:

(sorry for the bad quality on that screenshot)

The USB device also shows up:

And the breakpoint APP_USBD_EVT_POWER_READY is reached:

This is my setup:

Best regards,

Andreas

[Yevhenii Nesterov]

Andreas, thank you! 

I'm sure that setup is correct. 

I guess the problem could be related to hardware revision, my DK is one of the first pre-market samples and it slightly different. I will buy a new DK and test it again.

Regards, 

Yevhenii.

[vincent.golle]

I confirm the software works on a new DK.

However is does not on version 0.9.3