nRF52840: nRF USB get "Device Descriptor Request Failed" when trying nRF5_SDK_15.3.0_59ac345/examples/dfu/secure_bootloader.

[Peggy TAN]

Hi all,

I am doing some development on nRF52840 board with PCA10056.

• SDK version: nRF5_SDK_15.3.0
• Softdevice: s140_nrf52_6.1.1_softdevice
• Testing Example: nRF5_SDK_15.3.0_59ac345\examples\dfu\secure_bootloader

I facing a problem that nRF USB (J3) get "Device Descriptor Request Failed".

Testing procedure:

1. "Erase all" through nRFgo Studio and programmed Softdeivce.

2. Build the example "secure_bootloader" through Keil uVision5 and download it.

3. LED1 and LED2 ON when USB connector J2 was connected.

4. LED1 and LED3 ON when nRF USB connector J3 was connected.

But but PC shown "USB Device Not Recognized" and "Device Descriptor Request Failed" in Device Manager.

Please help to advice on this problem.

[Hung Bui]

Hi Peggy, 

Could you let me now which exact project you used ? 

Also could you tell the board's version number? 

Have you tried with other normal USB examples ? For example usbd_cdc_acm or usbd_ble_uart ? 

[Peggy TAN]

Hi Hung Bui,

Project: C:\nRF5_SDK_15.3.0_59ac345\examples\dfu\secure_bootloader\pca10056_usb_debug\arm5_no_packs\secure_bootloader_usb_mbr_pca10056_debug

Board version: V0.9.0 (2017.10)

** I have two boards with same version and both having the same problem.

I tried usbd_cdc_acm by referring to this website: USB CDC ACM Example

1. Compile and program the application.   --> Can be programmed successfully through USB J2 and LED1 ON after programmed.
2. Connect the development kit to the host computer through the J-Link port.
3. Connect the nRF USB to the host computer.   --> When USB cable connected to nRF USB, PC shown "USB Device Not Recognized" and "Device Descriptor Request Failed" in Device Manager also.

[Hung Bui]

HI Peggy,

v0.9.0 is pretty old and it may have an issue with the USB port. Do you have any other board with newer version ? The USB issue was fixed in the boards with revision from v0.9.3 

Your issue could be similar to this. 

[OwainIncus]

Hi Peggy;

I am using same dev kit and see the same issue.
Did you ever find a solution?

Regards,

Owain