cannot able to recognize the serial port when connecting usb cable in nrf USB connector

[Dileep Kumar]

i want to device firmware update in NRF5340 through PC nrf connect SDK. when iam connecting the usb cable from pc to JLINK CONNECTOR on the short side of dk board,the serials ports are displaying and i can able to swap the images from slot 1 to slot 0 through SMP server sample and hello world application to DFU. But when iam trying to connect the usb cable to nRF USB connector, the serial ports itself  is not showing and how i can do DFU with nRF USB connector on long side of the DK board

 

[Priyanka]

Hi Dileep,

You can perform DFU using the nRF USB port, but then you also need to power the DK at the other USB port too (the one on the short side).

Best Regards,

Priyanka

[Dileep Kumar]

Thank you for reply,i connected two usb cables from PC to DK board. one usb cable to short side of DK and other to long side side of DK(nrf USB). SOC is mainly connected to nrf usb and Debugger connected to usb side on short side of DK board. can i do any modifications or configurations such that DFU will be updated through nRF USB connector.

[Priyanka]

Hi Dileep,

Yes it should be possible to perform DFU via the nRF USB. You can also take a look at this DFU USB examples developed by one of my colleague: https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples/serial_recovery/mcuboot_serial_recovery_cdc_acm 

Regards,

Priyanka