USB CDC ACM device not recognized for custom nRF52833

RE: USB CDC ACM device not recognized for custom nRF52833

anthony_simetri — Thu, 13 Mar 2025 19:37:53 GMT

Thanks, I will show the third party list to my supervisor if the change in hardware configuration doesn't work out for whatever reason.

aoliveri — Thu, 13 Mar 2025 15:15:36 GMT

Hi Anthony, in addition to the reference circuitry in the product specification, you can download the hardware files for the nRF52833-DK development kit from our website: https://www.nordicsemi.com/Products/Development-hardware/nRF52833-DK/Download?lang=en#infotabs Scroll down and look for 'Hardware Files'

In addition, we have many partners who make modules based on Nordic SoCs. Modules often include all the components that go around the Nordic SoC like capacitors, crystals, antenna, etc. A list of module partners is here: https://www.nordicsemi.com/Resources/Nordic-Partners/Third-party-modules#bluetooth-low-energy

Håkon Alseth — Thu, 13 Mar 2025 13:55:23 GMT

You need decoupling caps, crystals, etc. Please see the former link and compare it with your schematic.

Kind regards,

Håkon

anthony_simetri — Thu, 13 Mar 2025 13:53:11 GMT

Specifically, the VBUS being connected to VDDH?

Håkon Alseth — Thu, 13 Mar 2025 11:55:07 GMT

Hi,

It looks like you are lacking crucial components as listed in the reference design:

Kind regards,

Håkon