I am trying to bring up the USB to do Serial Firmware updates via USB but when plugging into my custom PCB (same Boot config resistor set up as the dev kit) it does not enumerate. The dev kit works and enumerates correctly. I have looked at the whole family of parts and their documentation but have yet to find a difference that has had positive results. What would you recommend trying?
Hi,
There might be a difference in the HW design.
Which HDG did you follow?
Regards,
Daniel.