I have attempted to design my own custom Atmega32u4 board, but when I assembled it it didn't show up in windows device manager. I fixed the problem where I forgot to connect VBUS to VCC with a jumper but it still doesn't show up in device manager. I have also measured all the power rails and made sure that everything got 5v. Any help would be much appreciated.
Electrical – Help with Atmega32u4 custom PCB
atmega32u4avrkicadpcb-design
Best Answer
220 Ohms, if your schematic represents what you have on the board is too high. You should be using ~22 Ohm for USB 2.0edit: As noted by below, your schematic is correct here, just interesting notation and I misread.It looks like you are basing this off of https://github.com/Dr-Derivative/Goldfish/blob/master/doc/goldfish.pdf
You should examine the key differences here. Notably:
CC1/CC2 are not terminated
The CC1/CC2 not being terminated is the biggest issue. The CC lines are how USB-C determines connectivity and orientation. Without them, your system won't attach as it doesn't know which way you've inserted the connector.