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STM32F302 VCP not recognized

Question asked by borges.fabio on Jul 16, 2015
Latest reply on Jul 16, 2015 by borges.fabio
Good morning,

I've tested the USB CDC mode on the STM32F3 Discovery with the configuration given by STM32CubeMX and it work just fine but now that I made the PCB with the stm32F302RCT the configuration doesn't work. The PC just don't recognize the USB..

I tried to see if it was the circuit but if I connect the circuit directly to my discovery it works, but when I use my PCB it doesn't recognize. I was carefully design by hand the tracks close to don't have problems with capacitance and other things like that.

Does someone have an idea where the problem could be?