Hi Hans,​Thank you very much your advice.Eventually I got that work perfectly.I had changed the value of the resistor and switched on the pull up pin but it didn't work. However, I noticed that when I deleted the customized contents in "STORAGE_Init_...

Hi Hans,Congratulations for your baby boy and thank you very much for sharing your experience.My board is also a custom made board with STM32F103VET6The USB circuitThe clock circuit The clock config.I knew that the demo has no PA8 for pull up, so I a...

Hi Hans,I have a very similar problem as yours (nothing shows up after the board is connected to PC) and struggled for a few weeks. Could you show me where should I modify? ThanksSimon