ChibiOS Free Embedded RTOS

Hi,
I was using one of USB CDC example from chibi studio on STM32F103xx. I could able to use driver on Windows 10 but not working on Windows 7. I searched lot but found some problem related to usbser.sys file.

Hi,

Not enough info, I use it often on win7, is the .inf driver installed?

Giovanni

i didn't installed .inf file manually.