I have designed two different data acquisition boards with STM32F407 MCU. Everything is OK. Now I would like to customize the USB CDC driver. I changed the MFG name in the .inf file provided by ST. This works in Win7 nicely (But not in Win 8, I think because of the digital signature file.)
Now when I connect both boards to one PC, some problems happen. As I know each USB device should have a VID and PID. VID should be bought from usb.org and it is really expensive. But we can use the VID of ST chips. Is it possible to change the PID of my product to avoid confusion in this situation?
Has anyone any similar experience?
Thanks in advance.