AnsweredAssumed Answered

USB device not recognized on XP (SP3) when using CDC

Question asked by Kari on Apr 18, 2012
Latest reply on Apr 19, 2012 by Kari

I used the following example code for trying out the usb cdc communication with stm32 discovery.

On my development laptop (Thinkpad t520), usb device is not recognized and vid and Pid fields are zeros. On other computers with linux, windows7 and the same XP version, the discovery board is recognized. So the problem seems to be hw related.

I have tried the USB HID demo and that works fine.

Any ideas how to get usb device recognized (other than change the laptop)?