2021-12-14 11:04 PM
2021-12-14 11:36 PM
As I understood the ST libraries doesn't support composite devices. I used a really good open source solution for it: https://github.com/IntergatedCircuits/USBDevice
This supports composite devices, you can find example projects there also.
2021-12-15 12:42 AM
I am doing this with threadX ( USBX ) help me to add a Virtual COM port
2021-12-15 05:31 AM
You didn't supply any detailed info, so just my wild guess: you re probably missing IAD, or Interface Association Descriptor - a component of the Configuration Descriptor. Find some info on the net regarding composite VCOM and its Config Desc. It won't work without IAD.
2021-12-15 06:15 AM
Related/duplicate: