I am working with a STM32F4 board and I would like to use FreeRTOS+TCP stack with both ETH_MAC and USB_OTG_FS.
From what I have seen on the web, there is no official demo of FreeRTOS+TCP with USB, but is it possible to use the stack with these two interfaces ?
You want to use the USB OTG peripheral as an Ethernet port? If you have a driver for that then the multi-interface version of FreeRTOS+TCP (not fully released yet) may help.
You can also find the URL of the IPv6/multi Github branch on the page mentioned by @rtel.
Unfortunately I don’t have experience with using USB as an Ethernet port, at least not on STM32.
If you have any questions you can ask them here.