USB CDC Host demo (FS or HS) STM32F7 Discovery
Hi,
not sure if this is still relevant for you - but I encountered the same thing and in the moment Í´m investigating on the same issues like you with an FTDI USB device.
With this FTDI device the STM32 USB CDC device example code is also telling me “No registered class for this device”. This happens when using FS and HS example code on the STM32F7 Discovery board. It also happens when I use eg. a MSC device like a memory stick (for sure...)
So, when I used another STM4 Discovery board as a USB device and run on that device the STM32 USB device VCP (virtual com port) example and connected that board with the USB CDC host board - both boards talked to each other. So this seems to be step one for me. Now I have to figure out whats the difference between the STM32 VCP and the “real” FTDI cable...