I have a TWR-K65 board where I can run the usb-device-cdc-vcom-example using the USB-HS port. Using the TWR-K65 standalone this works!
But as soon as I connect the TWR-SER to the tower stack, it stops working.
It seems that the K65 sees the USB bus permanently in reset state.
My goal is to use both USB (USBHS and USBFS). The USBHS over the USB connector on the TWR-K65 as a device and the USBFS over the USB connector on the TWR-SER as a host.
Any ideas whats wrong?