I'm trying to connect a custom-built controller that connects through USB to a qemu instance for a class. The device is connects through USB but is I guess emulated as a serial device. How can I connect this to my qemu VM? I have tried
"-usbdevice serial:vendorid=0403,productid=6001:/dev/tty.usbserial-ECE391"
and the "-serial" option, however, it always displays this output:
"qemu-system-i386: -usbdevice serial:vendorid=0403,productid=6001:/dev/tty.usbserial-ECE391: character device backend type 'serial' not supported
qemu-system-i386: -usbdevice serial:vendorid=0403,productid=6001:/dev/tty.usbserial-ECE391: Failed to create USB device 'usb-serial'
qemu: could not add USB device 'serial:vendorid=0403,productid=6001:/dev/tty.usbserial-ECE391'"
How can I get qemu to support serial?