#!/bin/zsh
#(c) Bernhard Tittelbach

LUFA_USB_SYSFS=(  /sys/bus/usb/devices/*/idVendor(e:'grep -q 03eb $REPLY'::h) )
LUFA_CDC_DEVS=( ${^LUFA_USB_SYSFS}/*/tty/ttyACM*(:t) )

[[ -n $1 ]] && print /dev/${LUFA_CDC_DEVS[$1]} || print /dev/${^LUFA_CDC_DEVS}

exit 0