Re: udev rules help with usb>serial adapters

[John Nogatch <jnogatch@gmail.com>]

Below is an excerpt from my /etc/udev/rules.d/90-ftdi.rules which
works with an FTDI 4-port serial USB adapter.
My thanks to Florian Wolters for documenting this method.

-John AC6SL

# FTDI quad USB/serial dongle
# ref: https://www.florian-wolters.de/posts/udev-rules-for-quad-serial-adapter-ft-4232h/
SUBSYSTEMS=="usb", ENV{.LOCAL_ifNum}="$attr{bInterfaceNumber}"
SUBSYSTEMS=="usb", KERNEL=="ttyUSB*", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6011", ATTRS{serial}=="FTWU1K85",
ENV{.LOCAL_ifNum}=="00",  SYMLINK+="k4", GROUP="plugdev", MODE="0666"
SUBSYSTEMS=="usb", KERNEL=="ttyUSB*", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6011", ATTRS{serial}=="FTWU1K85",
ENV{.LOCAL_ifNum}=="01",  SYMLINK+="kpa500", GROUP="plugdev",
MODE="0666"
SUBSYSTEMS=="usb", KERNEL=="ttyUSB*", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6011", ATTRS{serial}=="FTWU1K85",
ENV{.LOCAL_ifNum}=="02",  SYMLINK+="kat500", GROUP="plugdev",
MODE="0666"
SUBSYSTEMS=="usb", KERNEL=="ttyUSB*", ATTRS{idVendor}=="0403",
ATTRS{idProduct}=="6011", ATTRS{serial}=="FTWU1K85",
ENV{.LOCAL_ifNum}=="03",  SYMLINK+="rc1", GROUP="plugdev", MODE="0666"