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# $Id: README.txt 604 2014-11-16 22:33:09Z mueller $

This directory contains udev rules which ensure that the Cypress FX2 on
  - Digilent Nexys2
  - Digilent Nexys3
  - Digilent Atlys

is read/write accessible for user land processes, either in
  - original power on state          (thus Digilent VID/PID)
  - after custom firmware is loaded  (thus VOTI VID/PID)

!! The rules assume that eligible user accounts are in group plugdev.
!! Check with the 'groups' command whether your account is in group plugdev,
!! in not, add this group to your accounts groups list.

To setup udev rules do

  sudo cp -a 99-retro-usb-permissions.rules /etc/udev/rules.d/
  sudo chown root:root /etc/udev/rules.d/99-retro-usb-permissions.rules
  dir /etc/udev/rules.d/

  sudo udevadm control --reload-rules

to verify whether usb device was really put into group 'plugdev'

  lsusb
    --> look for bus/dev of interest

  find /dev/bus/usb -type c | sort| xargs ls -l
    --> check whether bus/dev of interest is in group plugdev