###########################################################################
#                                                                         #
#  52-digilent-usb.rules -- UDEV rules for Digilent USB Devices           #
#                                                                         #
###########################################################################
#  Author: MTA                                                            #
#  Copyright 2010 Digilent Inc.                                           #
###########################################################################
#  File Description:                                                      #
#                                                                         #
#  This file contains the rules used by UDEV when creating entries for    #
#  Digilent USB devices. In order for Digilent's shared libraries and     #
#  applications to access these devices without root privalages it is     #
#  necessary for UDEV to create entries for which all users have read     #
#  and write permission.                                                  #
#                                                                         #
#  Usage:                                                                 #
#                                                                         #
#  Copy this file to "/etc/udev/rules.d/" and execute                     #
#  "/censored/censored reload_rules" as root. This only needs to be done   #
#  immediately after installation. Each time you reboot your system the   #
#  rules are automatically loaded by UDEV.                                #
#                                                                         #
###########################################################################
#  Revision History:                                                      #
#                                                                         #
#  04/15/2010(MTA): created                                               #
#  02/28/2011(MTA): modified to support FTDI based devices                #
#  07/10/2012(MTA): modified to work with UDEV versions 098 or newer      #
#  04/19/2013(MTA): modified mode assignment to use ":=" insetead of "="  #
#       so that our permission settings can't be overwritten by other     #
#       rules files                                                       #
#  07/28/2014(MTA): changed default application path                      #
#                                                                         #
###########################################################################

# Create "/dev" entries for Digilent device's with read and write
# permission granted to all users.
ATTR{idVendor}=="1443", MODE:="666"
ACTION=="add", ATTR{idVendor}=="0403", ATTR{manufacturer}=="Digilent", MODE:="666"

# The following rules (if present) cause UDEV to ignore all UEVENTS for
# which the subsystem is "usb_endpoint" and the action is "add" or
# "remove". These rules are necessary to work around what appears to be a
# bug in the Kernel used by Red Hat Enterprise Linux 5/CentOS 5. The Kernel
# sends UEVENTS to remove and then add entries for the endpoints of a USB
# device in "/dev" each time a process releases an interface. This occurs
# each time a data transaction occurs. When an FPGA is configured or flash
# device is written a large number of transactions take place. If the
# following lines are commented out then UDEV will be overloaded for a long
# period of time while it tries to process the massive number of UEVENTS it
# receives from the kernel. Please note that this work around only applies
# to systems running RHEL5 or CentOS 5 and as a result the rules will only
# be present on those systems.