84-noroot

# /etc/udev/rules.d/85-gpio-noroot.rules
#
# Corrects sys GPIO permissions on the BB so non-root users in the gpio group can manipulate bits
#

###needed for gpioinfo and friends...
###Before
###debian@bbb-pwr01-ser09:~$ ls -lha /dev/gpiochip*
###crw-rw---- 1 root root 254, 0 Jul  9 00:01 /dev/gpiochip0
###crw-rw---- 1 root root 254, 1 Jul  9 00:01 /dev/gpiochip1
###crw-rw---- 1 root root 254, 2 Jul  9 00:01 /dev/gpiochip2
###crw-rw---- 1 root root 254, 3 Jul  9 00:01 /dev/gpiochip3
###After
###debian@bbb-pwr01-ser09:~$ ls -lha /dev/gpiochip*
###crw-rw---- 1 root gpio 254, 0 Jul  9 00:01 /dev/gpiochip0
###crw-rw---- 1 root gpio 254, 1 Jul  9 00:01 /dev/gpiochip1
###crw-rw---- 1 root gpio 254, 2 Jul  9 00:01 /dev/gpiochip2
###crw-rw---- 1 root gpio 254, 3 Jul  9 00:01 /dev/gpiochip3

KERNEL=="gpiochip*", SUBSYSTEM=="gpio", MODE="0660", GROUP="gpio"