Setup pins on Beaglebone Black

 


debian@beaglebone:~$ nano /etc/rc.local

#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.

#export gpio, configure pin for output and set permissions to allow all users

#GPIO PIN SETUP
echo 66 > /sys/class/gpio/export
chmod 666 /sys/class/gpio/gpio66/value
chmod 666 /sys/class/gpio/gpio66/direction
echo out > /sys/class/gpio/gpio66/direction

echo 67 > /sys/class/gpio/export
chmod 666 /sys/class/gpio/gpio67/value
chmod 666 /sys/class/gpio/gpio67/direction
echo out > /sys/class/gpio/gpio67/direction
echo 68 > /sys/class/gpio/export
chmod 666 /sys/class/gpio/gpio68/value
chmod 666 /sys/class/gpio/gpio68/direction
echo out > /sys/class/gpio/gpio68/direction
#GPIO PIN SETUP END
#PWM PIN SETUP
chmod 666 /sys/devices/ocp.*/pwm_test_P9_14.*/duty
chmod 666 /sys/devices/ocp.*/pwm_test_P9_16.*/duty
chmod 666 /sys/devices/ocp.*/pwm_test_P9_29.*/duty
chmod 666 /sys/devices/ocp.*/pwm_test_P9_14.*/period
chmod 666 /sys/devices/ocp.*/pwm_test_P9_16.*/period
chmod 666 /sys/devices/ocp.*/pwm_test_P9_29.*/period

#PWN PIN SETUP END

exit 0

 

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