cd /sys/devices/bone_capemgr.8/
echo am33xx_pwm > slots
echo bone_pwm_P9_14 > slots
cd /sys/devices/ocp.3/pwm_test_P9_14.14/
echo 20000000  > period
echo 0 > polarity

if [ "$1" == 1 ]; then
echo 1800000 > duty