How can I set PWM in PocketBeagle

[Mys Patchim]

I want to control PWM but I don't know how can I set it.

I use Debian 9.3    I try. ..

cd /sys/class/pwm/pwmchip0
index=0
echo $index > export
cd pwm$index
echo 1 > enable
echo 1000000000 > period  
echo  500000000 > duty_cycle  

but nothing happened . ..    and how do I know which PWMchip is  PWM0A , PWM0B,  PWM1A ,  PWM1B 

[Robert Nelson]

Documented here:

https://github.com/beagleboard/pocketbeagle/wiki/Peripherals

Regards

--
Robert Nelson
https://rcn-ee.com/