How to use PWM GPIO on Rock PI 4B+ without “mraa” library.
Example: sudo echo 0 > /sys/devices/platform/ff420020.pwm/pwm/pwmchip0/export
I have not found much on pwm Rock 4, on Rockpi 3A it works for me.
Anyone know how to set the duty cycle and output on a pin?
Thanks to anyone who shares something.