Control Servo Motor with GPIO pins and PWM

[librecomputer]

How to Enable and Control PWM on Libre Computer ROC-RK3328-CC

ROC-RK3328-CC Renegade has one available hardware PWM on pin 12 called pwm2. The Linux kernel interface can be accessed via sysfs. sudo ldto enable pwm2 ls -al /sys/class/pwm # see the pwmchip{n} to hardware mapping echo {0,1} | sudo tee /sys/class/pwm/pwmchip{n}/export echo 1000000 | sudo tee /sys/class/pwm/pwmchip{n}/pwm{n}/period echo 500000 | sudo tee /sys/class/pwm/pwmchip{n}/pwm{n}/duty_cycle echo 1 | sudo tee /sys/class/pwm/pwmchip{n}/pwm{n}/enable