Hi everyone -- another beagle question, hopefully someone here can help?
I am trying to get high resolution PWM out of my beagle bone running ubuntu
12.10 to control servos and other hobby RC gear. I have successfully been
able to use the /sys/class/pwm/ehrpwm to create PWM output, however I am
having trouble with the resolution.
The RC standard is to run at 50Hz with each PWM signal lasting from
1000-2000us. I have set the frequency to 50, however it appears that the
duty_cycle must be passed as an integer percentage. Therefore in order to
get 1ms I set the duty cycle to 5 and to get 2ms I set the duty cycle to
10. This gives me only 200us resolution, while I would prefer resolution
closer to 1us,
Anyone know if that is that possible using the standard pwm support?