> > > - you say that I still have to manually export pwm0 and pwm1. You mean > after mounting your cape, I will have to write a 0 and 1 into the export > file of the pwmchip<number> directories in /sys/class/pwm? > > Yes.
- Also which Chip corresponds to which ehrpwm? This site has a table most of the way down that explains it. However do keep in mind that it's outdated material, and that now we only have pwm0, and pwm 1 per module. No, pwm0, pwm1, pwm2, pwm3, etc. Also the pwm directories will no longer show in /sys/class/pwm, but will now show in /sys/class/pwm/pwmchipX where X is the chip number. - And last but not least, what is the unit of duty_cycle and period? Is it ns? I'm not 100% sure, but ns sounds reasonable. However, I'm not sure the time period matters so much, as duty_cycle is a percentage of period. So in our circuit here, which is reverse logic. A period of 2000 with a duty_cycle of 2000 would be 100% duty_cycle. BUt I was just driving LEDs with it, not a stepper motor or anything period critical. Anyway, you can always hook the output up to a scope . . . -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORrFbzBxjFYDDA3d-J%3D5zHu8VM_m00NghLD_hNhkbg8bog%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
