Thanks for the offer. Since I wrote, In addition to Robert's response, I also found a good article at https://briancode.wordpress.com/2015/01/06/working-with-pwm-on-a-beaglebone-black/ and, after disabling the HDMI cape in uEnv.txt, was able to get P8.36 working as PWM. My ultimate goal is to be able to write stuff in C to run under the auspices of the OS and use it's utilities for various things while still trying to write as close to the hardware as the OS will let me (since I have a lot more experience writing bare metal).
Thanks again! On Tuesday, August 18, 2015 at 3:15:11 PM UTC-4, [email protected] wrote: > No idea where they have gone. That is the only location I know about. I > can send you a zip file with them if you would like. > > > On Sunday, August 16, 2015 at 6:25:53 PM UTC-6, Bill M wrote: >> >> Hi All, >> >> Can anyone tell me where the device tree overlays for the PWM are stored? >> I found a post that described how to enable the PWM outputs by doing: >> >> modprobe pwm_test >> echo am33xx_pwm > /sys/devices/bone_capemgr.9/slots >> echo bone_pwm_P9_14 > /sys/devices/bone_capemgr.9/slots >> echo 500 > /sys/devices/ocp.2/pwm_test_P9_14.*/period >> echo 250 > /sys/devices/ocp.2/pwm_test_P9_14.*/duty >> >> This works for me, but I expect that there would be an >> am33xx_pwm-00A0.dtbo file and a bone_pwm_P9_14-00A0.dtbo file in >> /lib/firmware, but not only do I not find such overlays in this directory, >> I can't find them anywhere on my system! What am I missing? >> >> my uname output: Linux beaglebone 3.8.13-bone70 #1 SMP Fri Jan 23 >> 02:15:42 UTC 2015 armv7l GNU/Linux >> > -- 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]. For more options, visit https://groups.google.com/d/optout.
