Hello @ALEX_PARK ,
The weekend was okay. Finally…rest. Anyway, in the new image (Bookworm), there are two pins that are listed as ehrpwm on the /boot/firmware/overlays/ files that one can add in w/ the /boot/firmware/extlinux/extlinux.conf file.
From my knowledge, this does not specifically mean that the other PWMSS pins are not ehrpwm enabled but maybe they are not.
I do not know right now what to make of it.
Seth
P.S. BeagleBone cape interface spec — BeagleBoard Documentation
I will test again and see if I cannot get better results like we discussed earlier last week.
Update
Here is the Bookworm page on this forums w/ the ehrpwm peripheral access overlays:
Another Update and Ideas…
- I have all my PWM overlays enabled which includes the ehrpwm overlays at P9.25/P8.37.
- Do you think testing PWM1 and then ehrpwm at P9.25 will encounter different results on the oscilloscope?
- If I encounter different results, I will reply w/ that info. and add photos in the mix.
I had some issues w/ the software on my oscilloscope. Bugs. I should report them to Rigol. I had to erase every form of source from Rigol to get rid of the pop-up installs. Blah.
Anyway, I can test right now even though I need to learn the divisible part of my connections w/ the Rigol in mind. Updates on the way. Also, the link I posted can get you about 200MHz loops from the PRU…