By the way these are my own preffered "pin mux mode" "spread sheet" PDF files for working with various pins: https://github.com/wphermans/bb-info/blob/master/BeagleboneBlackP8HeaderPinMuxModes.pdf
I do not recall who made these, but links in the PDF's themselves lead back to who created them. Whom also derived the information in these files from Derrek Molloy. So I do not claim the material at all. I just wanted a location that was easy for me to find, and would never go away. My git seemed to be as good a place as any, for me. On Sat, May 20, 2017 at 6:14 PM, William Hermans <yyrk...@gmail.com> wrote: > Greg, > > You know what. If I were you, I would get a Beaglebone black or green, and > make learning about it your favorite hobby. This way, you could experiment > with various things, until you're happy with what you end up using. > > If memory is serving me correctly yes, you're using a blue. Yes, yes, but > the hardware is largely the same, and most if not all the software will be > exactly the same. > > So yes, buy a beaglebone, take it home, and start experimenting. Then I > would probably not worry about HAVING to have hardware connected up with > it. There is a lot you can do by experimenting with software only. How, and > where to explore the GPIO subsystem. Which will then lead to being able to > tell if you've configured your overlay file at boot correctly. etc, etc. > > On Sat, May 20, 2017 at 6:01 PM, Gerald Coley <gcol...@emprodesign.com> > wrote: > >> I decided not to copy what was in the TRM into the SRM. That is why the >> SRM is specific to the BBB. And the TRM gets updated failry often by TI. >> >> >> >> Gerald >> >> >> >> >> >> *From:* beagleboard@googlegroups.com [mailto:beagleboard@googlegroups.com] >> *On Behalf Of *William Hermans >> *Sent:* Saturday, May 20, 2017 8:00 PM >> *To:* beagleboard@googlegroups.com >> *Subject:* Re: [beagleboard] Re: Surefire PRU - Setup. >> >> >> >> System reference manual SRM, Technical reference manual TRM. >> >> >> >> On Sat, May 20, 2017 at 5:58 PM, William Hermans <yyrk...@gmail.com> >> wrote: >> >> No, prior to uboot overlays, overlays were loaded from the initrd, at >> best. Also we need to understand that the board file(also an overlay of >> sorts - but required )is seperate from all this discussion. >> >> I do not understand why you would have "field people" playing around >> with hardware overlays though. Once your hardware is finalized, it should >> never change. Which is one small reason why I personally find Universal IO >> unnecessary for my own purposes. >> >> The problem I've seen with explanations, and documentation on device >> tree, is that no one explains it really well. Additionally, as a new player >> into device tree overlays. Its not clear where to get information from. >> See, you need to understand the pin-ctrl subsystem, gpio subsystem . . . >> list goes one, and on . . .A lot of this information has to be found from >> the Linux kernel source documentation.HOWEVER, you do not necessarily need >> to memorize all of this. We ( programmers ) just need a reference that does >> not goes on, and on for days about silly details we do not need to know to >> get our jobs done. Nothing like this exists. >> >> Anyway, in order to learn, you need to "do". >> >> >> >> -- >> 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 beagleboard+unsubscr...@googlegroups.com. >> To view this discussion on the web visit https://groups.google.com/d/ms >> gid/beagleboard/CALHSORrAaF4Z%2B%3DUZRq%2Bi_oMFRM_ >> K88noC7y5D%3D9MQAkeRUovrw%40mail.gmail.com >> <https://groups.google.com/d/msgid/beagleboard/CALHSORrAaF4Z%2B%3DUZRq%2Bi_oMFRM_K88noC7y5D%3D9MQAkeRUovrw%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> >> -- >> 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 beagleboard+unsubscr...@googlegroups.com. >> To view this discussion on the web visit https://groups.google.com/d/ms >> gid/beagleboard/a67232f2a5a94c10abc16cc8ff83aa70% >> 40winhexbeus11.winus.mail >> <https://groups.google.com/d/msgid/beagleboard/a67232f2a5a94c10abc16cc8ff83aa70%40winhexbeus11.winus.mail?utm_medium=email&utm_source=footer> >> . >> >> For more options, visit https://groups.google.com/d/optout. >> > > -- 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 beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CALHSORo0rmr0p%2BRCDm-hQkJ7se_oC%2Bgh5o1fqf1fCO_-imv8Dw%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
