Hi John,
On Fri, Oct 27, 2017 at 1:20 PM, John Morris <[email protected]> wrote:
> To get Beagle GPIOs configured correctly at boot, is a custom overlay the
> right way to go? I want a bunch of the PocketBeagle pins configured as GPIO
> output low, but some of them start up in other modes with unwanted signals.
So one of the difference between the BBB and the PocketBeagle, we have
'config-pin' built-into the base *.dtb
So if you want a dedicated use of a pin, you need to disable the
config-pin/cape-unversal pinmux:
P1_02_pinmux {
status = "disabled";
};
So this should work:
https://gist.github.com/RobertCNelson/41ed096d96bede9617c0a1adafb24677
>
> I attempted an overlay config [1]. It may not be correct, but it at least
> compiles. It's installed as shown at the top of the file by putting it in
> `/lib/firmware` and adding `dtb_overlay=/lib/firmware/pb_goldibox-00A0.dtbo`
> to `/boot/uEnv.txt`. That doesn't seem to have any effect on the pins in
> question, however.
>
> Hints appreciated!
>
> John
>
> [1]: https://github.com/zultron/goldibox/blob/master/pb_goldibox.dts
Regards,
--
Robert Nelson
https://rcn-ee.com/
--
website: http://www.machinekit.io blog: http://blog.machinekit.io github:
https://github.com/machinekit
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