help with a BBB overlay?

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help with a BBB overlay?

Postby dunmatt » Fri Nov 29, 2013 11:48 pm

Hello all, I'm trying to use arch to read from two analog pins and command four PWMs of a BBB and it has become clear that I don't have the foggiest idea what I'm doing. The guides I find are typically written for 3.8 instead of 3.12, and they typically involve a command failing and the message "failed to load firmware 'BB-ADC-99A0.dtbo'" being written to the dmesg log.

Does anyone know where I might find that overlay file? Is it the kind of thing that's likely to work cross distro (ie could I borrow a copy from the angstrom source)?

Alternatively, do you know of a place with a large variety of device tree overlays from which I could mix and match and hopefully get to a point where I can read from the analog pins?
dunmatt
 
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Re: help with a BBB overlay?

Postby adminempire » Sun Dec 08, 2013 1:39 am

$this->bbcode_second_pass_code('', 'pacman -S linux-am33x-legacy dtc-overlay')

then you make it with something similar to this example
$this->bbcode_second_pass_code('', 'dtc -O dtb -o enable-uart-00A0.dtbo -b 0 -@ enable-uart.dts')

Then enable it.

On my way out to dinner but that is the basics of it.

There is a little more about it on my blog http://www.adminempire.com/beaglebone-b ... rch-linux/ . Trying to get all my BBB info on there.

HTH
adminempire
 
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