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<set_> @zmatt: Look at a photo of me being called a dog by a webcam and some source on the forums!
<set_> I just posted it to let people know it WORKS!
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<n0stalgia> does anyone have electrical schematics for this cape? looking to write a custom dtb overlay for it for entertainment reasons and can't find any real documentation on it.
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<set_> I do not.
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<Guest41> Hi, hope all are doing well.
<Guest41> I was trying to configure Device Tree for BBAI in order to get SPI and ADC working. Can anyone help me in this regard?
<set_> I saw /dev/bone/spi/ working before today.
<set_> And...ADC should, or normally, just is open for use.
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<Guest41> I have flashed v10.10 iot
<Guest41> By default, it did not had SPIDEV present in /dev I added two overlays "BONE-SPI0_0"  "BONE-SPI1_0" to get it working.
<set_> Oh.
<set_> I used an updated kernel, 5.10.x, on one of the BSP images from bbb.io.
<set_> The file, /dev/bone/spi/, was able to be used. Let me get a link...
<set_> If you scroll down to SPI at https://elinux.org/Beagleboard:BeagleBone_cape_interface_spec, there are some entries for the BBAI.
<set_> brb
<Guest41> I am using the DTS overlays mentioned in the link you shared and are working fine. The issue is I am unable to get SPI and ADC to work at the same time.
<set_> Oh.
<set_> Let me go read some more.
<Guest41> For ADC to work, I have to use the DTS file shared in the element14 community link that I shared earlier.
<Guest41> And if I use both at the same time, the OS doesn't boot.
<set_> Right.
<set_> I have had trouble w/ .dts files making the board not boot.
<set_> On that link I showed you, it seems that the AI needs an external STMPE811. I am not quite sure what exactly that is right now.
<set_> I will read about it, please hold.
<Guest41> It's a touchscreen controller that has a built-in ADC and it is already present on the board.
<set_> So, maybe the SPI handles this chip for ADC.
<set_> Hmm.
<set_> Okay, off to read more.
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<set_> Well, I think that if this is true, if the SPI handles the STMPE811, then other things need to take place in the .dts file.
<zmatt> oh he left
<set_> Okay, so. For SPI 0.x, you will need two .dts files to use the /dev/bone/spi/0.0...
<set_> Oh.
<set_> Oh...yep.
<set_> Guest41 must not to work w/ others?
<set_> not to = not like to
<set_> @zmatt: Have you used edgeai-tidl-tools yet for the BBAI-64?
<zmatt> I don't have an AI-64
<set_> It is some perplexing, vast lib. that builds all sorts of things.
<set_> I cannot get it to fully build yet.
<zmatt> (yet)
<set_> Yet!
<set_> I can send you one?
<set_> Secrets! The USPS people will never know!
<set_> Ha.
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<Guest41> Found anything?
<zmatt> hmm, do the new bullseye images support cape-universal on bbai?
<zmatt> Guest41: it's certainly worth trying a bullseye image ( https://forum.beagleboard.org/t/debian-11-x-bullseye-monthly-snapshots/31280 ) to see if adc works out of the box there
<Guest41> Haven't tried that. I am using buster (v10.10) and not bullseye.
<Guest41> I installed it but it was heating up my device rapidly.
<zmatt> yeah people do have a lot of overheating issues with the bbai
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<zmatt> maybe it should have been designed with a humongous heatsink like the bbai-64 has ;) https://git.beagleboard.org/beagleboard/beaglebone-ai-64/-/blob/main/doc/SRM/images/45-back-heatsink.png
<set_> Me? Fan, use the fancape.
<set_> Or...a usb fan.
<zmatt> Guest41: but in general overlays and especially combining multiple overlays doesn't really work properly on old systems on the bbai, it kinda needs a single overlay with all your customizations (or an entirely custom dtb)
<Guest41> Oh okay. Will try it then.
<zmatt> that's why the page you linked uses a custom dts
<zmatt> Guest41: here's an spi example for the bbai: https://pastebin.com/iXbGGtzz
<Guest41> Thank you for your time bro. Take care!
<zmatt> with hopefully useful comments to explain what's going on
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<set_> Nice!
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