Add MCP3008 ADC overlay

[jclsn]

This adds the overlay for the MCP3008 ADC.

[kraj]

Lgtm

[jclsn]

Didn’t go through? Hmm, works for me

[agherzan]

Thanks for this @jclsn. You missed the SoB (signed off by line) and also I'd tweak a bit the commit subject: rpi-base.inc: Add MCP3008 ADC overlay.

[agherzan]

I have included this change in #1053. Closing.

[jclsn]

@agherzan Ah, did not know about the SoB. Will try to remember it next time!

Lately I have been getting this error

ERROR: healthpi-image-1.0-r0 do_image_rpi_sdimg: mcopy cannot copy /home/claussenj/Workspace/Yocto/healthpi/build/tmp/deploy/images/raspberrypi4-64/mcp3008.dtbo into boot.img
ERROR: healthpi-image-1.0-r0 do_image_rpi_sdimg: ExecutionError('/home/claussenj/Workspace/Yocto/healthpi/build/tmp/work/raspberrypi4_64-poky-linux/healthpi-image/1.0-r0/temp/run.do_image_rpi_sdimg.802539', 1, None, None)
ERROR: Logfile of failure stored in: /home/claussenj/Workspace/Yocto/healthpi/build/tmp/work/raspberrypi4_64-poky-linux/healthpi-image/1.0-r0/temp/log.do_image_rpi_sdimg.802539
ERROR: Task (/home/claussenj/Workspace/Yocto/healthpi/sources/meta-healthpi/recipes-healthpi/images/healthpi-image.bb:do_image_rpi_sdimg) failed with exit code '1

No idea what I did, but somehow it can't add the blob to the image anymore. Any idea why?

[agherzan]

What machine are you building for and what revisions of the layers?

EDIT: Checking the logs, you are building for rpi4-64. What about the revision of the layers? Are you sure you have the kernel updated so that the dts exists?

[jclsn]

I think I found the issue. The above error only occurs when I explicitly append the blob to RPI_KERNEL_DEVICETREE_OVERLAYS. When I remove that line from my ``local.conf```it works. I wonder why though. Like this it is in there twice, but that shouldn't make a difference from my understanding.

I also have an issue with creating my own image. The splash screen is gone, although it is listed in SPLASH. Can I get support from you on this? It is not part of this topic. I also have another issue regarding libGL again, although I thought that I fixed it. Been trying for weeks to get my project to work on the Pi.