reviving my Siemens Simatic IOT2000

I have a Siemens single-board device, based on Intel's Quark (RIP) series. After years of not using it, I'm going to revive it. It can run a recent Linux, is DIN rail mountable and well built

I neglected it once Intel gave up on Quark, but in essence that doesn't matter to me. I'm developing Linux applications for it, so the mcu isn't that significant. I'm going to avoid using bespoke libraries, but it can be a good edge device.

I was rather fluent with its software - built my own Linux from source. But all that knowledge has been lost. I guess I will not invest the same time anymore to study the platform - use it more as a service. Let's see.

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Jan Cumps over 2 years ago

I started my own fork of the Siemens yocto build.

First step: set the startup IP address to one in my network:
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Jan Cumps over 2 years ago

Getting there ...
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Jan Cumps over 2 years ago
Success. I was able to generate a fresh-from-source image, with some personal adaptions.
For self-training and to check if it actually is doing what I expect to do, I changed the out-of-box IP address that the device will start up with (github commit).

I had to throttle down the number of processors that the WSL Ubuntu (the platform that I use to build the Yocto image) could use, because I ran out of memory during the build:

wsl --shutdown

notepad "$env:USERPROFILE/.wslconfig"

[wsl2]
memory=12GB # Limits VM memory in WSL 2 up to 12GB
processors=8 # Makes the WSL 2 VM use 8 virtual processors

I'll now write an SD Card and test it ...
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Jan Cumps over 2 years ago

it works.
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Jan Cumps over 2 years ago

Not world-shocking, but I'm still a bit surprised that things work after all those hours of compiling, troubleshooting building the image

In the end, it took me an evening and an afternoon. Lots of that time was spent by my PC doing builds. I went to an art nouveau exposition around the corner with a friend in the meantime.
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Jan Cumps over 2 years ago
Getting a DNS registered: https://support.industry.siemens.com/forum/be/en/posts/2-dns-iot2040/265778

Execute fast, because conman overwrites this regularly

chattr -i /etc/resolv.conf unlink /etc/resolv.conf nano /etc/resolv.conf nameserver 8.8.8.8 nameserver 8.8.4.4 chattr +i /etc/resolv.conf

Setting the gateway to give internet access: https://support.industry.siemens.com/forum/be/en/posts/gateway-cannot-ping-8-8-8-8/223243/?page=0&pageSize=10

and disabling wifi connman.

/etc/init.d/connman stop
update-rc.d -f connman remove

I should now be able to remove the immutable attribute again
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Jan Cumps over 2 years ago in reply to ntewinkel

The database that comes with the example image is SQLite
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ntewinkel over 2 years ago in reply to Jan Cumps

I’m impressed that you were able to get all the pieces to fit and make a fully working image like that! With Node-Red even! Also impressed that the IOT2000 can do all that.
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Jan Cumps over 2 years ago

List of modules available for Yocto: https://cgit.openembedded.org/meta-openembedded/tree/meta-oe
and https://git.yoctoproject.org/poky/plain/meta/
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