[LITMUS^RT] Errors when trying to detect I²C on Raspberry Pi

[Erick Oduniyi]

Dear All,

I am trying to enable i2c on a Raspberry Pi 3 Model B+ running
4.9.80-v7-litmus+ so that I can move a hobby servo; however, I have not
detected the i2c interfaces.

I have enabled i2c through raspi-config and checked to see that the
relevant lines within /boot/config.txt were uncommented. I have even tried
to add the modules manually but still no progress:

[image: Screen Shot 2021-07-03 at 4.34.14 PM.png]

Using a non-Litmus Raspbian OS I can correctly detect and operate the servo:
[image: Screen Shot 2021-07-03 at 3.41.15 PM.png]

So, could something about the Litmus extension be blocking the i2c modules?
If so, how should I go about getting the interface working again? Any
guidance/help would be much appreciated!

For reference, I used the guide:
https://www.litmus-rt.org/doc/litmus-rt-on-raspbian.pdf

Best,
Erick
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