Dev1 Galaxy Forum / I2C, Devuan and Raspberry PI 4B (8GB)

Re: I2C, Devuan and Raspberry PI 4B (8GB)

dummy@example.com (tuxd3v) — Mon, 22 Mar 2021 03:02:37 +0000

hello Johnnie390,

Can you mark this thread as Solved?

Re: I2C, Devuan and Raspberry PI 4B (8GB)

dummy@example.com (Johnnie390) — Sun, 28 Feb 2021 08:47:35 +0000

Hallo all,

an entry in /etc/modules fixed same. Thanks.

Re: I2C, Devuan and Raspberry PI 4B (8GB)

dummy@example.com (c0rnelius) — Sat, 27 Feb 2021 15:02:48 +0000

Alright, well I just installed some needed bits and it seems to be appearing for me.

uncomment:

dtparam=i2c_arm=on
dtparam=i2s=on
dtparam=spi=on

Install:
sudo apt install -y python3-dev python-smbus i2c-tools python3-pil python3-pip python3-setuptools python3-rpi.gpio

make sure the above modue is in /etc/modules and reboot.

Came right up:

ls /dev/i2c*
/dev/i2c-1

patrick@devuan:~$ sudo i2cdetect -y 1
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:          -- -- -- -- -- -- -- -- -- -- -- -- -- 
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 
70: -- -- -- -- -- -- -- --

Re: I2C, Devuan and Raspberry PI 4B (8GB)

dummy@example.com (Johnnie390) — Sat, 27 Feb 2021 14:43:12 +0000

Had already uncommented the line in /etc/modules but I appreciate the assistance anyway.

Regards,

Re: I2C, Devuan and Raspberry PI 4B (8GB)

dummy@example.com (c0rnelius) — Sat, 27 Feb 2021 13:45:45 +0000

sudo modprobe i2c-dev

cat /etc/modules If you see it already there, then uncomment it and upon reboot it should load every time. If not, just add it to the file. i2c-dev

I2C, Devuan and Raspberry PI 4B (8GB)

dummy@example.com (Johnnie390) — Sat, 27 Feb 2021 10:54:59 +0000

Hello all,

I am running the above in an Argonone M.2 case.
To control the built-in fan (temps/speed) for the case, there is software to do this (https://gitlab.com/DarkElvenAngel/argon … -0.3.x.zip).
This setup worked flawlessly on RPIOS 64-bit.

In /boot/config.txt, I have this entry dtparam=i2c_arm=on, however I cannot speak to the I2C bus using e.g. i2cdetect -y 1 at all.

Example -

i2cdetect -y 1
Error: Could not open file `/dev/i2c-1' or `/dev/i2c/1': No such file or directory
root@magalas:~# i2cdetect -y 0
Error: Could not open file `/dev/i2c-0' or `/dev/i2c/0': No such file or directory
root@magalas:~#

As can be seen from the above screenshot, I am dead in the water before I start...

Anyone any ideas?

Regards,