FYI, I fixed it for now.
Load i2c via dtparam to see 3 i2c-devices.
root@counter:~# grep i2c /boot/firmware/config.txt
# Enable i2c
dtparam=i2c_arm=on
root@counter:~# ls /dev/i2*
/dev/i2c-0 /dev/i2c-1 /dev/i2c-2 /dev/i2c-3
root@counter:~#
On 15.03.24 10:52, basti wrote:
Thx for this tip, but
Thx for this tip, but there is only i2c-0 and i2c-1
root@counter:~# lsmod | grep i2
i2c_dev24576 0
root@counter:~#
root@counter:~# ls /dev/i2c-*
/dev/i2c-0 /dev/i2c-1
root@counter:~# i2cdetect -y 0
0 1 2 3 4 5 6 7 8 9 a b c d e f
00:
Supposedly the i2c bus you found is one of the HDMI lines, they use i2c
for EDID and other information. My real time clock is on /dev/i2c-3.
alex@aws:~:(13)> i2cdetect -y 3
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- --
10: -- -- -- -- -- -
Hello,
i have a raspi 4 with a RTC. Since some days I have a problem with the i2c.
The RTC is not found anymore.
So i disconnect the RTC and do a i2cdetect -y 1 and it looks like:
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: 08 09 0a 0b 0c 0d 0e 0f
10: 10 11 12
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