Failed install i2ctools

[yfx4]

I tried to install I2C-tools this morning ahead of my new temperature sensor arriving. The last lines of the install are:

Setting up i2c-tools (3.1.0-2) ...
/run/udev or .udevdb or.udev presence implies active .udev. Aborting MAKEDEV invocation.

when I type sudo i2cdetect -y 1
it says
Error: Could not open file 'dev/i2c-1' or 'dev/i2c/1': no such file or directory

I tried to reinstall i2ctools but it says I have the newest version already.

Can I fool my RPi into thinking it has an older version?
Can I uninstall the i2c tools?
Or just get another SD card, install the i2c tools, then copy the files over to my existing SD card? If so, which directories should I copy?

THANKS!!!

[abishur]

Which distro are you using?

[joan]

Which distribution are you using?

Have you un-blacklisted the i2c modules and have you loaded the i2c kernel module?

sudo modprobe i2c_bcm2708 # to load the i2c module

lsmod # to check it's loaded

[yfx4]

I installed Raspbian from the NOOBS file I downloaded here 3/20/14. It is v. 1.3.4. dated Jan 07, 2014.

I DID # the blacklist file.

I will use the code you suggested to load the i2c kernel. I did not specifically do that.

I was following the guide posted as Lesson 4 in the adafruit learning section of their site. The python-smbus seemed to load fine.

I will try the code you suggest this evening. My temp sensor shipped today and should arrive Friday in time for my project.

Thank You!!!

[paulie]

Which version of RPi do you have? Pre-mounting holes (v1 = i2c bus 0 ) or with mounting holes ( v2 = i2c bus 1 ) ?

Running i2cdetect will give errors if you look for a nonexistent bus

[yfx4]

I have the Model B 512K Ram

[yfx4]

I ended up being able to remove the failed install. Then I rebooted and re-did the install with no errors.

sudo apt-get remove i2c-tools

once the temp probe arrives I will know if I was successful.

Thanks for your help!

[noxo]

I also had a short fight with this, reason were that i2c-dev module were not loaded.

try:

Code: Select all

modprobe i2c-dev

i2c-dev module should be also added into /etc/modules file, so you don't have to modprobe
i2c-dev module after every reboot.

Code: Select all

# /etc/modules: kernel modules to load at boot time.
#
# This file contains the names of kernel modules that should be loaded
# at boot time, one per line. Lines beginning with "#" are ignored.
# Parameters can be specified after the module name.

snd-bcm2835
i2c-dev

after this, installation of i2c-tools passed ok, without error.

[yfx4]

Cool.. I will try that.