Latest python I2c module issue

[Paul Austen]

Not sure if this is the place to raise this but the latest pythonI2c module appears to have an issue.

I get

python
Python 2.7.13 (default, Sep 18 2017, 20:32:03)
[GCC 5.4.0] on linux2
Type "help", "copyright", "credits" or "license" for more information.
from OmegaExpansion import onionI2C
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: Error relocating /usr/lib/python2.7/OmegaExpansion/onionI2C.so: i2c_writeBufferRaw: symbol not found

The latest i2C packages appear to be broken

pyOmegaExpansion_0.5-1_mipsel_24kc.ipk
pyOnionI2C_0.5-1_mipsel_24kc.ipk

Have the problem I described. I dropped back to

pyOmegaExpansion_0.4-1_mipsel_24kc.ipk
pyOnionI2C_0.4-1_mipsel_24kc.ipk

And the problem went away.

Regards

Paul

[Patrick Fehr]

Same problem here.
I tried downgrading with several methods but unsuccessful.
Package pyOmegaExpansion version 0.4-1 has no valid architecture, ignoring.
@Paul-Austen how did you downgrade if I may ask?

http://repo.onion.io/omega/packages/pyOmegaExpansion_0.4-1_ar71xx.ipk
http://repo.onion.io/omega/packages/pyOnionI2C_0.4-1_ar71xx.ipk

PS: The low version of opkg itself allows for no opkg install package=version notation and if I use --force-downgrade opkg installs 0.5-1 regardless.

These tickets might be related/duplicates:
https://community.onion.io/topic/2438/python-import-error-on-pyonioni2c
https://community.onion.io/topic/2436/onioni2c-import-error

[Paul Austen]

Initially I reset the Omega2 to factory settings using the following from a serial console

firstboot -y
sync
reboot

After setting up the wifi I then copied the following files to flash via scp

pyOmegaExpansion_0.4-1_mipsel_24kc.ipk
pyOnionI2C_0.4-1_mipsel_24kc.ipk

and then ran

opkg install pyOmegaExpansion_0.4-1_mipsel_24kc.ipk
opkg install pyOnionI2C_0.4-1_mipsel_24kc.ipk

This did the trick.

However

opkg remove pyOmegaExpansion
opkg remove pyOnionI2C

Followed by

opkg install pyOmegaExpansion_0.4-1_mipsel_24kc.ipk
opkg install pyOnionI2C_0.4-1_mipsel_24kc.ipk

should do it.

I downloaded the two package files from
http://repo.onion.io/omega2/packages/packages

Paul

[Paul Austen]

@Paul-Austen my mistake the download URL should be http://repo.onion.io/omega2/packages/onion/

[Paul Austen]

@Paul-Austen said in Latest python I2c module issue:

from OmegaExpansion import onionI2C

Just tried the following minimal workaround

opkg remove pyOnionI2C
opkg install pyOnionI2C_0.4-1_mipsel_24kc.ipk

and this gets rid of the import error

Paul

[Patrick Fehr]

@Paul-Austen

I see my mistake, I was getting the packages from the wrong repo (onion instead of onion2). Rookie mistake.
Now everything works - except fo course for both packages 0.5-1 version remains broken.

Thank you very much!

I have put all steps together for future visitors

For onion omega2:

$ wget repo.onion.io/omega2/packages/onion/pyOnionI2C_0.4-1_mipsel_24kc.ipk

$ wget repo.onion.io/omega2/packages/onion/pyOmegaExpansion_0.4-1_mipsel_24kc.ipk

$ opkg list-installed | grep pyO
pyOmegaExpansion - 0.5-1
pyOnionI2C - 0.5-1

$ opkg remove pyOnionI2C pyOmegaExpansion

$ opkg install pyOmegaExpansion_0.4-1_mipsel_24kc.ipk 
Installing pyOmegaExpansion (0.4-1) to root...
Configuring pyOmegaExpansion.

$ opkg install pyOnionI2C_0.4-1_mipsel_24kc.ipk 
Installing pyOnionI2C (0.4-1) to root...
Configuring pyOnionI2C.

$ opkg list-installed | grep pyO
pyOmegaExpansion - 0.4-1
pyOnionI2C - 0.4-1

[ccs hello]

Is it for Omega1 or Omega2
or it's for both?

[Patrick Fehr]

@ccs-hello the problem can be reproduced on Omega2+ but I don't have an Omega1 so I am unable to make a statement for Omega1.