Devkit_ctrl UnicodeDecodeError?

Software
1

Hi,

Since moving to the latest CERN-IPMC devkit, I get this error while trying to use:

 $ devkit_ctrl -a get_atca_blueled
Traceback (most recent call last):
  File "/ipmc/ipmc-tester/ipmc-tester/DevKITControl.py", line 508, in <module>
    IPMCDevObject = IPMCDevCom.IPMCDevCom()
  File "/home/pi/.local/lib/python3.9/site-packages/IPMCDevLib/IPMCDevCom.py", line 21, in __init__
    if 'IPMCTP_CTRLER' in hello.decode():
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xfe in position 0: invalid start byte

How can I get a patch and update the CERN stack please ?

Best regards,
Sylvain L.
LAPP

2

Hello Sylvain,

what parts of the software did you update on the tester?

cheers,

Stefan

3

I updated nothing yet.

4

Hello,

so was it working before or is it the first time you use the tester?

cheers,

Stefan

5

Hello,

No its the very first run on the new devkit.

6

Hello Sylvain,

What is the python version that is being used? Should be 3.9.2. It’s possible that the software for the Raspberry pi on your tester is not up-to-date. Can you please try the following:

git clone https://gitlab.cern.ch/ep-ese-be-xtca/ipmc-devkit.git
cd ipmc-devkit
python setup.py install --user

Let me know if this helps.

cheers,

Stefan

7

Hello Stefan,

I had another FTDI device connected on the Pie that seems to cause part of the problem.
Once disconnected, it still fails on the first try (after a fresh reboot), but afterward it works back…

Best reagards,
Sylvain L.