File for pressure calibration settings?

[Ulric2]

I'm running a Fineoffset WS3085. When the base station crashes as it does periodically, I've set up a serial relay and a Python script which briefly interrupts the power to the base station to reset it automatically. After each reset, I need to recalibrate the pressure sensor and I can get an accurate enough value from an API. It would be nice to add a couple of lines to the Python script and just have it recalibrate the pressure automatically using the API value. However, I'm having difficulty finding where the calibration settings are stored IN MX - can someone help me out and tell me which file I need to write to? Thanks.

[mcrossley]

The offset is stored in cumulus.ini

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[Station]
EWpressureoffset=

You should only alter value that with Cumulus stopped.

[Ulric2]

Thank you! I will stop the service, edit and then restart it!

[Ulric2]

I'm using Python to read the .ini file and then write new values into it and save it but when Cumulus starts, it appears to delete the file and replace it with a blank one. Could that be because the line endings are wrong? Im on Ubuntu 22.04. I'm just not sure what it is about the file that Cumulus doesn't like but I'm assuming it runs some sort of validity check at startup and replaces anything it doesn't think is a valid ini?

[mcrossley]

The log file will tell you if it is recreating Cumulus.ini The only time it does that is to remove old, deprecated entries, and all the remaining entries will be the same.

It sounds in your case though as though it cannot parse the file at all, so creates all new default entries and writes that back to the file.

[ConligWX]

have you tried using sed perhaps? just a thought.

something like:

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sed -i '/^EWpressureoffset=/!b;n;c\EWpressureoffset=new_value' cumulus.ini

[Ulric2]

I think it can't parse the file at all so it must be something to do with the way the Python library I used (configparser) writes the file.

Thank you, ConligWX for the sed suggestion. I will now try a sequence where I read the values I need for my calculation, stop MX, make a copy of the config file, sed the change into it and then if no errors are encountered cp the file back into place before starting MX again.

[mcrossley]

Ah! I didn't release you were using an INI file parser, which is a bad idea. The MX INI file parser is customised to deal with types unique to CMX.

[Ulric2]

It's OK, sed works a treat