Garo Efacec log files

[toegema]

I did a "Sunday afternoon" adapter test drive today in Norway, and boy does it perform well (Clara 336)! Very happy with the release. I went to all the Tesla Superchargers, V2, V3 and V4 = perfect performance. Also Kempower, Delta, ABB and Hyperchargers worked very well. But then I came across an outdated (soon obsolete) 50 kw Garo Efacec charger I wanted to try. And here it did not work (never worked with the original firmware either). I tried all three machines (they were the same) and then I collected log files. I thought maybe you (= osexpert) wanted to have a look. I don't even know if it's worth the effort to try to fix this charger regarding new firmware if there is a chance that it might "break" some other/more important compatibility? This Efacec charger is an old 50 kw which probably all of them also have Chademo anyway. And since you can only charge one car at a time, you would only need to use the adapter if the chademo plug happens to be broken/out of service. So maybe not worth the effort. But feel free to take a look at the log file, as I am also curious what caused the charging session to fail. I could not understand much of the log file other that reading "Difference too big" several places. Any thoughts?
serial_20260503_155059.txt

[osexpert]

Thanks. What car is it? Is it possible to get a log from this car from a successful charging (on any other charger)?

[toegema]

This is an Xpeng G3 (their only CHAdeMO car in Norway). Sure, I will make a log file of a successful (other) charge. I will provide it here as soon as I have made one. Thanks

[osexpert]

The car report the soc very late, compared to cars I have seen. I just wonded if it always does this, or maybe just by chance. A log from a successful charging may tell more.

[toegema]

At some stations the charging starts quite quickly and some others it takes a little more time. But yes, we will see. ☺️

[FreifunkerEZ]

Fun fact: in January, I was on a road-trip and tried to charge on an old 50kw triple-charger (high amps AC, chademo, ccs). But the app did not manage to authorize charging on the chademo port. Getting desperate and running out of options, I used the adapter with the CCS-Port and the app managed to authorize that right away. 🤷
If you had told me that I would need to use the adapter on a charger that has chademo, I would not have believed it. 😀

[toegema]

That is indeed funny. ;-) I had a similar experience once where the Chademo plug at an ABB was defective so I had to use the adapter on the CCS. Anyway: osexpert: Here is a log file from Xpeng G3 from a working session on a Kempower charger. Hopefully you have something to compare against the Efacec file as you asked.
serial_20260504_120734.txt

[osexpert]

Experiment SX:
https://github.com/osexpert/ccs32clara-chademo/actions/runs/25626506687
20260510-354-SX

[toegema]

Good news! 354-SX worked fine at the Garo Efacec with Xpeng! Great job!
Here is the log file of the successful session:
serial_20260510_161133.txt
I also rechecked the following other stations with 354-SX: Tesla V3, Kempower, Delta, HYC300 and they still work fine also.

I also made a "cross check" with the regular 354 just to double check, but as expected that one failed at Garo:
serial_20260510_161403.txt

So, this is very good. Your last suspicion was correct. :-)

But the question now is... is it possible to implement your findings here into the general firmware? Or will there have to be a separate "Xpeng" version of the firmwares? I mean, except from this Garo station, the regular firmware works everywhere else I have tested the regular firmware and Xpeng. Just curious. The fewer "special" versions, the better I would think, as long as it doesn't mess up anything for other cars.

[osexpert]

Great. Thanks for testing.

"Or will there have to be a separate "Xpeng" version of the firmwares?"
It imagine will be like you see it currently in the action run download: a separate SX build, similar to the SS build and the regular build.

"The fewer "special" versions, the better I would think"
Absolutely. SX may have potentional to take over for the other two, but its not easy to tell without testing.
At least it would be nice if SS could be dropped.

The standard version is "logically" the best, as it does not fake anything, it just times the "meeting point" well. Its very sensitive to timing, but most chargers are relaxed so it works most of the time.

SS build fake initial voltage and soc for ccs, but nothing faked for chademo. Also timing sensitive.

SX build is worst of both: it fake a chademo charging from the start, and it fake initial voltage and soc for ccs :-D But it should in theory be immune to timing sensitivity.

[toegema]

Ok. Good. I don't know how versions work in the programming world, but is it much extra work for you to maintain these special versions when you make newer firmware? Or is it maintained somewhat automatically? It would indeed be very nice if both Lexus and Xpeng and all the other cars could use one single fw. But maybe we will get there if more people are willing to test. I have only access to my Xpeng G3, but others might be able to test these spesial versions to see if they are compatible with their car..? ;-)

[osexpert]

"but is it much extra work for you to maintain these special versions when you make newer firmware? Or is it maintained somewhat automatically?"
Not much extra work, there are checks in the code that does different things based on the "mode". It probably does make the code more confusing and harder to understand. The different builds basically pre-select the mode, like a rotating switch could have done the same thing.

"It would indeed be very nice if both Lexus and Xpeng and all the other cars could use one single fw."
At least if I could remove SS, it would be a good start. Then only need to know if SX works on Lexus:-) Removing the standard build will be worse:-)

[toegema]

I think I know someone who could check the SX build on his Lexus. The same person (in Finland I believe) who checked the SS version. søn. 10. mai 2026 kl. 20:54 skrev osexpert ***@***.***>:

…

"but is it much extra work for you to maintain these special versions when you make newer firmware? Or is it maintained somewhat automatically?" Not much extra work, there are checks in the code that does different things based on the "mode". It probably does make the code more confusing and harder to understand. The different builds basically pre-select the mode, like a rotating switch could have done the same thing. "It would indeed be very nice if both Lexus and Xpeng and all the other cars could use one single fw." At least if I could remove SS, it would be a good start. Then only need to know if SX works on Lexus:-) Removing the standard build will be worse:-) — Reply to this email directly, view it on GitHub <#60 (reply in thread)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AMBXG3JZTTQO3RFCS6MKPWL42DF7LAVCNFSM6AAAAACYPHBX6SVHI2DSMVQWIX3LMV43URDJONRXK43TNFXW4Q3PNVWWK3TUHMYTMOBXGE3TKNI> . You are receiving this because you authored the thread.Message ID: ***@***.*** com>

[toegema]

"Removed support for late ccs plug insertion" - This is totally fine, but only curious... What is the reason for doing it? ☺️

[osexpert]

Already saw a problem and made a new one:
https://github.com/osexpert/ccs32clara-chademo/releases/tag/20260512-369

"Removed support for late ccs plug insertion" - This is totally fine, but only curious... What is the reason for doing it?
Then I can power off the adapter off instantly without holding the button for 5 seconds (this became more annoying now that I am testing SX more. DS always had instant off, but SS and SX did not). I am not sure why I added it in the first place (I remember now, it was because with the original fw, you can, and I tried to copy the logic). But IMO it is a bad logic and serve no purpose. Plugging or unplugging anything while the adapter is on is dangerous and should not be encouraged.

[toegema]

I totally agree 👍🏻
It's good practice to connect physically before turning on anything 😇

[toegema]

Also, regarding: "Make charging work on Garo Efacec in SX build":
It's a shame my friend sold his Leaf, otherwise I would have tested if the Garo Efacec in question would or would not work with the regular (ds) firmware. We know the Xpeng doesn't, but it might have been interesting to know if the same would happen on a Nissan Leaf. What do you think? If it's important to find out, I could try to see if I can reach anyone with a Leaf at that same station. If not important, I'll use my time on something else. 😂

[osexpert]

I am pretty certain the problem is car agnostic:-) So no worries.