Got fed up manually starting my SocketCAN interface on Linux. Turns out to be quite simple to configure a CAN bus to be started automatically: https://www.pragmaticlinux.com/2021/07/automatically-bring-up-a-socketcan-interface-on-boot/ This uses systemd-network which knows how to manage SocketCAN ne...

I've raised a PR to embed the git version information into the firmware. The existing VER macro is used to generate the "version" spot value. When the database is downloaded over CAN this will update. The version generated uses git describe which means that release versions will take on th...

What is the most github-ish way to built a binary of every commit or something? Github Actions are free for Open Source projects. I have a branch that does 90% of what you want here: https://github.com/davefiddes/stm32-sine/blob/github-actions/.github/workflows/CI-build.yml It would need a final st...

Neat!

Glad you got things working. The setup of CAN sessions on Linux can be a bit of a pain though it's good when you get it running. Happy to accept PRs. I built the tool in python so it would be approachable to more people than typical OI projects. I've been away from OI and car related projects for a ...

I personally wouldn't want to argue with a bunch of lawyered up ex-Telsa owners and Tesla Inc should the worst come to the worst. If you are cool with that fair enough. I probably spent too long on Slashdot in the late 90s and early 2000s.

Does the inverter have OTP? Are there "things" on the inverter than uniquely identify it? "things" that are used as part of the handshake? Yes. The TMS320F28377D has a whole security sub-system with a pair of secure zones for each of the two processors. There is a region of OTP ...

It was the 5.27.R-sine release version. I don't have a reliable way to update the firmware on my board at the moment.

I've pushed a fix to the tool which filters out any erroneous bytes anyway. I found it harder to replicate than I first thought so had to rely on unit tests which is not a bad outcome.

Managed to get my "inverter" (an STM32 Bluepill on a breadboard) into Run mode and can now replicate this reliably. Should definitely filter it client side even if you are able to fix the problem. I need to be a bit cleverer in processing the incoming data stream as binary and remove the N...

It's been well behaved for me. I mostly have been testing in opmode off which might account for that.

Slow progress on my side as summer has arrived here at long last. Hope to make more progress next week.

Seems workable. If you let me know when you've got some code I can work against I'll update the tool.

That sounds workable I think. Would you allow updating of existing entries or would they have to be deleted and recreated? Might be nice if adding with an existing CAN ID/parameter pair would replace the existing mapping details. When listing I'm assuming I have to iterate through each sub-index unt...

Sorry for the slow reply. Not been working on OI or CAN for a while and the thoughts are a bit dusty. I wonder if it would be simpler and more logical to map the CanMap directly to a CAN SDO Index. That is, have the index be the position within the Tx or Rx CanMap. The sub-indices could then be the ...

Interesting. The stateful nature of the sub-index 0 and 1 or 2 is unconventional but should be OK. For it to be useful as a general API I think we need a read capability. Just reading back from the sub indexes 0, 1 and 2 would be fine. Listing all mappings would require a brute force of all known pa...

Ah. That's not going to work. You can't really have two SDO clients modifying the same device simultaneously. If you have control over your BMS software it would be better to get it to output the DC current limit in a new CAN message at regular intervals. Then you can map that as an CAN RX parameter.

It should be fine on a busy bus. It's important when running multiple openinverter systems that they have unique "nodeid" parameters. With the default config you are using the tool will send messages with ID 0x601 and the inverter will reply with ID 0x581. If there is a conflict on the bus...

Thanks for giving the tool a shot. I'm sorry it's not working. If I understand you correctly "oic scan" is reporting that your inverter is communicating ("Found possible openinverter node: 1")? It should be possible to run "oic listparams" to get a list of all of the po...

Just released v0.0.8. This adds: Parameter databases are now cached locally. This is a *massive* usability improvement and minimises CAN traffic in normal use. Requires a very up to date stm32-sine development build. Works automatically for any project using an up to date libopeninv. It is now possi...

That's a good spot. Should have been able to pick them up with openinverter_can_tool if I'd tested it more thoroughly.

I have a cunning plan for how to detect this error automatically at compile time. Look for a libopeninv PR later.

One slight pain is that when using serial monitor window within PlatformIO it drives the two lines active so holding the ESP32 in reset. There is a standard(ish) bit of logic fitted to most dev boards to tackle this problem: ESP32-programming-header.png This is from the Espressif ESP32-Core-Board-V...

That's good news. I've got parameter caching going today and it really improves the responsiveness of the tool.

Makes sense to have one go-to tool I think so I was planning on adding firmware update support. I need a utility that will work with the C2000 as well as your STM32 CAN bootloader. Have a feeling that the protocol can't be 100% identical due to architectural differences but haven't really got to des...

Just released v0.0.7. This adds: Enumeration and bitfield parameters are now displayed with the symbolic name rather than a number. Logging to a file will now flush the output after each line allowing you to "tail -f" the output to see what's being logged. A bug in the stm32-sine v5.24.R p...

Using this, I had a look to some of the efacec files, only see "middle of the charging loop", currentDemand, with mostly around 392V and 50A, stable SOC of 24 percent. Looks like a dummy-load-charging to me :-) A lot of the captures are mid-session. I think it was tricky for Damien to jug...