OK, back and checking. It finally works. But with a twist... the whole time I set up the can nterface to connect to my wifi, following I was using inverter.local to connect and since my computer (Windows) doesn't pick it up, I was using my phone (iphone) with safari...
The phone doesn't work ...

Yes, thanks!!

Great, will try when I get back. For the Tesla SDU, the stm32-sine.hex is the build to use, right?

Ok, thanks. I hopked up directly to the pins on the breakpit to the sdu board. It works so I should be able to get the sw installed this way woth abuart interface. Unfortunately i did not solder pins here and now the board is installed with the current sensors…
I am out of town for a few days, will ...

Thanks for the fast reply, great work you’re doing here!

Problem is i only have the CAN card so it’s not easy to validate the baud rate nor check the sw version.
How do I go about this, can I run some commands using the uart directly with a rs232 interface?
Anty reference for the commands?
I tried ...

Hi, I have been starting up a Tesla SDU with a can-based wifi module.
Should have been simple enough but I have not been able to get the connection working between the STM and the ESP32. I measured all voltages and my best guess is the can transciever is shot. It measures 1.27 volts, CANL to ground ...