This is down to the Toyota Prius Gen3 with OEM control yes. Damien only spun it up on the bench.

Damien with my support is getting through bugs alot quicker now, always good to have a second set of eyes who is clued up on the code base.


I've found something odd in the code I think you are ...

I've found something odd in the code I think you are using: (this? https://github.com/damienmaguire/Stm32-vcu/blob/master/src/GS450H.cpp )

Line 580:
//mg2
htm_data[31]=(mg2_torque)&0xFF; //positive is forward
htm_data[32]=((mg2_torque)>>8);
htm_data[37]=htm_data[26];
htm_data[38]=htm_data[27 ...

A lot of very good work done here on the toyota comms. Sorry I was tied up with the house move while it was in progress.


Well it has been a while but we have got back to it recently, and have got the wheels turning on a Prius being driven on Synchronous Serial!
Just turning over from 30V power ...

Guess I'll continue talking to myself... Making some very slow incremental progress. Sadly we don't have a Savvycan like tool for analysing the toyota data so I've engaged a developer to write a tool that will do some basic data parsing. Have seen some references to some others working on this ...

The out3.csv data is looking really good, do you plan to tabulate it as live data and maybe highlight in red/yellow/green as the data bytes change?
You have done some great work there, it will be a very powerful tool for in depth hacking.
Which C compiler tool change do you use?
First look, the ...

I am just about ready to power up my Inverter, it only needs 12v to get sync serial communications, is that right?
200v is for spinning the motor, evbuilder?


30V is enough on the HV to turn things. 12V, about 1.5A on the Prius block I have been testing with. Woodfie has the experience with the ...

Thank you, and oops.

But I cant see that in the code I have?

I have this in version 3 user, "gs450h_v3_user.ino"

SerialDEBUG.println("\t0\t1\t2\t3\t4\t5\t6\t7\t8\t9");
SerialDEBUG.println(" ------------------------------------------------------------------------------");
for (int j=0;j<10 ...

Dale, you've changed the behaviour of the debug mth printout in your tidy-up. The "|\t" print should not be inside the if(j=0) bracket.

In Damien's code its 250000.
Could your 500000 be rising and falling edges therefore x2?
...
The GS450h_vcu code has

Serial1.begin(250000);



Screen Shot 2022-03-12 at 8.23.38 AM.png

I'm just saying what this logic analyser told me.

The tests with Woodfie we changed the numbers to 100 and ...

I suspect the same data is in all inverters but probably grew larger through the generations


Well I feel a little silly. I've been trying to decode this as a SPI port. But it isn't one at all. "Synchronous Serial" so it has a Clock sent with it to get the bit rate, however the bytes are still ...

Download from here. logic 1.2.18 (not logic 2)
https://support.saleae.com/logic-software/legacy-software/older-software-releases#logic-1-x-download-links
Then you can open Damien's logfiles


Oh, trouble...
Screen Shot 2022-03-10 at 3.34.23 PM.png
It looks like toyota updates at 5ms intervals ...

Arduino doesn't seem to support SPI slave on this device: I'm using USART0 and USART1 (Serial1 and Serial2 in Arduino lingo) and following this thread: https://forum.arduino.cc/t/using-usart0-and-usart1-in-spi-master-mode-or-spi-slave-mode/274172


Did you have a look here
https://forum ...

Here is a link to the whole set for a working example, and a small write up How To for getting it started.

100MB? Isn't it just a few hundred lines of code?!


Now I have to link it to a Prius inverter and see what happens then, or doesn't...
Anyone done this yet?
I might need Damien's help ...

I am planning to build a sniffer using an ESP32


To anyone who happens across this trying to build one of these, stay away from SPI slave with ESP32 or ESP8266. They seem only capable of emulating a memory chip so basically unsuitable for this task. See https://hydraraptor.blogspot.com/2018/04 ...

The video is here, running the Prius inverter over SPI, from around 35.00mins onwards
https://www.youtube.com/watch?v=SdLmId5oG7w
A SPI sniffer is here, https://ftdichip.com/products/c232hm-ddhsl-0-2/,
which will allow your PC to have control of the SPI bus or to sniff it at full speed ...

I am using a Pruis GEN-3 Inverter ...
I need the regen from the inverter to charge the onboard batteries (only a Prius Pack) and then tell the inverter to use the battery under demand from the engine ECU (Can Bus or Analog).
Had this been done before? I have seen Damien's video running the Prius ...

Now we have two "evbuilder" :) Not sure if that's even possible, but would you mind slightly changing your nickname?


Well I did see that and thought it could cause confusion. I chose it to be the same as my GitHub handle, not that there is much in there.

Let me see if I can change it...

Edit ...

That's amazing - thank you.

You're right about this inverter - as far as I know, no-one has it running with Zombie yet. But I've enlisted some helpers who are willing (perhaps in exchange for beer) to help me work it out. Seems like it would be a good package for a lot of people's projects so ...