BSI crash after few minutes about psavancanbridge

[morcibacsi]

Finding a color display with Bluetooth and USB support is almost impossible. It requires a very high version number. Sw revision above 60 (6x.xxx or something like that). Maybe the ref number 9667027580 is good, but this isn't 100% accurate info.

The first icon is only available when the radio is turned on as I remember.

The "Define the vehicle parameters" is always disabled as there is nothing you could set up on a car with a VAN bus (there would be settings to enable DRL, parking assistant, follow me home light and stuff like that, but those aren't available on older cars). So even if I'd enable the menu, it wouldn't do much.

The "Manage the telephone call" is only active during a phone call as I remember.

Regarding the BSI crash you can try enabling C1 so my board won't write anything to the VAN bus. Did you remove the original display? If you enable C1 and you don't have the original display the consumption info and the door status won't work, that is perfectly normal. So try enabling C1 and reconnect the original display, and check if the BSI still crashes.

[bronisMateusz]

Thank you so much for explaining everything. Actually leaving the old display in the 206 and enabling the C1 option solves all the problems. I did some miles today and there were no problems.

[morcibacsi]

Thanks for the feedback. I would like to fix this issue, and I would be glad if you could help me as I can't reproduce this issue on my car. Please capture some VAN bus logs for me if possible with the original display attached, and driving around for a few minutes. If you need further instructions I am happy to provide.

[bronisMateusz]

Sure, I will try to register something this week.
I understand that I need to connect via bluetooth the computer and ESP32, and read the logs in PlatformIO?

[morcibacsi]

VAN log via bluetooth

If you comment out this line: https://github.com/morcibacsi/PSAVanCanBridge/blob/main/PSAVanCanBridge/Config.h#L9
and remove the comment from the start of the next line: https://github.com/morcibacsi/PSAVanCanBridge/blob/main/PSAVanCanBridge/Config.h#L10
then bluetooth will be started instead of wifi. You can follow this guide on capturing with a phone: https://github.com/morcibacsi/PSAVanCanBridge/blob/master/wiki/debugging.md#3-van-bus-capture--software-replay
The log can be saved to a file in the ... menu on the right by clicking the Data/save item.

VAN log via USB

If you don't have an Android phone but you have a laptop, then you can connect with an USB (make sure you don't connect the 12V from the car in this case). Also in this case you don't need to modify the config,h file, you need to use the wifi version.
See on how to open the serial monitor in Arduino here:
https://forum.arduino.cc/t/using-the-serial-monitor-for-debugging-analysing-what-is-going-on-inside-your-code/978443
(make sure you select the correct COM port, and enable the "Show timestamps" checkbox)
The serial monitor output can be copied to a text file.

The best would be to have two logs, one with the original display connected and C1 enabled (1-2 minutes is enough, you don't need to drive, just make sure you open and close the door a few times). And another log with C1 disabled, and the original display removed (same method as the previous, maybe until the BSI crashes). This way I can try comparing the original behavior and my version, and try figuring out what is the difference which causes the BSI to crash.

Also I had an idea, regarding the crash, it is a shot in the dark, but try increasing this value to 500 and disable C1 (and remove the original display to see if that fixes the issue)
https://github.com/morcibacsi/PSAVanCanBridge/blob/main/PSAVanCanBridge/src/Van/Writers/VanDisplayStatus.h#L14

Thank you very much for your help and patience.

[bronisMateusz]

Ok, thanks for all the information. I have the logs. The one withoutC1 is really extensive, because I waited until the BSI stopped working.

logC1.txt
logWithoutC1.txt

Yesterday I also did another longer route (1.5 hours) and at the end I experienced strange behavior of the display and radio. They stopped working for a while. They would then turn on for a bit and turn off again (for longer and longer periods). This was a configuration with C1 turned on and the original display connected.

[morcibacsi]

Thanks for the log files. I analyzed them, and maybe I found something. To display the door status and consumption data the following happens: the BSI sends a message (lines starting with 0E 8C 4C) to the display that there is new data to show. When the display receives this message it sends a request (lines starting with 0E 56 4E) to the BSI for the new data. 56 4E is an awkward message as half of it is from the display, the other half is from the BSI.
With the original display it seems these messages are go side-by-side. So after a 8C 4C is received, a 56 4E follows immediately, and after that 8C 4C is received a bit later.
But with my code after I receive a 8C 4C even though I send the 56 4E almost immediately, the BSI keeps sending the 8C 4C, like if it wouldn't register my query with 56 4E.

I suspect I don't send the 56 4E "fast enough" after 8C 4C and the BSI keeps sending the 8C 4C again, and again. And maybe that causes the crash.

So... I would ask another pair of logs if you don't mind, where I can see the timestamps of the messages to verify this. As I saw you are using platformio on linux (?) I think you need to add monitor_filters = time to platformio.ini under monitor_speed to enable timestamps.

Yesterday I also did another longer route (1.5 hours) and at the end I experienced strange behavior of the display and radio. They stopped working for a while. They would then turn on for a bit and turn off again (for longer and longer periods). This was a configuration with C1 turned on and the original display connected.

I think this is caused by the overheating of the LM7805. I am going to modify the software so the Wifi hotspot won't be enabled all the time. That way the board won't draw that much current, so the LM7805 won't get overheated.

[bronisMateusz]

Sorry it took so long, but I was busy during the week. I'm uploading more logs from today.

I'm using PlatformIO on Mac OS and had to add in platformio.ini exactly this line: monitor_filters = time.
(this is for people who would like to do something like this someday too)

As for the logs themselves, this logWithoutC1 is very extensive, as BSI work surprisingly well for a long time. It was only when I tried to reset the mileage by holding down the button on the right stalk (the one from the wipers) that the BSI stopped working.
logC1.txt
logWithoutC1.txt

I think this is caused by the overheating of the LM7805. I am going to modify the software so the Wifi hotspot won't be enabled all the time. That way the board won't draw that much current, so the LM7805 won't get overheated.

As for overheating, my board looks like this:

Karol mentioned to me that for lowering the temperature I should use a voltage converter. Maybe this also affects this problem.

[morcibacsi]

Sorry for the late reply, I was busy with other stuff. Thanks for the additional logs, I saw the same as before 8C 4C is sometimes keeps getting sent, but I am not really sure if that is a problem.
However indeed it is strange that this time it took longer before it crashed. I am working on a newer hw revision where the overheating issue will be resolved, and maybe thee TSS463 also won't be needed anymore. It will definitely take a few weeks to finish it, so please stay tuned.

[bronisMateusz]

No problem, I know that such things can take some time. Can I still provide you with some additional data? A few comments earlier you mentioned:

Also I had an idea, regarding the crash, it is a shot in the dark, but try increasing this value to 500 and disable C1 (and remove the original display to see if that fixes the issue)
https://github.com/morcibacsi/PSAVanCanBridge/blob/main/PSAVanCanBridge/src/Van/Writers/VanDisplayStatus.h#L14

Would you still like to check it out?

[morcibacsi]

Well, you can give it a try, just to check all possibilities.