VenusOS Pi 3B Waveshare CAN HAT overruns / errors

PJJ · June 19, 2023, 11:30am

Hello everyone.

I recently flashed the VenusOS on a Pi 3B from 2.8x to 2.94 (and have since updated to v3.0.0)
But I now have a error with the CAN comms from the Pylontech bank (5x US3000’s)

The Waveshare version is the old 8Mhz version.
My /u-boot/config.txt contains:

[all]
dtparam=spi=on
dtoverlay=mcp2515-can0,oscillator=8000000,interrupt=25,spimaxfrequency=1000000

Any suggestions?

Thaelian · June 19, 2023, 1:04pm

I use the same CAN HAT but I havent upgraded to v3.0 yet.

Have you tried using this setup helper?

github.com

kwindrem/SetupHelper/blob/main/ReadMe

The SetupHelper package provides:
    a mechanism to automatically reinstall packages following a Venus OS update
    an automatic update mechanism to keep packages up to date
        from GitHub archives or USB stick
	control of the automatic download and install from the GUI
	add and remove packages from the system
	manual download, install, uninstall from the GUI

    a "blind" install of SetupHelper from SD/USB media

	a blind uninstall mechanism which optionally includes reinstalling Venus OS

	backup and restore SOME settings from com.victronenergy.settings
		this includes custom logos and copying logs to removable media
			SetupHelper
			PackageManager
			gui

SetupHelper is also required for other packages
	SetupHelper includes utilities used by these packages

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This can be used to automatically configure the HAT.

Thaelian · June 19, 2023, 1:10pm

Then you need to use VeCAN

Thaelian · June 21, 2023, 8:50am

@PJJ Did you manage to resolve your issue?

PJJ · June 21, 2023, 1:03pm

Hello @Thaelian not yet, I haven’t invested time again, the comms do work, but because of all the rx errors there is obviously a delay in values updating, but it does seems to work ok-ish for now.

Thaelian · October 26, 2023, 4:06pm

@PJJ Did you manage to get this sorted? I have the same issue as you after upgrading to Venus OS 3.11

PJJ · October 27, 2023, 9:02pm

@Thaelian No, I never managed to fix it, if yours poped uo after a upgrade I would suggest just downgrading back to your previous version.

Thaelian · October 29, 2023, 9:38am

@PJJ I managed to fix the issue by upgrading the HAT from a 8MHz to the 12MHz version.