question

Florian avatar image
Florian asked

Cerbo GX sends unsolicited data via USB to RS232

Hi! When I connect a FT232 USB to serial converter to the Cerbo GX it starts sending unsolicited data periodically (every few seconds). Checking with an oscillosope, I found at least two different baudrates being used. I tried with normal and large Venus OS image, both the same. How can I disable this? It is screwing the intendet communication. Any suggestions? Thanks!

Venus OScommunication protocol
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
telekatz avatar image
telekatz answered ·

You need to disable serial-starter for this adapter:

https://github.com/victronenergy/venus/wiki/howto-add-a-driver-to-Venus#howto-make-serial-starter-ignore-certain-usb-types

3 comments
2 |3000

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Florian avatar image Florian commented ·

Thanks a lot telekatz!

Unfortunately, only the temporary solution (/opt/victronenergy/serial-starter/stop-tty.sh ttyUSB0) works for me.
When I make the serial starter to ignore the RS232R_USB_UART permanently (by adding a line in /etc/udev/rules.d/serial-starter.rules), also the grid meter, which uses the same chip, is not detected anymore.

0 Likes 0 ·
Show more comments

Related Resources

Victron Venus OS Open Source intro page

Venus OS GitHub (please do not post to this)

Additional resources still need to be added for this topic