Mainsailos canserial[757]: CAN write: No such device or address

Frontends Mainsail
1

Hello Folks

I have been having issues with MCU <=> Host communication issues.

When I check /var/log/syslog I keep getting the following through the print every 6 seconds:

Jun 22 15:26:47 mainsailos canserial[757]: CAN write: No such device or address

Jun 22 15:26:53 mainsailos canserial[757]: CAN write: No such device or address

Jun 22 15:26:59 mainsailos canserial[757]: CAN write: No such device or address

Jun 22 15:27:05 mainsailos canserial[757]: CAN write: No such device or address

Jun 22 15:27:11 mainsailos canserial[757]: CAN write: No such device or address

Does anyone know if this is an issue? If so, how to fix it?

Setup:
Octopus Pro v1.1 (stm32h723) (Canbus USB bridge)
SB2209
RPi 4B 2GB

There seem to be no CAN issues, according to mainsail.
bytes_retransmit 0
bytes_invalid 0
etransmit_seq 0

moonraker (9).log (45.3 KB)
klippy (2024-06-20).log.zip (2.2 MB)

2

Your log reports

b'Got error -1 in can write: (11)Resource temporarily unavailable'
b'Halting reads due to CAN write errors.'

multiple times.

It could be your cable setup.

What is your can0 network setup on linux?

120R ist set on the EBB?

3

The prints are completing even though this error is being reported.

The network is:

allow-hotplug can0
iface can0 can static
  bitrate 1000000
  up ifconfig $IFACE txqueuelen 1024

The 120R is on the SB2209.

The cable is as provided by BTT.

4

Please read this:
https://www.klipper3d.org/CANBUS_Troubleshooting.html#use-an-appropriate-txqueuelen-setting