invalid data type 'linuxCANMsg' with CAN Receive RPi block and Matlab r2022a

Hello,

I am trying to use a Raspberry Pi 4 with Simulink with a physical CAN interface (using the Simulink Rpi CAN Receive block), and with its output type set to 'CAN Msg' so I can then use the CAN Unpack from the vehicle tool box.

This has worked before (r2021b I think) but we have updated to r2022a it appears to be broken - I don't have the previous version of Matlab installed anymore to double check if its me, or a Matlab issue, but am wondering if anyonelse has the same issue / knows of a fix.

I have commented everything out in the project, so even with just the 'CAN Receive' block present and its output set to CAN Msg type it fails.

This is the error when attenpting to build of update the model:

MATLAB System block 'CANtoUDPrpi/CAN Receive1' error occurred when invoking 'getOutputDataTypeImpl' method of 'codertarget.raspi.internal.CANReceive'.

....

Caused by: Reported by CANtoUDPrpi/CAN Receive1: 'getOutputDataTypeImpl' method of the System object 'codertarget.raspi.internal.CANReceive' for 'CANtoUDPrpi/CAN Receive1' returned invalid data type 'linuxCANMsg' for output port 1. The return value must be a character vector of: built-in data type, name of embedded.numerictype object, name of Simulink.enumeration class, name of Simulink.Bus object, name of Simulink.NumericType object or name of Simulink.AliasType object.

Component:Simulink | Category:Block error

Many thanks, Sean.

[Nirmalkumar Doreraju]

Hi Sean,

What is the version of the Raspberry Pi Support Package that you have installed ?

Have you tried to uninstall and install the support package to see if the error still persists?

Regards,

Nirmal

[Sean Murray]

Hello Nirmal,

Its a clean install with Simulink support package for rpi 22.1.0, and MATLAB support package for rpi 22.1.2. (so everything is the latest version avialable).

I tried un-istalling the raspberry pi add-ons, rebooting, and re-installling but am still getting the same error.

Can you replicate this on you system? i.e. placing a CAN Recieve block in a new blank model, seeting its output to 'CAN Msg', and do you get the same error?

Thanks, Sean.

[Sean Murray]

Anyone?

[Henry Rake]

Hello Sean,

were you able to fix the Problem? I have the exact same problem!

Kind regards

Henry

[Sean Murray]

Yes - it was resolved by clicking 'help' in RESOURCES on the main Matlab window, and then checking for updates and installing the latest updates for the RPI.

Hope this also works for you..

Sean.