Why do I receive this error of "evaluating TimerFcn", "'BuildDirOrModelName' is invalid" in command window of Matlab? How this can be fixed?

This is the exact msg that I see in command Window. (I am using Simulink App with Simulink realtime - Speedgoat Hardware for my HIL Test)

Error while evaluating TimerFcn for timer 'timer-4'

Unable to get 'Value' parameter value on target computer 'TargetPC1': The value of 'BuildDirOrModelName' is invalid. Arguments for coder.getCodeDescriptor should be character vectors.

[Matlab Pro]

Hi @Shubham

In order to help you - please send the code sample

Anyhow - it is obviouse that the code poointed by the TimerFct is doing the error.

Can you add a breakpoint and debug?

Answer 1

[Sandeep Mishra]

Hi Shubham,

I recognize that you are using Simulink Real-Time with Speedgoat hardware for HIL test and facing the following error : “Arguments for coder.getCodeDescriptor should be character vectors”.

To resolve the issue, you can refer to the following MATLAB Answers post on “Real-time application running on a Speedgoat” and “Slrealtime Instrument” documentation respectively:

1. https://www.mathworks.com/matlabcentral/answers/517628-how-can-i-create-an-app-designer-app-to-control-tune-and-visualize-my-real-time-application-running
2. https://www.mathworks.com/help/releases/R2022b/slrealtime/api/slrealtime.instrument.html

I hope it helps.