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How to print output to console when using a C Caller Block inside a Simulink model?

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Viv
Viv on 21 Sep 2021
Answered: Yongjian Feng on 21 Sep 2021
Hi everyone,
I am wanting to debug some C Code that I have implemented in a Simulink model of a feedback control system. I am using a C Caller block to do this. To help with debugging, I am wanting to print the value of a variable at different points of the function to the console. In the C code, I am currently trying to use printf() to do this. However, when executing, the function does not print to the Diagnostic Viewer or anywhere else I am able to see. When doing some research I came across mexPrintf(), however, this does not seem to be suitable for my issue as I am using the C code directly in the C Caller block. I have also tried using a display block to display values, but this only displays the final value of the output, as expected. Any help with how I would be able to print values at different points throughout the funtion would be appreciated!

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