Creating Visual studio project with MATLAB coder generated code

Hi Mathworks,

I have generated the source code for the my matlab function using the MATLAB coder. I am also using a call to dsp.IFFT() in my code which has created a dspfft.dll dependency in my generated C code. I am trying to establish a visual studio solution to debug and run the generated code with custom main file. I have also used the packNgo function to package all generated code dependencies into zip before adding source in Visual studio. I am getting the following error in visual studio when the source code is trying to load this libray :

Could not open library: dspfft.dll.

To run the generated code outside the MATLAB environment, use the packNGo function.

Error: Could not open library: dspfft.dll.

To run the generated code outside the MATLAB environment, use the packNGo function.

Please let us know what what changes need to made to generated c source code to migrate into visual studio environment or how to setup other dependencies on the side of visual studio.

Note : Both the Matlab coder and DSP system toolbox are the latest version and licences for the same have been purchased.

Thanks and regards,

Kaushik Gowda

Answer 1

[Harsh]

Hi Kaushik,

Visual Studio is unable to open the “dspfft.dll” library, which is causing the error you are encountering. To setup external dependencies in Visual Studio please follow the below steps:

• Highlight your project in the Solution Explorer, and then select “Project > Properties”.
• Under “Configuration Properties > C/C++ > General”, add the folders C:\{Path to your project folder}\codegen\dll\dspfft and matlabroot\extern\include to “Additional Include Directories”. Separate the entries with a semicolon.
• Under “Configuration Properties > Linker > Input”, add dspfft.lib to “Additional Dependencies”.
• Under “Configuration Properties > Linker > General”, add the folder C:\ {Path to your project folder}\ \codegen\dll\dspfft to “Additional Library Directories”.

Refer to the following documentation for more information regarding this - https://www.mathworks.com/help/releases/R2021b/coder/ug/use-a-c-dynamic-library-in-microsoft-visual-studio-project.html

You may check the following “MATLAB Coder Interface for Visual Studio Code Debugging” from file exchange to debug the code generated by MATLAB coder in Visual Studio Code - https://www.mathworks.com/matlabcentral/fileexchange/103555-matlab-coder-interface-for-visual-studio-code-debugging