can I use custom libraries (dlls) written for matlab with Thingspeak

I have developed some custom libraries (dlls written in C++) that I call and use in analysis using desktop Matlab.

Is there a way to use these libraries with thingspeak ?

Are there any alternatives or workarounds that would serve the same purpose.

[Vinod]

Can you say more about the DLLs and what they do? Do you have a git repo where the code is accessible?

[Hatim Motiwala]

For example one of the libraries calculates thermodynamic properties of air and gas mixtures using different numerical methods. I have coded these myself several years ago in C++ and currently am using them for analysis with my desktop version of Matlab. I don't have the code on Git repo. Want to know if its possible to use such custom developed libraries with Thingspeak.

I should mention here that I am not very familiar with capabilities of Thingspeak. Just beginning to explore the possibilities for using it.

Answer 1

[Vinod]

If you have the DLLs and MATLAB code calling those DLLs in a git repo, you could have your MATLAB Analysis on ThingSpeak clone the repo and execute the code in it.

I would recommend testing your code in MATLAB Online and before operationalizing it on ThingSpeak using a TimeControl or React.

[Hatim Motiwala]

Thanks for the tip, will try it out.

[Hatim Motiwala]

Cannot test my library (dll) on Matlab Online because what I have is a windows dll which works fine with Matlab installed on my Windows PC but Matlab Online runs on Linux so it requires a shared library .so file.

I am not familiar with Linux and have no idea how to compile my C code to create a .so file for Linux. Will have to research this.

[Vinod]

I interpreted your requirement as loading a dynamic loaded library (DLL), not a literal .dll file that is windows specific. To load a dynamic loaded library, you will need to compile it for your OS in which the application is executing in, in this case Linux.

[Hatim Motiwala]

Yes, I did not know that Matlab online runs on Linux till I got the error on loadlibrary() call :-)

Thanks for all your help, I will look into compiling my code on Linux.