Can older 32-bit mex files be run as S-functions in 64-bit Simulink?

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Andy le 31 Mai 2016
Commenté : Abdul Rehman le 6 Oct 2020
I think I know the answer, but I can't find it clearly stated in a forum, and the diagnostic is, "S-Function ' mexw32_file_name' does not exist". The mex file was created with R2012a, and I am running 64-bit R2015a. The source model to rebuild the mex files is not readily available. Thanks.

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Walter Roberson
Walter Roberson le 31 Mai 2016
No, that is not possible. It is not possible for 64 bit Windows applications to call 32 bit Windows routines. The closest you could get would be to use TCP (or similar, perhaps shared memory) to have two different programs running and communicating with each other.
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Walter Roberson
Walter Roberson le 6 Oct 2020
Yes that can be done using tcp or similar communications methods. memory mapped files perhaps.
You just might possibly be able to use the MATLAB Automation interface, but I am not at all sure that works between 32/64 bits and would tend to suspect that it would fail.
Abdul Rehman
Abdul Rehman le 6 Oct 2020
Thank you. But it wont be possible to apply the same concept in Simulink I suppose where 2 Simulinks run side by side, one is 32 bit and the other is 64 Bit and their signals communicate in real time and synchronized? I hope the following picture gives a better idea.

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