MATLAB: Matlab Coder and saving variables to a file

matlab codersaving to a file

How can I dump of variables to a file using Matlab Coder? It complains that fopen can't be used for this (I don't want to do coder.extrinsic).

Also, somewhat related, is there a way to inject C code into an m-file such that when Coder tries to generate code it simply copies that C code over to the C file unprocessed?

Best Answer

You can use coder.ceval to call the C routine of FOPEN instead of the MATLAB implementation of FOPEN as this is not supported for code generation with MATLAB Coder.

There is a MATLAB Coder demo for reading from an external file which shows how to use this:

coderdemo_readfile

You can include custom code by adding with coder.config options, see:

http://www.mathworks.com/help/releases/R2011a/toolbox/coder/ug/brbpy6d-1.html#brbpy6d-3

Related Solutions

MATLAB: C files compilation using Matlab coder

If you are generating a MEX function with MATLAB Coder then you can call the MEX files extrisically:

http://www.mathworks.com/help/simulink/slref/coder.extrinsic.html

So, if the MEX function you are calling is "someMexFcn" you can use:

y = foo(x)
%#codegen
coder.extrinsic('someMexFcn');
% Use someMexFcn here

in your MATLAB code.

MATLAB: Is it possible to put C++ code on a .m for help MATLAB Coder to traduce

I think you need single quotes around your function name (sprintf), because the first argument to coder.ceval is the string containing the C-function that you want to call.

if isempty(coder.target)
  Texte=int2str(Variable);
else
  coder.ceval('sprintf',Texte,'"%d"',Variable);
end

This should generate a call to sprintf as you expect.

Best Answer

Related Solutions

MATLAB: C files compilation using Matlab coder

MATLAB: Is it possible to put C++ code on a .m for help MATLAB Coder to traduce

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