Call a C function from Matlab

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Sebastian Linn
Sebastian Linn 2020-3-3
回答： Pankhuri Kasliwal 2020-8-20
Hello,
I am trying to call a C function form Matlab. The files are in different folders. How can I achieve that? I am using Matlab R2018b.
The C file is called main.c and its funtion to be called is int main(void). I tried something like this:
% callmain.m
function y = callmain() %#codegen
y = 0;
coder.cinclude('main.h');
y = coder.ceval('main');
end
With the following code I tried to specifiy the location of the files:
cfg = coder.config('lib');
cfg.CustomInclude = [fullfile(pwd,'Inc') ' ' fullfile(pwd,'Src')];
cfg.CustomSource = fullfile(pwd,'Src','main.c');
This line of code is supposed to generate the code:
codegen -config cfg callmain.m
The complete C code can be obtained from the following link:
https://drive.google.com/file/d/1KSbFGAX_3aSKNzmp-wMfU5gSInlCdQze/view?usp=sharing
I would appreciate your help!
Thanks
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Prasanna Gude
Prasanna Gude 2020-3-11
'TIM_HandleTypeDef' is there in the third party library "stm32f4xx_hal.h". Did you build that library? If not build that library and after that try building 'mex'.
Sebastian Linn
Sebastian Linn 2020-3-12
No, I did not. How do I build that library? Do you mean creating code by specifying the output to lib?

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回答（1 个）

Pankhuri Kasliwal
Pankhuri Kasliwal 2020-8-20
Yoou can see the following documentation Link. You need to follow the steps over there to call external C function into MATLAB.
  • If you are calling a C Library function then you need to additionally generate the MEX function. You can find a detailed documentation over here.

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