The 'timer' class does not support code generation.

Question

Pranav Mathur 2019-2-25

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/446842-the-timer-class-does-not-support-code-generation

回答： Walter Roberson 2019-2-25

I am trying to execute this code and the error- 'The 'timer' class does not support code generation' is cropping up along with these errors:

Undefined function or variable 'start'
Function 'delete' is not supported for code generation

function y = fcn(v1, v2, v3, v4)
ar=[v1,v2,v3,v4];
%step1
[~,I]=max(ar);
y=I;
t = timer('TimerFcn', 'disp(''wait'')','StartDelay',15);
start t;
delete t;
%step2
y = 1;
t = timer('TimerFcn', 'disp(''wait'')','StartDelay',15);
start t;
delete t;
%step3
[~,I1]=min(ar);
y=I1;
t = timer('TimerFcn', 'disp(''wait'')','StartDelay',15);
start t;
delete t;

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Answer 1

Walter Roberson 2019-2-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/446842-the-timer-class-does-not-support-code-generation#answer_362615

Correct, code generation is not supported for timers. timers do not exist in the C language, and do not exist in the form you want in POSIX.1 either (because C has no interrupts.)

Some people have put together timer services for C++; see example here