return type of fgetl(serial)

Question

Safiullah Khan 2011-2-24

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https://ww2.mathworks.cn/matlabcentral/answers/1929-return-type-of-fgetl-serial

hi, i wanted to know the return data type(string, char ,array?) of fgetl(serial), because i need to read port through fgetl(serial).

http://www.mathworks.com/help/techdoc/ref/serial.fgetl.html

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Answer 1

Jan 2011-2-24

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https://ww2.mathworks.cn/matlabcentral/answers/1929-return-type-of-fgetl-serial#answer_2876

在 MATLAB Online 中打开

What about trying it?

x = fgetl(serial);
disp(class(x));

Looking in "doc serial/fgetl" it looks like it is a CHAR.

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Walter Roberson 2011-2-24

Possibly upon timeout or end-of-file it would return a different class of data such as the number -1 or an empty numeric array. You would need to test this case.

Jan 2011-2-24

I've read http://www.mathworks.com/help/techdoc/ref/serial.fgetl.html and find the description of the outputs too vague. "[tline,count,msg] = fgetl(obj)" is helpful to detect timeouts and errors, but what is "msg" in case of success exactly?

@Safiullah Khan: The documentation is not clear enough in this point. Please send an enhancement request to TMW.

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