query and read the status from Com port

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KANG
KANG on 29 May 2015
Commented: Ajit Singh on 2 Nov 2020
Hi all!
I am working at the com port in order to control the optical shutter (SC10; Thorlabs) using MATLAB. While I could control it, I am looking for the way to read the optical shutter status (open or closed). There is a command 'closed?' to do this but MATLAB does not return the correct value. My code is like,,
s=serial('COM1');
s.Terminator='CR';
fopen(s);
fprintf(s,'ens');
fprintf(s,'closed?');
Ret=fscanf(s)
It would be greatly appreciated if I could get any input!
Thanks,
Kang
  1 Comment
Ajit Singh
Ajit Singh on 2 Nov 2020
Dear Sir,
Could you provide the MatLab script to operate the shutter: opens for 200 mili second in every 10 seconds for 3 times.
Thank you.
Regards

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Answers (2)

Dasharath Gulvady
Dasharath Gulvady on 29 May 2015
You have two "fprintf" calls in the code and one "fscanf". The "fscanf" will return the result of "ens". For "closed?" execute "fscanf" one more time.
  1 Comment
Ajit Singh
Ajit Singh on 2 Nov 2020
Dear Sir,
Could you provide the MatLab script to operate the shutter: opens for 200 mili second in every 10 seconds for 3 times.
Thank you.
Regards

Sign in to comment.


KANG
KANG on 3 Apr 2018
Sorry for the late, but thanks a lot for your feedback!

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