Matlab - define delay time in a for cylce in matlab

   
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define delay time in a for cylce in matlab

Publicado por Gabriel gabrielo_9103@hotmail.com (1 intervención) el 07/04/2013 21:20:28
Hi, I need to do matlab data acquisition, but I need control the rate and amount of data stored in a vector. I made a "for cycle", but I need that the cycle takes place each unit time defined, up to the total acquisition time. I mean, if t=1, I need 500 samples stored in a second, one each 0.002ms. How I can do that?. Thanks!

clc
t=1;
v1=zeros(1,500*t);
delete(instrfind({'Port'},{'COM3'}))
s = serial('COM3');
set(s,'BaudRate',9600);
s.inputbufferSize = 10000;

delay= wait time = frecuency of data
fopen(s);

for i=1:t*500;

a=fscanf(s,'%d');
v1(i)=a
i=i+1;
wait time
end
fclose(s);
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define delay time in a for cylce in matlab

Publicado por Dave correa.dave30@gmail.com (934 intervenciones) el 09/04/2013 17:14:40
Hi Gabriel;

You should include the function "pause" in you For loop.

For example:

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for ...
...
...
pause (0.1)
% This represents a 0.1-second pause.
end


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I hope this is of some help.

regards

Dave Correa
correa.dave30@gmail.com
Matlab Programming Services
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