You are trying to read data that are not available yet. Try with fscanf.
fread doesn't work
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Hi, I tried to use fread with the little script in the 'help fread' in matlab, using my active COM but I get an error!
s = serial('COM3');
fopen(s);
fprintf(s, 'Curve?');
data = fread(s, 512);
The error is:
Warning: Unsuccessful read: The specified amount of data was not returned within the Timeout period.
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