MATLAB: Reading two voltages from arduino.

arduino fscanf

Hello, I'm trying to read two voltage using the fscanf function to read two voltages in arduino which display like the following using the arduino monitor serial I get: 1022.00,1022.00 1023.00,1022.00 1023.00,1022.00 etc.. Yet when I try to read the two values I use the following code: a=fscanf(s,'%d,%d'); v1(i)=a(1)*5/1024; % 5/1024 is a constant v2(i)=a(2)*5/1024; % 5/1024 is a constant
but for a(2) in the v2(i) line It mentions me that: ??? Attempted to access a(2); index out of bounds because numel(a)=1. giving me the Idea that a is only taking one of the two voltages, so I was wondering how to make the a take the two values?

Best Answer

Probably because you're asking it to read integers (%d), not floats (%f). Make that change.
Also, beware of MatLab's fscanf behaviour. If you only want to read one pair of numbers, you have to do:
fscanf(s, '%f,%f', 1);
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