Matlab Arduino Hand Shake

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Zack Bayhan
Zack Bayhan 2014-11-8
Hello everyone, I'm trying to get my arduino up and running so that I can use matlab to control it. I followed the instructions in the following video,
https://www.youtube.com/watch?v=ymWXCPenNM4
I mistakenly entered the wrong port, and as expected an error appeared stating that I had to pick from com1 or com4, the arduino is set up on com4 so I changed the variable and ran the script again. This time I get an error that only com1 was available. I typed instrfind into the command window and found that com port 4 is closed. How do I go about turning it on? Thanks Zack
function [S, flag] = ArduinoHandShake(comPort)
% Initialize the serial port communication between matlab and Arduino
flag=1;
s=serial(comPort);
set(s, 'DataBits',8);
set(s, 'StopBits',1);
set(s, 'BaudRate', 9600);
set(s, 'Parity', 'none');
fopen(s);
a='b';
while (a~='a')
a=fread(s,1,'uchar');
end
if (a=='a')
disp('serial read');
end
fprintf(s,'%c','a');
mbox=msgbox('serial communication setp.'); uiwait(mbox);
fscanf(s,'%u');
end

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