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getAvailableComPort.m
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getAvailableComPort.m
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function lCOM_Port = getAvailableComPort()
% function lCOM_Port = getAvailableComPort()
% Return a Cell Array of COM port names available on your computer
try
s=serial('IMPOSSIBLE_NAME_ON_PORT');fopen(s);
catch
lErrMsg = lasterr;
end
%Start of the COM available port
lIndex1 = findstr(lErrMsg,'COM');
%End of COM available port
lIndex2 = findstr(lErrMsg,'Use')-3;
lComStr = lErrMsg(lIndex1:lIndex2);
%Parse the resulting string
lIndexDot = findstr(lComStr,',');
% If no Port are available
if isempty(lIndex1)
lCOM_Port{1}='';
return;
end
% If only one Port is available
if isempty(lIndexDot)
lCOM_Port{1}=lComStr;
return;
end
lCOM_Port{1} = lComStr(1:lIndexDot(1)-1);
for i=1:numel(lIndexDot)+1
% First One
if (i==1)
lCOM_Port{1,1} = lComStr(1:lIndexDot(i)-1);
% Last One
elseif (i==numel(lIndexDot)+1)
lCOM_Port{i,1} = lComStr(lIndexDot(i-1)+2:end);
% Others
else
lCOM_Port{i,1} = lComStr(lIndexDot(i-1)+2:lIndexDot(i)-1);
end
end