function PR650close
% PR650close
%
% Close serial port used to talk to colorimeter.  Reset
% serial global.
%
% 4/4/00  dhb, jdt  Added protection against multiple closes.
% 21502   dhb       Change name.

global infoC

if (~isempty(infoC))
   PsychSerial('Close',infoC);
   infoC = [];
end
