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function serialData = PR655read
% serialData = PR655read
%
% Reads data chars from PR655 until there is nothing left. Returns an
% empty matrix if there is nothing to read.
%
% 01/16/09 tbc Adapted from PR650Toolbox for use with PR655
%
global g_serialPort;
% Look for any data on the serial port.
serialData = char(IOPort('read', g_serialPort));
% If data exists keep reading off the port until there's nothing left.
if ~isempty(serialData)
tmpData = 1;
while ~isempty(tmpData)
WaitSecs(0.050);
tmpData = char(IOPort('read', g_serialPort));
serialData = [serialData, tmpData]; %#ok<AGROW>
end
end
return
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