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function serialnumStr = PR650getserialnumber
% serialnumStr = PR650getserialnumber
%
% Get the serial number from the PR-650. Sometimes
% it's useful to be able to find out
% which of the instruments in the lab was
% used for any particular measurement.
%
% 2/13/10 dhb Wrote it, based on PR650getsyncfrequency.
global g_serialPort;
% Check for initialization
if isempty(g_serialPort)
error('Meter has not been initialized.');
end
% Initialize
timeout = 30;
% Flushing buffers.
% fprintf('Flush\n');
dumpStr = '0';
while ~isempty(dumpStr)
dumpStr = PR650serialread;
end
% Send command
IOPort('write', g_serialPort, ['d110' char(10)]);
% Get at least one character
waited = 0;
inStr = [];
while isempty(inStr) && (waited < timeout)
WaitSecs(1);
waited = waited + 1;
inStr = PR650serialread;
end
if waited == timeout
error('No response from meter');
end
% Pick up entire buffer.
readStr = inStr;
while ~isempty(inStr)
inStr = PR650serialread;
readStr = [readStr inStr];
end
% Parse return. This may contain
% training blanks.
serialnumStr = readStr(1:8);
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