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function readStr = PR650rawspd(timeout)
% readStr = PR650rawspd(timeout)
%
% Measure spd and return string.
global g_serialPort;
% Check for initialization
if isempty(g_serialPort)
error('Meter has not been initialized.');
end
% Flushing buffers.
% fprintf('Flush\n');
dumpStr = '0';
while ~isempty(dumpStr)
dumpStr = PR650serialread;
end
% Make measurement
% fprintf('Measure\n');
IOPort('write', g_serialPort, ['m0' char(10)]);
waited = 0;
inStr = [];
while isempty(inStr) && (waited < timeout)
WaitSecs(1);
waited = waited + 1;
inStr = PR650serialread;
end
if waited == timeout
error('No response after measure command');
end
% Get the data. In this first loop, we make
% sure something came back from the meter. If
% something did come back, we need to loop (below)
% to pick up the entire buffer, because some serial
% ports seem to be set up so that IOPort('Read',...)
% only reads to the EOL char.
% fprintf('Get data\n');
IOPort('write', g_serialPort, ['d5' char(10)]);
WaitSecs(0.1);
waited = 0;
inStr = [];
while isempty(inStr) && (waited < timeout)
inStr = PR650serialread;
WaitSecs(1);
waited = waited+1;
end
if waited == timeout
error('Unable to get reading from radiometer');
else
% Pick up entire buffer. This is the loop referred to above.
readStr = inStr;
while ~isempty(inStr)
inStr = PR650serialread;
readStr = [readStr inStr];
end
end
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