Disclosure:  I'm a hardware guy that can fake my way through embedded
programming (PIC's only) and some windows console programming but
dealing with the com ports is over my head even after reading the help
files.

I'm controlling a Data Acquisition Unit
(http://www.measurementcomputing.com/cbicatalog/cbiproduct_new.asp?dept_id=349&pf_id=1522)
by the computer via a USB connection. The control portions of the
program is already programmed by myself to run in C++ in a windows
console and is 100% complete and functioning.  The hardware connected to
the DAQ sends a continuous string of data back to the com port which I
can easily see useing hyperterminal. The data refresh rate on the com
port is slightly greater than one line per second and I cannot adjust
that.  My test needs to run for about 16 hours which would create
literally THOUSANDS of lines if I captured everything in hyperterminal.
Not a good option.

My program currently captures data from the DAQ once every 30 seconds
and sends the data to a CSV file.  My problem is that I would also like
to take the latest info from the com port and send that infomation to
the CSV file at the same 30 second capture event.  Anyone have any
sample code that I could modify?

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