david,
this is where serial communications gets fun! you will have to do the
repeated reads as kevin suggested and reassemble the data stream from
that. you then have to figure out how your data stream is packaged.
usually most machines have some sort of header and footer character to
show you where a data set is and some sort of delimiter if its spewing
several channels of data.
if you dont need every data point, then i usually just read every so
often for a chunk of data thats big enough (usually 2x one data set) and
disect out one data set for use.
serial stuff is a bit of trial and error, but its really great once you
get things talking to each other!
cheers,
jeff
[EMAIL PROTECTED] wrote on 9/4/00 7:09 PM
>Just curiosity, and it might well be a dumb question.
>
>Say you had physiological equipment attached to the serial port. The data
>would presumably be available according to the sampling rate of the
>equipment. How would you know when and how often to 'read'? Little
>hardware
>knowledge, so no acronyms or big words in any answer forthcoming please.
>
>Best wishes
>
>David G
Jeffrey H. Reynolds, Ph.D.
Waveforms
5236 Locksley Ave.
Oakland, CA 94618
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