Serial port time stamping question.

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Adam
Adam 2011-7-7
回答： Leonard Classen 2019-3-27
It's been a while since I've worked with MATLAB, so bear with me.
A few timing questions:
1.) What is the best way to timestamp data coming in on a serial port?
2.) What does MATLAB use to timestamp the data? Does using NTP make a difference?
Thank you for the help!
-Adam

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采纳的回答

Adam
Adam 2011-8-9
Ended up timestamping with a NIDAQ box for high accuracy. MATLAB's not "real-time" enough.

更多回答（3 个）

Hydro9 Hisz
Hydro9 Hisz 2011-7-7
t=now; %serial time
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Adam
Adam 2011-7-7
That is time in a "serial" format. Does not answer my two questions. Where is "now" being pulled from?

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Hydro9 Hisz
Hydro9 Hisz 2011-7-7
the now function or clock function is pulled from the system clock. If you want elapsed time between measurements without influence from the system try using the tic/toc functions with each iteration
Leonard Classen
Leonard Classen 2019-3-27
Hi,
which NIDAQ box did you use?
best regards

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