Use Labview Timestamp in C++

[GraOOu]

Hi,

I have to synchronize two softwares at 20 ms of accuracy, the first one use labview timestamp ( 128bits, 1904 ect ... ) and cannot be modified.

and the second is written in C++ using DAQmx, i have find the trick consisting in substracting the number of seconds of a classical struct tm.

But it is not accurate enough for me.

The only solution i found, is to use SYSTEMTIME Structure and use the same trick than the struct tm.

But, I don't find this very nice, So is it possible to use the same routine as labview in a classical C++ program ( or classical cvi program ) ?

Thanks in advance !

Eric

[Wolfgang]

Hi Eric,

LabWindows/CVI is not a C++ compiler, so might better post your question in the Measurement Studio for VC++ forum which you can find here

[GraOOu]

Thanks for the answer. I have made a mistake in the tittle.

But if a solution works on LabWindows/CVI, i will be able to port it in C++. ( i have the same problem in LabWindows / CVI too )

😉

[nickb · Accepted solution]

Hey Eric -

I'm not sure if you're still working on this, but I thought I'd mention the CVI absolute time API in the utility library.  It uses the National Instruments Binary Time Format, which I think is what LabVIEW should be using, and should meet your needs.

NickB

National Instruments

[GraOOu]

Hi nickb,

Like you, i am always working for customer's satisfaction

Thanks a lot for the answer !

Problem is solved.