PXI Trigger with DAQmxCfgDigEdgeStartTrig fails

[Sebastien Dupere]

Alright here is another question from the novice:

First what I want to do:

1) Get Timestamps from a PXI-6682

2) Synchronize those time stamps with Analog inputs

Now here is what I did so far:

NI-Sync:

1) Create a clock that generate 1 rising edge per second on NISYNC_VAL_PXITRIG0

2) Link that clock to create timestamps on rising edges

NI-Daqmx:

1) Create Task

2) Create a channel

3) Link channel start trigger to "PXITrign" <--fails...weird that I shouldn't use NISYNC_VAL_PXITRIG0 =  

"PXI_Trig0"

Now I need to do this because I want to have a timestamp exactly when I start fetching samples.....because my preliminary tests created abuffer overflow because my timestamp was never available (so every time I got samples I would wait 1 second before getting them)

What am I doing wrong?

[CharlesD]

It sounds like to me you are looking to get time stamps from the 6682 of all of the analog input samples.  In my opinion  a good starting point might be the following community example that combines a DAQ task with an NI-Sync timestamping task. 

http://decibel.ni.com/content/docs/DOC-3362

I found the link above from going to NI.com/community and searching for: DAQmx time stamp

Let me know if you have any other questions.. 

[Sebastien Dupere · Accepted solution]

First of all thank you for your reply.

Yes I did stumble on this piece of information, although sadly I do not use LabView but C++...

Furthermore,

I solved my compiling issue by using NISYNC_VAL_PXITRIG0  afterall (Seems the name was a bit misexplained in the Daqmx library

But now I got more issues popping up, but those are on other threads.

So I guess I will close this one and let my other threads give me more answers 🙂

Thank you though,

Seb