arduino+labview analog read triggered

[marza]

Hi everybody,

I'm a new entry in this world.

I've to aquire and graph an analog signal from arduino duemilanove using LabView. The start of the acquisition have to begin using a trigger. At the end of the acquisition the signal have to be save.

I know that for many people this project could be very simply but I'd like someone help me.

This is the initial project.

[Nathan_B.]

So, what is your question?  What kind of trigger are you using?  What kind of time resolution do you need for the signal?

FYI, Arduino is a slave device to LabVIEW and therefore you can't technically trigger LabVIEW from Arduino.  Also, if you need a high time resolution,  you would need to utilize the continuous analog sampling VIs.

[hrh1818]

LIFA does not have true trigger capability.  But you could poll a digital pin and when it changes state start collecting analog dfata.  You haven't defie what you mean by end of acquisiition.  However, when collecting data save the data in an an array and at "end of acqusition" write the array to a disk file.

hrh1818