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Start Stop Triggering with DAQ assistant

Hi ..

I have written a small application to acquire samples between a start and stop triger and save it to a file continuosly until user hits the stop button.

Idea was to log 2 seconds of data every 100s. Hence I connected a periodic square signal which stays on for 2 sec on off for remaining 98 seconds. Application has to log data when the trigger signal is high.

Hence I set the total number of samples to 100000(since I acquiring data at 50kHz) and the number of pretrigger samples to 99998(I want to collect signals when the trigger is high).

I have set PFI0 to be both the start and stop signal and wired my trigger signal accordingly to PFI0.

I have noticed a funny behaviour though.

I am only able to collect the samples on the first trigger and my subsequents triggers are ignored. I know this this because I check the size of the file written and also opened up the lvm file to see what was written.

I have attached the vi which I had used to do this.

Am I missing anything?
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I think I missed out the attachment. Here it is.
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