Repeat outputs with analogoutput without requiering to use putdata repetadly
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Hi all!
I've got my analogoutput channel working as I want. When it receives a digital trigger on line PFI1 it starts the function that I loaded.
ao_Ref = analogoutput('nidaq','Dev1');
addchannel(ao_Ref, [1]);
set(ao_Ref,'TriggerType','HwDigital')
set(ao_Ref,'HwDigitalTriggerSource','PFI1');
putdata(ao_Ref, xt);
start(ao_Ref)
However once its started (and finished) the "buffer" on the nidaq card is empty. Triggering again doesn't do anything. Currently, I need to reload the data on the card by repeating the whole code.
Surely there is a much more efficient way to make it output the same data every time the trigger is activated.
Thanks,
Michael
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Walter Roberson
il 22 Set 2011
No there isn't, not unless your hardware supports storing a buffer of data and sending the buffer on request. Which some hardware does, but most does not.
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Walter Roberson
il 26 Set 2011
I would need to research that; I am not familiar with how to program those devices, such as to construct the waveform buffer.
Which model device are you using?
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