How can I access to output buffer

[pho_no]

Hello

I've got the following problem:
My application does simultaneous analogue input and output.
I'm reading Data from a file (example: 30000 values for 30 seconds with 1000 Hz)and send it with AO-Start/AO-Write to my Output. At the same time I'm reading the response. Now I want to create a control loop but I don't know how to access to/rewrite my output-buffer-array.
Is there any possibility to "update" my outputbuffer at the same time when AO-Write is sending it to the output?

Thank you

[Ingo_Schumacher]

Surely there is a way.
You have to disable the buffer regeneration option and continuously write new data to your output buffer. Actually it works exacly like a double buffered analog input operation - just the other way round.

If you are using daqmx, have a look at the example "Cont Gen Voltage Wfm-Int Clk-Non Regeneration.vi" which should have been installed by the driver. The traditional API is shipped with an example called "continuous generation.vi" to show the concept.