ni-6541 hsdio

[htram]

I am trying to use the NI-6541 for two purpose.  1. use 5 I/O to generate waveforms, 2. use 4 I/O pins as SPI interface.

I am currently reading a text file and using the script function to generate my waveform.  Is it possible that while the script in running a pattern on I/O 0 to 5 and use other pins to generate SPI commands, ie .I/O 6 to 9?

I would like the pattern to run continuously while generating SPI comands.  If it's not possible with Scripts, is there a better method?

Thanks

[AlexSummer]

I hope you've seen the following tutorial. Its very useful: http://zone.ni.com/devzone/cda/epd/p/id/6200

I've used it (along with the SPI reference library) to build a SPI control VI using the NI-6541.

I don't know about having a continuous waveform on other lines at the same time.

[htram]

Thanks for the link.  I am currently using the NI-845x (usb to SPI) to generate SPI communication and wanted to see if I can take advantage of the extra I/O's on the NI-6541 to consolidate the functions.   This will be quite helpful if I can perform both tasks simultaneously.

[Ryan_M]

htram,

There is only one dynamic generation engine per device.  However, if you implement SPI using static reads and writes, you can definitely have it run in parallel with your scripted generation.  You just have to make sure you manage your channel lists and static masks correctly.

[lab_boy]

Hi

For more information on the LabVIEW API for Static DIO can be found here page 247.

Good luck 🙂

-Lab

[htram]

Thanks for the feedback Ryan.  I will check that out.