Problem with traditional DAQ passage to DAQmx using NOR-6534

I'm moving the traditional following of DAQ code to DAQmx:

This code is used to send data to program a FPGA using a PCI OR-6534 DIO.  This code works like a charm, but when I try to write the equivalent code using DAQmx (in LV 8.6 as well) it does not work.  I don't get any errors, but the FPGA do not program.

The General procedure is as follows:

The value of all the lines on the Port exit 0

Set up the mode of transfer to low Active

Write the data in the buffer

Send the data using the internal clock of 10 MHz of the 6534 (6533 is no longer used, but the code was never updated)

Wait until the output is made

Disable the task

In DAQmx I configured as such:

Any ideas on what has changed in DAQmx or what I am doing wrong?

Looking at your code traditional DAQ once more, he is actually setting up handshaking vs just a straight sample clock.  The Config VI Mode with the "clock polarity" setting is not a sample generated at a certain rate clock, but instead, it's a protocol handshaking attack or the trailing edge.  TDAQ had much more flexibility with what DAQmx and some handshaking protocols are not transferable to DAQmx completely.

So when you say the configuration of your device in TDAQ bass Active transfer mode, I don't see what is happening in the code TDAQ.  It's really a negotiation protocol of unknown polarity (given that you use a control and I don't see the default value in the public Service).

You can try to determine which protocol handshake TDAQ you use first, then determine if there is an equivalent for DAQmx.  The three modes that cannot be transferred are level ACK, tip, or long pulse modes.  These have ACK leading REQ, which is not possible for DAQmx to manage.  You can read more in the user guide for the 6534 and starting on page 3 and 4 are the comparison of the different modes of handshake.

Then move forward options are do not migrate or to download a beta driver TDAQ, if you perform the migration for the purposes of the compatibility of the OS.

Hope this helps, let me know what other spawn of this.  Thank you.

Tags: NI Hardware

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