Signal flow chart for using DIO on 5640R

Hi,
There are a bunch of good templates to get me started with analog I/O but not for digital I/O. My project needs the host to send out a value through digital lines @10MHz. Now I have a few basic questions regarding the standard procedures to work with DIO?
1. what are the essential items in the signal flow chart on host? Open session->configuration->write->initialization->close session?
2. What are the differences of opening a session using FPGA VI Reference.vi and 5640 init Generation Session.vi? They are not interchangable.
3. Do I have to use a FIFO to transfer data between FPGA and host in this case?
At last, I highly recommend ni group to create a working template for DIO. If easy modification to analog I/O template can work for DIO, please show to how, that'll be great.
Thank you.
Dan

Hi Dan,
The basic flow of programming on the Host for digital output would be similar to:
Open FPGA Reference >> Configuration (as needed) >> Write to FPGA >> Close session
You could use a FIFO to pass data between the host and the FPGA or you could just pass data via controls and indicators. I have included an example project which passes data from the host to a control on the FPGA VI. If you are transferring the data as a 32-bit unsigned integer then you will need to manually format and control the way it is output from the FPGA VI. There is not a pre-made function to do that.
As for testing, you can manually probe the pins on a connector with a DMM. Here is the pinout for the AUX connector.
Regards,
Barron
Barron
Applications Engineering
National Instruments
Attachments:
ni5640R Digital Output Example.zip ‏282 KB

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Signal flow chart for using DIO on 5640R

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