ROT button DE FPGA

[Mina_P]

Hi everyone,

I am using LabVIEW FPGA board. I tried to use rotary button on the board but I can't find the ROT CENTER (or ROT A, ROT B) in the New FPGA I/O. Please help me indicate the problem.

Thank you so much

Mina

[Tim_W.]

Hi Mina,

What versions of LabVIEW and the Digital Electronics FPGA Board Driver are you using? If possible can you provide screenshots of your project and the New FPGA I/O window?

Tim W.

Applications Engineering

National Instruments

http://www.ni.com/support 

[Mina_P]

Thank you so much because of cosidering,

I am using NI Digital Electronics FPGA Board follow the link below and LabVIEW 2010

http://zone.ni.com/devzone/cda/pub/p/id/763

Morever I attached the screenshot New FPGA I/O, I didn't see the ROT appear 

Please help me solve this problem

Thank you so much

[Tim_W.]

First, make sure you've got the specific driver for that board. If you're trying to get  this example up and running (since it refers to ROT A, B and Center) I can see that it was written for a slightly different board (the Digilent S3E Board) that has direct I/O for channels named ROT_A, B, and Center for a built-in encoder knob. For the NI Digital Electronics FPGA Board there are a couple things to know. First, the rotary knob on the board itself is not an encoder as described on page 2-11 of the user's manual. Rather, it is a control for a clock output and is not connected to the FPGA at all. There is a hardware add-on module from Digilent called the PmodENC Rotary Encoder Module that can plug in to the PMOD port on the NI board. If this device is plugged in to PMOD1 (aka J1 in the project) you can access its I/O lines in your project by going to New>>FPGA I/O>>Pmod Connectors>>J1:1-4 or J1:7-10. Once you've added these to the project you can rename them to anything you like, such as ROT_A or ROT_B.

Tim W.

Applications Engineering

National Instruments

http://www.ni.com/support 

[Mina_P]

Hi Tim W,

Frankly I tried to follow this example. Now I understand this problem. Thank you so much for your help

Mina