Reading quad encoder with 9870

[Hafis]

Hi there, my project involves using a quadrature encoder to sense the position and degrees of two encoders.

I have successfully modified the example vi from http://zone.ni.com/devzone/cda/tut/p/id/3921 using NI 9411.

However, I would like to know how I can read this data from the 9411 module into the NI 9870.

I have read examples of DMA from https://forums.ni.com/t5/Example-Code/Use-DMA-FIFOs-to-send-data-to-and-from-an-FPGA-target/ta-p/352... but I do not clearly understand how it works.

How can I implement the FPGA file that I have achieved using NI 9411 to NI 9870 without serial connection.

Thank you

[Souhe]

Hello,

Thank you for the information you provided about your project.

To make sure I understand correctly:
Are you looking to transfer the encoder data from the NI 9411 module to the NI 9870 FPGA by implementing DMA FIFO within your FPGA code, so that the data can be read efficiently without using a serial connection?

Please let me know if this is your intended approach or if you are considering other options.

[UliB]

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@Souhe wrote:

Hello,

Thank you for the information you provided about your project.

To make sure I understand correctly:
Are you looking to transfer the encoder data from the NI 9411 module to the NI 9870 FPGA by implementing DMA FIFO within your FPGA code, so that the data can be read efficiently without using a serial connection?

Please let me know if this is your intended approach or if you are considering other options.

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Hi,

this question was asked more than 14 years ago and was just edited by 'Content Cleaner' a few days ago.

I don't know if you'll get a reaction from OP.