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1. Simplify the control logic by adding a state machine. The improvements are on code readability and reliability. 2.Add a flush feature which can be used to clean the data from the DMA fifo. This is useful when the DMA is programmed in cyclic mode and data transmission is stopped by dma_transfer_suspend flag The software intervention is reduced at setting the flag(dma_flush_en). Flushing can also be done when activating the raw value with dma_flush_en active. 3. Add raw value support. Through this changes a user can set the dac output to a fixed predefined value in the following two cases: 1. direct, without using the dma. 2. with dma, as a hold value. The fixed value will be kipped after a cyclic buffer is stopped by axi_dac_interpolate, through dma_transfer_suspend register/signal. The raw value ca be set and transmitted independently on each channel. The predefined value is stored in reg 0x19(0x64). For more details se the documentation available at https://wiki.analog.com/resources/fpga/docs/axi_dac_interpolate |
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README.md
HDL Reference Designs
Analog Devices Inc. HDL libraries and projects for various reference design and prototyping systems. This repository contains HDL code (Verilog or VHDL) and the required Tcl scripts to create and build a specific FPGA example design using Xilinx and/or Intel tool chain.
Support
The HDL is provided "AS IS", support is only provided on EngineerZone.
If you feel you can not, or do not want to ask questions on EngineerZone, you should not use or look at the HDL found in this repository. Just like you have the freedom and rights to use this software in your products (with the obligations found in individual licenses) and get support on EngineerZone, you have the freedom and rights not to use this software and get datasheet level support from traditional ADI contacts that you may have.
There is no free replacement for consulting services. If you have questions that are best handed one-on-one engagement, and are time sensitive, consider hiring a consultant. If you want to find a consultant who is familiar with the HDL found in this repository - ask on EngineerZone.
Getting started
This repository supports reference designs for different Analog Devices boards based on Intel and Xilinx FPGA development boards or standalone.
Building documentation
Install the documentation tools.
(cd docs ; pip install -r requirements.txt)
Build the libraries (recommended).
(cd library ; make)
Build the documentation with Sphinx.
(cd docs ; make html)
The generated documentation will be available at docs/_build/html.
Prerequisites
or
Please make sure that you have the required tool version.
How to build a project
For building a project (generate a bitstream), you have to use the GNU Make tool. If you're a Windows user please checkout this page, to see how you can install this tool.
To build a project, checkout the latest release, after that just cd to the project that you want to build and run make:
cd projects/fmcomms2/zc706
make
A more comprehensive build guide can be found under the following link: https://wiki.analog.com/resources/fpga/docs/build
Software
In general all the projects have no-OS (baremetal) and a Linux support. See no-OS or Linux for more information.
Which branch should I use?
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If you want to use the most stable code base, always use the latest release branch.
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If you want to use the greatest and latest, check out the master branch.
Use already built files
You can download already built files and use them as they are. They are available on this link.
The files are built from master branch whenever there are new commits in HDL or Linux repositories.
⚠️ Pay attention when using already built files, since they are not tested in HW!
License
In this HDL repository, there are many different and unique modules, consisting of various HDL (Verilog or VHDL) components. The individual modules are developed independently, and may be accompanied by separate and unique license terms.
The user should read each of these license terms, and understand the freedoms and responsibilities that he or she has by using this source/core.
See LICENSE for more details. The separate license files cab be found here:
Comprehensive user guide
See HDL User Guide for a more detailed guide.