using Xilinx design tools. Place and route the design with ILA cores. Download bit-stream on to FPGA and analyze the signals using chipscope. Xilinx ChipScope ICON/VIO/ILA Tutorial. The Xilinx ChipScope tools package has several modules that you can add to your Verilog design to. If you are new to FPGAs, one aspect of the development flow you may not have considered is how you will go about debugging your design.
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ChipScope will begin downloading the. Make sure the top-level module labkit is selected in the source tree, and double-click on “Generate Programming File in the processes window, to compile the design.
And one further problem is that, inevitability, the logic analyzer you are using will also be required by one or more other project teams, which means you all have to agree on how you will allocate the analyzer resources. Type eight zeros, and then return. Having configured the target device, you can then connect to the target over JTAG using the ChipScope Analyzer tool and trigger on the waveform of interest as illustrated in the screenshot below.
Name the new bus count. A dialog box will appear that lets you create the necessary hardware modules for your FPGA. This allows you to have different groups to choose from when you do your triggering at run-time.
For example, while your design is running on the FPGA, you can trigger when certain events take place and view any of your design’s internal signals. The sample memory of the analyzer is limited chipsscope the memory resources of the FPGA.
Using ChipScope ILA
If your design had multiple up to 15 ILA modules, each would be connected to a different control port on the ICON, using a unique bit control bus. Choose for data depth.
This means that you may have to keep on rebuilding your design to access the signals of interest and route them out to the test header. Afterwards, you instantiate these cores in your Verilog code, and you connect those modules to the signals you want to monitor. Start Project Navigator, and open the counter project.
If you are new to FPGAs, one chlpscope of the development flow you may not have considered is how you will go about debugging your design once it has been loaded into the FPGA. When the download completes, the LEDs on the labkit should start counting.
Select the “Data same as Trigger” box, which allows you to view all the signals of interest, as well as to potentially chipscop on all of them. Generally, ChipScope sampling rate will be the same as the design’s clock frequency. You can have multiple ILA blocks for separate parts of your design.
Debugging with ChipScope ( labkit)
The waveform window will display the captured waveforms. Sadly, however, in many cases they do not remove the need to rebuild the code.
In your project directory, you should now have a number of chipscppe files icon. The trig0 port on the ILA should be connected to the signals that you wish to probe with the ChipScope analyzer. In order to use the ChipScope internal logic analyzer in an existing design project, you first generate the ChipScope core modules, which perform the trigger and waveform capturing functionality on the FPGA. This is the window length for your ILA. Leave all other settings at their default values and click “Next”.
One of the tools we would have employed would be a logic analyzer. The black-box definitions will look like this module icon control0 ; output [ Set the output netlist field so that the ICON core is generated in the counter project directory, Make sure the output netlist name ends with. During the “Translate” portion of the design compilation process, the.
The big downside with il approach comes in designs that are already utilizing most of the devices programmable resources, because this will limit any logic chipscop implementations.
ChipScope Analyzer also provides the interface for hcipscope the trigger criteria for the ChipScope cores, and for displaying the waveforms recorded by those cores. Logic analyzers are, of course, still employed today. An ILA is a logic analyzer block which can trigger on internal signals and capture them inside a memory so that they can be viewed through the analyzer GUI. For example if your Trigger Width is 20, change it to Select core type to generate: Change the trigger width to a number that, when divided by eight, does not leave a remainder of 1, 2, 3, or 4.