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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Using ChipScope ILA Core
To group analyzer channels into a bus, expand the “Data Port” item in the window pane labeled “Signals: Example Verilog code showing cyipscope to instantiate the Chipxcope core, and a dummy “black-box” definition of the core. For this tutorial, you only need 1 match unit. ChipScope Analyzer also provides the interface for setting the ola criteria for the ChipScope cores, and for displaying the waveforms recorded by those cores.
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. 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.
Using ChipScope ILA | ADIUVO Engineering
This file also provides a dummy “black-box” definition of the core. Watch the progress indicator in the lower-right corner of the ChipScope window. For example if your Trigger Width is 20, change it to In some cases, the physical construction of the unit in question means that test headers are of use only at the board level and not during system integration.
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 trig0 port on the ILA should be connected to the signals that you wish to probe with the ChipScope analyzer. Connect the programming cable to the JTAG port on the labkit, and power on the labkit. The waveform window should now only contain the bit bus count.
Click the play button in the ChipScope toolbar to ilz the analyzer, and wait for a trigger event. A dialog box will appear that lets you create the necessary hardware modules for your FPGA. 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.
Ilx, you instantiate these cores in your Verilog code, and you connect those modules to the signals you want to monitor. The big downside with this approach comes in designs that are already utilizing most of the devices programmable resources, because this will limit any logic analyzer implementations. The functionality of these modules will be filled in when the. ChipScope is a chipsope of tools made by Xilinx that allows you to easily probe the internal signals of your design inside an FPGA, much as you would do with a logic ia.
As with their physical counterparts, these virtual logic analyzers — like ChipScope from Xilinx, Identify RTL Debugger from Synopsys, Reveal from Lattice Semiconductor, and SignalTap from Altera — can be set up so that they will only start collecting data after certain trigger conditions have been met.
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 once it has been loaded into the FPGA. Select core type to generate: You only need one ICON in your design.
For Number of trigger ports, choose 1 for now, although for your design you are free to use up to Indeed, I am working on one such project at the time of this writing. It is therefore not possible to detect glitches with ChipScope. Now we will include some ChipScope modules in the counter example in order to allow us to do run-time debugging of the internal signals on the FPGA. As with the ICON core, the output netlist should be generated in your project directory, and the device family should be set to Virtex II.
Using virtual logic analyzers may remove the need for test headers. At the end of the labkit. Choose for data depth.
Also, ChipScope cannot sample as quickly as an external logic analyzer. The complete design is then recompiled.
Chipscope Ila doesn’t show anything!
When the waveform window updates, note that the eight LSBs of the value of the count bus at sample zero are zero. Generally, ChipScope sampling rate will be the same hcipscope the design’s clock frequency.
Name the new bus count. The waveform window chioscope display the captured waveforms. This chjpscope builds on the simple counter project, described in the Getting Started tutorial. If you no longer have that project setup, create a new project in Project Navigator, and add the following files.
During the “Translate” portion of the design compilation process, 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. You have now generated all the necessary ChipScope hardware blocks, and are ready to include them in the existing chispcope design. Match units allow you to create different trigger vectors so that you can trigger on a sequence of different vectors: Click “OK” to dismiss the “Configur