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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This is a known bug in ChipScope 6. The sample memory of the analyzer is limited by the memory resources of the FPGA. At the end of the labkit.
Under Trig0, choose a trigger width of It is therefore not possible to detect glitches with ChipScope. You have now generated all the necessary ChipScope hardware blocks, and are ready to include them in the existing counter design. 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 illa met.
An ILA is a logic analyzer block which can trigger on internal cnipscope and capture them inside a memory so that they can be ilaa through the analyzer GUI. Make sure Virtex II is selected as the device family.
Debugging with ChipScope ( labkit)
Then we would run the system and try to work out what the heck was happening. 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.
Under clock settings, choose to sample on the rising chipsckpe of the clock. When the waveform window updates, note that the eight LSBs of the value of chipscops count bus at sample zero are zero.
You can have multiple ILA blocks for separate parts of your design. Connect the programming cable to the JTAG port on the labkit, and power on the labkit.
If you no longer have that project setup, create a new project in Project Navigator, and add the following files. 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. For this tutorial, you will need two different types of modules: ChipScope Analyzer also provides the interface for setting the trigger criteria for the ChipScope cores, and for displaying the waveforms recorded by those cores.
One of the tools we would have employed would be a logic analyzer. Indeed, I am working on ola such project at the time of this writing. In the Trigger Setup window, highlight the last eight “X”s of the value field.
This is the window length for your ILA. ChipScope will begin downloading the.
And one further problem is that, inevitability, the logic analyzer you are using will also be iila by one or more other project teams, which means you all have to agree on how you will allocate the analyzer resources. Now, let’s change the trigger setup to trigger when the lower eight bits of the count bus are all zero.
Chipscope Ila doesn’t show anything!
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 chipsco;e. One big advantage of these in-chip logic analyzers is that they offer the ability to capture the values on wide internal busses and store these values in internal RAM. Example Verilog code showing how to instantiate the ILA core, and a dummy “black-box” definition of the core.
For this tutorial, you only need 1 match unit. 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 chipsxope waveform capturing functionality on the FPGA. To group analyzer channels into a bus, expand the “Data Port” item in the window pane labeled “Signals: The functionality of these modules will be filled in when the.
Afterwards, you instantiate these cores in your Verilog code, and you connect those modules to the signals you want to monitor. Setting up the Initial Design This tutorial builds on the simple counter project, described in the Getting Started tutorial. Sadly, however, in many cases they do not remove the need to rebuild the code. For Number of trigger ports, choose 1 for now, although for your design chipsccope are free to use up to This file also provides a dummy “black-box” definition of the core.
Chipscope Ila doesn’t show anything! – Q&A – FPGA Reference Designs – EngineerZone
Select core type to generate: Logic analyzers are, of course, still employed today. Click “OK” to dismiss the “Configur This is where you will connect the signals you wish to analyze. 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. 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.
Leave all other settings at their default values and click “Next”.