Re: [myhdl-list] Testbench Template

[Christopher F. <chr...@gm...>]

On 7/31/12 10:50 PM, Christopher Felton wrote:
> I have been using a simple testbench template
> for small single module tests.  I use this testbench
> template so that I can quickly add basic test stimulus
> to a module.  From the testbench I can do operations
> that require similar setup.
>
>    >> python test_.py trace
>    >> python test_.py convert
>    >> python test_.py cosim
>
> Note, I usually have a more complicated test environment
> (only as complicated as needed and no more) for full
> designs.  In addition to the *full* verification
> environment I typically have individual module tests
> that use the template.
>
> I attached the template and an example using a simple
> adder.  Might be useful (might not).  Feel free to
> comment, always room for improvement.  This is a
> template that needs to be manually modified and uses
> some features only available in 0.8dev branch.
>
> Regards,
> Chris
>
>

I modified the /testbench/ template to be a class
which is more reusable.  Also, used the Python
argparser for the command line options.


Using the same example as the previous post the
CLI is:

    python test_myadder.py -h
    usage: test_myadder.py [-h] [--trace] [--cosim] [--convert]
                           [-Tclk CLOCK_PERIOD]

    Testbench

    optional arguments:
      -h, --help            show this help message and exit
      --trace               enable testbench tracing (create VCD file)
      --cosim               run cosimulation
      --convert             convert the module
      -Tclk CLOCK_PERIOD, --clock_period CLOCK_PERIOD
                            set the clock period

Again, this is intended to streamline the creation
of tests for small single module designs.

Regards,
Chris