PyVCD

The PyVCD package writes Value Change Dump (VCD) files as specified in IEEE 1364-2005.

Read the documentation <http://pyvcd.readthedocs.io/en/latest/>_.

Visit PyVCD on GitHub <https://github.com/westerndigitalcorporation/pyvcd>_.

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Quick Start

.. code::

import sys from vcd import VCDWriter with VCDWriter(sys.stdout, timescale='1 ns', date='today') as writer: ... counter_var = writer.register_var('a.b.c', 'counter', 'integer', size=8) ... real_var = writer.register_var('a.b.c', 'x', 'real', init=1.23) ... for timestamp, value in enumerate(range(10, 20, 2)): ... writer.change(counter_var, timestamp, value) ... writer.change(real_var, 5, 3.21) $date today $end $timescale 1 ns $end $scope module a $end $scope module b $end $scope module c $end $var integer 8 ! counter $end $var real 64 " x $end $upscope $end $upscope $end $upscope $end $enddefinitions $end #0 $dumpvars b1010 ! r1.23 " $end #1 b1100 ! #2 b1110 ! #3 b10000 ! #4 b10010 ! #5 r3.21 "