from random import Random from migen.fhdl.std import * from migen.genlib.cdc import GrayCounter from migen.sim.generic import Simulator class TB(Module): def __init__(self, width=3): self.width = width self.submodules.gc = GrayCounter(self.width) self.prng = Random(7345) def do_simulation(self, s): print("{0:0{1}b} CE={2} bin={3}".format(s.rd(self.gc.q), self.width, s.rd(self.gc.ce), s.rd(self.gc.q_binary))) s.wr(self.gc.ce, self.prng.getrandbits(1)) sim = Simulator(TB()) sim.run(35)