litex/examples/basic/graycounter.py

21 lines
574 B
Python

from random import Random
from migen.fhdl.std import *
from migen.genlib.cdc import GrayCounter
from migen.sim.generic import run_simulation
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, selfp):
print("{0:0{1}b} CE={2} bin={3}".format(selfp.gc.q,
self.width, selfp.gc.ce, selfp.gc.q_binary))
selfp.gc.ce = self.prng.getrandbits(1)
if __name__ == "__main__":
run_simulation(TB(), ncycles=35)