27 lines
665 B
Python
27 lines
665 B
Python
from nmigen import *
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from nmigen.back import rtlil, verilog, pysim
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class Counter:
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def __init__(self, width):
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self.v = Signal(width, reset=2**width-1)
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self.o = Signal()
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def get_fragment(self, platform):
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m = Module()
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m.d.sync += self.v.eq(self.v + 1)
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m.d.comb += self.o.eq(self.v[-1])
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return m.lower(platform)
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ctr = Counter(width=16)
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frag = ctr.get_fragment(platform=None)
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# print(rtlil.convert(frag, ports=[ctr.o]))
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print(verilog.convert(frag, ports=[ctr.o]))
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with pysim.Simulator(frag,
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vcd_file=open("ctr.vcd", "w")) as sim:
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sim.add_clock(1e-6)
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sim.run_until(100e-6, run_passive=True)
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