litex/misoclib/tools/litescope/common.py

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from migen.fhdl.std import *
from migen.bank.description import *
from migen.genlib.fsm import FSM, NextState
from migen.flow.actor import *
from migen.actorlib.fifo import AsyncFIFO, SyncFIFO
from migen.flow.plumbing import Buffer
from migen.fhdl.specials import Memory
def data_layout(dw):
return [("data", dw, DIR_M_TO_S)]
def hit_layout():
return [("hit", 1, DIR_M_TO_S)]
@DecorateModule(InsertReset)
@DecorateModule(InsertCE)
class Counter(Module):
def __init__(self, signal=None, **kwargs):
if signal is None:
self.value = Signal(**kwargs)
else:
self.value = signal
self.width = flen(self.value)
self.sync += self.value.eq(self.value+1)
@DecorateModule(InsertReset)
@DecorateModule(InsertCE)
class Timeout(Module):
def __init__(self, length):
self.reached = Signal()
###
value = Signal(max=length)
self.sync += value.eq(value+1)
self.comb += [
self.reached.eq(value == length)
]