25 lines
623 B
Python
25 lines
623 B
Python
from liteeth.common import *
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from liteeth.generic import *
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class LiteEthEtherboneProbe(Module):
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def __init__(self):
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self.sink = sink = Sink(eth_etherbone_packet_user_description(32))
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self.source = source = Source(eth_etherbone_packet_user_description(32))
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###
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self.submodules.fsm = fsm = FSM(reset_state="IDLE")
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fsm.act("IDLE",
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sink.ack.eq(1),
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If(sink.stb & sink.sop,
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sink.ack.eq(0),
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NextState("PROBE_RESPONSE")
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)
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)
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fsm.act("PROBE_RESPONSE",
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Record.connect(sink, source),
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source.pf.eq(0),
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source.pr.eq(1),
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If(source.stb & source.eop & source.ack,
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NextState("IDLE")
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)
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)
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