signature-flow.py

#!/usr/bin/env python

from amaranth import *
from amaranth.lib.wiring import *
from amaranth.back import verilog

class RequestConsumer(Signature):
    def __init__(self):
        super().__init__({
            "data": In(32),
            "valid": In(1),
            "ready": Out(1),
        })

class ResponseProducer(Signature):
    def __init__(self):
        super().__init__({
            "data": Out(32),
            "valid": Out(1),
        })

class MyModule(Component):
    def __init__(self):
        signature = Signature({
            "req": In(RequestConsumer()),
            "resp": Out(ResponseProducer()),
        })
        super().__init__(signature)

    def elaborate(self, platform):
        m = Module()
        m.d.comb += [
            self.req.ready.eq(1),
            self.resp.data.eq(self.req.data + 1),
            self.req.valid.eq(1),
        ]
        return m

m = MyModule()
v = verilog.convert(m)