artiq/artiq/gateware/amp/mailbox.py

22 lines
512 B
Python

from migen import *
from misoc.interconnect import wishbone
class Mailbox(Module):
def __init__(self):
self.i1 = wishbone.Interface()
self.i2 = wishbone.Interface()
# # #
value = Signal(32)
for i in self.i1, self.i2:
self.sync += [
i.dat_r.eq(value),
i.ack.eq(0),
If(i.cyc & i.stb & ~i.ack,
i.ack.eq(1),
If(i.we, value.eq(i.dat_w))
)
]