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artiq/soc/artiqlib/rtio/rbus.py
2014-09-05 17:06:41 +08:00

31 lines
763 B
Python

from migen.fhdl.std import *
from migen.genlib.record import Record
def create_rbus(fine_ts_bits, pads, output_only_pads):
rbus = []
for pad in pads:
layout = [
("o_stb", 1),
("o_value", 2)
]
if fine_ts_bits:
layout.append(("o_fine_ts", fine_ts_bits))
if pad not in output_only_pads:
layout += [
("oe", 1),
("i_stb", 1),
("i_value", 1)
]
if fine_ts_bits:
layout.append(("i_fine_ts", fine_ts_bits))
rbus.append(Record(layout))
return rbus
def get_fine_ts_width(rbus):
if hasattr(rbus[0], "o_fine_ts"):
return flen(rbus[0].o_fine_ts)
else:
return 0