return self.ready_i & self.d_valid
return self.ready_i
- def connect_to_next(self, nxt):
+ def connect_to_next(self, nxt, do_data=True):
""" helper function to connect to the next stage data/valid/ready.
data/valid is passed *TO* nxt, and ready comes *IN* from nxt.
use this when connecting stage-to-stage
"""
- return [nxt.valid_i.eq(self.valid_o),
- self.ready_i.eq(nxt.ready_o),
- nmoperator.eq(nxt.data_i, self.data_o),
- ]
+ res = [nxt.valid_i.eq(self.valid_o),
+ self.ready_i.eq(nxt.ready_o)]
+ if do_data:
+ res.append(nmoperator.eq(nxt.data_i, self.data_o))
+ return res
- def _connect_out(self, nxt, direct=False, fn=None):
+ def _connect_out(self, nxt, direct=False, fn=None, do_data=True):
""" internal helper function to connect stage to an output source.
do not use to connect stage-to-stage!
"""
ready_i = nxt.ready_i if direct else nxt.ready_i_test
+ res = [nxt.valid_o.eq(self.valid_o),
+ self.ready_i.eq(ready_i)]
+ if not do_data:
+ return res
data_o = fn(nxt.data_o) if fn is not None else nxt.data_o
- return [nxt.valid_o.eq(self.valid_o),
- self.ready_i.eq(ready_i),
- nmoperator.eq(data_o, self.data_o),
- ]
+ return res + [nmoperator.eq(data_o, self.data_o)]
def elaborate(self, platform):
m = Module()