- )
- fsm.act("ACK",
- self.wishbone.ack.eq(1),
- NextState("WRITE-READ")
- )
+ fsm.act("ACK",
+ self.wishbone.ack.eq(1),
+ self.wishbone.dat_r.eq(self.csr.dat_r),
+ NextState("IDLE")
+ )
+ else:
+ fsm = FSM(reset_state="WRITE-READ")
+ self.submodules += fsm
+ fsm.act("WRITE-READ",
+ self.csr.dat_w.eq(self.wishbone.dat_w),
+ If(self.wishbone.cyc & self.wishbone.stb,
+ self.csr.adr.eq(self.wishbone.adr),
+ self.csr.we.eq(self.wishbone.we & (self.wishbone.sel != 0)),
+ NextState("ACK")
+ )
+ )
+ fsm.act("ACK",
+ self.wishbone.ack.eq(1),
+ self.wishbone.dat_r.eq(self.csr.dat_r),
+ NextState("WRITE-READ")
+ )