uart: generate ack for rx (serialboot OK with sim)

m-labs · Mar 3, 2015 · 200791c · 200791c
1 parent 7c058a5
commit 200791c
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Showing 2 changed files with 4 additions and 2 deletions.
diff --git a/misoclib/com/uart/__init__.py b/misoclib/com/uart/__init__.py
@@ -26,5 +26,6 @@ def __init__(self, phy):
 		]
 		self.comb += [
 			self.ev.tx.trigger.eq(phy.sink.stb & phy.sink.ack),
-			self.ev.rx.trigger.eq(phy.source.stb) #phy.source.ack supposed to be always 1
+			self.ev.rx.trigger.eq(phy.source.stb & phy.source.ack),
+			phy.source.ack.eq(~self.ev.rx.pending)
 		]
diff --git a/misoclib/com/uart/phy/sim.py b/misoclib/com/uart/phy/sim.py
@@ -12,5 +12,6 @@ def __init__(self, pads):
 			self.sink.ack.eq(pads.source_ack),
 
 			self.source.stb.eq(pads.sink_stb),
-			self.source.data.eq(pads.sink_data)
+			self.source.data.eq(pads.sink_data),
+			pads.sink_ack.eq(self.source.ack)
 		]