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core: add FSM support (and example)

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This commit is contained in:
Florent Kermarrec 2018-07-20 09:36:42 +02:00
parent 2ca58e488f
commit bfd06f819e
2 changed files with 17 additions and 0 deletions
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13
example_designs/targets/simple.py
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@ -59,6 +59,19 @@ class LiteScopeSoC(SoCCore):
self.cpu_or_bridge.wishbone
]
# fsm group
fsm = FSM(reset_state="STATE1")
self.submodules += fsm
fsm.act("STATE1",
NextState("STATE2")
)
fsm.act("STATE2",
NextState("STATE1")
)
analyzer_groups[2] = [
fsm
]
# analyzer
self.submodules.analyzer = LiteScopeAnalyzer(analyzer_groups, 512)

4
litescope/core.py
View file

@ -274,6 +274,10 @@ class LiteScopeAnalyzer(Module, AutoCSR):
for s in signals:
if isinstance(s, Record):
split_signals.extend(s.flatten())
elif isinstance(s, FSM):
s.do_finalize()
s.finalized = True
split_signals.append(s.state)
else:
split_signals.append(s)
new_groups[n] = split_signals