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examples: add an FSM usage example (UART receiver).

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This commit is contained in:
whitequark 2018-12-26 10:10:27 +00:00
parent 72039b6072
commit 597d778cf6
2 changed files with 61 additions and 1 deletions
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2
nmigen/hdl/dsl.py
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@ -299,7 +299,7 @@ class Module(_ModuleBuilderRoot):
fsm_signal.nbits = bits_for(len(fsm_encoding) - 1)
# The FSM is encoded such that the state with encoding 0 is always the reset state.
fsm_decoding = {n: s for s, n in fsm_encoding.items()}
fsm_signal.decoder = lambda v: "{}/{}".format(fsm_decoding[n], n)
fsm_signal.decoder = lambda n: "{}/{}".format(fsm_decoding[n], n)
self._statements.append(Switch(fsm_signal,
OrderedDict((fsm_encoding[name], stmts) for name, stmts in fsm_states.items())))