llvm / llvm/circt

[PyCDE] Expanded syntax for FSMs

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#3,646 3 comments 0 reactions 1 assignee View on GitHub

@mortbopet is already working on this.

Since Aug 3, 2022.

PyCDE
Dominant language
C++
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Description

I was thinking something like:

@fsm.machine
class F1:
  clk = Clock()
  go = Input(types.i1)
  valid = Input(types.i1)
  data = Input(types.i4)

  @fsm.state(initial=True)
  def a(ports, next):
    with If(ports.go):
      next.b()
    EndIf()

  @fsm.state
  def b(ports, next):
    with If(ports.valid):
      with If(ports.data == 3):
        next.a()
      EndIf()
    EndIf()

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