Add init parameter to Timeout

[andreasWallner]

Resurrection of an older PR...

Context, Motivation & Description

Currently Timeout is initialized to be False.
This can for sure be changed with init like this:

val t = Timeout(5)
t.init(True)

(which will produce slightly ugly verilog with two reset statements, but work)

But it feels different from other things, i.e. this doesn't do what one might initially assume: val t = Timeout(5) init True (changes type of t).

This change adds a parameter, making it feel more like other library components or functions like e.g. rise

RTD change tbd.

Impact on code generation

None

[Dolu1990]

hmm, adding the following to the Timeout class :

  def init(value : Bool): this.type = {
    state.removeInitAssignments()
    state.init(value)
    this
  }

would work cleanly.
Allowing a :

    val t = Timeout(5) init(True)    

What about doing things like this ?

[andreasWallner]

sure, just saw that some other utilities use the same

[Dolu1990]

<3