Method: HDLRuby::High::Std#fsm

Defined in:
lib/HDLRuby/std/fsm.rb

#fsm(*args, &ruby_block) ⇒ Object

Declare a new fsm. The arguments can be any of (but in this order):

  • +name+:: name.
  • +clk+:: clock.
  • +event+:: clock event.
  • +rst+:: reset. (must be declared AFTER clock or clock event).

If provided, +ruby_block+ the fsm is directly instantiated with it.



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# File 'lib/HDLRuby/std/fsm.rb', line 532

def fsm(*args, &ruby_block)
    # Sets the name if any
    unless args[0].respond_to?(:to_event) then
        name = args.shift.to_sym
    else
        name = :""
    end
    # Get the options from the arguments.
    options, args = args.partition {|arg| arg.is_a?(Symbol) }
    # Create the fsm.
    fsmI = FsmT.new(name,*options)
    
    # Process the clock event if any.
    unless args.empty? then
        fsmI.for_event(args.shift)
    end
    # Process the reset if any.
    unless args.empty? then
        fsmI.for_reset(args.shift)
    end
    # Is there a ruby block?
    if ruby_block then
        # Yes, generate the fsm.
        fsmI.build(&ruby_block)
    else
        # No return the fsm structure for later generation.
        return fsmI
    end
end