CODEWITHSUNDEEP
macrossystem-verilog
Elisha Kupietzky
Elisha Kupietzky

Reputation: 114

Two macros that "complete" eachother

EDIT: seems to be working now

I'm trying to write two macros that will be used to wrap any code. For example:

`define start_of_macro()begin\
fork\
  begin\
    #20us;\
  end\
  begin\
end

and the second part:

`define end_of_macro()begin\
  end\
join_any disable_fork;\
end

And use it something like this:

`start_of_macro
  while(1)begin #20ns; end
`end_of_macro

I keep on getting errors due to the fact that each macro isn't legal on it's own. Any way to overcome this?

Thanks in advance!

Upvotes: 0

Views: 469

Answers (1)

Tudor Timi
Tudor Timi

Reputation: 7573

I guess you're trying to fork something in parallel to the 20 microsecond wait. You have an extra end in the opening macro. It should be:

`define start_of_macro()\
  begin\
    fork\
      begin\
        #20us;\
      end\
      begin

You also have an extra begin in the closing macro. It should be:

`define end_of_macro()\
      end\
    join_any\
    disable_fork;\
  end

After macro expansion, the code that goes between the opening and the closing macros will be reside between a begin (from start_of_macro) and an end (from end_of_macro).

Upvotes: 2

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