Re: Setting of enum values

Marcel Hellwig <[email protected]> Thu, 21 Jan 2016 18:19:35 +0100
Newsgroups	gmane.comp.python.myhdl
Message-ID	<[email protected]>
On 21.01.2016 17:34, Christopher Felton wrote:
> 
>      from myhdl import *
> 
>      class MyConstants(object):
>          def __init__(self):
>              self.const1 = int(intbv("1111_0001"))
>              self.const2 = int(intbv("1010_0101"))

why the intbv -> int conversion here? Just for using bitwise representation?

> 
>      def const_select(sel, x):
>          const = MyConstants()
> 
>          @always_comb
>          def beh_select():
>              if sel == 1:
>                  x.next = const.const1
>              elif sel == 2:
>                  x.next = const.const2
>              else:
>                  x.next = 0
> 
>          return beh_select
> 


Although I can reproduce your example in some test-cases, I can't use it
in my project...

I use two approaches here. First is to create a instance of the class in
the __init__.py. Then I will get a

> Local variable may be referenced before assignment: ProcMode

When I create the instance directly in my myhdl-method, I will get

> Free variable should be a Signal or an int: ProcMode


The advantage of having the enum over, that you can use it directly in a
Signal, e.g.

> mode = Signal(ProcMode.User)

currently, it will complain about not havin the bitsize (I have set it
manually, which will work fine)

I'm not happy about the solutions yet, altough I really appreciate the
help I'm getting here (thanks!), but in my eyes, I just want to solve a
simple problem. Has never anyone encountered this and made some
thoughts? :/

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