Re: [myhdl-list] Interfaces in Interfaces

[Ben R. <be...@re...>]

So it looks like it's possible in internal interfaces but you can't
currently use them in the top interface.

https://github.com/jandecaluwe/myhdl/blob/08519b452f153885d3cc43038111b7779e2bb2f1/myhdl/conversion/_analyze.py#L1255

Is there any deep reason that this hasn't been done?  Or should I just go
ahead and fix this?

On Tue, May 5, 2015 at 9:35 AM, Ben Reynwar <be...@re...> wrote:

> Problem was I was wrapping the interface with Signal.
>
> i.e.
> self.data = Signal(Complex(width=width))
> should have been
> self.data = Complex(width=width)
>
> On Tue, May 5, 2015 at 8:49 AM, Ben Reynwar <be...@re...> wrote:
>
>> Great, thank you.  I must have been doing something else wrong.  And
>> thanks for the upper bound tip!
>>
>> On Tue, May 5, 2015 at 6:39 AM, Christopher Felton <
>> chr...@gm...> wrote:
>>
>>> On 5/4/15 11:01 PM, Ben Reynwar wrote:
>>> > Hi all,
>>> >
>>> > Is it possible to use interface definitions in interfaces?  For example
>>> > I might have an interface for a complex number, and then an interface
>>> > for a back-pressured stream of complex numbers that uses the complex
>>> > number interface as a component.
>>>
>>> Yes, it is possible.  A basic test case exists in
>>> the test suite:
>>>
>>>
>>> https://github.com/jandecaluwe/myhdl/blob/master/myhdl/test/conversion/general/test_interfaces3.py#L28
>>>
>>> Regards,
>>> Chris
>>>
>>>
>>>
>>> >
>>> > e.g.
>>> >
>>> > class Complex(object):
>>> >
>>> >      def __init__(self, width):
>>> >          maxval = pow(2, width-1)-1
>>>
>>> Note, Python is exclusive on the upper bounds, MyHDL
>>> follows this concept.  The max bound is one more than
>>> the max value.
>>>
>>> (python exclusive upper bound)
>>> http://stackoverflow.com/a/11364711/760977
>>>
>>> Regards,
>>> Chris
>>>
>>>
>>>
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>>
>>
>