Re: [Gtkwave-users] Expand bus as words instead of bits

[Peter O. <pet...@gm...>]

If you can send me an example waveform in the format you are looking at I'd
be happy to take a look.  Its possible your signals are in a different
format than I usually deal with.

-Peter

On Wed, Feb 4, 2015 at 1:48 PM, Alex Forencich <al...@al...>
wrote:

>  How do you split a signal like that?  The signals I have are generally
> something like this:
>
> axis_???_tdata[63:0]
> axis_???_tready
> axis_???_tvalid
> axis_???_tlast
> axis_???_tkeep[7:0]
>
> Is there any way to split the tdata signal into one signal per byte in
> gtkwave?  I can group the individual bits if I expand the signal, but the
> group does not show the value of the combined signals.
>
> Alex Forencich
>
>
> On 02/04/2015 01:37 PM, Peter Ogden wrote:
>
>  You can alias and group the same signals in multiple ways.  This is
> great if you have multiple functions muxed on a set of GPIO pins which
> change meaning throughout the waveform.
>
> For your situation, I would group the signals bus into a few groups:
>  BUS //All bus signals.  Helpful for spotting activity at a glance.
> BUS_CONTROL //Just the control and clocks signals
> BUS_DATA //All data bits
> BUS_DATA_B0 //Byte0
> BUS_DATA_B1 //Byte1
> BUS_DATA_B2 //Byte2
> BUS_DATA_B3 //Byte3
>
>  When you have the group collapsed it will show the value in
> binary/hex/decimal on that group between each transition point.
>
>  -Peter
>
> On Wed, Feb 4, 2015 at 12:38 PM, Alex Forencich <al...@al...>
> wrote:
>
>> For large buses, double clicking expands them into their constituent
>> bits.  However, in some cases it is very handy to look at a bus in terms
>> of something larger, such as bytes or 16 bit words.  This can be useful
>> to clearly delineate how transfers over wide buses (32, 64, 128+ bits)
>> are split up as individual bytes transferred in parallel.  This is
>> especially useful for things like 10G Ethernet, which is sent as 8
>> parallel byte lanes in one 64-bit bus.  Xilinx datasheets show the bus
>> broken out into individual byte wide lanes to make it easy to delineate
>> individual packets; it would be nice to be able to do this in gtkwave as
>> well.
>>
>> Alex Forencich
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Dive into the World of Parallel Programming. The Go Parallel Website,
>> sponsored by Intel and developed in partnership with Slashdot Media, is
>> your
>> hub for all things parallel software development, from weekly thought
>> leadership blogs to news, videos, case studies, tutorials and more. Take a
>> look and join the conversation now. http://goparallel.sourceforge.net/
>> _______________________________________________
>> Gtkwave-users mailing list
>> Gtk...@li...
>> https://lists.sourceforge.net/lists/listinfo/gtkwave-users
>>
>
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming. The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net/
>
>
>
> _______________________________________________
> Gtkwave-users mailing lis...@li...://lists.sourceforge.net/lists/listinfo/gtkwave-users
>
>
>
>
> ------------------------------------------------------------------------------
> Dive into the World of Parallel Programming. The Go Parallel Website,
> sponsored by Intel and developed in partnership with Slashdot Media, is
> your
> hub for all things parallel software development, from weekly thought
> leadership blogs to news, videos, case studies, tutorials and more. Take a
> look and join the conversation now. http://goparallel.sourceforge.net/
> _______________________________________________
> Gtkwave-users mailing list
> Gtk...@li...
> https://lists.sourceforge.net/lists/listinfo/gtkwave-users
>
>