[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] GRC problems
From: |
Johannes Demel |
Subject: |
Re: [Discuss-gnuradio] GRC problems |
Date: |
Sat, 12 Oct 2013 13:58:31 -0700 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.0 |
On 12.10.2013 10:58, Jared Clements wrote:
> I'll confirm that #2 is either a bug or merely unexpected behavior. I
> work around it by prototyping hier blocks as custom GRC blocks, then
> using that to build an OOT module block that actually works. Being
> unable to enter parameters at run time is severely limiting.
For now this is the solution of choice. But in my opinion a graphical
representation helps to understand a flowgraph and I want to create
everything as self-explanatory as possible.
>
> I've not experienced #1, that functionality seems to work once I get the
> python file and the GRC file matching. I was getting the same errors
> for a while until I found the right idiom.
Can you share your setup? Or point to a repository? That would be very
helpful.
Johannes
>
> Jared
>
> On Oct 12, 2013 11:18 AM, "Johannes Demel" <address@hidden
> <mailto:address@hidden>> wrote:
>
> Hi list,
>
> I discovered 2 problems with GRC recently.
>
> 1. I have a custom block with a message port (with a fixed port name)
> and some stream ports which include a <nports>...</nports> definition.
> The whole thing works fine as long as I have a fixed number of ports.
> Each declared separately. But as soon as I use a nport statement GRC
> won't display this block correctly [1]. Even worse if I enter values
> which affect the number of ports, the whole flowgraph will disappear.
> Just a grey flowgraph page.
>
> 2. To make things easier for me (and to not create a well known kind of
> artwork) I use hier blocks. This works fine as long as I have fixed size
> vector ports. But adding a parameter block, say vlen, for vector size to
> dynamically change the hier block doesn't work. The python generator
> does not generate the hier block python file with vlen as vector size.
> Instead it puts in the default value. A parameter block without default
> value results in an error. A hard coded vector size is not exactly
> helpful in this case.
>
> I didn't have time to dig into it yet. Thus I thought I share my
> experience with you. Maybe I am not the only one with this problem and
> someone already knows how to fix it.
>
> Happy hacking
> Johannes
>
> [1]
> <sink>
> <name>msg</name>
> <type>message</type>
> <optional>1</optional>
> </sink>
>
> <sink>
> <name>in</name>
> <type>complex</type>
> <vlen>$vlen</vlen>
> <nports>$ports</nports>
> </sink>
>
> _______________________________________________
> Discuss-gnuradio mailing list
> address@hidden <mailto:address@hidden>
> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>