Re: [Discuss-gnuradio] gnuradio-companion : File Descriptor Source module usage

[Tom Crane]

On Tue, 23 Jul 2019, Kevin Reid wrote:

> On Tue, Jul 23, 2019 at 8:33 PM Tom Crane <address@hidden> wrote:
>       Can anyone explain how to use the File Descriptor Source module in
>       gnuradio-companion?
>
>       I am trying to write a flow-graph to read data from an arbitrary file,
>       chosen via the GUI at run time?  This must be possible, right?  I can't
>       see how to do it.
>
>
> I don't have time to write a full explanation, but note that you want the File 
> Source block, not the File Descriptor Source block. The File Descriptor Source 
> is only really useful to read from standard input or for use in more complex 
> programs than you can write
> with GRC.
>
> The File Source block takes a string for the filename. If you create a Variable 
> block with a string value, you can enter the ID of the Variable instead of a 
> filename, and then change that Variable using GUI in the usual fashion. I 
> haven't tested this, but that's
> how it should work.

Thanks.  That did work.
Tom.