Re: File Source - File Sink data transfer

[Cinaed Simson]

Hi Jeff - let's take this offline.

We'll use the standard xxd "hello world" example.

  echo "0000 4865 6c6c 6f20 776f 726c 6421 0000" > hex.file

  xxd -r -p hex.file > binary.file

And you can look at the binary.file using

  xxd binary.file

-- Cinaed

On 5/16/22 09:56, user 1 wrote:

> Hi
>       Steven,
>       
>       
>       Thank you for your suggestion, but /dev/urandom  is an empty file
>       ????   See Screenshot_3
>       
>       
>       
>       jeff
>       
>       
>       ------------------
>       
>       
>       
>       
>       Le 16/05/2022 à 16:41, Steven Barbo a écrit :
>       
> > Howdy Jeff.
> >         
> >         What happens if you use /dev/urandom as file source?
> >         
> >         
> >         On Mon, May 16, 2022 at 9:09 AM user 1 <gnuradio@onditech.com
> >         <mailto:gnuradio@onditech.com>> wrote:
> >         
> >         
> >             Hello Cinaed,
> >         
> >         
> >             Unfortunately scheme doesn't work, even with a bin file.
> >         
> >         
> >         
> >         
> >             jeff
> >         
> >         
> >         
> >             ------------------------------
> >         
> >         
> >             Le 16/05/2022 à 12:06, Cinaed Simson a écrit :
> >         
> >              > Hi Jeff - the error indicates the file source has the
> >         wrong data
> >         
> >             type,
> >         
> >              > i.e. it may not be binary data.
> >         
> >              >
> >         
> >              > If the input file contains hex numbers, then you need
> >         to convert
> >         
> >             each
> >         
> >              > hex number to a binary number and concatenate them.
> >         
> >              >
> >         
> >              > -- CInaed
> >         
> >              >
> >         
> >              >
> >         
> >              > For instance, 40 hex is equivalent to 01000000 binary.
> >         
> >              >
> >         
> >              > For instance,
> >         
> >              >
> >         
> >              > On 5/16/22 00:46, user 1 wrote:
> >         
> >              >> Hi,
> >         
> >              >>
> >         
> >              >> Somebody could tell me why this simple scheme
> >         doesn't work (see the
> >         
> >              >> screenshots)?
> >         
> >              >>
> >         
> >              >>       File Source   --->   Throttle   
> >         --->   File Sink
> >         
> >              >>
> >         
> >              >>
> >         
> >              >> I work under Ubuntu 20.04.4  LTS and GnuRadio
> >         3.9.6
> >         
> >              >>
> >         
> >              >>
> >         
> >              >> This scheme worked fine in the past with previous
> >         releases of
> >         
> >             GnuRadio.
> >         
> >              >>
> >         
> >              >>
> >         
> >              >> Thank you for your help.
> >         
> >              >>
> >         
> >              >>
> >         
> >              >>
> >         
> >              >> Jeff
> >         
> >              >
> >         
> >         
> >         
> >         
> >         -- 
> >         If something is requisite, how can it possibly be, prerequisite?
> >         
> >         
> >         vanitas vanitatum omnia vanitas
> >         
> >         later, steve
> >         
> >         http://umn.edu/~barbo <http://umn.edu/~barbo>
> >         
> >       
>