Re: [Discuss-gnuradio] how to schedule iq recordings?

[Martin Braun]

On 02/08/2015 02:42 AM, Marcus D. Leech wrote:
> On 02/07/2015 08:37 PM, John Meloche wrote:
>> Hello
>>
>> I have a need to record raw iq files of varing lengths of time and
>> each iq file needs to have a unique file name.  I am at the point now
>> where i can record and iq file with a time stamp of the pc clock. 
>> That is perfect so far, however, i need to automate this so that i can
>> schedule multple recordings of 5 minutes with a 1 minute standby
>> between each recording just as an example.  the timings need to be
>> flexible.  my issue is that my super simple record iq flow graph runs
>> until i manualy close it.  are there any ideas out there?  thanks a
>> lot guys.  John
>>
> There are, as in most programming exercises, a flarbillion (that's a
> technical term) ways of accomplishing any given task.  You might try,
> for example,
>   using a variable-name for your filesink filename (are you already
> doing that?), and then using XMLRPC for an outside 'scheduler' to tell
> it the new
>   filenames, and while you're in a "record nothing" timeframe, just have
> it recording to /dev/null.

Or you have a dedicated script that uses a 'head' block to record N
samples worth of time and terminates. Then, use some unix tool to call
that script whenever you need to.

M