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Today's Topics:
1. Rtl sdr (Andrew Rich)
2. Re: Rtl sdr (West, Nathan)
3. Re: Rtl sdr (Patrik Tast)
4. Unable to stop the flow graph after calling stop() (Activecat)
5. Re: Stop GRC flow graph after defined time (Activecat)
From: Andrew Rich <address@hidden>
Subject: [Discuss-gnuradio] Rtl sdr
Date: January 31, 2014 at 1:43:10 PM PST
To: GNURadio Discussion List <address@hidden>
Ok I have open suse Linux
I have gnu radio
I have rtl sdr dongle
I have been using gqrx rx
What can I do to get to know gnu radio
Something simple
Andrew
Sent from my iPhone
From: "West, Nathan" <address@hidden>
Subject: Re: [Discuss-gnuradio] Rtl sdr
Date: January 31, 2014 at 1:57:17 PM PST
To: Andrew Rich <address@hidden>
Cc: GNURadio Discussion List <address@hidden>
Reply-To: address@hidden
On Fri, Jan 31, 2014 at 3:43 PM, Andrew Rich <address@hidden> wrote:
Ok I have open suse Linux
I have gnu radio
I have rtl sdr dongle
I have been using gqrx rx
What can I do to get to know gnu radio
Something simple
Andrew
Hi Andrew,
That question is a little too broad to receive a very meaningful
answer, but I'll try. Saying you want to get to know GNU Radio implies
you're interested in coding or assembling flowgraphs to possibly make
an application. Are you looking for an issue with the GNU Radio
codebase to get in to contributing, or making applications?
I see from your website you made an ADS-B receiving station, so if
that interests you there's Nick Foster's ADS-B receiver, or his AIS
receiver for ships.
Nathan
From: Patrik Tast <address@hidden>
Subject: Re: [Discuss-gnuradio] Rtl sdr
Date: January 31, 2014 at 2:05:19 PM PST
To: Andrew Rich <address@hidden>
Cc: GNURadio Discussion List <address@hidden>
What can I do to get to know gnu radio
It is up to you Anything!
Patrik
On Sat, 2014-02-01 at 07:43 +1000, Andrew Rich wrote:
Ok I have open suse Linux
I have gnu radio
I have rtl sdr dongle
I have been using gqrx rx
What can I do to get to know gnu radio
Something simple
Andrew
Sent from my iPhone
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From: Activecat <address@hidden>
Subject: [Discuss-gnuradio] Unable to stop the flow graph after calling stop()
Date: February 1, 2014 at 4:51:42 AM PST
To: "address@hidden" <address@hidden>
Dear guru,
I am trying to create a block similar to Vector Source.
My objective is to stop the flow graph when the vector has sent out all its elements.
(This is equivalent to "Repeat: No" in Vector Source)
But the function stop() fails to work. The flow graph continue executing infinitely...
Question:
How to stop the flow graph when this->d_complete == true ?
Below is my code in file: "lib/integer_source_impl.cc"
#include <gr_io_signature.h>
#include "integer_source_impl.h"
namespace gr {
namespace activecat {
integer_source::make(const std::vector <int> &data, bool repeat)
{ return gnuradio::get_initial_sptr (new integer_source_impl( data, repeat )); }
// private constructor
integer_source_impl::integer_source_impl( const std::vector <int> &data, bool repeat)
: gr_sync_block("integer_source",
gr_make_io_signature( 0, 0, 0 ),
gr_make_io_signature( 1, 1, sizeof(int))),
d_data( data ),
d_count( 0 ),
d_completed( false )
{ }
// virtual destructor
integer_source_impl::~integer_source_impl()
{ }
int
integer_source_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
if ( d_completed )
{
std::cout << "Have completed one cycle!" << std::endl;
stop();
return 0;
}
int *out = (int *) output_items[0];
int size = d_data.size();
for (int i=0; i < noutput_items; i++)
{
out[i] = d_data[ d_count ];
d_count++;
if ( d_count >= size )
d_count = 0;
}
// Tell runtime system how many output items we produced.
return noutput_items;
}
} /* namespace activecat */
} /* namespace gr */
From: Activecat <address@hidden>
Subject: Re: [Discuss-gnuradio] Stop GRC flow graph after defined time
Date: February 1, 2014 at 4:57:53 AM PST
To: address@hidden, "address@hidden" <address@hidden>
Dear Josh,
Your method below doesn't work on GNU Radio v3.6.5.1
In this case, how to stop the flow graph in v3.6.5.1 ..?
Thanks & regards,
activecat
Subject: Re: [Discuss-gnuradio] Stop GRC flow graph after defined time
Date: Wed, 29 Sep 2010 08:33:49 -0700
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.12) Gecko/20100915 Thunderbird/3.0.8
You can use the Misc->Head block to limit the samples. Then set the flow graph options to "run to completion", this option is only available in non-gui mode. See the options blocks.
-Josh
On 09/29/2010 04:31 AM, Thorsten Laude wrote:
Hallo,
I'm executing a flow graph in GRC and want to stop this flow graph
after some defined time, for example 3 seconds, or after a defined
amount of samples.
Currently I stop the flow graph by clicking on "Kill the flow graph".
How can I implement, that the flow graph is stopped automatically?
Thorsten
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