Hi,
Replace all xxx.run with xxx.start() and put xxx.wait() followed by
xxx.stop() to stop the flowgraph
Best Regards,
Firas
----- Original Message ----
> From: Andy_Long <luckshiw...@yahoo.com.cn>
> To: Discuss-gnuradio@gnu.org
> Sent: Thu, April 15, 2010 10:50:39 AM
> Subject: Re: re[Discuss-gnuradio] configuring with usrp2 src present
>
>
Hello,Johnathan
Did I have some misunderstanding about it? I still
> think the problem is from
USRP2 rather than flow graph.
For example, I
> made some tests to change the while loop such as:
def main():
>
t = my_top_block()
t.run()
> print t.c2mag.unmuted(): #show exceed threshold or not
> time.sleep(3)
m = my_top_block()
m.run()
>
print m.c2mag.unmuted(): #show exceed threshold or not
>
time.sleep(3)
n = my_top_block()
>
n.run()
print n.c2mag.unmuted(): #show
> exceed threshold or not
time.sleep(3)
As same
> condition as before, after two correct outputs, the third one start
to show
> the error.
Thank you.
regards,
Andy
Johnathan
> Corgan-2 wrote:
>
> On Wed, Apr 14, 2010 at 12:27, Andy_Long <
> ymailto="mailto:luckshiw...@yahoo.com.cn";
> href="mailto:luckshiw...@yahoo.com.cn";>luckshiw...@yahoo.com.cn>
> wrote:
>
>> I have faced the same problem. I try to received the
> limited samples from
>> USRP2 by using "head"block. It should return a
> -1 and the flow graph will
>> stop, am I right?
>
> The
> flowgraph will not only stop, but will end its lifetime. Once
>
> run() has returned, the flowgraph is no longer usable, or as we like
> to
> say, further operations on it are "undefined."
>
> In general,
> starting and stopping an individual flowgraph should occur
> at the same
> level of processing as application startup and shutdown.
> Anything else
> is usually a sign of incorrect design (though not
> always.) The
> run() method on a top block is really just a convenient
> way of telling
> GNU Radio your application has nothing else to do until
> the flowgraph
> exits.
>
> Can you describe what you are trying to do?
>
>
> Johnathan
>
>
>
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