Re: [Discuss-gnuradio] Reconfiguring Flowgraphs

Hi Xianda,

as usual, saying "doesn't work", "can't run", "behaves wrong" really
gives no clue what's wrong.
Please follow
http://gnuradio.org/redmine/projects/gnuradio/wiki/ReportingErrors ,
especially "How do I ask?".

Greetings,
Marcus

On 25.07.2014 09:36, xianda wrote:
> Hi Marcus:
> Thank you so much for your kindly reply. And I disconnect block A and sink 1.
>
> def main():
> tb=my_top_block()
> tb.start()
> time.sleep(30)
>
> #stop flowgraph
> tb.lock()
> tb.disconnect((tb.uhd_usrp_source_0,0),(tb.rx_0,0))
> tb.disconnct((tb.rx_0,0),tb.snk1)
> #start flowgraph
> tb.connect((tb.uhd_usrp_source_0,0),(tb.rx_1,0))
> tb.connect((tb.rx_1,0),tb.snk)
> # blockA:(tb.rx_0,0) blockB:(tb.rx_1,0)
> tb.unlock()
>
> tb.wait()
> And It can run.But new problem exists.My new flowgraph:
>
> source--->block B(just one block)--->sink2
> can't run(I have already tested my new flowgraph alone,it's normal.But after reconfiguring flowgraph,it can't run normally. ).I think it's blocking because of the tb.wait().I know the wait is a blocking call that sits there and waits for the flowgraph to finish.I just want my new flowgraph run.Thank you.
> Best regards,
> xd
>
>
>
>
>
>
>
>
>
> At 2014-07-21 08:06:52, "Marcus Müller" <marcus.mueller@ettus.com> wrote:
> unless you also disconnect block A and sink1, GNU Radio will continue to assume that block A should produce output for sink1, and it can't do that without input.
>
> Greetings,
> Marcus
>
> On 21.07.2014 13:43, xianda wrote:
>
> I forget to say:the "sink" also different with each other.Namely:
> source--->block A(just one block)--->sink1
> source--->block B(just one block)--->sink2
> Can someone help me?Thanks.
>
>
>
>
>
>
> At 2014-07-21 06:50:10, "xianda" <wangxianda920502@163.com> wrote:
>
> Hi all:
> Thank you in advance.I want to ask some questions about the "Reconfiguring Flowgraphs".
> My flowgraphs:
> source--->block A(just one block)--->sink
> And I want to run the flowgraphs for 30 seconds,and then run the other flowgraphs:
> source--->block B(just one block)--->sink
> And I have read the API,and then I write something like this:
>
> def main():
> tb=my_top_block()
> tb.start()
> time.sleep(30)
>
> #stop flowgraph
> tb.lock()
> tb.disconnect((tb.uhd_usrp_source_0,0),(tb.rx_0,0))
>
> #start flowgraph
> tb.connect((tb.uhd_usrp_source_0,0),(tb.rx_1,0))
> tb.connect((tb.rx_1,0),tb.snk)
> # blockA:(tb.rx_0,0) blockB:(tb.rx_1,0)
> tb.unlock()
>
> tb.wait()
> But it go error: RuntimeError: delay(4): insufficient connected input ports (1 needed, 0 connected)
> Can someone help me?Thank you.
> Best regards,
> xd
>
>
>
>
>
>
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