Hi Marcus:
Thank you so much for your kindly reply.I have attached my code.I want to run the flowgraph 1 at first,and then I disconnct it.Then I want to run the flowgraph 2.
Flowgraph 1:
uhd_usrp_source---->>>ofdm_rx_0---->>>file sink
Flowgraph 2:
uhd_usrp_source---->>>ofdm_rx_1---->>>blocks_vector_to_stream---->>>blks2_tcp_sink
Note:
ofdm_rx is a block in gnuradio/gr-digital/python/digital/ofdm_txrx.py.I make some changes on ofdm_rx.And I get two new block:ofdm_rx_0 and ofdm_rx_1.I have tested flowgraph 1 and flowgraph 2 respectively.And they all run successfully.And now I just want to run flowgraph 1 in 30 seconds and then disconnct flowgraph 1.Then run flowgraph 2 forever.But now the flowgraph 2 don't receive samples.And in the ofdm_rx_1 I add some file sink.These file sink display null.When I have tested flowgraph 1 and flowgraph 2 respectively,these file sink all have samples.So I think maybe encounter some errors when I reconfiguring flowgraphs.Thank you so much.So kindly of you.Thanks.
Best regards,
xd
At 2014-07-25 05:40:58, "Marcus Müller" <address@hidden> wrote:
>Xianda,
>my advice: Please try to draw a complete picture of what you are doing.
>What are your sources, blocks you interchange, your sinks, what do you
>do to make your flowgraph stop (under which circumstances)? I really
>can't read your mind; all I know about your flow graph is what you tell
>me, which is that you have 1 source, and two in-and-output blocks and
>two sinks, and that you first connect src - blk1 - sink1 and then src -
>blk2 - sink2.
>
>You omitted that it is a USRP source until you send an excerpt of your
>code, you omit what kind of blocks blk{1,2} and what kind of sinks
>sink{1,2} are. You don't tell me in what relationship your "new"
>flowgraph stands to your reconfigured one etc.
>
>It's like you expect me to guess what you are doing in my own time to
>try to help you, just to save you from revealing what you are doing.
>This won't work.
>Please explain, in whole, what you're trying to do, what you have tried
>to verify that it goes wrong, which problems you encountered and so on,
>and we, as a list, might be able to figure out what's going on.
>
>Greetings,
>Marcus
>
>
>On 25.07.2014 11:32, xianda wrote:
>> Hi Marcus:
>> Thank you so much.Do you indicate my new flowgraph had run?I have add a file sink,but it is null.And I think it don't run.I don't know why.Can you give me some advices?Thank you so much.
>> Best regards,
>> xd
>>
>>
>>
>>
>>
>>
>>
>>
>> At 2014-07-25 05:27:28, "Marcus Müller" <address@hidden> wrote:
>>> Hi xianda,
>>>
>>> tb.wait() does exactly what you said it does: Wait for the flow graph to
>>> complete.A flowgraph will run until one of the blocks in that flowgraph
>>> signal that they're done, or you call tb.stop().
>>> If you don't have such a block, your tb will run forever, and wait()
>>> will never return.
>>>
>>> Greetings,
>>> Marcus
>>>
>>>
>>> On 25.07.2014 11:13, xianda wrote:
>>>> Hi Marcus:
>>>> Thank you for your reply.Sorry for that if you can't understand.I will try my best to explain my question.
>>>>
>>>> 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()
>>>> print "start"
>>>>
>>>> I want to disconnct flow graph, and then to start a new connect.My code hang in tb.wait(),it can't go on.I add print "start" and it can't display "start".Sorry for my poor english if you can't understand.
>>>> Thank you so much.
>>>> Best regards,
>>>> xd
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>> At 2014-07-25 04:59:52, "Marcus Müller" <address@hidden> wrote:
>>>>> 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" <address@hidden> 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" <address@hidden> 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
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Discuss-gnuradio mailing list
>>>>>> address@hidden://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>>>>
>
mimo_see_ofdm_miso.py