Tom, last time I got gnuradio using git the path I had to apply the patch,
Edmar 2011/7/31 Tom Rondeau <trondeau1...@gmail.com> > On Fri, Jul 29, 2011 at 9:33 AM, Edmar Candeia Gurjao > <ecand...@dee.ufcg.edu.br> wrote: > > Hi, > > > > there is a patch in the mailing list to this problem in the patch mailing > > list > http://lists.gnu.org/archive/html/patch-gnuradio/2011-07/msg00001.html > > > > I have aplied and it works, > > > > Edmar > > > This patch was applied to the code in the tree. Is it not working? > > Tom > > > > > 2011/7/29 niaz ahmed <niaa...@gmail.com> > >> > >> Hi, > >> > >> I am working on an application ( half duplex communication ) where i > have > >> two flow graphs receiver and transmitter. the scenario is that the > receiver > >> should always be running but when the application require to send > something > >> the receiver flow-graph should be stopped at that time. the reason for > the > >> receiver flow-graph to be stopped is obvious that it should not receive > the > >> data it is sending. i am using laptop sound card (not usrp). > >> > >> i am trying to stop the receiver and start it once the transmitter queue > >> becomes empty but i am getting the following error when i restart the > graph > >> > >> audio_alsa_source[plughw:0,0]: snd_pcm_hw_params failed: File descriptor > >> in bad state > >> > >> > >> > >> > >> > >> > >> class receive_graph(gr.top_block): > >> > >> def __init__(self): > >> gr.top_block.__init__(self) > >> > >> self.rcvd_pktq = gr.msg_queue() > >> > >> # > >> #some processing blocks here > >> # > >> > >> self.connect(src,//blocks//,sink) > >> > >> > >> class transmit_graph(gr.top_block): > >> > >> def __init__(self): > >> gr.top_block.__init__(self) > >> audio_rate =8000 > >> self.src = gr.message_source(gr.sizeof_char, msgq_limit) > >> > >> # > >> #some processing blocks here > >> # > >> > >> speaker = audio.sink(audio_rate, "plughw:0,0"); > >> self.connect(src,//blocks//,speaker) > >> > >> > >> > >> > >> > >> if __name__ == '__main__': > >> try: > >> fg1 = freceive_graph() > >> fg1.start() > >> fg= transmit_graph() > >> fg.start() > >> > >> try: > >> > >> > >> > >> while True: > >> message = raw_input("Enter a message to transmit (Ctrl-D to > >> exit): ") > >> fg1.stop() #here i am stopping the receiver > >> graph > >> # > >> # here i am making pkt from the message > >> # > >> fg.src.msgq().insert_tail(pkt) > >> if fg.src.msgq().empty_p(): > >> fg1.start() > >> > >> > >> except EOFError: > >> print "\nExiting." > >> fg.src.msgq().insert_tail(gr.message(1)) > >> fg.wait() > >> > >> > >> > >> > >> > >> > >> > >> > >> > >> # Main python entry > >> > >> except KeyboardInterrupt: > >> pass > >> > >> > >> > >> > >> > >> -- > >> Niaz Ahmed > >> > >> > >> > >> “We are always more anxious to be distinguished for a talent which we do > >> not possess, than to be praised for the fifteen which we do possess” > : > >> Mark Twain > >> > >> > >> > >> _______________________________________________ > >> Discuss-gnuradio mailing list > >> Discuss-gnuradio@gnu.org > >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >> > > > > > > > > -- > > --------------- > > Edmar Candeia Gurjão > > Universidade Federal de Campina Grande. > > +55 83 2101 1403 > > http://ecandeia.dee.ufcg.edu.br > > http://pet.ee.ufcg.edu.br/ > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > -- --------------- Edmar Candeia Gurjão Universidade Federal de Campina Grande. +55 83 2101 1403 http://ecandeia.dee.ufcg.edu.br http://pet.ee.ufcg.edu.br/
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