How did you resolve your problem? I have the same problem and reading your post I cannot understand the solution of your one.
Thanks in advance blwfsoj wrote: > > Hi all, > Before i start telling about my problem, i want to mention that i have > already read the post named "help: cannot send after transport endpoint > shutdown" which is very close to my problem but i could not solve it. > > I'm trying to transmit from the usrp port A, and then make it receive at > the same port using "Auto T/R" which i expressed by typing "-v" (isn't it > correct) after the benchmark. > but some time it works and most of the times its not (not stable), when > its not working it shows me the following error: > .o...@vecon3:~/Documents/abbasi/programmitx.py -f 1200000000 -m dbpsk -v > --tx-amplitude=0.08 -T A >>>> gr_fir_ccf: using SSE > > Modulator: > bits per symbol: 1 > Gray code: True > RRC roll-off factor: 0.35 > Tx amplitude 0.08 > modulation: dbpsk_mod > bitrate: 100kb/s > samples/symbol: 2 > USRP Sink: A: Flex 1200 Tx MIMO B > Requested TX Bitrate: 100k Actual Bitrate: 125k > Warning: failed to enable realtime scheduling > ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................o...@vecon3:~/Documents/abbasi/programmirx.py > -f 1200000000 -m dbpsk -v >>>> gr_fir_ccf: using SSE > > Demodulator: > bits per symbol: 1 > Gray code: True > RRC roll-off factor: 0.35 > Costas Loop alpha: 1.50e-01 > Costas Loop beta: 5.62e-03 > M&M mu: 0.50 > M&M mu gain: 1.00e-01 > M&M omega: 2.00 > M&M omega gain: 2.50e-03 > M&M omega limit: 0.01 > > Receive Path: > modulation: dbpsk_demod > bitrate: 100kb/s > samples/symbol: 2 > usrp_open_interface:usb_claim_interface: failed interface 2 > could not claim interface 2: Device or resource busy > usrp_basic_rx: can't open rx interface > Traceback (most recent call last): > File "mybenchmark_rx.py", line 112, in <module> > main() > File "mybenchmark_rx.py", line 101, in main > tb = my_top_block(demods[options.modulation], rx_callback, options) > File "mybenchmark_rx.py", line 45, in __init__ > self.rxpath = usrp_receive_path.usrp_receive_path(demodulator, > rx_callback, options) > File > "/home/onur/Documents/abbasi/programming/examples/digital/usrp_receive_path.py", > line 68, in __init__ > self._setup_usrp_source(options) > File > "/home/onur/Documents/abbasi/programming/examples/digital/usrp_receive_path.py", > line 73, in _setup_usrp_source > self.u = usrp_options.create_usrp_source(options) > File > "/home/onur/Documents/abbasi/programming/examples/digital/usrp_options.py", > line 88, in create_usrp_source > gain=options.rx_gain, > File > "/home/onur/Documents/abbasi/programming/examples/digital/generic_usrp.py", > line 144, in __init__ > _generic_usrp_base.__init__(self, **kwargs) > File > "/home/onur/Documents/abbasi/programming/examples/digital/generic_usrp.py", > line 63, in __init__ > except: raise Exception, 'Failed to automatically setup a usrp > device.' > Exception: Failed to automatically setup a usrp device. > o...@vecon3:~/Documents/abbasi/programming/examples/digital$ > > ON THE OTHER HAND: > when i try the full duplex (use a slot from block A as transmitter and > slot from block B as receiver) it also doesnot work. it will not be able > to setup the interface. > > i appreciate your help, > regards, > > -- View this message in context: http://old.nabble.com/Full-duplex-and-half-duplex-doesnot-work-tp27226209p30338716.html Sent from the GnuRadio mailing list archive at Nabble.com. _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
