Hi Everyone: I am guessing that my last post was not clear since I didnt get any replies. So here I go again.
1. I am using two Flex900 daughter cards on a single USRP. 2. I am getting to select two subdevices (0,0) and (1,0) ie. daughter board A or daughter board B 3. On each subdevice I am getting to select two antennas 'TX/RX' and 'RX2' Now here is the thing. I can take anyone of the input at a single time, ie. I can either get a. subdevice(0,0) & antenna 'TX/RX' b. subdevice(0,0) & antenna 'RX2' c. subdevice(1,0) & antenna 'TX/RX' d. subdevice(1,0) & antenna 'RX2' That is I am getting to set the usrp mux with tb.src_usrp.set_mux(usrp.determine_rx_mux_value(tb.src_usrp, subdevice)) and then select and antenna for the subdevice tb.subdev.select_rx_antenna('RX2') But I need to build a graph where I can take at least two of the above mentioned inputs. And store them in two separate sinks if possible. Using two different sink_files. Would really really appreciate any help or some direction or hint. Thank you loads in advance. Here goes the code that I could do so far. ################################################################## #bring in blocks from the main gnu radio package from gnuradio import gr #bring in the USRP source/sink from gnuradio import usrp import sys from gnuradio import audio def build_graph(): #create the top block tb=gr.top_block() #creat the USRP source tb.src_usrp=usrp.source_c(decim_rate=16) #create a signal sink tb.sink_file = gr.file_sink(gr.sizeof_gr_complex, 'test89.dat') #create counter tb.count=gr.head(gr.sizeof_gr_complex, int(2000)) #connect the source to the sink tb.connect(tb.src_usrp,tb.count,tb.sink_file) #choose the sub device #subdev_spec = usrp.pick_rx_subdevice(tb.src_usrp) subdev_spec = (0,0) #subdev_spec = (1,0) #Set the mux tb.src_usrp.set_mux(usrp.determine_rx_mux_value(tb.src_usrp, subdev_spec)) #get the sub-device tb.subdev = usrp.selected_subdev(tb.src_usrp, subdev_spec) #select receive antenna ('TX/RX' or 'RX2') #tb.subdev.select_rx_antenna('TX/RX') tb.subdev.select_rx_antenna('RX2') #Set the gain g=tb.subdev.gain_range() gain=float(g[0]+g[1])/2 #gain= tb.subdev.set_gain(gain) #tune the center frequency frequency=float(948e6) tb.src_usrp.tune(0, tb.subdev, frequency) return tb if __name__ == '__main__': tb = build_graph () tb.start () ################################################################# Thank you loads again. Kind regards, Shabbir Ahmed PhD. Student Victoria University, Melbourne, AUS -- View this message in context: http://www.nabble.com/how-to-take-input-from-multiple-subdevices-in-the-USRP-simultaneously-tp22479958p22479958.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