Hi
I am having problems selecting the subdev with USRP1:
My USRP1 is populated with 2 LFRX and 2 LFTX.
I am trying the following code:
------------------------------------------
#!/usr/bin/python
from gnuradio import gr
from gnuradio import uhd
from gnuradio.eng_option import eng_option
class build_block(gr.top_block):
def __init__(self):
gr.top_block.__init__(self)
self.u_tx = uhd.usrp_sink("serial=47432785",uhd.stream_args('fc32'))
self.u_tx.set_samp_rate(8.0e6)
self.tx_src0 =
gr.sig_source_c(self.u_tx.get_samp_rate(),gr.GR_CONST_WAVE,0, 1.0, 0)
self.u_tx.set_center_freq(10e6)
# self.u_tx.set_subdev_spec("A:AB",0)
self.connect (self.tx_src0, self.u_tx)
def main ():
tb = build_block ()
tb.start ()
raw_input ('Press Enter to quit: ')
if __name__ == '__main__':
main ()
----------------------------------------
This way I get I- and Q- Signals out of TXB.
With the subdev_spec uncommented I get nothing - neither TXA, not TXB.
With self.u_tx.set_subdev_spec("B:AB",0) I again only get TXB.
What do I Have to configure to get signals only from TXA?
Thanks
Wolfgang
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