[Discuss-gnuradio] mutiple signals with the usrp

[Josh Blum]

Hello,

I am interested in sending and receiving multiple signals (2 or more?) 
with a single USRP.

It seems that to transmit 2 signals to different daughter boards you can 
interleave the signals, set up 2 subdevices, and do a 
self.u.set_mux(0xba98) (i pulled this from the fm_tx_2_daughterboards.py 
example).

I assume that receiving 2 signals would be very similar, perhaps a 
different hex value for set_mux?

What if I choose to transmit (or receive) those signals on 2 different 
subdevices of the same daughter board, is the code the same?

Transmitting and receiving at the same time using one USRP does not seem 
to fit into this model. Is the correct way to create a USRP source and 
sink in the same flow graph? This may or may not be obvious, but my 
initial attempt failed and I was already sore from trying to receive 2 
signals at once.

If someone can help me out or point me to examples (other than 
fm_tx_2_daughterboards.py), this would be great.

Thanks,
-Josh