I've got a USRP X310, currently with just one daughterboard, a WBX-120. I'm writing some C which needs to operate the radio full duplex - I receive on RF A RX2 and transmit on RF A TX/RX.
But I'm confused as to how I identify which number channels I use, because I was under the impression that the function
uhd_usrp_set_tx_subdev_spec essentially attached my TX path to a particular channel. So if I call
uhd_usrp_set_rx_subdev_spec and then
A:0 as the subdevice, am I getting RX on channel 0 and TX on channel 1, or am I getting both on channel 0?
What happens when I add the second daughterboard, to be an SBX-120? In pseudocode I will be calling:
uhd_usrp_set_rx_subdev_spec("A:0") uhd_usrp_set_tx_subdev_spec("A:0") uhd_usrp_set_rx_subdev_spec("B:0") uhd_usrp_set_tx_subdev_spec("B:0")
Will these then be channels 0, 1, 2, 3? What happens if I change the order of calling