I am in the process of hacking up the usrp2 host and firmware to support two receiver channels. I'm at the point where "start_rx_streaming" is being acknowledged for channel 1 but there is no data being returned for that channel. I don't actually understand yet where the receiver data is packaged to be sent over the ethernet (I haven't really looked into that yet) but I have been trying to understand how which receiver channel is selected...
I'm guessing that the bits in rx_mux in dsp_rx_regs_t are used to connect one of two DACs to one (or two?) inputs of the digital down converter. I note that the current setting of rx_mux is 0x44444444 which I am guessing (based on the comments in memory_map.h) could mean "constant 0" for one input and "DAC A" for the other input to the DDC... Am I interpreting that correctly? Can anyone give me some hints as to what the setting would be if I want to enable both channels? Any other insights as to how to access both channels in the USRP2 firmware? -Tom _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
