[Discuss-gnuradio] FPGA mods

[Dan Halperin]

Hi,

I'm working on FPGA mods to push a little bit of work off of the 
computer onto the USRP's FPGA. If I understand correctly, the right way 
to do what I want is to create a new config file (e.g. a modification of 
usrp_std_config_2rxhb_2tx.vh) with my changes in the defines.

First, the comment: "// IF RX_ON is not defined, there is *no* transmit 
circuitry built" -- that should be `receive circuitry', yes?

Second, in what applications are multiple receive and transmit channels 
are used? They aren't used in tunnel.py right? I want to be doing RX and 
TX on the RFX2400 as in tunnel.py; this application only uses one RX and 
one TX channel, so I can define RX_SINGLE and TX_SINGLE instead of the 
DUAL versions?

Thanks,

Dan