I am using the USRP and need to receive the output from the FPGA over
pins on the BasicRX board rather than through USB. I need to send these
signals to another FPGA board I am using on which I am running a Java
processor. I’d like to avoid going via USB as I do not have a USB
interface on this second board. I understand that the FPGA already sends
the output signal from the FPGA over 16 pins on the RX board - I’m
guessing that this is the I/Q complex number generated by the FPGA.
However, because of the different clocks on the 2 boards, I need some
sort of handshaking protocol. I therefore decided that I’ll try to send
the signals over RS232.
I notice that there is an RS232 on the BasicRX board but I understand
from the schematics that this is not connected to the FPGA but to the
BasicTX board. I don’t understand why this is so. Am I correct in
saying that there is no UART core on the FPGA sending the signal to the
two pins on the BasicRX board?
I guess I could put a UART core on the USRP FPGA myself and output the
RX and TX signals on a pair of pins. Has anyone attempted to do this
Any help would be much appreciated.