Hello, I'm trying to understand the flow control between the USRP2 and host machine. I assume that it needs to be worked out where the USRP2 will always have a constant stream of uninterrupted radio data when sending and receiving (unless a more complex radio is in place which allows the signal to drop).
I have read that overruns are not really an issue, is this due to the processing power/throughput of the spartan 3 vs the host processor? I see that pause frames are used to help with flow control but I can only see this being used if an overrun or full fifo has occured on the USRP2, what happens if the fifo becomes empty? I'm trying to catch the pause frames with tcp dump and i'm either doing it wrong or they are not happening. I have tried usrp2_siggen and usrp2_fft. I'm using the dev code from git on ubuntu 9.04 with gnuradio 3.2.2 We are either overflowing, underflowing, or are perfectly in sync. Only overflow with pause frames to control makes sense to me. If this is not the case an explanation would be very much appreciated. Charles _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
