On Mon, Dec 21, 2009 at 03:31:23PM -0800, Jung Il Choi wrote: > Hi, > > I am using ucla-zigbee stack for continuously transmitting a fixed > symbol (all zeroes) for 802.15.4. > I finally made it to work on USRP2 with RFX2400, but now my > machine's kernel freezes after 5~10 minutes (even no ping > responses). Basically, using sig_source I generate a stream of a > constant 0's, and feed it to 802.15.4 modulator to transmit O-QPSK > signal. > > When I do packetized transmissions once a second, I do not see the > freezing problem. I only see this when I continuously transmit. > > Does anyone has any clue/suggestion? I am using Ubuntu 8.04 with the > kernel 2.6.24-21, and using D-Link DGE-560T gigabit pci-express > adapter. > Thanks, > Jung Il Choi
Is there a switch between your machine and the USRP2? If you type $ ethtool -a eth0 what does it display? (assuming eth0 is the interface the usrp2 is connected to) I would expect: $ ethtool -a eth1 Pause parameters for eth1: Autonegotiate: on RX: on TX: off Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
