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Diffstat (limited to 'host/docs/usrp2.rst')
| -rw-r--r-- | host/docs/usrp2.rst | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/host/docs/usrp2.rst b/host/docs/usrp2.rst index d81440b07..bf42e70b9 100644 --- a/host/docs/usrp2.rst +++ b/host/docs/usrp2.rst @@ -315,6 +315,55 @@ the following clock configuration must be set on the slave device: clock_config.pps_source = uhd::clock_config_t::PPS_MIMO; usrp->set_clock_config(clock_config, slave_index); + +------------------------------------------------------------------------ +Alternative stream destination +------------------------------------------------------------------------ +It is possible to program the USRP to send RX packets to an alternative IP/UDP destination. + +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +Set the subnet and gateway +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +To use an alternative streaming destination, +the device needs to be able to determine if the destination address +is within its subnet, and ARP appropriately. +Therefore, the user should ensure that subnet and gateway addresses +have been programmed into the device's EEPROM. + +Run the following commands: +:: + + cd <install-path>/share/uhd/utils + ./usrp_burn_mb_eeprom --args=<optional device args> --key=subnet --val=255.255.255.0 + ./usrp_burn_mb_eeprom --args=<optional device args> --key=gateway --val=192.168.10.1 + +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +Create a receive streamer +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ +Set the stream args "addr" and "port" values to the alternative destination. +Packets will be sent to this destination when the user issues a stream command. + +:: + + //create a receive streamer, host type does not matter + uhd::stream_args_t stream_args("fc32"); + + //resolvable address and port for a remote udp socket + stream_args.args["addr"] = "192.168.10.42"; + stream_args.args["port"] = "12345"; + + //create the streamer + uhd::rx_streamer::sptr rx_stream = usrp->get_rx_stream(stream_args); + + //issue stream command + uhd::stream_cmd_t stream_cmd(uhd::stream_cmd_t::STREAM_MODE_NUM_SAMPS_AND_DONE); + stream_cmd.num_samps = total_num_samps; + stream_cmd.stream_now = true; + usrp->issue_stream_cmd(stream_cmd); + +**Note:** +Calling recv() on this streamer object should yield a timeout. + ------------------------------------------------------------------------ Hardware setup notes ------------------------------------------------------------------------ |