[USRP-users] GRC Radio Block Receives no Data

Zhihong Luo zhluo at umich.edu
Fri Mar 18 17:17:29 EDT 2016


Hi all,

I am new to RFNoC and I tried to run a simple GRC using a RFNoC Radio and
scope sink. But there seems to be no outputs.

I assume Radio works exactly as USRP Source, so I am really confused. The
GRC' output is attached (didn't output errors). What am I missing?

Using Volk machine: sse4_2_64_orc
-- [0/Radio_0] _resolve_port_def()
-- [0/Radio_0]   item type: sc16
-- [0/Radio_0]   vector length: 0
-- [0/Radio_0]   packet size: 0
-- [0/Radio_0] _resolve_port_def()
-- [0/Radio_0]   item type: sc16
-- [0/Radio_0]   vector length: 0
-- [0/Radio_0]   packet size: 0
DEBUG: output item size: 8

DEBUG: check_topology()
DEBUG: RFNoC blocks with streaming ports: 1
DEBUG: start(): ninputs == 0 noutputs == 1
DEBUG: creating rx streamer with: block_id=0/Radio_0
-- [0/Radio_0] _resolve_port_def()
-- [0/Radio_0]   item type: sc16
-- [0/Radio_0]   vector length: 0
-- [0/Radio_0]   packet size: 0
-- [RX Streamer] creating rx stream recv_buff_size=33554432
-- [RX Streamer] data_sid = 00:08>02:30 actual recv_buff_size = 33554432
-- [0/Radio_0] radio_ctrl::set_destination()
--   Setting sid to 2.48>0.8
-- [RX Streamer] spp == 364
-- [RX Streamer] Flow Control Window = 20515, Flow Control Handler Window =
641
-- [0/Radio_0] radio_ctrl::configure_flow_control_out()20515
-- [RX Terminator 0] rx_stream_terminator::set_rx_streamer() 1
-- [0/Radio_0] radio_ctrl::set_rx_streamer() 1
-- [Device3] updating RX streamer to RX Terminator 0
--   New tick_rate == 2e+08  New samp_rate == 8e+06 New scaling ==
3.05187e-05
-- [0/Radio_0] radio_ctrl::issue_stream_cmd()
-- [0/Radio_0] radio_ctrl::issue_stream_cmd()
-- [RX Terminator 0] rx_stream_terminator::~rx_stream_terminator()
-- [RX Terminator 0] rx_stream_terminator::set_rx_streamer() 0
-- [0/Radio_0] radio_ctrl::set_rx_streamer() 0


Thanks,
Zhihong
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/attachments/20160318/a79c5981/attachment-0002.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Screenshot from 2016-03-18 16:55:14.png
Type: image/png
Size: 28720 bytes
Desc: not available
URL: <http://lists.ettus.com/pipermail/usrp-users_lists.ettus.com/attachments/20160318/a79c5981/attachment.png>


More information about the USRP-users mailing list