diff options
| author | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
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| committer | jcorgan <jcorgan@221aa14e-8319-0410-a670-987f0aec2ac5> | 2006-08-03 04:51:51 +0000 |
| commit | 5d69a524f81f234b3fbc41d49ba18d6f6886baba (patch) | |
| tree | b71312bf7f1e8d10fef0f3ac6f28784065e73e72 /gnuradio-examples/python/usrp/test_digital_loopback_lfsr.py | |
Houston, we have a trunk.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5
Diffstat (limited to 'gnuradio-examples/python/usrp/test_digital_loopback_lfsr.py')
| -rwxr-xr-x | gnuradio-examples/python/usrp/test_digital_loopback_lfsr.py | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/gnuradio-examples/python/usrp/test_digital_loopback_lfsr.py b/gnuradio-examples/python/usrp/test_digital_loopback_lfsr.py new file mode 100755 index 0000000000..ae78c71439 --- /dev/null +++ b/gnuradio-examples/python/usrp/test_digital_loopback_lfsr.py @@ -0,0 +1,62 @@ +#!/usr/bin/env python +# +# Copyright 2004 Free Software Foundation, Inc. +# +# This file is part of GNU Radio +# +# GNU Radio is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2, or (at your option) +# any later version. +# +# GNU Radio is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with GNU Radio; see the file COPYING. If not, write to +# the Free Software Foundation, Inc., 59 Temple Place - Suite 330, +# Boston, MA 02111-1307, USA. +# + +""" +Digital loopback (Tx to Rx) for the USRP Rev1. +""" + +from gnuradio import gr +from gnuradio import usrp + + +def build_graph (): + tx_interp = 32 # tx should be twice rx + rx_decim = 16 + + fg = gr.flow_graph () + + data_src = gr.lfsr_32k_source_s () + + # usrp_tx = usrp.sink_s (0, tx_interp, 1, 0x98) + usrp_tx = usrp.sink_s (0, tx_interp) + + fg.connect (data_src, usrp_tx) + + usrp_rx = usrp.source_s (0, rx_decim, 1, 0x32103210, usrp.FPGA_MODE_LOOPBACK) + + sink = gr.check_lfsr_32k_s () + fg.connect (usrp_rx, sink) + + # file_sink = gr.file_sink (gr.sizeof_short, "loopback.dat") + # fg.connect (usrp_rx, file_sink) + + return fg + +def main (): + fg = build_graph () + try: + fg.run() + except KeyboardInterrupt: + pass + +if __name__ == '__main__': + main () |