4 files changed, 179 insertions, 1 deletions
diff --git a/gr-usrp2/Makefile.am b/gr-usrp2/Makefile.am
index f6120884a..895032fb0 100644
--- a/gr-usrp2/Makefile.am
+++ b/gr-usrp2/Makefile.am
@@ -21,7 +21,7 @@
 
 include $(top_srcdir)/Makefile.common
 
-SUBDIRS = src
+SUBDIRS = src apps
 
 if PYTHON
 SUBDIRS += grc
diff --git a/gr-usrp2/apps/.gitignore b/gr-usrp2/apps/.gitignore
new file mode 100644
index 000000000..b336cc7ce
--- /dev/null
+++ b/gr-usrp2/apps/.gitignore
@@ -0,0 +1,2 @@
+/Makefile
+/Makefile.in
diff --git a/gr-usrp2/apps/Makefile.am b/gr-usrp2/apps/Makefile.am
new file mode 100644
index 000000000..e1cec4cfc
--- /dev/null
+++ b/gr-usrp2/apps/Makefile.am
@@ -0,0 +1,32 @@
+#
+# Copyright 2011 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 3, 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., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+include $(top_srcdir)/Makefile.common
+
+EXTRA_DIST += \
+    $(bin_SCRIPTS)
+
+if PYTHON
+
+bin_SCRIPTS = \
+    usrp2_rx_cfile.py
+
+endif
diff --git a/gr-usrp2/apps/usrp2_rx_cfile.py b/gr-usrp2/apps/usrp2_rx_cfile.py
new file mode 100755
index 000000000..1f23eee4e
--- /dev/null
+++ b/gr-usrp2/apps/usrp2_rx_cfile.py
@@ -0,0 +1,144 @@
+#!/usr/bin/env python
+#
+# Copyright 2004,2005,2007,2008,2009 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 3, 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., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+"""
+Read samples from the USRP2 and write to file formatted as binary
+outputs single precision complex float values or complex short values 
+(interleaved 16 bit signed short integers).
+"""
+
+from gnuradio import gr, eng_notation
+from gnuradio import usrp2
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+import sys
+
+n2s = eng_notation.num_to_str
+
+class rx_cfile_block(gr.top_block):
+
+    def __init__(self, options, filename):
+        gr.top_block.__init__(self)
+
+        # Create a USRP2 source
+        if options.output_shorts:
+            self._u = usrp2.source_16sc(options.interface, options.mac_addr)
+            self._sink = gr.file_sink(gr.sizeof_short*2, filename)
+        else:
+            self._u = usrp2.source_32fc(options.interface, options.mac_addr)
+            self._sink = gr.file_sink(gr.sizeof_gr_complex, filename)
+
+        # Set receiver decimation rate
+        self._u.set_decim(options.decim)
+
+        # Set receive daughterboard gain
+        if options.gain is None:
+            g = self._u.gain_range()
+            options.gain = float(g[0]+g[1])/2
+	    print "Using mid-point gain of", options.gain, "(", g[0], "-", g[1], ")"
+        self._u.set_gain(options.gain)
+
+        # Set receive frequency
+        if options.lo_offset is not None:
+            self._u.set_lo_offset(options.lo_offset)
+
+        tr = self._u.set_center_freq(options.freq)
+        if tr == None:
+            sys.stderr.write('Failed to set center frequency\n')
+            raise SystemExit, 1
+
+        # Create head block if needed and wire it up
+        if options.nsamples is None:
+            self.connect(self._u, self._sink)
+        else:
+            if options.output_shorts:
+                self._head = gr.head(gr.sizeof_short*2, int(options.nsamples))
+            else:
+                self._head = gr.head(gr.sizeof_gr_complex, int(options.nsamples))
+
+            self.connect(self._u, self._head, self._sink)
+
+        input_rate = self._u.adc_rate()/self._u.decim()
+        
+        if options.verbose:
+            print "Network interface:", options.interface
+            print "USRP2 address:", self._u.mac_addr()
+            print "Using RX d'board id 0x%04X" % (self._u.daughterboard_id(),)
+            print "Rx gain:", options.gain
+            print "Rx baseband frequency:", n2s(tr.baseband_freq)
+            print "Rx DDC frequency:", n2s(tr.dxc_freq)
+            print "Rx residual frequency:", n2s(tr.residual_freq)
+            print "Rx decimation rate:", options.decim
+            print "Rx sample rate:", n2s(input_rate)
+            if options.nsamples is None:
+                print "Receiving samples until Ctrl-C"
+            else:
+                print "Receving", n2s(options.nsamples), "samples"
+            if options.output_shorts:
+                print "Writing 16-bit complex shorts"
+            else:
+                print "Writing 32-bit complex floats"
+            print "Output filename:", filename
+        
+def get_options():
+    usage="%prog: [options] output_filename"
+    parser = OptionParser(option_class=eng_option, usage=usage)
+    parser.add_option("-e", "--interface", type="string", default="eth0",
+                      help="use specified Ethernet interface [default=%default]")
+    parser.add_option("-m", "--mac-addr", type="string", default="",
+                      help="use USRP2 at specified MAC address [default=None]")  
+    parser.add_option("-d", "--decim", type="int", default=16,
+                      help="set fgpa decimation rate to DECIM [default=%default]")
+    parser.add_option("-f", "--freq", type="eng_float", default=None,
+                      help="set frequency to FREQ", metavar="FREQ")
+    parser.add_option("-g", "--gain", type="eng_float", default=None,
+                      help="set gain in dB (default is midpoint)")
+    parser.add_option( "-s","--output-shorts", action="store_true", default=False,
+                      help="output interleaved shorts instead of complex floats")
+    parser.add_option("-N", "--nsamples", type="eng_float", default=None,
+                      help="number of samples to collect [default=+inf]")
+    parser.add_option("-v", "--verbose", action="store_true", default=False,
+                      help="verbose output")
+    parser.add_option("", "--lo-offset", type="eng_float", default=None,
+                      help="set daughterboard LO offset to OFFSET [default=hw default]")
+
+    (options, args) = parser.parse_args ()
+    if len(args) != 1:
+        parser.print_help()
+        raise SystemExit, 1
+    
+    if options.freq is None:
+        parser.print_help()
+        sys.stderr.write('You must specify the frequency with -f FREQ\n');
+        raise SystemExit, 1
+    
+    return (options, args[0])
+
+
+if __name__ == '__main__':
+    (options, filename) = get_options()
+    tb = rx_cfile_block(options, filename)
+    
+    try:
+        tb.run()
+    except KeyboardInterrupt:
+        pass