From ddb4c1d744b417e79cf2d263d6cd8db37c4dbcb2 Mon Sep 17 00:00:00 2001
From: Johnathan Corgan <johnathan@corganlabs.com>
Date: Tue, 6 May 2014 13:40:15 -0700
Subject: zeromq: cleanup docs and examples
---
gr-zeromq/examples/python/server.py | 125 ++++++++++++++++++++++++++++++++++++
1 file changed, 125 insertions(+)
create mode 100755 gr-zeromq/examples/python/server.py
(limited to 'gr-zeromq/examples/python/server.py')
diff --git a/gr-zeromq/examples/python/server.py b/gr-zeromq/examples/python/server.py
new file mode 100755
index 0000000000..28b732ed3e
--- /dev/null
+++ b/gr-zeromq/examples/python/server.py
@@ -0,0 +1,125 @@
+#
+# Copyright 2013 Free Software Foundation, Inc.
+#
+# This file is part of GNU Radio.
+#
+# This 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.
+#
+# This software 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 this software; see the file COPYING. If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+#
+
+###############################################################################
+# Imports
+###############################################################################
+from gnuradio import zeromq
+from gnuradio import gr
+from gnuradio import blocks
+from gnuradio import analog
+from gnuradio import eng_notation
+from gnuradio.eng_option import eng_option
+from optparse import OptionParser
+import numpy
+import sys
+from threading import Thread
+import time
+
+
+###############################################################################
+# GNU Radio top_block
+###############################################################################
+class top_block(gr.top_block):
+ def __init__(self, options):
+ gr.top_block.__init__(self)
+
+ self.options = options
+
+ # socket addresses
+ rpc_adr = "tcp://*:6666"
+ probe_adr = "tcp://*:5556"
+ sink_adr = "tcp://*:5555"
+
+ # the strange sampling rate gives a nice movement in the plot :P
+ self.samp_rate = samp_rate = 48200
+
+ # blocks
+ self.gr_sig_source = analog.sig_source_f(samp_rate, analog.GR_SIN_WAVE , 1000, 1, 0)
+ self.throttle = blocks.throttle(gr.sizeof_float, samp_rate)
+ self.mult = blocks.multiply_const_ff(1)
+ self.zmq_sink = zeromq.rep_sink(gr.sizeof_float, 1, sink_adr)
+ #self.zmq_sink = zeromq.push_sink(gr.sizeof_float, 1, sink_adr)
+ #self.zmq_probe = zeromq.push_sink(gr.sizeof_float, probe_adr)
+ self.zmq_probe = zeromq.pub_sink(gr.sizeof_float, probe_adr)
+ #self.null_sink = blocks.null_sink(gr.sizeof_float)
+
+ # connects
+ self.connect(self.gr_sig_source, self.mult, self.throttle, self.zmq_sink)
+ self.connect(self.throttle, self.zmq_probe)
+
+ # ZeroMQ
+ self.rpc_manager = zeromq.rpc_manager()
+ self.rpc_manager.set_reply_socket(rpc_adr)
+ self.rpc_manager.add_interface("start_fg",self.start_fg)
+ self.rpc_manager.add_interface("stop_fg",self.stop_fg)
+ self.rpc_manager.add_interface("set_waveform",self.set_waveform)
+ self.rpc_manager.add_interface("set_k",self.mult.set_k)
+ self.rpc_manager.add_interface("get_sample_rate",self.throttle.sample_rate)
+ self.rpc_manager.start_watcher()
+
+ def start_fg(self):
+ print "Start Flowgraph"
+ try:
+ self.start()
+ except RuntimeError:
+ print "Can't start, flowgraph already running!"
+
+ def stop_fg(self):
+ print "Stop Flowgraph"
+ self.stop()
+ self.wait()
+
+ def set_waveform(self, waveform_str):
+ waveform = {'Constant' : analog.GR_CONST_WAVE,
+ 'Sine' : analog.GR_SIN_WAVE,
+ 'Cosine' : analog.GR_COS_WAVE,
+ 'Square' : analog.GR_SQR_WAVE,
+ 'Triangle' : analog.GR_TRI_WAVE,
+ 'Saw Tooth' : analog.GR_SAW_WAVE}[waveform_str]
+ self.gr_sig_source.set_waveform(waveform)
+
+###############################################################################
+# Options Parser
+###############################################################################
+def parse_options():
+ """ Options parser. """
+ parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
+ (options, args) = parser.parse_args()
+ return options
+
+###############################################################################
+# Main
+###############################################################################
+if __name__ == "__main__":
+ options = parse_options()
+ tb = top_block(options)
+ try:
+ # keep the program running when flowgraph is stopped
+ while True:
+ time.sleep(1)
+ except KeyboardInterrupt:
+ pass
+ print "Shutting down flowgraph."
+ tb.rpc_manager.stop_watcher()
+ tb.stop()
+ tb.wait()
+ tb = None
--
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