1 files changed, 116 insertions, 0 deletions
diff --git a/gr-zeromq/examples/python/client.py b/gr-zeromq/examples/python/client.py
new file mode 100755
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+++ b/gr-zeromq/examples/python/client.py
@@ -0,0 +1,116 @@
+#
+# 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
+#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://*:6667"
+        probe_adr = "tcp://*:5557"
+        source_adr = "tcp://"+self.options.servername+":5555"
+
+        # blocks
+        self.zmq_source = zeromq.req_source(gr.sizeof_float, 1, source_adr)
+        #self.zmq_source = zeromq.pull_source(gr.sizeof_float, 1, source_adr)
+        #self.zmq_probe = zeromq.push_sink(gr.sizeof_float,probe_adr)
+        self.zmq_probe = zeromq.pub_sink(gr.sizeof_float,probe_adr)
+
+        # connects
+        self.connect(self.zmq_source, 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.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()
+
+###############################################################################
+# Options Parser
+###############################################################################
+def parse_options():
+    """ Options parser. """
+    parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
+    parser.add_option("-s", "--servername", type="string", default="localhost",
+                      help="Server hostname")
+    (options, args) = parser.parse_args()
+    return options
+
+###############################################################################
+# Waiter Thread
+###############################################################################
+class waiter(Thread):
+    """ To keep the program alive when flowgraph is stopped. """
+    def run(self):
+        while keep_running:
+            time.sleep(1)
+
+###############################################################################
+# 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