fixed problem where last packet doesn't show up in pcap

workspace/wifi_loopback_noGUI.grc

@@ -230,7 +230,7 @@
     </param>
     <param>
       <key>_coordinate</key>
-      <value>(296, 313)</value>
+      <value>(272, 313)</value>
     </param>
     <param>
       <key>_rotation</key>
@@ -455,11 +455,11 @@ Else: 0</value>
     </param>
     <param>
       <key>pad_front</key>
-      <value>500</value>
+      <value>1000</value>
     </param>
     <param>
       <key>pad_tail</key>
-      <value>0</value>
+      <value>1000</value>
     </param>
   </block>
   <block>

workspace/wifi_loopback_noGUI.py

@@ -3,7 +3,7 @@
 ##################################################
 # GNU Radio Python Flow Graph
 # Title: Wifi Loopback Nogui
-# Generated: Tue Nov  3 15:44:35 2015
+# Generated: Tue Nov  3 19:25:31 2015
 ##################################################
 
 import os
@@ -26,18 +26,18 @@ import pmt
 
 class wifi_loopback_noGUI(gr.top_block):
 
-    def __init__(self, nmessages=50, chan_est=1, snr=10, freq_offset=0, encoding=0, interval=500):
+    def __init__(self, chan_est=1, encoding=0, freq_offset=0, interval=500, nmessages=50, snr=10):
         gr.top_block.__init__(self, "Wifi Loopback Nogui")
 
         ##################################################
         # Parameters
         ##################################################
-        self.nmessages = nmessages
         self.chan_est = chan_est
-        self.snr = snr
-        self.freq_offset = freq_offset
         self.encoding = encoding
+        self.freq_offset = freq_offset
         self.interval = interval
+        self.nmessages = nmessages
+        self.snr = snr
 
         ##################################################
         # Variables
@@ -54,7 +54,7 @@ class wifi_loopback_noGUI(gr.top_block):
         self.ieee802_11_ofdm_mac_0 = ieee802_11.ofdm_mac(([0x23, 0x23, 0x23, 0x23, 0x23, 0x23]), ([0x42, 0x42, 0x42, 0x42, 0x42, 0x42]), ([0xff, 0xff, 0xff, 0xff, 0xff, 0xff]))
         self.foo_wireshark_connector_0 = foo.wireshark_connector(127, False)
         self.foo_periodic_msg_source_0 = foo.periodic_msg_source(pmt.intern("Hello World!"), interval, nmessages, True, False)
-        self.foo_packet_pad2_0 = foo.packet_pad2(False, False, 0.001, 500, 0)
+        self.foo_packet_pad2_0 = foo.packet_pad2(False, False, 0.001, 1000, 1000)
         (self.foo_packet_pad2_0).set_min_output_buffer(96000)
         self.channels_channel_model_0 = channels.channel_model(
         	noise_voltage=.5**.5,
@@ -83,13 +83,6 @@ class wifi_loopback_noGUI(gr.top_block):
         self.connect((self.wifi_phy_hier_0, 1), (self.blocks_null_sink_0, 0))    
         self.connect((self.wifi_phy_hier_0, 0), (self.foo_packet_pad2_0, 0))    
 
-    def get_nmessages(self):
-        return self.nmessages
-
-    def set_nmessages(self, nmessages):
-        self.nmessages = nmessages
-        self.blocks_file_sink_0_0.open("/tmp/ofdm_n" + str(self.nmessages) + "_s" + str(self.snr) + "_e" + str(self.encoding) + "_i" + str(self.interval) + ".pcap")
-
     def get_chan_est(self):
         return self.chan_est
 
@@ -97,13 +90,13 @@ class wifi_loopback_noGUI(gr.top_block):
         self.chan_est = chan_est
         self.wifi_phy_hier_0.set_chan_est(self.chan_est)
 
-    def get_snr(self):
+    def get_encoding(self):
-        return self.snr
+        return self.encoding
 
-    def set_snr(self, snr):
+    def set_encoding(self, encoding):
-        self.snr = snr
+        self.encoding = encoding
-        self.blocks_multiply_const_vxx_0.set_k(((10**(self.snr/10.0))**.5, ))
         self.blocks_file_sink_0_0.open("/tmp/ofdm_n" + str(self.nmessages) + "_s" + str(self.snr) + "_e" + str(self.encoding) + "_i" + str(self.interval) + ".pcap")
+        self.wifi_phy_hier_0.set_encoding(self.encoding)
 
     def get_freq_offset(self):
         return self.freq_offset
@@ -112,14 +105,6 @@ class wifi_loopback_noGUI(gr.top_block):
         self.freq_offset = freq_offset
         self.channels_channel_model_0.set_frequency_offset(self.freq_offset)
 
-    def get_encoding(self):
-        return self.encoding
-
-    def set_encoding(self, encoding):
-        self.encoding = encoding
-        self.wifi_phy_hier_0.set_encoding(self.encoding)
-        self.blocks_file_sink_0_0.open("/tmp/ofdm_n" + str(self.nmessages) + "_s" + str(self.snr) + "_e" + str(self.encoding) + "_i" + str(self.interval) + ".pcap")
-
     def get_interval(self):
         return self.interval
 
@@ -127,6 +112,21 @@ class wifi_loopback_noGUI(gr.top_block):
         self.interval = interval
         self.blocks_file_sink_0_0.open("/tmp/ofdm_n" + str(self.nmessages) + "_s" + str(self.snr) + "_e" + str(self.encoding) + "_i" + str(self.interval) + ".pcap")
 
+    def get_nmessages(self):
+        return self.nmessages
+
+    def set_nmessages(self, nmessages):
+        self.nmessages = nmessages
+        self.blocks_file_sink_0_0.open("/tmp/ofdm_n" + str(self.nmessages) + "_s" + str(self.snr) + "_e" + str(self.encoding) + "_i" + str(self.interval) + ".pcap")
+
+    def get_snr(self):
+        return self.snr
+
+    def set_snr(self, snr):
+        self.snr = snr
+        self.blocks_file_sink_0_0.open("/tmp/ofdm_n" + str(self.nmessages) + "_s" + str(self.snr) + "_e" + str(self.encoding) + "_i" + str(self.interval) + ".pcap")
+        self.blocks_multiply_const_vxx_0.set_k(((10**(self.snr/10.0))**.5, ))
+
     def get_out_buf_size(self):
         return self.out_buf_size
 
@@ -136,24 +136,24 @@ class wifi_loopback_noGUI(gr.top_block):
 
 def argument_parser():
     parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
-    parser.add_option(
-        "-n", "--nmessages", dest="nmessages", type="intx", default=50,
-        help="Set nmessages [default=%default]")
     parser.add_option(
         "-c", "--chan-est", dest="chan_est", type="intx", default=1,
         help="Set chan_est [default=%default]")
-    parser.add_option(
-        "-s", "--snr", dest="snr", type="eng_float", default=eng_notation.num_to_str(10),
-        help="Set snr [default=%default]")
-    parser.add_option(
-        "-o", "--freq-offset", dest="freq_offset", type="eng_float", default=eng_notation.num_to_str(0),
-        help="Set freq_offset [default=%default]")
     parser.add_option(
         "-e", "--encoding", dest="encoding", type="intx", default=0,
         help="Set encoding [default=%default]")
+    parser.add_option(
+        "-o", "--freq-offset", dest="freq_offset", type="eng_float", default=eng_notation.num_to_str(0),
+        help="Set freq_offset [default=%default]")
     parser.add_option(
         "-i", "--interval", dest="interval", type="intx", default=500,
         help="Set interval [default=%default]")
+    parser.add_option(
+        "-n", "--nmessages", dest="nmessages", type="intx", default=50,
+        help="Set nmessages [default=%default]")
+    parser.add_option(
+        "-s", "--snr", dest="snr", type="eng_float", default=eng_notation.num_to_str(10),
+        help="Set snr [default=%default]")
     return parser
 
 
@@ -161,7 +161,7 @@ def main(top_block_cls=wifi_loopback_noGUI, options=None):
     if options is None:
         options, _ = argument_parser().parse_args()
 
-    tb = top_block_cls(nmessages=options.nmessages, chan_est=options.chan_est, snr=options.snr, freq_offset=options.freq_offset, encoding=options.encoding, interval=options.interval)
+    tb = top_block_cls(chan_est=options.chan_est, encoding=options.encoding, freq_offset=options.freq_offset, interval=options.interval, nmessages=options.nmessages, snr=options.snr)
     tb.start()
     tb.wait()