add non-gui version of AIS transmitter script

ais_tx_laforge_nogui.py

@@ -0,0 +1,102 @@
+#!/usr/bin/env python
+##################################################
+# Gnuradio Python Flow Graph
+# Title: Top Block
+# Generated: Wed Apr  1 18:19:41 2015
+##################################################
+
+from gnuradio import analog
+from gnuradio import blocks
+from gnuradio import digital
+from gnuradio import eng_notation
+from gnuradio import gr
+from gnuradio import uhd
+from gnuradio.eng_option import eng_option
+from gnuradio.filter import firdes
+from optparse import OptionParser
+import AISTX
+import time
+import wx
+
+class top_block(gr.top_block):
+
+    def __init__(self):
+        gr.top_block.__init__(self)
+        ##################################################
+        # Variables
+        ##################################################
+        self.samp_rate = samp_rate = 326531
+        self.channel_select = channel_select = 1
+        self.bit_rate = bit_rate = 9600
+
+        ##################################################
+        # Blocks
+        ##################################################
+        self.uhd_usrp_sink_0 = uhd.usrp_sink(
+        	",".join(("", "")),
+        	uhd.stream_args(
+        		cpu_format="fc32",
+        		channels=range(1),
+        	),
+        )
+        self.uhd_usrp_sink_0.set_subdev_spec("A:A", 0)
+        self.uhd_usrp_sink_0.set_samp_rate(samp_rate)
+        self.uhd_usrp_sink_0.set_center_freq(162000000, 0)
+        self.uhd_usrp_sink_0.set_gain(0, 0)
+        self.uhd_usrp_sink_0.set_antenna("TX/RX", 0)
+        self.digital_gmsk_mod_0_0 = digital.gmsk_mod(
+        	samples_per_symbol=int(samp_rate/bit_rate),
+        	bt=0.4,
+        	verbose=False,
+        	log=False,
+        )
+        self.blocks_socket_pdu_0 = blocks.socket_pdu("TCP_SERVER", "", "52001", 10000, False)
+        self.blocks_pdu_to_tagged_stream_0 = blocks.pdu_to_tagged_stream(blocks.byte_t, "packet_len")
+        self.blocks_multiply_xx_0_0 = blocks.multiply_vcc(1)
+        self.blocks_multiply_const_vxx_0_1_0 = blocks.multiply_const_vcc((0.9, ))
+        self.analog_sig_source_x_0_0 = analog.sig_source_c(samp_rate, analog.GR_SIN_WAVE, 25000, 255, 0)
+        self.AisEncoder_0 = AISTX.AisEncoder(True, 256)
+
+        ##################################################
+        # Connections
+        ##################################################
+        self.connect((self.analog_sig_source_x_0_0, 0), (self.blocks_multiply_xx_0_0, 1))
+        self.connect((self.blocks_multiply_xx_0_0, 0), (self.blocks_multiply_const_vxx_0_1_0, 0))
+        self.connect((self.digital_gmsk_mod_0_0, 0), (self.blocks_multiply_xx_0_0, 0))
+        self.connect((self.blocks_multiply_const_vxx_0_1_0, 0), (self.uhd_usrp_sink_0, 0))
+        self.connect((self.blocks_pdu_to_tagged_stream_0, 0), (self.digital_gmsk_mod_0_0, 0))
+
+        ##################################################
+        # Asynch Message Connections
+        ##################################################
+        self.msg_connect(self.blocks_socket_pdu_0, "pdus", self.AisEncoder_0, "pdus")
+        self.msg_connect(self.AisEncoder_0, "pdus", self.blocks_pdu_to_tagged_stream_0, "pdus")
+
+
+    def get_samp_rate(self):
+        return self.samp_rate
+
+    def set_samp_rate(self, samp_rate):
+        self.samp_rate = samp_rate
+        self.analog_sig_source_x_0_0.set_sampling_freq(self.samp_rate)
+        self.uhd_usrp_sink_0.set_samp_rate(self.samp_rate)
+
+    def get_channel_select(self):
+        return self.channel_select
+
+    def set_channel_select(self, channel_select):
+        self.channel_select = channel_select
+
+    def get_bit_rate(self):
+        return self.bit_rate
+
+    def set_bit_rate(self, bit_rate):
+        self.bit_rate = bit_rate
+
+if __name__ == '__main__':
+    parser = OptionParser(option_class=eng_option, usage="%prog: [options]")
+    (options, args) = parser.parse_args()
+    tb = top_block()
+    tb.start()
+    raw_input('Press Enter to quit: ')
+    tb.stop()