1 | #!/usr/bin/env python |
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2 | #Transmission and reception, one ata a time on the same antena |
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3 | |
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4 | from gnuradio import gr, gru, modulation_utils |
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5 | from gnuradio import eng_notation |
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6 | from gnuradio.eng_option import eng_option |
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7 | from optparse import OptionParser |
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8 | from numpy import random |
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9 | import random, time, struct, sys, math |
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10 | import traceback |
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11 | # from current dir |
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12 | from transmit_path import transmit_path |
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13 | from receive_path import receive_path |
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14 | |
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15 | class my_top_block(gr.top_block): |
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16 | |
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17 | def __init__(self, mod_class, demod_class, |
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18 | rx_callback, options_tx,options_rx): |
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19 | |
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20 | gr.top_block.__init__(self) |
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21 | self.rxpath = receive_path(demod_class, rx_callback, options_rx) |
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22 | self.txpath = transmit_path(mod_class, options_tx) |
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23 | self.connect(self.txpath); |
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24 | self.connect(self.rxpath); |
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25 | |
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26 | |
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27 | def main(): |
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28 | |
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29 | def rx_callback(ok, payload): |
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30 | #print "inside rx callback" |
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31 | global n_rcvd, n_right, sync_status,mode,hop_freq |
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32 | |
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33 | |
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34 | |
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35 | mods = modulation_utils.type_1_mods() |
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36 | demods = modulation_utils.type_1_demods() |
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37 | |
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38 | #setting up the tx options parser |
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39 | parser_tx = OptionParser(option_class=eng_option, conflict_handler="resolve") |
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40 | expert_grp_tx = parser_tx.add_option_group("Expert_tx") |
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41 | print "printing Expert_tx group",expert_grp_tx,"printing Expert_tx group" |
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42 | parser_tx.add_option("-m", "--modulation", type="choice", choices=mods.keys(), |
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43 | default='gmsk', |
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44 | help="Select modulation from: %s [default=%%default]" |
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45 | % (', '.join(mods.keys()),)) |
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46 | |
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47 | parser_tx.add_option("-s", "--size", type="eng_float", default=1500, |
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48 | help="set packet size [default=%default]") |
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49 | parser_tx.add_option("-M", "--megabytes", type="eng_float", default=1.0, |
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50 | help="set megabytes to transmit [default=%default]") |
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51 | parser_tx.add_option("","--discontinuous", action="store_true", default=False, |
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52 | help="enable discontinous transmission (bursts of 5 packets)") |
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53 | parser_tx.add_option("","--from-file", default=None, |
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54 | help="use file for packet contents") |
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55 | print "printing parser_tx",parser_tx,"printing parser_tx" |
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56 | transmit_path.add_options(parser_tx, expert_grp_tx) |
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57 | |
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58 | for mod in mods.values(): |
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59 | mod.add_options(expert_grp_tx) |
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60 | |
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61 | (options_tx, args_tx) = parser_tx.parse_args () |
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62 | |
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63 | if len(args_tx) != 0: |
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64 | parser_tx.print_help() |
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65 | sys.exit(1) |
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66 | ############# Setting some default values for tx side of the block |
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67 | options_tx.tx_freq = 462.5625e6 |
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68 | options_tx.samples_per_symbol = 2 |
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69 | options_tx.modulation = 'dbpsk' |
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70 | options_tx.fusb_block_size = 4096 |
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71 | options_tx.fusb_nblocks = 16 |
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72 | options_tx.bitrate = 0.0125e6 |
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73 | ############# |
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74 | if options_tx.tx_freq is None: |
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75 | sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") |
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76 | parser_tx.print_help(sys.stderr) |
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77 | sys.exit(1) |
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78 | |
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79 | if options_tx.from_file is not None: |
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80 | source_file = open(options_tx.from_file, 'r') |
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81 | print "printing modulation type",mods[options_tx.modulation],"**" |
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82 | # build the graph |
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83 | print "printing tx options",options_tx,"&&&&\n" |
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84 | #tb = my_top_block(mods[options_tx.modulation], options_tx) |
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85 | |
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86 | #r = gr.enable_realtime_scheduling() |
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87 | #if r != gr.RT_OK: |
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88 | # print "Warning: failed to enable realtime scheduling" |
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89 | |
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90 | #setting up rx options parser |
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91 | |
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92 | # Create Options Parser: |
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93 | parser_rx = OptionParser (option_class=eng_option, conflict_handler="resolve") |
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94 | print "printing parser_rx",parser_rx,"!!!!!\n" |
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95 | print "after option parser" |
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96 | expert_grp_rx = parser_rx.add_option_group("Expert_rx") |
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97 | print "printing expert group rx",expert_grp_rx,"@@@@\n" |
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98 | parser_rx.add_option("-m", "--modulation", type="choice", choices=demods.keys(), |
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99 | default='gmsk', |
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100 | help="Select modulation from: %s [default=%%default]" |
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101 | % (', '.join(demods.keys()),)) |
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102 | print "inside rx option parser" |
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103 | receive_path.add_options(parser_rx, expert_grp_rx) |
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104 | |
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105 | for mod in demods.values(): |
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106 | mod.add_options(expert_grp_rx) |
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107 | |
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108 | (options_rx, args_rx) = parser_rx.parse_args () |
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109 | |
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110 | if len(args_rx) != 0: |
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111 | parser_rx.print_help(sys.stderr) |
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112 | sys.exit(1) |
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113 | ############# Setting some default values for rx side of the block |
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114 | options_rx.rx_freq = 462.5625e6 #setting default rx_freq value |
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115 | options_rx.samples_per_symbol = 2 |
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116 | options_rx.modulation = 'dbpsk' |
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117 | options_rx.fusb_block_size = 4096 |
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118 | options_rx.fusb_nblocks = 16 |
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119 | options_rx.bitrate = 0.0125e6 |
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120 | ############# |
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121 | if options_rx.rx_freq is None: |
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122 | sys.stderr.write("You must specify -f FREQ or --freq FREQ\n") |
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123 | parser_rx.print_help(sys.stderr) |
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124 | sys.exit(1) |
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125 | print "printing rx options",options_rx,"&&&&\n" |
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126 | |
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127 | |
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128 | |
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129 | ######################## adding another top block for usrp spectrum sense ######################## |
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130 | #This is not needed anymore |
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131 | #trials = 10 |
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132 | |
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133 | #tb_spec_sense = spec_sense_top_block(default_min_freq,default_min_freq) |
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134 | #tb_spec_sense.subdev.select_rx_antenna('RX2') |
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135 | #tb_spec_sense.start() # start executing flow graph in another thread... |
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136 | #avg = tb_spec_sense.get_avg_power(trials) |
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137 | #print "printing the average power ",avg, "\n" |
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138 | #tb_spec_sense.stop() |
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139 | |
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140 | |
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141 | ################################################################################################## |
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142 | |
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143 | # build the graph |
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144 | |
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145 | tb = my_top_block(mods[options_tx.modulation], |
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146 | demods[options_rx.modulation], |
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147 | rx_callback,options_tx, |
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148 | options_rx) |
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149 | r = gr.enable_realtime_scheduling() |
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150 | if r != gr.RT_OK: |
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151 | print "Warning: failed to enable realtime scheduling" |
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152 | |
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153 | tb.start() |
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154 | hop_freq = 462.5625e6 |
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155 | while True: |
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156 | tb.rxpath.min_freq = hop_freq - 80e3 |
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157 | tb.rxpath.max_freq = hop_freq + 80e3 |
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158 | tb.rxpath.get_avg_power(10) |
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159 | |
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160 | |
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161 | |
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162 | |
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163 | |
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164 | |
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165 | if __name__ == '__main__': |
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166 | #try: |
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167 | main() |
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168 | #except KeyboardInterrupt: |
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169 | # pass |
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