<?xml version='1.0' encoding='ASCII'?> <flow_graph> <timestamp>Thu Jun 25 10:56:04 2009</timestamp> <block> <key>options</key> <param> <key>id</key> <value>variable_config_demo</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>title</key> <value>Variable Config Block Demonstration</value> </param> <param> <key>author</key> <value>Example</value> </param> <param> <key>description</key> <value>Save/Load freq from a config file.</value> </param> <param> <key>window_size</key> <value>1280, 1024</value> </param> <param> <key>generate_options</key> <value>wx_gui</value> </param> <param> <key>category</key> <value>Custom</value> </param> <param> <key>autostart</key> <value>True</value> </param> <param> <key>realtime_scheduling</key> <value></value> </param> <param> <key>_coordinate</key> <value>(10, 10)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable</key> <param> <key>id</key> <value>samp_rate</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>32000</value> </param> <param> <key>_coordinate</key> <value>(10, 170)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_config</key> <param> <key>id</key> <value>freq_init</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>value</key> <value>1000</value> </param> <param> <key>type</key> <value>real</value> </param> <param> <key>config_file</key> <value>config.conf</value> </param> <param> <key>section</key> <value>main</value> </param> <param> <key>option</key> <value>freq</value> </param> <param> <key>writeback</key> <value>freq</value> </param> <param> <key>_coordinate</key> <value>(255, 17)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>variable_slider</key> <param> <key>id</key> <value>freq</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>label</key> <value>Frequency (Hz)</value> </param> <param> <key>value</key> <value>freq_init</value> </param> <param> <key>min</key> <value>-samp_rate/2</value> </param> <param> <key>max</key> <value>samp_rate/2</value> </param> <param> <key>num_steps</key> <value>100</value> </param> <param> <key>style</key> <value>wx.SL_HORIZONTAL</value> </param> <param> <key>converver</key> <value>float_converter</value> </param> <param> <key>grid_pos</key> <value></value> </param> <param> <key>_coordinate</key> <value>(429, 24)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_throttle</key> <param> <key>id</key> <value>gr_throttle_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>samples_per_second</key> <value>samp_rate</value> </param> <param> <key>vlen</key> <value>1</value> </param> <param> <key>_coordinate</key> <value>(392, 233)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>gr_sig_source_x</key> <param> <key>id</key> <value>gr_sig_source_x_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>samp_rate</key> <value>samp_rate</value> </param> <param> <key>waveform</key> <value>gr.GR_COS_WAVE</value> </param> <param> <key>freq</key> <value>freq</value> </param> <param> <key>amp</key> <value>1</value> </param> <param> <key>offset</key> <value>0</value> </param> <param> <key>_coordinate</key> <value>(148, 233)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <block> <key>wxgui_fftsink2</key> <param> <key>id</key> <value>wxgui_fftsink2_0</value> </param> <param> <key>_enabled</key> <value>True</value> </param> <param> <key>type</key> <value>complex</value> </param> <param> <key>title</key> <value>FFT Plot</value> </param> <param> <key>samp_rate</key> <value>samp_rate</value> </param> <param> <key>baseband_freq</key> <value>0</value> </param> <param> <key>y_per_div</key> <value>10</value> </param> <param> <key>y_divs</key> <value>10</value> </param> <param> <key>ref_level</key> <value>50</value> </param> <param> <key>fft_size</key> <value>1024</value> </param> <param> <key>fft_rate</key> <value>30</value> </param> <param> <key>peak_hold</key> <value>False</value> </param> <param> <key>average</key> <value>False</value> </param> <param> <key>avg_alpha</key> <value>0</value> </param> <param> <key>grid_pos</key> <value></value> </param> <param> <key>_coordinate</key> <value>(671, 233)</value> </param> <param> <key>_rotation</key> <value>0</value> </param> </block> <connection> <source_block_id>gr_sig_source_x_0</source_block_id> <sink_block_id>gr_throttle_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> <connection> <source_block_id>gr_throttle_0</source_block_id> <sink_block_id>wxgui_fftsink2_0</sink_block_id> <source_key>0</source_key> <sink_key>0</sink_key> </connection> </flow_graph>