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gr-osmosdr
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fix scaling in LUT generation

gr3.6
Dimitri Stolnikov 2012-04-06 15:58:12 +02:00
parent 0efd28de6b
commit 313334d54a
3 changed files with 93 additions and 93 deletions
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176
apps/osmosdr_source.grc
View File

@ -1,6 +1,6 @@
<?xml version='1.0' encoding='ASCII'?>
<flow_graph>
<timestamp>Fri Apr 6 14:59:58 2012</timestamp>
<timestamp>Fri Apr 6 15:57:44 2012</timestamp>
<block>
<key>options</key>
<param>
@ -169,93 +169,6 @@
<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>freq</value>
</param>
<param>
<key>y_per_div</key>
<value>5</value>
</param>
<param>
<key>y_divs</key>
<value>10</value>
</param>
<param>
<key>ref_level</key>
<value>145</value>
</param>
<param>
<key>ref_scale</key>
<value>2.0</value>
</param>
<param>
<key>fft_size</key>
<value>1024</value>
</param>
<param>
<key>fft_rate</key>
<value>15</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>win</key>
<value>None</value>
</param>
<param>
<key>win_size</key>
<value></value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(681, 242)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<block>
<key>variable_slider</key>
<param>
@ -311,6 +224,93 @@
<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>freq</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>0</value>
</param>
<param>
<key>ref_scale</key>
<value>2.0</value>
</param>
<param>
<key>fft_size</key>
<value>1024</value>
</param>
<param>
<key>fft_rate</key>
<value>15</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>win</key>
<value>None</value>
</param>
<param>
<key>win_size</key>
<value></value>
</param>
<param>
<key>grid_pos</key>
<value></value>
</param>
<param>
<key>notebook</key>
<value></value>
</param>
<param>
<key>_coordinate</key>
<value>(681, 242)</value>
</param>
<param>
<key>_rotation</key>
<value>0</value>
</param>
</block>
<connection>
<source_block_id>osmosdr_source_c_0</source_block_id>
<sink_block_id>wxgui_fftsink2_0</sink_block_id>

6
apps/osmosdr_source.py
View File

@ -38,10 +38,10 @@ class osmosdr_source_c(grc_wxgui.top_block_gui):
self.GetWin(),
fft_size=1024,
sample_rate=samp_rate,
ref_scale=50.0,
ref_level=145,
ref_scale=2.0,
ref_level=0,
y_divs=10,
fft_rate=20,
fft_rate=15,
average=False,
avg_alpha=0.5
)

4
lib/rtl_source_c.cc
View File

@ -79,8 +79,8 @@ rtl_source_c::rtl_source_c (const std::string &args)
// create a lookup table for gr_complex values
for (unsigned int i = 0; i <= 0xffff; i++)
{
_lut.push_back( gr_complex( ((i >> 8) - 127) * 0.00787,
((i & 0xff) - 127) * 0.00787 ) );
_lut.push_back( gr_complex( (float(i >> 8) - 127.0) * 0.00787,
(float(i & 0xff) - 127.0) * 0.00787 ) );
}
std::cout << "Opening " << rtlsdr_get_device_name(dev_index) << std::endl;