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Looking Glass with PRESETS

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Added a PRESETS.TXT file (inside /LOOKINGGLASS folder).

Also optimized the way the spectrum signal is integrated into the cascade.

Added provision for ranges lower than 240MHz but I am afraid that at this time it will not be advisable to lower ranges any more than 240MHz, since some artifacts and frequency running - moving out of place- occurs.

I can only hope that someone with a better understanding of hackrf's inner code can fix this issue and perhaps enhance the scanning speed.

I found some "original commenting" inside the code:

	// TODO: Move more low-level radio control stuff to M4. It'll enable tighter
	// synchronization for things like wideband (sweeping) spectrum analysis, and
	// protocols that need quick RX/TX turn-around.

Which makes me think that there are things "missing"  from the portapack side of the code, for allowing serious speed sweeping. So I am concluding that with current "portapack framework" this might be "the best possible thing".

It is to be noted that the "new" internal sweep mode code is signed by:

 * Copyright 2016 Mike Walters, Dominic Spill
 *
 * This file is part of HackRF.

Maybe Mike or Dominic can be contacted and hopefully lend a hand on enhancing this code.
This commit is contained in:
euquiq 2020-10-26 12:53:10 -03:00
parent 3e1d726064
commit 210ec9dd1b
3 changed files with 282 additions and 162 deletions
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144
firmware/application/apps/ui_looking_glass_app.cpp
View file

@ -61,21 +61,21 @@ void GlassView::add_spectrum_pixel(Color color)
//Each having the radio signal power for it's corresponding frequency slot
void GlassView::on_channel_spectrum(const ChannelSpectrum &spectrum)
{
uint8_t max_power = 0;
baseband::spectrum_streaming_stop();
// Convert bins of this spectrum slice into a representative max_power and when enough, into pixels
for (uint16_t bin = 0; bin < 256; bin++) //Spectrum.db has 256 bins
{ // Center 12 bins are ignored (DC spike is blanked) Leftmost and rightmost 2 bins are ignored
if (bin > 1 && bin < 122) //> 1
// Spectrum.db has 256 bins. Center 12 bins are ignored (DC spike is blanked) Leftmost and rightmost 2 bins are ignored
// All things said and done, we actually need 240 of those bins:
for(uint8_t bin = 0; bin < 240; bin++)
{
if (bin < 120) {
if (spectrum.db[134 + bin] > max_power)
max_power = spectrum.db[134 + bin];
}
else
{
if (spectrum.db[128 + bin] > max_power)
max_power = spectrum.db[128 + bin];
}
else if (bin > 133 && bin < 254) // < 254
{
if (spectrum.db[bin - 128] > max_power)
max_power = spectrum.db[bin - 128];
if (spectrum.db[bin - 118] > max_power)
max_power = spectrum.db[bin - 118];
}
bins_Hz_size += each_bin_size; //add this bin Hz count into the "pixel fulfilled bag of Hz"
@ -88,9 +88,14 @@ void GlassView::on_channel_spectrum(const ChannelSpectrum &spectrum)
add_spectrum_pixel(0); //Filtered out, show black
max_power = 0;
bins_Hz_size = 0;
if (!pixel_index) //a waterfall line has been completed
if (!pixel_index) //Received indication that a waterfall line has been completed
{
bins_Hz_size = 0; //Since this is an entire pixel line, we don't carry "Pixels into next bin"
break;
} else {
bins_Hz_size -= marker_pixel_step; //reset bins size, but carrying the eventual excess Hz into next pixel
}
}
}
@ -111,7 +116,7 @@ void GlassView::on_hide()
void GlassView::on_show()
{
display.scroll_set_area( 88, 319); //Restart scrolling on the correct coordinates
display.scroll_set_area( 109, 319); //Restart scroll on the correct coordinates
baseband::spectrum_streaming_start();
}
@ -131,7 +136,13 @@ void GlassView::on_range_changed()
marker_pixel_step = search_span / 240; //Each pixel value in Hz
text_marker_pm.set(to_string_dec_uint((marker_pixel_step / X2_MHZ_DIV) + 1)); // Give idea of +/- marker precision
field_marker.set_step(marker_pixel_step / MHZ_DIV); //step needs to be a pixel wide.
int32_t marker_step = marker_pixel_step / MHZ_DIV;
if (!marker_step)
field_marker.set_step(1); //in case selected range is less than 240 (pixels)
else
field_marker.set_step(marker_step); //step needs to be a pixel wide.
f_center_ini = f_min + (SEARCH_SLICE_WIDTH / 2); //Initial center frequency for sweep
f_center_ini += SEARCH_SLICE_WIDTH; //euquiq: Why do I need to move the center ???!!! (shift needed for marker accuracy)
@ -139,20 +150,23 @@ void GlassView::on_range_changed()
f_center = f_center_ini; //Reset sweep into first slice
pixel_index = 0; //reset pixel counter
max_power = 0;
bins_Hz_size = 0; //reset amount of Hz filled up by pixels
baseband::set_spectrum(SEARCH_SLICE_WIDTH, 31); // Trigger was 31. Need to understand this parameter.
receiver_model.set_tuning_frequency(f_center_ini); //tune rx for this slice
}
void GlassView::PlotMarker(double pos)
void GlassView::PlotMarker(rf::Frequency pos)
{
pos = pos * MHZ_DIV;
pos -= f_min;
pos = pos / marker_pixel_step; //Real pixel
portapack::display.fill_rectangle({0, 82, 240, 8}, Color::black()); //Clear old marker and whole marker rectangle btw
portapack::display.fill_rectangle({pos - 2, 82, 5, 3}, Color::red()); //Red marker middle
portapack::display.fill_rectangle({pos - 1, 84, 3, 3}, Color::red()); //Red marker middle
portapack::display.fill_rectangle({pos, 86, 1, 2}, Color::red()); //Red marker middle
portapack::display.fill_rectangle({0, 100, 240, 8}, Color::black()); //Clear old marker and whole marker rectangle btw
portapack::display.fill_rectangle({pos - 2, 100, 5, 3}, Color::red()); //Red marker middle
portapack::display.fill_rectangle({pos - 1, 103, 3, 3}, Color::red()); //Red marker middle
portapack::display.fill_rectangle({pos, 106, 1, 2}, Color::red()); //Red marker middle
}
GlassView::GlassView(
@ -168,18 +182,21 @@ GlassView::GlassView(
&text_range,
&filter_config,
&field_rf_amp,
&range_presets,
&field_marker,
&text_marker_pm
});
load_Presets(); //Load available presets from TXT files (or default)
field_frequency_min.set_value(2400);
field_frequency_min.set_value(presets_db[0].min); //Defaults to first preset
field_frequency_min.on_change = [this](int32_t v) {
if (v >= field_frequency_max.value())
field_frequency_max.set_value(v + 240);
this->on_range_changed();
};
field_frequency_max.set_value(2640);
field_frequency_max.set_value(presets_db[0].max); //Defaults to first preset
field_frequency_max.on_change = [this](int32_t v) {
if (v <= field_frequency_min.value())
field_frequency_min.set_value(v - 240);
@ -201,6 +218,12 @@ GlassView::GlassView(
min_color_power = v;
};
range_presets.on_change = [this](size_t n, OptionsField::value_t v) {
field_frequency_min.set_value(presets_db[v].min,false);
field_frequency_max.set_value(presets_db[v].max,false);
this->on_range_changed();
};
field_marker.on_change = [this](int32_t v) {
PlotMarker(v); //Refresh marker on screen
};
@ -214,8 +237,8 @@ GlassView::GlassView(
nav_.push<AnalogAudioView>(); //Jump into audio view
};
display.scroll_set_area( 88, 319);
baseband::set_spectrum(SEARCH_SLICE_WIDTH, 16); // Trigger was 31. Need to understand this parameter.
display.scroll_set_area( 109, 319);
baseband::set_spectrum(SEARCH_SLICE_WIDTH, 31); // Trigger was 31. Need to understand this parameter.
on_range_changed();
@ -226,4 +249,77 @@ GlassView::GlassView(
receiver_model.enable();
}
void GlassView::load_Presets() {
File presets_file; //LOAD /WHIPCALC/ANTENNAS.TXT from microSD
auto result = presets_file.open("LOOKINGGLASS/PRESETS.TXT");
presets_db.clear(); //Start with fresh db
if (result.is_valid()) {
presets_Default(); //There is no txt, store a default range
} else {
std::string line; //There is a txt file
char one_char[1]; //Read it char by char
for (size_t pointer=0; pointer < presets_file.size();pointer++) {
presets_file.seek(pointer);
presets_file.read(one_char, 1);
if ((int)one_char[0] > 31) { //ascii space upwards
line += one_char[0]; //Add it to the textline
}
else if (one_char[0] == '\n') { //New Line
txtline_process(line); //make sense of this textline
line.clear(); //Ready for next textline
}
}
if (line.length() > 0) txtline_process(line); //Last line had no newline at end ?
if (!presets_db.size()) presets_Default(); //no antenna on txt, use default
}
populate_Presets();
}
void GlassView::txtline_process(std::string& line)
{
if (line.find("#") != std::string::npos) return; //Line is just a comment
size_t comma = line.find(","); //Get first comma position
if (comma == std::string::npos) return; //No comma at all
size_t previous = 0;
preset_entry new_preset;
new_preset.min = std::stoi(line.substr(0,comma));
if (!new_preset.min) return; //No frequency!
previous = comma + 1;
comma = line.find(",",previous); //Search for next delimiter
if (comma == std::string::npos) return; //No comma at all
new_preset.max = std::stoi(line.substr(previous,comma - previous));
if (!new_preset.max) return; //No frequency!
new_preset.label = line.substr(comma + 1);
if (new_preset.label.size() == 0) return; //No label ?
presets_db.push_back(new_preset); //Add this preset.
}
void GlassView::populate_Presets()
{
using option_t = std::pair<std::string, int32_t>;
using options_t = std::vector<option_t>;
options_t entries;
for (preset_entry preset : presets_db)
{ //go thru all available presets
entries.emplace_back(preset.label,entries.size());
}
range_presets.set_options(entries);
}
void GlassView::presets_Default()
{
presets_db.clear();
presets_db.push_back({2320, 2560, "DEFAULT WIFI 2.4GHz"});
}
}