mayhem-firmware/firmware/application/apps/ui_looking_glass_app.hpp
euquiq 13ce56f7bf Added "RESOLUTION" parameter
Discord User jteich did some investigation (Thanks!) and helped me understanding this rather obscure parameter:

Internally, is called "TRIGGER", and is passed into the baseband when configuring the desired spectrum sample rate.

Please forgive me in advance if this explanation is not 100% correct. It's only my interpretation, based on my own observation and jteich's comments over Discord chat.

This trigger parameter apparently determines the amount of data over time used for calculating the signal's power inside each specttrum's bin, before considering it "done".

In short, if you lower this resolution value then the cascade will tend to be rendered a bit faster, while kind of blind to tiny signals.

On the other hand, a bigger value will help rendering and distinguishing different signals on the cascade.

Too big a value can easily clutter up the cascade. But then it may be a "blessing" when inspecting higher freuqencies -where hackrf is more deaf"

The default value of 32 is quite decent. But then, now you can experiment with it. Cheers
2020-10-26 23:43:35 -03:00

183 lines
5.2 KiB
C++

/*
* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2020 euquiq
*
* This file is part of PortaPack.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#include "ui.hpp"
#include "portapack.hpp"
#include "baseband_api.hpp"
#include "receiver_model.hpp"
#include "ui_widget.hpp"
#include "ui_navigation.hpp"
#include "ui_receiver.hpp"
#include "string_format.hpp"
#include "analog_audio_app.hpp"
#include "spectrum_color_lut.hpp"
namespace ui
{
#define SEARCH_SLICE_WIDTH 20000000 // Each slice bandwidth 20 MHz
#define MHZ_DIV 1000000
#define X2_MHZ_DIV 2000000
class GlassView : public View
{
public:
GlassView(NavigationView &nav);
~GlassView();
std::string title() const override { return "Looking Glass"; };
void on_show() override;
void on_hide() override;
void focus() override;
private:
NavigationView& nav_;
struct preset_entry
{
rf::Frequency min{};
rf::Frequency max{};
std::string label{};
};
std::vector<preset_entry> presets_db{};
void on_channel_spectrum(const ChannelSpectrum& spectrum);
void do_timers();
void on_range_changed();
void on_lna_changed(int32_t v_db);
void on_vga_changed(int32_t v_db);
void add_spectrum_pixel(Color color);
void PlotMarker(rf::Frequency pos);
void load_Presets();
void txtline_process(std::string& line);
void populate_Presets();
void presets_Default();
rf::Frequency f_min { 0 }, f_max { 0 };
rf::Frequency search_span { 0 };
rf::Frequency f_center { 0 };
rf::Frequency f_center_ini { 0 };
rf::Frequency marker_pixel_step { 0 };
rf::Frequency each_bin_size { SEARCH_SLICE_WIDTH / 240 };
rf::Frequency bins_Hz_size { 0 };
uint8_t min_color_power { 0 };
uint32_t pixel_index { 0 };
std::array<Color, 240> spectrum_row = { 0 };
ChannelSpectrumFIFO* fifo { nullptr };
uint8_t max_power = 0;
Labels labels{
{{0, 0}, "MIN: MAX: LNA VGA ", Color::light_grey()},
{{0, 1 * 16}, " RANGE: FILTER: AMP:", Color::light_grey()},
{{0, 2 * 16}, "PRESET:", Color::light_grey()},
{{0, 3 * 16}, "MARKER: MHz +/- MHz", Color::light_grey()},
{{0, 4 * 16}, "RESOLUTION: (fft trigger)", Color::light_grey()}
};
NumberField field_frequency_min {
{ 4 * 8, 0 * 16 },
4,
{ 0, 6960 },
240,
' '
};
NumberField field_frequency_max {
{ 13 * 8, 0 * 16 },
4,
{ 240, 7200 },
240,
' '
};
LNAGainField field_lna {
{ 21 * 8, 0 * 16 }
};
VGAGainField field_vga {
{ 27 * 8, 0 * 16 }
};
Text text_range{
{7 * 8, 1 * 16, 4 * 8, 16},
""};
OptionsField filter_config{
{19 * 8, 1 * 16},
4,
{
{"OFF ", 0},
{"MID ", 118}, //85 +25 (110) + a bit more to kill all blue
{"HIGH", 202}, //168 + 25 (193)
}};
RFAmpField field_rf_amp{
{29 * 8, 1 * 16}};
OptionsField range_presets{
{7 * 8, 2 * 16},
20,
{
{" NONE (WIFI 2.4GHz)", 0},
}};
NumberField field_marker{
{7 * 8, 3 * 16},
4,
{0, 7200},
25,
' '};
Text text_marker_pm{
{20 * 8, 3 * 16, 2 * 8, 16},
""};
NumberField field_trigger{
{11 * 8, 4 * 16},
3,
{2, 128},
2,
' '};
MessageHandlerRegistration message_handler_spectrum_config {
Message::ID::ChannelSpectrumConfig,
[this](const Message* const p) {
const auto message = *reinterpret_cast<const ChannelSpectrumConfigMessage*>(p);
this->fifo = message.fifo;
}
};
MessageHandlerRegistration message_handler_frame_sync {
Message::ID::DisplayFrameSync,
[this](const Message* const) {
if( this->fifo ) {
ChannelSpectrum channel_spectrum;
while( fifo->out(channel_spectrum) ) {
this->on_channel_spectrum(channel_spectrum);
}
}
}
};
};
}