mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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337 lines
12 KiB
C++
337 lines
12 KiB
C++
/*
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* Copyright (C) 2015 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2020 euquiq
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*
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* This file is part of PortaPack.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; see the file COPYING. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street,
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* Boston, MA 02110-1301, USA.
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*/
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#include "ui_looking_glass_app.hpp"
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using namespace portapack;
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namespace ui
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{
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void GlassView::focus() {
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field_marker.focus();
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}
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GlassView::~GlassView() {
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receiver_model.set_sampling_rate(3072000); // Just a hack to avoid hanging other apps
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receiver_model.disable();
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baseband::shutdown();
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}
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void GlassView::on_lna_changed(int32_t v_db) {
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receiver_model.set_lna(v_db);
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}
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void GlassView::on_vga_changed(int32_t v_db) {
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receiver_model.set_vga(v_db);
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}
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void GlassView::add_spectrum_pixel(Color color)
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{
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spectrum_row[pixel_index++] = color;
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if (pixel_index == 240) //got an entire waterfall line
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{
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const auto draw_y = display.scroll(1); //Scroll 1 pixel down
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display.draw_pixels( {{0, draw_y}, {240, 1}}, spectrum_row); //new line at top
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pixel_index = 0; //Start New cascade line
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}
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}
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//Apparently, the spectrum object returns an array of 256 bins
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//Each having the radio signal power for it's corresponding frequency slot
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void GlassView::on_channel_spectrum(const ChannelSpectrum &spectrum)
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{
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baseband::spectrum_streaming_stop();
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// Convert bins of this spectrum slice into a representative max_power and when enough, into pixels
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// Spectrum.db has 256 bins. Center 12 bins are ignored (DC spike is blanked) Leftmost and rightmost 2 bins are ignored
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// All things said and done, we actually need 240 of those bins:
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for(uint8_t bin = 0; bin < 240; bin++)
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{
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if (bin < 120) {
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if (spectrum.db[134 + bin] > max_power)
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max_power = spectrum.db[134 + bin];
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}
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else
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{
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if (spectrum.db[bin - 118] > max_power)
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max_power = spectrum.db[bin - 118];
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}
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bins_Hz_size += each_bin_size; //add this bin Hz count into the "pixel fulfilled bag of Hz"
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if (bins_Hz_size >= marker_pixel_step) //new pixel fullfilled
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{
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if (min_color_power < max_power)
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add_spectrum_pixel(spectrum_rgb3_lut[max_power]); //Pixel will represent max_power
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else
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add_spectrum_pixel(0); //Filtered out, show black
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max_power = 0;
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if (!pixel_index) //Received indication that a waterfall line has been completed
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{
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bins_Hz_size = 0; //Since this is an entire pixel line, we don't carry "Pixels into next bin"
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break;
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} else {
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bins_Hz_size -= marker_pixel_step; //reset bins size, but carrying the eventual excess Hz into next pixel
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}
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}
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}
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if (pixel_index)
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f_center += LOOKING_GLASS_SLICE_WIDTH; //Move into the next bandwidth slice NOTE: spectrum.sampling_rate = LOOKING_GLASS_SLICE_WIDTH
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else
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f_center = f_center_ini; //Start a new sweep
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receiver_model.set_tuning_frequency(f_center); //tune rx for this slice
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baseband::spectrum_streaming_start(); //Do the RX
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}
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void GlassView::on_hide()
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{
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baseband::spectrum_streaming_stop();
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display.scroll_disable();
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}
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void GlassView::on_show()
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{
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display.scroll_set_area( 109, 319); //Restart scroll on the correct coordinates
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baseband::spectrum_streaming_start();
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}
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void GlassView::on_range_changed()
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{
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f_min = field_frequency_min.value();
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f_max = field_frequency_max.value();
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search_span = f_max - f_min;
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field_marker.set_range(f_min, f_max); //Move the marker between range
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field_marker.set_value(f_min + (search_span / 2)); //Put MARKER AT MIDDLE RANGE
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text_range.set(to_string_dec_uint(search_span));
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f_min = (f_min)*MHZ_DIV; //Transpose into full frequency realm
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f_max = (f_max)*MHZ_DIV;
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search_span = search_span * MHZ_DIV;
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marker_pixel_step = search_span / 240; //Each pixel value in Hz
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text_marker_pm.set(to_string_dec_uint((marker_pixel_step / X2_MHZ_DIV) + 1)); // Give idea of +/- marker precision
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int32_t marker_step = marker_pixel_step / MHZ_DIV;
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if (!marker_step)
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field_marker.set_step(1); //in case selected range is less than 240 (pixels)
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else
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field_marker.set_step(marker_step); //step needs to be a pixel wide.
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f_center_ini = f_min + (LOOKING_GLASS_SLICE_WIDTH / 2); //Initial center frequency for sweep
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f_center_ini += LOOKING_GLASS_SLICE_WIDTH; //euquiq: Why do I need to move the center ???!!! (shift needed for marker accuracy)
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PlotMarker(field_marker.value()); //Refresh marker on screen
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f_center = f_center_ini; //Reset sweep into first slice
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pixel_index = 0; //reset pixel counter
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max_power = 0;
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bins_Hz_size = 0; //reset amount of Hz filled up by pixels
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baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, field_trigger.value());
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receiver_model.set_tuning_frequency(f_center_ini); //tune rx for this slice
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}
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void GlassView::PlotMarker(rf::Frequency fpos)
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{
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int64_t pos = fpos * MHZ_DIV;
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pos -= f_min;
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pos = pos / marker_pixel_step; //Real pixel
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portapack::display.fill_rectangle({0, 100, 240, 8}, Color::black()); //Clear old marker and whole marker rectangle btw
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portapack::display.fill_rectangle({pos - 2, 100, 5, 3}, Color::red()); //Red marker middle
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portapack::display.fill_rectangle({pos - 1, 103, 3, 3}, Color::red()); //Red marker middle
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portapack::display.fill_rectangle({pos, 106, 1, 2}, Color::red()); //Red marker middle
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}
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GlassView::GlassView(
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NavigationView &nav) : nav_(nav)
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{
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baseband::run_image(portapack::spi_flash::image_tag_wideband_spectrum);
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add_children({&labels,
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&field_frequency_min,
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&field_frequency_max,
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&field_lna,
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&field_vga,
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&text_range,
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&filter_config,
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&field_rf_amp,
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&range_presets,
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&field_marker,
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&text_marker_pm,
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&field_trigger
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});
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load_Presets(); //Load available presets from TXT files (or default)
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field_frequency_min.set_value(presets_db[0].min); //Defaults to first preset
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field_frequency_min.on_change = [this](int32_t v) {
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if (v >= field_frequency_max.value())
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field_frequency_max.set_value(v + 240);
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this->on_range_changed();
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};
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field_frequency_max.set_value(presets_db[0].max); //Defaults to first preset
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field_frequency_max.on_change = [this](int32_t v) {
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if (v <= field_frequency_min.value())
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field_frequency_min.set_value(v - 240);
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this->on_range_changed();
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};
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field_lna.set_value(receiver_model.lna());
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field_lna.on_change = [this](int32_t v) {
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this->on_lna_changed(v);
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};
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field_vga.set_value(receiver_model.vga());
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field_vga.on_change = [this](int32_t v_db) {
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this->on_vga_changed(v_db);
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};
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filter_config.set_selected_index(0);
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filter_config.on_change = [this](size_t n, OptionsField::value_t v) {
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(void)n;
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min_color_power = v;
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};
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range_presets.on_change = [this](size_t n, OptionsField::value_t v) {
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(void)n;
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field_frequency_min.set_value(presets_db[v].min,false);
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field_frequency_max.set_value(presets_db[v].max,false);
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this->on_range_changed();
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};
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field_marker.on_change = [this](int32_t v) {
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PlotMarker(v); //Refresh marker on screen
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};
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field_marker.on_select = [this](NumberField&) {
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f_center = field_marker.value();
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f_center = f_center * MHZ_DIV;
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receiver_model.set_tuning_frequency(f_center); //Center tune rx in marker freq.
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receiver_model.set_frequency_step(MHZ_DIV); // Preset a 1 MHz frequency step into RX -> AUDIO
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nav_.pop();
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nav_.push<AnalogAudioView>(); //Jump into audio view
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};
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field_trigger.set_value(32); //Defaults to 32, as normal triggering resolution
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field_trigger.on_change = [this](int32_t v) {
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baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, v);
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};
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display.scroll_set_area( 109, 319);
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baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, field_trigger.value()); //trigger:
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// Discord User jteich: WidebandSpectrum::on_message to set the trigger value. In WidebandSpectrum::execute ,
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// it keeps adding the output of the fft to the buffer until "trigger" number of calls are made,
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//at which time it pushes the buffer up with channel_spectrum.feed
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on_range_changed();
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receiver_model.set_modulation(ReceiverModel::Mode::SpectrumAnalysis);
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receiver_model.set_sampling_rate(LOOKING_GLASS_SLICE_WIDTH); //20mhz
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receiver_model.set_baseband_bandwidth(LOOKING_GLASS_SLICE_WIDTH); // possible values: 1.75/2.5/3.5/5/5.5/6/7/8/9/10/12/14/15/20/24/28MHz
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receiver_model.set_squelch_level(0);
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receiver_model.enable();
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}
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void GlassView::load_Presets() {
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File presets_file; //LOAD /WHIPCALC/ANTENNAS.TXT from microSD
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auto result = presets_file.open("LOOKINGGLASS/PRESETS.TXT");
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presets_db.clear(); //Start with fresh db
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if (result.is_valid()) {
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presets_Default(); //There is no txt, store a default range
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} else {
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std::string line; //There is a txt file
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char one_char[1]; //Read it char by char
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for (size_t pointer=0; pointer < presets_file.size();pointer++) {
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presets_file.seek(pointer);
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presets_file.read(one_char, 1);
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if ((int)one_char[0] > 31) { //ascii space upwards
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line += one_char[0]; //Add it to the textline
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}
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else if (one_char[0] == '\n') { //New Line
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txtline_process(line); //make sense of this textline
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line.clear(); //Ready for next textline
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}
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}
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if (line.length() > 0) txtline_process(line); //Last line had no newline at end ?
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if (!presets_db.size()) presets_Default(); //no antenna on txt, use default
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}
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populate_Presets();
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}
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void GlassView::txtline_process(std::string& line)
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{
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if (line.find("#") != std::string::npos) return; //Line is just a comment
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size_t comma = line.find(","); //Get first comma position
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if (comma == std::string::npos) return; //No comma at all
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size_t previous = 0;
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preset_entry new_preset;
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new_preset.min = std::stoi(line.substr(0,comma));
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if (!new_preset.min) return; //No frequency!
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previous = comma + 1;
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comma = line.find(",",previous); //Search for next delimiter
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if (comma == std::string::npos) return; //No comma at all
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new_preset.max = std::stoi(line.substr(previous,comma - previous));
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if (!new_preset.max) return; //No frequency!
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new_preset.label = line.substr(comma + 1);
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if (new_preset.label.size() == 0) return; //No label ?
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presets_db.push_back(new_preset); //Add this preset.
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}
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void GlassView::populate_Presets()
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{
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using option_t = std::pair<std::string, int32_t>;
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using options_t = std::vector<option_t>;
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options_t entries;
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for (preset_entry preset : presets_db)
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{ //go thru all available presets
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entries.emplace_back(preset.label,entries.size());
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}
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range_presets.set_options(entries);
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}
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void GlassView::presets_Default()
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{
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presets_db.clear();
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presets_db.push_back({2320, 2560, "DEFAULT WIFI 2.4GHz"});
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}
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}
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