/* * 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_looking_glass_app.hpp" using namespace portapack; namespace ui { void GlassView::focus() { field_marker.focus(); } GlassView::~GlassView() { receiver_model.set_sampling_rate(3072000); // Just a hack to avoid hanging other apps receiver_model.disable(); baseband::shutdown(); } void GlassView::on_lna_changed(int32_t v_db) { receiver_model.set_lna(v_db); } void GlassView::on_vga_changed(int32_t v_db) { receiver_model.set_vga(v_db); } void GlassView::add_spectrum_pixel(Color color) { spectrum_row[pixel_index++] = color; if (pixel_index == 240) // got an entire waterfall line { display.draw_pixels({{0, display.scroll(1)}, {240, 1}}, spectrum_row); // new line at top, one less var, speedier pixel_index = 0; // Start New cascade line } } // Apparently, the spectrum object returns an array of 256 bins // Each having the radio signal power for it's corresponding frequency slot void GlassView::on_channel_spectrum(const ChannelSpectrum &spectrum) { baseband::spectrum_streaming_stop(); // Convert bins of this spectrum slice into a representative max_power and when enough, into pixels // 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) // 134 max_power = spectrum.db[134 + bin]; } else { if (spectrum.db[bin - 118] > max_power) // 118 max_power = spectrum.db[bin - 118]; } bins_Hz_size += each_bin_size; // add this bin Hz count into the "pixel fulfilled bag of Hz" if (bins_Hz_size >= marker_pixel_step) // new pixel fullfilled { if (min_color_power < max_power) add_spectrum_pixel(spectrum_rgb3_lut[max_power]); // Pixel will represent max_power else add_spectrum_pixel(0); // Filtered out, show black max_power = 0; 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" f_center = f_center_ini; // Start a new sweep radio::set_tuning_frequency(f_center); // tune rx for this new slice directly, faster than using persistent memory saving chThdSleepMilliseconds(10); baseband::spectrum_streaming_start(); // Do the RX return; } bins_Hz_size -= marker_pixel_step; // reset bins size, but carrying the eventual excess Hz into next pixel } } f_center += LOOKING_GLASS_SLICE_WIDTH; // Move into the next bandwidth slice NOTE: spectrum.sampling_rate = LOOKING_GLASS_SLICE_WIDTH radio::set_tuning_frequency(f_center); // tune rx for this new slice directly, faster than using persistent memory saving chThdSleepMilliseconds(5); // receiver_model.set_tuning_frequency(f_center); //tune rx for this slice baseband::spectrum_streaming_start(); // Do the RX } void GlassView::on_hide() { baseband::spectrum_streaming_stop(); display.scroll_disable(); } void GlassView::on_show() { display.scroll_set_area(109, 319); // Restart scroll on the correct coordinates baseband::spectrum_streaming_start(); } void GlassView::on_range_changed() { f_min = field_frequency_min.value(); f_max = field_frequency_max.value(); search_span = f_max - f_min; field_marker.set_range(f_min, f_max); // Move the marker between range field_marker.set_value(f_min + (search_span / 2)); // Put MARKER AT MIDDLE RANGE text_range.set(to_string_dec_uint(search_span)); f_min = (f_min)*MHZ_DIV; // Transpose into full frequency realm f_max = (f_max)*MHZ_DIV; search_span = search_span * MHZ_DIV; 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 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 + (LOOKING_GLASS_SLICE_WIDTH / 2); // Initial center frequency for sweep PlotMarker(field_marker.value()); // Refresh marker on screen 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(LOOKING_GLASS_SLICE_WIDTH, field_trigger.value()); receiver_model.set_tuning_frequency(f_center_ini); // tune rx for this slice } 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, 100, 240, 8}, Color::black()); // Clear old marker and whole marker rectangle btw portapack::display.fill_rectangle({(int)pos - 2, 100, 5, 3}, Color::red()); // Red marker top portapack::display.fill_rectangle({(int)pos - 1, 103, 3, 3}, Color::red()); // Red marker middle portapack::display.fill_rectangle({(int)pos, 106, 1, 2}, Color::red()); // Red marker bottom } GlassView::GlassView( NavigationView &nav) : nav_(nav) { baseband::run_image(portapack::spi_flash::image_tag_wideband_spectrum); add_children({&labels, &field_frequency_min, &field_frequency_max, &field_lna, &field_vga, &text_range, &steps_config, &filter_config, &field_rf_amp, &range_presets, &field_marker, &text_marker_pm, &field_trigger}); load_Presets(); // Load available presets from TXT files (or default) field_frequency_min.set_value(presets_db[0].min); // Defaults to first preset field_frequency_min.set_step( steps ); field_frequency_min.on_change = [this](int32_t v) { int32_t steps_ = steps ; if( steps_ < 20 ) steps_ = 20 ; if( v > 7200 - steps_ ) { v = 7200 - steps_ ; field_frequency_min.set_value( v ); } if (v >= (field_frequency_max.value() - steps_ ) ) field_frequency_max.set_value( v + steps_ ); this->on_range_changed(); }; field_frequency_min.on_select = [this, &nav](NumberField& field) { auto new_view = nav_.push(field_frequency_min.value()*1000000); new_view->on_changed = [this, &field](rf::Frequency f) { int32_t freq = f / 1000000 ; if( freq > (7200 - steps ) ) freq= 7200 - steps ; field_frequency_min.set_value( freq ); if( field_frequency_max.value() < ( freq + steps ) ) field_frequency_max.set_value( freq + steps ); this->on_range_changed(); }; }; field_frequency_max.set_value(presets_db[0].max); // Defaults to first preset field_frequency_max.set_step( steps ); field_frequency_max.on_change = [this](int32_t v) { int32_t steps_ = steps ; if( steps_ < 20 ) steps_ = 20 ; if( v < steps_ ) { v = steps_ ; field_frequency_max.set_value( v ); } if (v < (field_frequency_min.value() + steps_) ) field_frequency_min.set_value(v - steps_); this->on_range_changed(); }; field_frequency_max.on_select = [this, &nav](NumberField& field) { auto new_view = nav_.push(field_frequency_max.value()*1000000); new_view->on_changed = [this, &field](rf::Frequency f) { int32_t freq = f / 1000000 ; if( freq < steps ) freq= steps ; field_frequency_max.set_value( freq ); if( field_frequency_min.value() > ( freq - steps) ) field_frequency_min.set_value( freq - steps ); this->on_range_changed(); }; }; field_lna.set_value(receiver_model.lna()); field_lna.on_change = [this](int32_t v) { this->on_lna_changed(v); }; field_vga.set_value(receiver_model.vga()); field_vga.on_change = [this](int32_t v_db) { this->on_vga_changed(v_db); }; steps_config.set_selected_index(3); //default of 250 Mhz steps steps_config.on_change = [this](size_t n, OptionsField::value_t v) { (void)n; field_frequency_min.set_step( v ); field_frequency_max.set_step( v ); steps = v ; }; range_presets.on_change = [this](size_t n, OptionsField::value_t v) { (void)n; 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 }; field_marker.on_select = [this](NumberField &) { f_center = field_marker.value(); f_center = f_center * MHZ_DIV; receiver_model.set_tuning_frequency(f_center); // Center tune rx in marker freq. receiver_model.set_frequency_step(MHZ_DIV); // Preset a 1 MHz frequency step into RX -> AUDIO nav_.pop(); nav_.push(); // Jump into audio view }; field_trigger.set_value(32); // Defaults to 32, as normal triggering resolution field_trigger.on_change = [this](int32_t v) { baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, v); }; display.scroll_set_area(109, 319); baseband::set_spectrum(LOOKING_GLASS_SLICE_WIDTH, field_trigger.value()); // trigger: // Discord User jteich: WidebandSpectrum::on_message to set the trigger value. In WidebandSpectrum::execute , // it keeps adding the output of the fft to the buffer until "trigger" number of calls are made, // at which time it pushes the buffer up with channel_spectrum.feed on_range_changed(); receiver_model.set_modulation(ReceiverModel::Mode::SpectrumAnalysis); receiver_model.set_sampling_rate(LOOKING_GLASS_SLICE_WIDTH); // 20mhz 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 receiver_model.set_squelch_level(0); 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; using options_t = std::vector; 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"}); } }