Noaa apt decoder (#2648)

2026-08-22 07:29:03 +00:00 · 2025-05-11 20:24:52 +02:00
parent 7553dafffc
commit db65ae192a
16 changed files with 792 additions and 0 deletions
@@ -0,0 +1,155 @@
+/*
+ * Copyright (C) 2025 HTotoo
+ *
+ * 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.
+ */
+
+/*
+TODOS LATER:
+ - add load data from wav file (maybe to a separate app, not this)
+ - AGC?!?
+ - Auto doppler correction
+ - fix and enable sync detection
+ - auto start / stop bmp save on each image
+*/
+
+#include "ui_noaaapt_rx.hpp"
+
+#include "audio.hpp"
+#include "rtc_time.hpp"
+#include "baseband_api.hpp"
+#include "string_format.hpp"
+#include "portapack_persistent_memory.hpp"
+#include "lcd_ili9341.hpp"
+
+using namespace portapack;
+using namespace modems;
+using namespace ui;
+
+namespace ui::external_app::noaaapt_rx {
+
+void NoaaAptRxView::focus() {
+    field_frequency.focus();
+}
+
+NoaaAptRxView::NoaaAptRxView(NavigationView& nav)
+    : nav_{nav} {
+    baseband::run_prepared_image(portapack::memory::map::m4_code.base());
+    add_children({&rssi,
+                  &field_rf_amp,
+                  &field_lna,
+                  &field_vga,
+                  &field_volume,
+                  &field_frequency,
+                  &txt_status,
+                  //&check_wav,  // enable this or the record view, but not both. yet it has some error, says "Invalid object" a lot. so disabled it
+                  //&record_view,  //
+                  &button_ss});
+
+    record_view.set_filename_date_frequency(true);
+    record_view.on_error = [&nav](std::string message) {
+        nav.display_modal("Error", message);
+    };
+    record_view.set_sampling_rate(12000);
+
+    field_frequency.set_step(100);
+    field_frequency.on_edit_shown = [this]() {
+        paused = true;
+    };
+    field_frequency.on_edit_hidden = [this]() {
+        paused = false;
+    };
+    audio::set_rate(audio::Rate::Hz_12000);
+    audio::output::start();
+    receiver_model.set_hidden_offset(NOAAAPT_FREQ_OFFSET);
+    receiver_model.set_baseband_bandwidth(1750000);
+    receiver_model.set_sampling_rate(3072000);
+    receiver_model.enable();
+    txt_status.set("Waiting for signal.");
+
+    button_ss.on_select = [this](Button&) {
+        if (bmp.is_loaded()) {
+            bmp.close();
+            button_ss.set_text(LanguageHelper::currentMessages[LANG_START]);
+            if (check_wav.value()) {
+                record_view.stop();
+            }
+            return;
+        }
+        if (check_wav.value()) {
+            record_view.start();
+        }
+        ensure_directory("/BMP");
+        bmp.create("/BMP/noaa_" + to_string_timestamp(rtc_time::now()) + ".bmp", NOAAAPT_PX_SIZE, 1);
+
+        button_ss.set_text(LanguageHelper::currentMessages[LANG_STOP]);
+    };
+    on_settings_changed();
+}
+
+NoaaAptRxView::~NoaaAptRxView() {
+    stopping = true;
+    receiver_model.set_hidden_offset(0);
+    bmp.close();
+    receiver_model.disable();
+    baseband::shutdown();
+    audio::output::stop();
+    record_view.stop();
+}
+
+void NoaaAptRxView::on_settings_changed() {
+    baseband::set_noaaapt_config();
+}
+
+void NoaaAptRxView::on_status(NoaaAptRxStatusDataMessage msg) {
+    (void)msg;
+    std::string tmp = "";
+    if (msg.state == 0) {
+        tmp = "Waiting for signal.";
+    } else if (msg.state == 1) {
+        tmp = "Synced.";
+    } else if (msg.state == 2) {
+        tmp = "Image arriving.";
+    }
+    txt_status.set(tmp);
+}
+
+// this stores and displays the image. keep it as simple as you can. a bit more complexity will kill the sync
+void NoaaAptRxView::on_image(NoaaAptRxImageDataMessage msg) {
+    if ((line_num) >= 320 - NOAA_IMG_START_ROW * 16) line_num = 0;  // for draw reset
+
+    for (uint16_t i = 0; i < msg.cnt; i += 1) {
+        Color pxl = {msg.image[i], msg.image[i], msg.image[i]};
+        bmp.write_next_px(pxl);
+        line_in_part++;
+        if (line_in_part == NOAAAPT_PX_SIZE) {
+            line_in_part = 0;
+            line_num++;
+            bmp.expand_y_delta(1);
+        }
+
+        uint16_t xpos = line_in_part / (NOAAAPT_PX_SIZE / 240);
+        if (xpos >= 240) xpos = 239;
+        line_buffer[xpos] = pxl;
+        if ((line_in_part == 0)) {
+            portapack::display.render_line({0, line_num + NOAA_IMG_START_ROW * 16}, 240, line_buffer);
+        }
+    }
+}
+
+}  // namespace ui::external_app::noaaapt_rx