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EPIRB TX Application (#3081)
* First step to epirb-tx app * Next step to epirb_tx app * Fixed merge * EPIRB TX app progress - Fixed UI - Added automatic frame resend after delay - Added load of beacons from EPIRB/BEACONS.TXT file * First step to adding 121.5 MHz signal * Refactored 121.5 signal generation code * Added frequency change when switching from BPSK to AM * Added checkbox for AM signal. Added START/STOP button Added AM frequency First step to editor mode. * Next step to frame editor * Fixed location bits. * Refactored code + fixed location * Added location fields * UI fixes + settings backup Fixed lat/long display Added send on change checkbox Added settings backup Fixed locator edition Fixed BEACONS.TXT to move to Self test beacons. * Update ui_epirb_tx.cpp Fixed timeout reset * Added national location protocol. Added national location protocol. Fixed send on change. * UI fixes Added country selection Separated beacon protocol and beacon type selectors * Standard protocol Added standard protocol Added internal checkbox * Fixed fomratting * Code cleanup * Comments / doc * More comments / doc * More comments / doc Fixed pre count duration. Added frequency restore after leaving * Prepare merge * Prepare merge * Finished merge * More comments and doc * Update ui_epirb_tx.cpp Fixed out of memory error when using AlphanumView * Update proc_epirb_tx.hpp Fixed comment * Fixed copilot PR comments. * Update proc_epirb_tx.hpp Fixed formatting * Update external.ld Merge with kiss_tnc app
This commit is contained in:
Frederic BORRY
GitHub
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/*
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* Copyright (C) 2026 Frederic BORRY - ADRASEC 31
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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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#ifndef __LOCATION_H__
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#define __LOCATION_H__
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#include "portapack.hpp"
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#include "ui_epirb_tx.hpp"
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#include <cmath>
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#include <cctype>
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#include <cstdio>
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namespace ui::external_app::epirb_tx {
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/**
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* Convert decimal coordinates to sexagesimal coordinates
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* @param value the decimal value
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* @param negative output N(false)/S(true) or E(false)/W(true) value
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* @param deg output degrees value
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* @param min output minutes value
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* @param sec output seconds value
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*/
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static void decimal_to_dms(double value, bool& negative, uint16_t& deg, uint8_t& min, uint8_t& sec) {
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negative = value < 0;
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value = std::fabs(value);
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deg = (uint16_t)value;
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double m = (value - deg) * 60.0;
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min = (uint8_t)m;
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double s = (m - min) * 60.0;
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sec = (uint8_t)(s + 0.5);
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if (sec == 60) {
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sec = 0;
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min++;
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}
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if (min == 60) {
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min = 0;
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deg++;
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}
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}
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/**
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* Convert sexagesimal coordinates to decimal
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* @param negative N(false)/S(true) or E(false)/W(true) value
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* @param deg degrees value
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* @param min minutes value
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* @param sec seconds value
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* @return value the decimal value
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*/
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static double dms_to_decimal(bool negative, uint16_t deg, uint8_t min, uint8_t sec) {
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double v = deg + min / 60.0 + sec / 3600.0;
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return negative ? -v : v;
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}
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/**
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* Convert maidenhead locator to decima coordinates
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* @param loc the locator
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* @param lat output latitude
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* @param lon output longitude
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*/
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static void maidenhead_to_decimal(const std::string& loc, float& lat, float& lon) {
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static const double lon_step[] =
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{
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20.0,
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2.0,
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1.0 / 12.0,
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1.0 / 120.0,
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1.0 / 2880.0};
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static const double lat_step[] =
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{
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10.0,
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1.0,
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1.0 / 24.0,
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1.0 / 240.0,
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1.0 / 5760.0};
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lon = -180.0;
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lat = -90.0;
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int pairs = loc.size() / 2;
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if (pairs > 5)
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pairs = 5;
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for (int i = 0; i < pairs; i++) {
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char c1 = std::toupper(loc[i * 2]);
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char c2 = std::toupper(loc[i * 2 + 1]);
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double lon_size = lon_step[i];
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double lat_size = lat_step[i];
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int v1, v2;
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if (i % 2 == 0) // letters
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{
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v1 = c1 - 'A';
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v2 = c2 - 'A';
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} else // digits
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{
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v1 = c1 - '0';
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v2 = c2 - '0';
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}
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lon += v1 * lon_size;
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lat += v2 * lat_size;
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}
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// Cell center
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lon += lon_step[pairs - 1] / 2.0;
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lat += lat_step[pairs - 1] / 2.0;
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}
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/**
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* Convert decimal coordinates to maidenhead locator
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* @param lat the latitude
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* @param lon the longitude
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* @param precision (optional, defaults to 8) the number of charater for the maidenhead locator
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* @return the locator
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*/
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static std::string decimal_to_maidenhead(double lat, double lon, int precision = 8) {
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lon += 180.0;
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lat += 90.0;
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int A = lon / 20;
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int B = lat / 10;
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lon -= A * 20;
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lat -= B * 10;
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int C = lon / 2;
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int D = lat / 1;
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lon -= C * 2;
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lat -= D * 1;
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int E = lon / (5.0 / 60.0);
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int F = lat / (2.5 / 60.0);
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lon -= E * (5.0 / 60.0);
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lat -= F * (2.5 / 60.0);
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int G = lon / (5.0 / 600.0);
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int H = lat / (2.5 / 600.0);
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std::string locator;
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locator += char('A' + A);
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locator += char('A' + B);
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if (precision >= 4) {
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locator += char('0' + C);
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locator += char('0' + D);
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}
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if (precision >= 6) {
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locator += char('a' + E);
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locator += char('a' + F);
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}
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if (precision >= 8) {
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locator += char('0' + G);
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locator += char('0' + H);
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}
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return locator;
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}
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/**
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* Init the provided Location values from its locator
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*/
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void init_from_locator(Location& loc) {
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maidenhead_to_decimal(loc.locator, loc.latitude, loc.longitude);
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decimal_to_dms(loc.latitude,
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loc.south,
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loc.lat_deg,
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loc.lat_min,
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loc.lat_sec);
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decimal_to_dms(loc.longitude,
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loc.west,
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loc.long_deg,
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loc.long_min,
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loc.long_sec);
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}
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/**
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* Init the provided Location values from its decimal coordinates
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*/
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void init_from_decimal(Location& loc) {
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decimal_to_dms(loc.latitude,
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loc.south,
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loc.lat_deg,
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loc.lat_min,
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loc.lat_sec);
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decimal_to_dms(loc.longitude,
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loc.west,
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loc.long_deg,
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loc.long_min,
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loc.long_sec);
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loc.locator = decimal_to_maidenhead(loc.latitude, loc.longitude);
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}
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/**
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* Init the provided Location values from its sexagesimal coordinates
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*/
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void init_from_dms(Location& loc) {
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loc.latitude = dms_to_decimal(
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loc.south,
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loc.lat_deg,
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loc.lat_min,
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loc.lat_sec);
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loc.longitude = dms_to_decimal(
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loc.west,
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loc.long_deg,
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loc.long_min,
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loc.long_sec);
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loc.locator = decimal_to_maidenhead(loc.latitude, loc.longitude);
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}
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/**
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* Convert the provided Loaction to it's latitude string (format <xxx°yy'zz"N>)
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*/
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std::string to_latitude_string(const Location& location) {
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char buffer[16];
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// Format : <xxx°yy'zz"N>
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snprintf(buffer, sizeof(buffer), "%3d\260%02d'%02d\"%c", location.lat_deg, location.lat_min, location.lat_sec, location.south ? 'S' : 'N');
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return std::string(buffer);
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}
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/**
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* Convert the provided Loaction to it's longitude string (format <xxx°yy'zz"W>)
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*/
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std::string to_longitude_string(const Location& location) {
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char buffer[16];
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// Format : <xxx°yy'zz"W>
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snprintf(buffer, sizeof(buffer), "%3d\260%02d'%02d\"%c", location.long_deg, location.long_min, location.long_sec, location.west ? 'W' : 'E');
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return std::string(buffer);
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}
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} // namespace ui::external_app::epirb_tx
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#endif /*__LOCATION_H__*/
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