portapack-mayhem/firmware/application/protocols/aprs.cpp
2023-11-08 19:22:26 +01:00

51 lines
1.7 KiB
C++

/*
* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
* Copyright (C) 2017 Furrtek
*
* 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 <cstdint>
#include "aprs.hpp"
#include "ax25.hpp"
#include "portapack_persistent_memory.hpp"
using namespace ax25;
namespace aprs {
void make_aprs_frame(const char* src_address, const uint32_t src_ssid, const char* dest_address, const uint32_t dest_ssid, const std::string& payload) {
AX25Frame frame;
char address[14] = {0};
memcpy(&address[0], dest_address, 6);
memcpy(&address[7], src_address, 6);
// euquiq: According to ax.25 doc section 2.2.13.x.x and 2.4.1.2
// SSID need bits 5.6 set, so later when shifted it will end up being 011xxxx0 (xxxx = SSID number)
// Notice that if need to signal usage of AX.25 V2.0, (dest_ssid | 112); (MSb will need to be set at the end)
address[6] = (dest_ssid | 48);
address[13] = (src_ssid | 48);
frame.make_ui_frame(address, 0x03, protocol_id_t::NO_LAYER3, payload);
}
} /* namespace aprs */