mayhem-firmware/firmware/application/protocols/ax25.hpp
furrtek 8573f760be Added basic APRS transmit
Added goertzel algo
Updated binary
2018-02-23 20:21:24 +00:00

70 lines
1.8 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 "crc.hpp"
#include <cstring>
#include <string>
#ifndef __AX25_H__
#define __AX25_H__
#define AX25_FLAG 0x7E
namespace ax25 {
enum protocol_id_t {
X25_PLP = 0x01,
COMP_TCPIP = 0x06,
UNCOMP_TCPIP = 0x07,
SEG_FRAG = 0x08,
FLEXNET = 0xCE,
NO_LAYER3 = 0xF0
};
class AX25Frame {
public:
void make_ui_frame(char * const address, const uint8_t control, const uint8_t protocol,
const std::string& info);
private:
void NRZI_add_bit(const uint32_t bit);
void make_extended_field(char * const data, size_t length);
void add_byte(uint8_t byte, bool is_flag, bool is_data);
void add_data(uint8_t byte);
void add_checksum();
void add_flag();
void flush();
uint16_t * bb_data_ptr { nullptr };
uint8_t current_bit { 0 };
uint8_t current_byte { 0 };
size_t bit_counter { 0 };
uint8_t ones_counter { 0 };
CRC<16, true, true> crc_ccitt { 0x1021, 0xFFFF, 0xFFFF };
};
} /* namespace ax25 */
#endif/*__AX25_H__*/