mirror of
https://github.com/portapack-mayhem/mayhem-firmware.git
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69 lines
1.7 KiB
C++
69 lines
1.7 KiB
C++
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/*
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* Copyright (C) 2014 Jared Boone, ShareBrained Technology, Inc.
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* Copyright (C) 2017 Furrtek
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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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#include "crc.hpp"
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#include <cstring>
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#include <string>
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#ifndef __AX25_H__
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#define __AX25_H__
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#define AX25_FLAG 0x7E
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namespace ax25 {
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enum protocol_id_t {
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X25_PLP = 0x01,
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COMP_TCPIP = 0x06,
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UNCOMP_TCPIP = 0x07,
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SEG_FRAG = 0x08,
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FLEXNET = 0xCE,
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NO_LAYER3 = 0xF0
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};
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class AX25Frame {
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public:
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void make_ui_frame(char * const address, const uint8_t control, const uint8_t protocol,
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uint8_t * const info, size_t length);
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private:
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void make_extended_field(char * const data, size_t length);
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void add_byte(uint8_t byte, bool is_flag, bool is_data);
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void add_data(uint8_t byte);
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void add_checksum();
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void add_flag();
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void flush();
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uint8_t * bb_data_ptr { nullptr };
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uint8_t current_bit { 0 };
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uint8_t current_byte { 0 };
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size_t bit_counter { 0 };
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uint8_t ones_counter { 0 };
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CRC<16> crc_ccitt { 0x1021, 0xFFFF };
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};
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} /* namespace ax25 */
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#endif/*__AX25_H__*/
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