/* * Copyright (C) 2020 by Jonathan Naylor G4KLX * * 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 of the License, 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; if not, write to the Free Software * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #if !defined(AX25DEFINES_H) #define AX25DEFINES_H const uint8_t AX25_RADIO_SYMBOL_LENGTH = 20U; // At 24 kHz sample rate const uint8_t AX25_FRAME_START = 0x7EU; const uint8_t AX25_FRAME_END = 0x7EU; const uint8_t AX25_FRAME_ABORT = 0xFEU; const uint8_t AX25_MAX_ONES = 5U; const uint16_t AX25_MIN_FRAME_LENGTH = 17U; // Callsign (7) + Callsign (7) + Control (1) + Checksum (2) const uint16_t AX25_MAX_FRAME_LENGTH = 330U; // Callsign (7) + Callsign (7) + 8 Digipeaters (56) + // Control (1) + PID (1) + Data (256) + Checksum (2) #endif