96 lines
4.0 KiB
C
96 lines
4.0 KiB
C
/*
|
|
* Library: libcrc
|
|
* File: include/checksum.h
|
|
* Author: Lammert Bies
|
|
*
|
|
* This file is licensed under the MIT License as stated below
|
|
*
|
|
* Copyright (c) 1999-2016 Lammert Bies
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
* Description
|
|
* -----------
|
|
* The headerfile include/checksum.h contains the definitions and prototypes
|
|
* for routines that can be used to calculate several kinds of checksums.
|
|
*/
|
|
|
|
#ifndef DEF_LIBCRC_CHECKSUM_H
|
|
#define DEF_LIBCRC_CHECKSUM_H
|
|
|
|
#include <stdint.h>
|
|
#include <stdio.h>
|
|
|
|
/*
|
|
* #define CRC_POLY_xxxx
|
|
*
|
|
* The constants of the form CRC_POLY_xxxx define the polynomials for some well
|
|
* known CRC calculations.
|
|
*/
|
|
|
|
#define CRC_POLY_16 0xA001
|
|
#define CRC_POLY_32 0xEDB88320L
|
|
#define CRC_POLY_CCITT 0x1021
|
|
#define CRC_POLY_DNP 0xA6BC
|
|
#define CRC_POLY_KERMIT 0x8408
|
|
#define CRC_POLY_SICK 0x8005
|
|
|
|
/*
|
|
* #define CRC_START_xxxx
|
|
*
|
|
* The constants of the form CRC_START_xxxx define the values that are used for
|
|
* initialization of a CRC value for common used calculation methods.
|
|
*/
|
|
|
|
#define CRC_START_8 0x00
|
|
#define CRC_START_16 0x0000
|
|
#define CRC_START_MODBUS 0xFFFF
|
|
#define CRC_START_XMODEM 0x0000
|
|
#define CRC_START_CCITT_1D0F 0x1D0F
|
|
#define CRC_START_CCITT_FFFF 0xFFFF
|
|
#define CRC_START_KERMIT 0x0000
|
|
#define CRC_START_SICK 0x0000
|
|
#define CRC_START_DNP 0x0000
|
|
#define CRC_START_32 0xFFFFFFFFL
|
|
|
|
/*
|
|
* Prototype list of global functions
|
|
*/
|
|
|
|
unsigned char * checksum_NMEA( const unsigned char *input_str, unsigned char *result );
|
|
uint8_t crc_8( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_16( const unsigned char *input_str, size_t num_bytes );
|
|
uint32_t crc_32( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_ccitt_1d0f( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_ccitt_ffff( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_dnp( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_kermit( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_modbus( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_sick( const unsigned char *input_str, size_t num_bytes );
|
|
uint16_t crc_xmodem( const unsigned char *input_str, size_t num_bytes );
|
|
uint8_t update_crc_8( uint8_t crc, unsigned char c );
|
|
uint16_t update_crc_16( uint16_t crc, unsigned char c );
|
|
uint32_t update_crc_32( uint32_t crc, unsigned char c );
|
|
uint16_t update_crc_ccitt( uint16_t crc, unsigned char c );
|
|
uint16_t update_crc_dnp( uint16_t crc, unsigned char c );
|
|
uint16_t update_crc_kermit( uint16_t crc, unsigned char c );
|
|
uint16_t update_crc_sick( uint16_t crc, unsigned char c, unsigned char prev_byte );
|
|
|
|
#endif // DEF_LIBCRC_CHECKSUM_H
|