www.pudn.com > lib_crc_16-32.zip > lib_crc.h

    /*******************************************************************\ 
    *                                                                   * 
    *   Library         : lib_crc                                       * 
    *   File            : lib_crc.h                                     * 
    *   Author          : Lammert Bies  1999-2007                       * 
    *   E-mail          : info@lammertbies.nl                           * 
    *   Language        : ANSI C                                        * 
    *                                                                   * 
    *                                                                   * 
    *   Description                                                     * 
    *   ===========                                                     * 
    *                                                                   * 
    *   The file lib_crc.h contains public definitions  and  proto-     * 
    *   types for the CRC functions present in lib_crc.c.               * 
    *                                                                   * 
    *                                                                   * 
    *   Dependencies                                                    * 
    *   ============                                                    * 
    *                                                                   * 
    *   none                                                            * 
    *                                                                   * 
    *                                                                   * 
    *   Modification history                                            * 
    *   ====================                                            * 
    *                                                                   * 
    *   Date        Version Comment                                     * 
    *                                                                   * 
    *   2007-04-01  1.15    Added CRC16 calculation for Modbus          * 
    *                                                                   * 
    *   2007-03-28  1.14    Added CRC16 routine for Sick devices        * 
    *                                                                   * 
    *   2005-12-17  1.13    Added CRC-CCITT with initial 0x1D0F         * 
    *                                                                   * 
    *   2005-02-14  1.12    Added CRC-CCITT with initial 0x0000         * 
    *                                                                   * 
    *   2005-02-05  1.11    Fixed bug in CRC-DNP routine                * 
    *                                                                   * 
    *   2005-02-04  1.10    Added CRC-DNP routines                      * 
    *                                                                   * 
    *   2005-01-07  1.02    Changes in tst_crc.c                        * 
    *                                                                   * 
    *   1999-02-21  1.01    Added FALSE and TRUE mnemonics              * 
    *                                                                   * 
    *   1999-01-22  1.00    Initial source                              * 
    *                                                                   * 
    \*******************************************************************/ 
 
 
 
#define CRC_VERSION     "1.15" 
 
 
 
#define FALSE           0 
#define TRUE            1 
 
 
 
unsigned short          update_crc_16(    unsigned short crc, char c                 ); 
unsigned long           update_crc_32(    unsigned long  crc, char c                 ); 
unsigned short          update_crc_ccitt( unsigned short crc, char c                 ); 
unsigned short          update_crc_dnp(   unsigned short crc, char c                 ); 
unsigned short          update_crc_sick(  unsigned short crc, char c, char prev_byte );