src/main/common/crc.h

   1 /*
   2  * This file is part of Cleanflight.
   3  *
   4  * Cleanflight is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Cleanflight is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with Cleanflight.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #pragma once
  19
  20 #include <stdint.h>
  21
  22 struct sbuf_s;
  23
  24 uint16_t crc16_ccitt(uint16_t crc, unsigned char a);
  25 uint16_t crc16_ccitt_update(uint16_t crc, const void *data, uint32_t length);
  26 void crc16_ccitt_sbuf_append(struct sbuf_s *dst, uint8_t *start);
  27
  28 uint8_t crc8_dvb_s2(uint8_t crc, unsigned char a);
  29 uint8_t crc8_dvb_s2_update(uint8_t crc, const void *data, uint32_t length);
  30 void crc8_dvb_s2_sbuf_append(struct sbuf_s *dst, uint8_t *start);
  31
  32 uint8_t crc8_xor_update(uint8_t crc, const void *data, uint32_t length);
  33 void crc8_xor_sbuf_append(struct sbuf_s *dst, uint8_t *start);
  34
  35 uint8_t crc8(uint8_t crc, uint8_t a);
  36 uint8_t crc8_update(uint8_t crc, const void *data, uint32_t length);
  37
  38 uint8_t crc8_sum_update(uint8_t crc, const void *data, uint32_t length);