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chg: most of the crc16 works.

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ISO14443 crc A  = crc16_a
ISO14443 crc B  = ...
ISO15693 crc    = crc16_x25
This commit is contained in:
iceman1001 2018-01-28 10:59:57 +01:00
commit e5804645f1
2 changed files with 96 additions and 27 deletions
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22
common/crc16.h
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@ -11,8 +11,26 @@
#include <stdint.h>
#include "util.h" // SwapBits
unsigned short update_crc16(unsigned short crc, unsigned char c);
uint16_t crc16(uint8_t const *message, int length, uint16_t remainder, uint16_t polynomial);
#define CRC16_POLY_CCITT 0x1021
#define CRC16_POLY 0x8408
uint16_t update_crc16_ex( uint16_t crc, uint8_t c, uint16_t polynomial );
uint16_t update_crc16(uint16_t crc, uint8_t c);
uint16_t crc16(uint8_t const *message, int length, uint16_t remainder, uint16_t polynomial, bool refin, bool refout);
uint16_t crc16_ccitt(uint8_t const *message, int length);
uint16_t crc16_ccitt_kermit(uint8_t const *message, int length);
uint16_t crc16_kermit(uint8_t const *message, int length);
uint16_t crc16_xmodem(uint8_t const *d, int n);
uint16_t crc16_x25(uint8_t const *d, int n);
uint16_t crc16_a(uint8_t const *d, int n);
bool check_crc16_ccitt(uint8_t const *d, int n);
//felica imp
void felica_test();
void init_crcccitt_tab( void );
uint16_t update_crc_ccitt( uint16_t crc,uint8_t c );
#endif