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new crc16 option used with Philips toothbrushes. different init value 0x49a3. Should be reported to the CRC catalog https://reveng.sourceforge.io/crc-catalogue/16.htm

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iceman1001 2023-06-10 12:17:56 +02:00
commit f1d78c4e7c
2 changed files with 18 additions and 9 deletions
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4
common/crc16.h
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@ -42,6 +42,7 @@ typedef enum {
CRC_KERMIT,
CRC_XMODEM,
CRC_CRYPTORF,
CRC_PHILIPS,
} CrcType_t;
uint16_t update_crc16_ex(uint16_t crc, uint8_t c, uint16_t polynomial);
@ -78,6 +79,9 @@ uint16_t crc16_iclass(uint8_t const *d, size_t n);
// ie: uidcrc = 0x78 then initial_value == 0x7878
uint16_t crc16_legic(uint8_t const *d, size_t n, uint8_t uidcrc);
// Calculate CRC-16/ Philips.
uint16_t crc16_philips(uint8_t const *d, size_t n);
// table implementation
void init_table(CrcType_t crctype);
void reset_table(void);