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35 lines
878 B
C
35 lines
878 B
C
#ifndef CRC_H
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#define CRC_H
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#define CCITT_POLY 0x1021
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#define MODBUS_POLY 0x8005
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#define MODBUS_POLY_REF 0xa001
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#define BROTHER_POLY 0x000201
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struct crcspec
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{
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unsigned width;
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uint64_t poly;
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uint64_t init;
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uint64_t xorout;
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bool refin;
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bool refout;
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};
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extern uint64_t generic_crc(const struct crcspec& spec, const Bytes& bytes);
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extern uint16_t sumBytes(const Bytes& bytes);
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extern uint8_t xorBytes(const Bytes& bytes);
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extern uint16_t crc16(uint16_t poly, uint16_t init, const Bytes& bytes);
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extern uint16_t crc16ref(uint16_t poly, uint16_t init, const Bytes& bytes);
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extern uint32_t crcbrother(const Bytes& bytes);
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static inline uint16_t crc16(uint16_t poly, const Bytes& bytes)
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{ return crc16(poly, 0xffff, bytes); }
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static inline uint16_t crc16ref(uint16_t poly, const Bytes& bytes)
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{ return crc16ref(poly, 0xffff, bytes); }
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#endif
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