kopia lustrzana https://github.com/markqvist/LibAPRS
19 wiersze
397 B
C
19 wiersze
397 B
C
// CRC-CCIT Implementation based on work by Francesco Sacchi
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#ifndef CRC_CCIT_H
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#define CRC_CCIT_H
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#include <stdint.h>
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#include <avr/pgmspace.h>
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#define CRC_CCIT_INIT_VAL ((uint16_t)0xFFFF)
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extern const uint16_t crc_ccit_table[256];
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inline uint16_t update_crc_ccit(uint8_t c, uint16_t prev_crc) {
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return (prev_crc >> 8) ^ pgm_read_word(&crc_ccit_table[(prev_crc ^ c) & 0xff]);
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}
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#endif
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