kopia lustrzana https://github.com/SP8EBC/ParaTNC
28 wiersze
532 B
C
28 wiersze
532 B
C
/*
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* rtu_parser.h
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*
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* Created on: 27.08.2020
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* Author: mateusz
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*/
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#ifndef INCLUDE_MODBUS_RTU_RTU_PARSER_H_
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#define INCLUDE_MODBUS_RTU_RTU_PARSER_H_
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#include <stdint.h>
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inline uint16_t rtu_parser_stream_crc(uint16_t previous_crc, uint8_t current_data) {
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int i;
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previous_crc ^= (uint16_t)current_data;
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for (i = 0; i < 8; ++i) {
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if (previous_crc & 1)
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previous_crc = (previous_crc) ^ 0xA001;
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else
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previous_crc = (previous_crc >> 1);
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}
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return previous_crc;
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}
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#endif /* INCLUDE_MODBUS_RTU_RTU_PARSER_H_ */
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