Gustavo González / SimpleModbusSlave

SimpleModbusSlave allows you to communicate to any slave using the Modbus RTU protocol. The crc calculation is based on https://os.mbed.com/users/jpelletier/code/CRC/ The functions implemented are functions 3 and 16. read holding registers and preset multiple registers of the Modbus RTU Protocol. This implementation DOES NOT fully comply with the Modbus specifications.

lib_crc.h@1:85e226914fb7, 2017-10-25 (annotated)

Committer:
gugani
Date:
Wed Oct 25 10:38:11 2017 +0000
Revision:
1:85e226914fb7
Parent:
0:7c5265097fd2 
Initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
gugani 0:7c5265097fd2 1 #ifndef _LIB_CRC_H_
gugani 0:7c5265097fd2 2 #define _LIB_CRC_H_
gugani 0:7c5265097fd2 3
gugani 0:7c5265097fd2 4 #include <stdint.h>
gugani 0:7c5265097fd2 5
gugani 0:7c5265097fd2 6 #define CRC_VERSION "2.0"
gugani 0:7c5265097fd2 7
gugani 0:7c5265097fd2 8 uint16_t update_crc16_reflected( uint16_t *table, uint16_t crc, char c );
gugani 0:7c5265097fd2 9 uint16_t update_crc16_A001( uint16_t crc, char c );
gugani 0:7c5265097fd2 10 uint16_t calculate_crc16_Modbus(char *p, unsigned int length);
gugani 0:7c5265097fd2 11
gugani 0:7c5265097fd2 12 #endif /* _LIB_CRC_H_ */