kopia lustrzana https://github.com/Schildkroet/GRBL-Advanced
88 wiersze
2.8 KiB
C
88 wiersze
2.8 KiB
C
/*
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CRC.h - Simple library to calculate 8-, 16-, and 32-Bit CRC
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Copyright (c) 2018 Patrick F.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef CRC_H_INCLUDED
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#define CRC_H_INCLUDED
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define RUNTTIME 0
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#define TABLE 1
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#define HARDWARE 2
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/* ---------- Defines for 8-bit SAE J1850 CRC calculation (Not reflected) ------------------------------------------------------- */
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#define CRC_8_RESULT_WIDTH 8u
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#define CRC_8_POLYNOMIAL 0x1Du
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#define CRC_8_INIT_VALUE 0xFFu
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#define CRC_8_XOR_VALUE 0xFFu
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#define CRC_8_MODE TABLE
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/* ---------- Defines for 16-bit CCITT CRC calculation (Not reflected) ---------------------------------------------------------- */
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#define CRC_16_RESULT_WIDTH 16u
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#define CRC_16_POLYNOMIAL 0x1021u
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#define CRC_16_INIT_VALUE 0xFFFFu
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#define CRC_16_XOR_VALUE 0x0000u
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#define CRC_16_MODE RUNTTIME
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/* ---------- Defines for 32-bit CCITT CRC calculation (Reflected) -------------------------------------------------------------- */
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#define CRC_32_RESULT_WIDTH 32u
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#define CRC_32_POLYNOMIAL 0x04C11DB7u
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#define CRC_32_INIT_VALUE 0xFFFFFFFFu
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#define CRC_32_XOR_VALUE 0xFFFFFFFFu
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#define CRC_32_MODE RUNTTIME
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void CRC_Init(void);
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/**
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* This function makes a CRC8 calculation on Length data bytes with SAEJ1850 parameters
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*
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* RETURN VALUE: 8 bit result of CRC calculation
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*/
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uint8_t CRC_CalculateCRC8(const uint8_t *Buffer, uint16_t Length);
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/**
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* This function makes a CRC16 calculation on Length data bytes
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*
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* RETURN VALUE: 16 bit result of CRC calculation
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*/
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uint16_t CRC_CalculateCRC16(const uint8_t *Buffer, uint16_t Length);
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/**
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* This function makes a CRC32 calculation on Length data bytes
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*
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* RETURN VALUE: 32 bit result of CRC calculation
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*/
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uint32_t CRC_CalculateCRC32(const uint8_t *Buffer, uint16_t Length);
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#ifdef __cplusplus
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}
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#endif
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#endif // CRC_H_INCLUDED
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