69 lines
1.7 KiB
C
69 lines
1.7 KiB
C
/**
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* \file crc32.h
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* Functions and types for CRC checks.
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*
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* Generated on Sat Sep 25 18:06:37 2010,
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* by pycrc v0.7.1, http://www.tty1.net/pycrc/
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* using the configuration:
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* Width = 32
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* Poly = 0x04c11db7
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* XorIn = 0xffffffff
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* ReflectIn = True
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* XorOut = 0xffffffff
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* ReflectOut = True
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* Algorithm = table-driven
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* Direct = True
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*****************************************************************************/
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#ifndef __CRC___H__
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#define __CRC___H__
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#include <arm/NXP/LPC17xx/LPC17xx.h>
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#include <stdlib.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* The definition of the used algorithm.
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*****************************************************************************/
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#define CRC_ALGO_TABLE_DRIVEN 1
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/**
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* Calculate the initial crc value.
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*
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* \return The initial crc value.
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*****************************************************************************/
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static inline uint32_t crc_init(void)
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{
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return 0xffffffff;
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}
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/**
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* Update the crc value with new data.
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*
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* \param crc The current crc value.
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* \param data Pointer to a buffer of \a data_len bytes.
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* \param data_len Number of bytes in the \a data buffer.
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* \return The updated crc value.
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*****************************************************************************/
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uint32_t crc32_update(uint32_t crc, const unsigned char data);
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/**
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* Calculate the final crc value.
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*
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* \param crc The current crc value.
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* \return The final crc value.
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*****************************************************************************/
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static inline uint32_t crc32_finalize(uint32_t crc)
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{
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return crc ^ 0xffffffff;
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}
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#ifdef __cplusplus
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} /* closing brace for extern "C" */
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#endif
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#endif /* __CRC___H__ */
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