lcx_crc.h

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CRC (Cyclic Redundancy Check). More...

Macros
#define	CX_CRC16_INIT   0xFFFF
	CRC16 initial value. More...

Functions
uint16_t	cx_crc16 (const void *buffer, size_t len)
	Computes a 16-bit checksum value. More...
uint16_t	cx_crc16_update (uint16_t crc, const void *buffer, size_t len)
	Accumulates more data to CRC. More...

Detailed Description

CRC (Cyclic Redundancy Check).

CRC-16 is a variant of CRC, an error-detecting code, with a 16-bit long check value.

Macro Definition Documentation

CX_CRC16_INIT

#define CX_CRC16_INIT   0xFFFF

CRC16 initial value.

Function Documentation

cx_crc16()

uint16_t cx_crc16	(	const void *	buffer,
		size_t	len
)

Computes a 16-bit checksum value.

The 16-bit value is computed according to the CRC16 CCITT definition.

Parameters

[in]	buffer	The buffer to compute the CRC over.
[in]	len	Bytes length of the buffer.

Returns

Current CRC value.

cx_crc16_update()

uint16_t cx_crc16_update	(	uint16_t	crc,
		const void *	buffer,
		size_t	len
)

Accumulates more data to CRC.

Parameters

[in]	crc	CRC value to be updated.
[in]	buffer	The buffer to compute the CRC over.
[in]	len	Bytes length of the buffer.

Returns

Updated CRC value.

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