#include <stdint.h>
#include <stdbool.h>

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Functions
void	wait (uint16_t millis)

char	hexChar (uint8_t value)

uint16_t	crcInit ()

uint16_t	crcByte (uint16_t crc, uint8_t data)

uint16_t	crcData (uint16_t crc, const uint8_t *pData, uint8_t length)

uint16_t	crcDataP (uint16_t crc, const uint8_t *pData, uint8_t length)

Function Documentation

uint16_t crcByte	(	uint16_t	crc,
		uint8_t	data
	)

Add a byte to an ongoing CRC calculation

Update the CRC value with an additional data byte.

Parameters

crc	the current CRC value
data	the data byte to add to the calculation

Returns: the updated CRC value.

Definition at line 44 of file crc16.c.

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uint16_t crcData	(	uint16_t	crc,
		const uint8_t *	pData,
		uint8_t	length
	)

Add a block of data to an ongoing CRC calculation

Add a sequence of bytes from a buffer in RAM. Note that this function can process up to 255 bytes in a single call (which is usually enough for a microcontroller application).

Parameters

crc	the current CRC value
pData	pointer to the memory buffer
length	the number of bytes to process.

Returns: the updated CRC value.

Definition at line 74 of file crc16.c.

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uint16_t crcDataP	(	uint16_t	crc,
		const uint8_t *	pData,
		uint8_t	length
	)

Add a block of data to an ongoing CRC calculation

Add a sequence of bytes from a buffer in PROGMEM. Note that this function can process up to 255 bytes in a single call (which is usually enough for a microcontroller application).

Parameters

crc	the current CRC value
pData	pointer to the memory location.
length	the number of bytes to process.

Returns: the updated CRC value.

Definition at line 92 of file crc16.c.

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uint16_t crcInit ( )

Initialise the CRC calculation

Initialises the CRC value prior to processing data.

Returns: the initial CRC value.

Definition at line 31 of file crc16.c.

char hexChar ( uint8_t value )

Convert the low four bits of a byte value into an upper case hex digit.

Parameters

value the value to convert

Returns: the ASCII code for the appropriate hex digit.

Definition at line 37 of file utility.c.

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void wait ( uint16_t millis )

An inaccurate delay function

This function will delay for the given number of milliseconds. This is not an accurate delay (interrupt activity will interfere with the timing and it uses instruction timing approximations to consume the time) but should be close enough for many purposes without having to revert to a timer interrupt.

Definition at line 21 of file utility.c.

Functions

Function Documentation