Real-Time Data Monitor (RTDM) Cumulative CRC16 Function

`RTDM_CumulativeCrc16()`

Description

This function calculates the polynomial for the checksum byte.

There are two approaches to calculating this number:

“On-the-fly” every time saves code space because no const table is required. This approach saves code space but yields slower throughput performance.
Use a coefficients table. This approach has faster performance but consumes a higher amount of program memory.

Include

RTDM.h
RTDMUSER.h

Prototype

unsigned int RTDM_CumulativeCrc16 (unsigned char *buf, 
                                   unsigned int u16Length, 
                                   unsigned int u16CRC      );

Arguments

`unsigned char *buf`	A pointer to the state memory for the data to be used on the checksum calculation
`unsigned int u16Length`	Number of bytes to be computed
`unsigned int u16CRC`	Polynomial value used to calculate the CRC16 checksum

Return Value

CRC16 checksum value

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