Decagon Devices GS3 Посібник - Сторінка 12

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GS3 Integrator Guide

DDI-SERIAL CHECKSUM

Here is an example of how to calculate the checksum (crc) in C. In this case, the string passed to the

function would be: "

<09>22.0

char CalculateChecksum(char

int length, sum = 0, i, crc;

// Finding the length of the response string

length = strlen(Response);

// Adding characters in the response together

for( i = 0; i < length; i++ )

sum += Response[i];

// Converting checksum to a printable character

crc = sum %

return

crc;

}

21.2

1302<0D>w

* Response){

+ 32;

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" and the returning value would be the character '

R34