SRI4K-A3T/1GE STMicroelectronics, SRI4K-A3T/1GE Datasheet - Page 37

• Manufacturer Part Number: SRI4K-A3T/1GE
• Manufacturer: STMicroelectronics

Specifications of SRI4K-A3T/1GE

• Operating Temperature (max): 85C
• Operating Temperature Classification: Commercial
• Lead Free Status / Rohs Status: Compliant

APPENDIX A. ISO14443 TYPE B CRC CALCULATION
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#define BYTE unsigned char
#define USHORT unsigned short
unsigned short UpdateCrc(BYTE ch, USHORT
*lpwCrc)
{
8)^((USHORT)ch<<3)^((USHORT)ch>>4);
}
void ComputeCrc(char *Data, int Length,
BYTE *TransmitFirst, BYTE *TransmitSecond)
{
BYTE chBlock; USHORTt wCrc;
ch = (ch^(BYTE)((*lpwCrc) & 0x00FF));
ch = (ch^(ch<<4));
*lpwCrc = (*lpwCrc >> 8)^((USHORT)ch <<
return(*lpwCrc);
wCrc = 0xFFFF; // ISO 3309
do
{
0xFF);
}
int main(void)
{
BYTE BuffCRC_B[10] = {0x0A, 0x12, 0x34,
0x56}, First, Second, i;
+ 1”);
&Second);
%02X.”, First, Second);
wCrc = ~wCrc; // ISO 3309
*TransmitFirst = (BYTE) (wCrc & 0xFF);
*TransmitSecond = (BYTE) ((wCrc >> 8) &
return;
printf("Crc-16 G(x) = x^16 + x^12 + x^5
printf("CRC_B of [ ");
for(i=0; i<4; i++)
ComputeCrc(BuffCRC_B, 4, &First,
printf("] Transmitted: %02X then
return(0);
chBlock = *Data++;
UpdateCrc(chBlock, &wCrc);
} while (--Length);
printf("%02X ",BuffCRC_B[i]);
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