SRI4K-SBN181GE STMICROELECTRONICS [STMicroelectronics], SRI4K-SBN181GE Datasheet - Page 41
SRI4K-SBN181GE
Manufacturer Part Number
SRI4K-SBN181GE
Description
13.56 MHz short-range contactless memory chip with 4096-bit EEPROM and anticollision functions
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.SRI4K-SBN181GE.pdf
(45 pages)
- Current page: 41 of 45
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SRI4K
Appendix A
#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;
}
int main(void)
{
BYTE BuffCRC_B[10] = {0x0A, 0x12, 0x34, 0x56}, First, Second, i;
ch = (ch^(BYTE)((*lpwCrc) & 0x00FF));
ch = (ch^(ch<<4));
*lpwCrc = (*lpwCrc >> 8)^((USHORT)ch <<
return(*lpwCrc);
wCrc = 0xFFFF; // ISO 3309
do
wCrc = ~wCrc; // ISO 3309
*TransmitFirst = (BYTE) (wCrc & 0xFF);
*TransmitSecond = (BYTE) ((wCrc >> 8) & 0xFF);
return;
printf("Crc-16 G(x) = x^16 + x^12 + x^5 + 1”);
printf("CRC_B of [ ");
for(i=0; i<4; i++)
ComputeCrc(BuffCRC_B, 4, &First, &Second);
printf("] Transmitted: %02X then %02X.”, First, Second);
return(0);
{
chBlock = *Data++;
UpdateCrc(chBlock, &wCrc);
} while (--Length);
printf("%02X ",BuffCRC_B[i]);
ISO-14443 Type B CRC calculation
ISO-14443 Type B CRC calculation
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