Hi Sir,
May I know how to implement the CRC function of TMP126?
Is there any application note for CRC function?
Thanks.
Hi Peter,
Please find attached c code for the CRC implementation of the TMP126. I also included a snapshot of the CRC being verified with a datablock length of 2.
#include <stdio.h>
void main(int argc, char *argv[]){
unsigned short crc = 0xFFFF;
unsigned int msg[20];
int msglen = (argc > 1) ? (argc - 1) : 1;
msg[0] = 0x0CE8;
for (int i = 1; i < argc; i++){
sscanf(argv[i], "%X", &msg[i-1]);
}
for (int byte = 0; byte < msglen; byte++){
crc ^= msg[byte];
printf("msgbyte: 0x%X\n", msg[byte]);
for (int bit = 0; bit < 16; bit++){
// printf("crc: 0x%X byte: %d bit: %d\n", crc, byte, bit);
if (crc & 0x8000)
crc = (crc << 1) ^ 0x1021;
else
crc = (crc << 1);
}
}
printf("crc: 0x%X\n",crc);
}
Jalen