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  1. #include <stdint.h>
  2. #include <iostream>
  3.  
  4. using namespace std;
  5.  
  6.  
  7. unsigned char tablica[10] = {3, 54, 21, 0, 0, 0, 0, 0, 10, 247};  
  8.  
  9. #define POLY 0x8408   /* 1021H bit reversed */
  10.  
  11.  
  12. unsigned int uiCrc16Cal (unsigned  char * buf, uint16_t length) {
  13.  
  14.       unsigned char i;
  15.       uint16_t data;
  16.       uint16_t crc = 0xffff;
  17.  
  18.       if (length == 0)
  19.         return (~crc);
  20.       do
  21.       {
  22.         for (i=0, data=(uint16_t)0xff & *buf++;
  23.          i < 8;
  24.          i++, data >>= 1)
  25.         {
  26.           if ((crc & 0x0001) ^ (data & 0x0001))
  27.             crc = (crc >> 1) ^ POLY;
  28.           else  crc >>= 1;
  29.         }
  30.       } while (--length);
  31.       crc = ~crc;
  32.  
  33.       return (crc);
  34. }
  35.  
  36. int main() {
  37. 	uint16_t crc = uiCrc16Cal(tablica, 8);
  38. 	cout << (crc & 0x00FF) << " ";
  39. 	cout << ((crc & 0xFF00) >> 8) << " ";
  40. }
Success #stdin #stdout 0s 5324KB
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19 209
https://ideone.com/1k0yWF
language:
C++14 (gcc 8.3)
created:
3 hours ago
visibility:
public

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