mirror of
https://github.com/Ralim/IronOS.git
synced 2025-02-26 07:53:55 +00:00
19 lines
360 B
C++
19 lines
360 B
C++
|
|
#include "crc16.hpp"
|
|
#define POLYNOM 0x8005
|
|
unsigned int crc16(unsigned int crcValue, unsigned char newByte) {
|
|
unsigned char i;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
|
|
if (((crcValue & 0x8000) >> 8) ^ (newByte & 0x80)) {
|
|
crcValue = (crcValue << 1) ^ POLYNOM;
|
|
} else {
|
|
crcValue = (crcValue << 1);
|
|
}
|
|
|
|
newByte <<= 1;
|
|
}
|
|
|
|
return crcValue;
|
|
} |