16 lines
511 B
C
16 lines
511 B
C
|
#include "maxim_crc.h"
|
||
|
|
||
|
uint8_t maxim_crc8(const uint8_t* data, const uint8_t data_size, const uint8_t crc_init) {
|
||
|
uint8_t crc = crc_init;
|
||
|
|
||
|
for(uint8_t index = 0; index < data_size; ++index) {
|
||
|
uint8_t input_byte = data[index];
|
||
|
for(uint8_t bit_position = 0; bit_position < 8; ++bit_position) {
|
||
|
const uint8_t mix = (crc ^ input_byte) & (uint8_t)(0x01);
|
||
|
crc >>= 1;
|
||
|
if(mix != 0) crc ^= 0x8C;
|
||
|
input_byte >>= 1;
|
||
|
}
|
||
|
}
|
||
|
return crc;
|
||
|
}
|