Name: SIYI MK15
Brand: SIYI
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MK15 User Manual V1.4

102

3) Bluetooth

4) MK15 RC Upgrade Port / MK32 RC Type-C Port (Virtual serial port based on USB port)

4.8.4 SDK CRC16 Check Code

const uint16_t crc16_tab[256];

/***********************************************************

CRC16 Coding & Decoding G(X) = X^16+X^12+X^5+1

***********************************************************/

uint16_t CRC16_cal(uint8_t *ptr, uint32_t len, uint16_t crc_init)

{

uint16_t crc, oldcrc16;

uint8_t temp;

crc = crc_init;

while (len--!=0)

{

temp=(crc>>8)&0xff;

oldcrc16=crc16_tab[*ptr^temp];

crc=(crc<<8)^oldcrc16;

ptr++;

}

//crc=~crc; //??

return(crc);

}

uint8_t crc_check_16bites(uint8_t* pbuf, uint32_t len,uint32_t* p_result)

{

uint16_t crc_result = 0;

crc_result= CRC16_cal(pbuf,len, 0);

*p_result = crc_result;

return 2;

}

const uint16_t crc16_tab[256]= {0x0,0x1021,0x2042,0x3063,0x4084,0x50a5,0x60c6,0x70e7,

0x8108,0x9129,0xa14a,0xb16b,0xc18c,0xd1ad,0xe1ce,0xf1ef,

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SIYI MK15 Specifications

General