升級APP

升級Bootloader

CRC32原始碼計算

注： CRC-32使用MPEG_2多項式：0x04C11DB7

uint32_t uiCRC32_MPEG2(uint32_t *puiInitCRC, uint8_t *pucDataBuff, uint32_t uiLength)
{
    uint32_t uiPolynomial = 0x04C11DB7, uiInputCRC = 0xFFFFFFFF, i = 0;
    uint8_t ucMask = 0;

    if(puiInitCRC != NULL)
        uiInputCRC = *puiInitCRC;

    for(i = 0; i < uiLength; ++i)
    {
        uiInputCRC ^= (uint32_t)(*pucDataBuff++) << 24;

        for(ucMask = 1; ucMask; ucMask <<= 1)
        {
            if(uiInputCRC & 0x80000000)
                uiInputCRC = (uiInputCRC << 1) ^ uiPolynomial;
            else
                uiInputCRC <<= 1;
        }
    }

    return uiInputCRC;
}