按二进制格式颠倒各个位顺序：0xAA(10101010) -> 0x55(0x01010101)

颠倒各个位顺序

unsigned int revert(unsigned char data)
{
    const unsigned char table[] = {0, 2, 1, 3}; 
    unsigned int revert = (table[data >> 6]) | (table[(data & 0x30) >> 4] << 2)
        | (table[(data & 0x0c) >> 2] << 4) | (table[data & 0x03] << 6); 

    return revert;
}