查表法:
INT8U ReversalTbl[] = {0x00, 0x08, 0x04, 0x0c, 0x02, 0x0a, 0x06, 0x0e, 0x01, 0x09, 0x05, 0x0d, 0x03, 0x0b, 0x07, 0x0f};
INT8U ReversalFun(INT8U input)
{
INT8U output;
INT8U byte_h = Reversal[input / 16]; //高8位查表
INT8U byte_l = Reversal[input % 16]; // 低8位查表
output = byte_l * 16 + byte_h; //交叉代替
return output;
}
移位法:(C51)
INT8U bdata InData;
sbit Bit_L = InData^0;
INT8U ReversalFun(INT8U input)
{
INT8U i;
INT8U output = 0;
InData = input;
for (i=0; i<8; i++){
output = output << 1; //输出数据初始为0,左移1位仍为0
output += (INT8U)Bit_L;
InData = InData >> 1;
}
return output;
}
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