test.c

使用winavr＋studio进行开发的测试程序

#include <avr/io.h>

#define uint  unsigned int
#define uchar unsigned char

uchar a=0x0f,b;
uchar mirror(uchar data);
int main(void)
{  
   uchar dat;
   dat=mirror(a);
   b=dat;
   while(1){};
}
uchar mirror(uchar data)
{
   uchar i,k=0;
   for(i=0;i<8;i++)
    {
        if(data&0x80)//从高位传送因此字节会翻转 不可改为从低位传送*******
		   {
		     k|=(1<<i);
           }
        else
           {
		     k&=~(1<<i);
           }
		data<<=1;
	}
   return k;
}