51单片机控制单圈广告灯 满意加高分
我做了程序和电路图了，帮我看下哪里出错了。程序是keil调试后有2个警告，电路图我还不知道是不是这样。。。要求是：正向反向流水就行了，跪求程序：#include"reg51.h"#define uchar unsigned char
#define uint unsigned int
const tab[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
const tab3[]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
void delay(void)
{
uint i;
for(i=0;i<25530;i++);
}
void main(void)
{
uchar x;
while(1)
{ for(x=0;x<8;x++)
{P0=tab;
delay();}
P0=0xff;
for(x=0;x<8;x++)
{P2=tab;
delay();}
P2=0xff; for(x=0;x<8;x++)
{P2=tab3;
delay();}
P2=0xff;
for(x=0;x<8;x++)
{P0=tab3;
delay();}
P0=0xff;
}
}
电路图
来自搜搜问问
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