1. 实验任务
利用取表的方法,
使端口P1做单一灯的变化:左移2次,右移2次,闪烁2次(延时的时间0.2秒)。
C语言源程序
#include <AT89X51.H>
unsigned char code
table[]=
{0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />7f,
0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f,
0x7f,0xbf,0xdf,0xef,
0xf7,0xfb,0xfd,0xfe,
0x7f,0xbf,0xdf,0xef,
0xf7,0xfb,0xfd,0xfe,
0x00,0xff,0x00,0xff,
0x01};
unsigned char i;
void delay(void)
{
unsigned char m,n,s;
for(m=20;m>0;m--)
for(n=20;n>0;n--)
for(s=248;s>0;s--);
}
void main(void)
{
while(1)
{
if(table!=0x01)
{
P1=table;
i++;
delay();
}
else
{
i=0;
}
}
}
这表
table[]=
{0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f,
0xfe,0xfd,0xfb,0xf7,
0xef,0xdf,0xbf,0x7f,
0x7f,0xbf,0xdf,0xef,
0xf7,0xfb,0xfd,0xfe,
0x7f,0xbf,0xdf,0xef,
0xf7,0xfb,0xfd,0xfe,
0x00,0xff,0x00,0xff,
0x01};
怎样建立的与左移2次,右移2次,闪烁2次的关系的!????
请求师兄们指点。。。。。。。。。。。。。。不胜感谢!!期待中。。。。。
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