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楼主 |
发表于 2012-3-29 22:33:14
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这一个按键还可以。 两个对比一下。
#include<reg51.h>
#define unit unsigned int
#define uchar unsigned char//宏定义
#include<intrins.h>
sbit key1=P2^0;
sbit key2=P2^1;
void delayms(unit);
void vary1();
void vary2();
void main ()
{
while(1)
{
uchar System_Mode;
if(key1==0)
System_Mode=1;
if(key2==0)
System_Mode=2;
switch(System_Mode)
{
case 1:
vary1();
break;
case 2:
vary2();
break;
default:
break;
}
}
}
void delayms(unit ms)
{
unit i,j;
for(i=ms;i>0;i--)
for(j=110;j>0;j--);
}
void vary1()
{
unit a;//定义循环用变量
uchar code table[]={
0xff,//全灭
0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,//依次逐个点亮
0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,//依次逐个叠加
0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,//依次逐个递减
0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,//依次逐个叠加
0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,//依次逐个递减
0x7e,0xbd,0xdb,0xe7,0xe7,0xdb,0xbd,0x7e,//两边靠拢后分开
0x7e,0x3c,0x18,0x00,0x00,0x18,0x3c,0x7e,//两边叠加后递减
0x7e,0xbd,0xdb,0xe7,0xe7,0xdb,0xbd,0x7e,//两边靠拢后分开
0x7e,0x3c,0x18,0x00,0x00,0x18,0x3c,0x7e,//两边叠加后递减
0x00,//全亮
};//定义循环用数据表格
{
a=0;//给a赋初值
while(1)//while循环
{
P1=table[a];//将a所在的table中的值赋给P1口
delayms(150);//1S延时子程序
a++;//a的值加一
if(a==74)//测试a是否等于42
a=0;//给a赋值
if(key2==0) break;
}
}
}
void vary2()
{
uchar aa;
aa=0xfe;
while(1)
{
P1=aa;
delayms(150);
aa=_crol_(aa,1);
if(key1==0) break;
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