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| //名称：8×8LED点阵屏仿电梯数字滚动显示
//说明：本例模拟了电梯显示屏上下滚动显示楼层的效果，当目标楼层大于
//当前楼层时，将向上滚动显示，反之则向下滚动显示。
#include <reg51.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar code Table[]=
{
0x3C,0x42,0x42,0x42,0x42,0x42,0x42,0x3C,//0
0x18,0x38,0x78,0x18,0x18,0x18,0x18,0x18,//1
0x00,0x7E,0x02,0x02,0x7E,0x40,0x40,0x7E,//2
0x00,0x7E,0x02,0x02,0x7E,0x02,0x02,0x7E,//3
0x00,0x48,0x48,0x48,0x7E,0x08,0x08,0x08,//4
0x00,0x7E,0x40,0x40,0x7E,0x02,0x02,0x7E,//5
0x00,0x7C,0x40,0x40,0x7C,0x44,0x44,0x7C,//6
0x00,0x7C,0x04,0x04,0x04,0x04,0x04,0x04,//7
0x00,0x7C,0x44,0x44,0x7C,0x44,0x44,0x7C,//8
0x00,0x7E,0x42,0x42,0x7E,0x02,0x02,0x7E,//9
};
uint r= 0;
char offset = 0;
uchar Current_Level = 1,Dest_Level=1,x=0,t =0;
void main()
{
P3 = 0x80;
Current_Level = 1;//从1开始显示
TMOD = 0x01; //T0工作方式
TH0 = -4000/256;//4ms//每个数字有8字节
TL0 = -4000%256;
TR0=1;
IE = 0x82;
EA =1;
while(1);
}
void Led\_Dispaly() interrupt 1
{
uchar i;
//在停止滚动时，如果有按键按下，则判断目标楼层
if (P1 != 0xff && Current_Level == Dest_Level )
{
if (P1 ==0xfe)Dest_Level =5;
if (P1 ==0xfd)Dest_Level =4;
if (P1 ==0xfb)Dest_Level =3;
if (P1 ==0xf7)Dest_Level =2;
if (P1 ==0xef)Dest_Level =1;
}
TH0 = -4000/256;//4ms
TL0 = -4000%256;
P3 =\_crol\_(P3,1);
i = Current_Level \*8 + r + offset;
P0 = ~Table[i];
//上升显示
if (Current_Level < Dest_Level )
{
if ( ++r ==8)
{//每个数字有8字节
r =0;
if( ++x ==4)
{//每完成x次刷新后后偏
x = 0;
if(++offset ==8)
{
offset = 0;
Current_Level++;
}
}
}
}
//下降显示
else if(Current_Level > Dest_Level )
{
if ( ++r ==8)
{//每个数字有8字节
r =0;
if( ++x ==4)
{//每完成x次刷新后前偏
x = 0;
if(--offset == -8)
{
offset = 0;
Current_Level--;
}
}
}
}
//停止滚动，保持稳定的刷新显示
else
{
if ( ++r ==8) r =0;
}
}
|
