仿真原理图:
程序运行图:
部分程序:
#include #define uchar unsigned char #define uint unsigned int uchar duan[10]={0xc0,0Xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //所需的段的位码 //uchar wei[4]={0XEf,0XDf,0XBf,0X7f}; //位的控制端 (开发板) uchar wei[4]={0X80,0X40,0X20,0X10}; //位的控制端 (仿真) uint z,x,c,v, date; //定义数据类型 uint dispcount=0; uint lck=0; uint disp=0; /****************************************************************** P2=wei[3]; P0=duan[v]; delay(50); } /************************************************************************* 定时器初值1ms **************************************************************************/ void initTimer(void) { TMOD=0x0; TH0=0xe3; TL0=0xc; } /************************************************************************* 定时器函数 **************************************************************************/ void timer0(void) interrupt 1 { TH0=0xe3; TL0=0xc; lck++; if(lck==1000) { disp=dispcount; lck=0; dispcount=0; } } /************************************************************************* 中断函数 **************************************************************************/ void int0(void) interrupt 0 { dispcount++; //每一次中断,计数加一 } /************************************************************************* 主函数 **************************************************************************/ void main(void) { IT0=1; //INT0下降沿中断 EX0=1; //允许INT1中断 initTimer(); //装入初值 TR0=1; ET0=1; EA=1; while(1) { date=disp; xianshi(); } }
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