7-动态数码管实验.zip

#include<regx52.h> //定义数码管位选信号控制脚 sbit LSA=P2^2; sbit LSB=P2^3; sbit LSC=P2^4; //共阴极数码管显示0~F的段码数据 //u8 gsmg_code[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, // 0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0xff}; //unsigned char code led[]={0x5b,0x5b,0x3f,0x4f,0x06,0x07,0x06,0x6d}; unsigned char code led[]={0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x7c,0x5b,0x5b,0x3f,0x4f,0x06,0x07,0x06,0x6d, 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; void delay_10us(unsigned int ten_us) { while(ten_us--); } void smg_display(void) { unsigned char i,j,num; for(num=0;num<17;num++) //一共显示17屏 for(j=0;j<110;j++) //一屏幕扫110次 for(i=0;i<8;i++) { switch(7-i)//位选 { case 0: LSC=1;LSB=1;LSA=1;break; case 1: LSC=1;LSB=1;LSA=0;break; case 2: LSC=1;LSB=0;LSA=1;break; case 3: LSC=1;LSB=0;LSA=0;break; case 4: LSC=0;LSB=1;LSA=1;break; case 5: LSC=0;LSB=1;LSA=0;break; case 6: LSC=0;LSB=0;LSA=1;break; case 7: LSC=0;LSB=0;LSA=0;break; } P1=led[num+i];//传送段选数据 delay_10us(100);//延时一段时间，等待显示稳定 P1=0x00;//共阴消影 } } void main() { while(1) { smg_display(); } }