数码管的静态显示与动态显示

最新推荐文章于 2025-09-06 12:54:56 发布

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本文介绍了一种使用51单片机实现LED显示器静态显示和动态显示的方法。通过具体的C语言代码示例，展示了如何控制LED显示数字，并提供了延迟函数的实现细节。

1.静态显示（循环操作）

#include <reg52.h>
#include <intrins.h>

#define uchar unsigned char
#define uint unsigned int
#define initial 0xfe

sbit DU=P2^0;
sbit WE=P2^1;

sbit led0=P1^0;
sbit led1=P1^1;
sbit led2=P1^2;
sbit led3=P1^3;
sbit led4=P1^4;
sbit led5=P1^5;
sbit led6=P1^6;
sbit led7=P1^7;


sbit EN=P2^5;
sbit FM=P1^2;
sbit RST=P1^2;

uchar temp;
uchar num;
uint i;

uchar code dula[]={
	0x3f,0x06,0x5b,
	0x4f,0x66,0x6d,
	0x7d,0x07,0x7f,
	0x6f,0x77,0x7c,
	0x39,0x5e,0x79,
	0x71};

uchar code wela[]={
	0xfe,0xfd,0xfb,
	0xf7,0xef,0xdf,
	0xbf,0x7f
};

void delay1s(void);

void main() {
	temp=0xfe; //1111,1110
	while(1) {
		for(i=0;i<8;i++) {
			P0=wela[i];
			WE=1;
			WE=0;
		
			DU=1;
			P0=dula[i];
			DU=0;
			delay1s();
		}
	}
}

void delay1s(void)   //误差 0us
{
    unsigned char a,b,c;
    for(c=167;c>0;c--)
        for(b=171;b>0;b--)
            for(a=16;a>0;a--);
    _nop_();  //if Keil,require use intrins.h
}

2.动态显示

#include <reg52.h>
#include <intrins.h>

#define uchar unsigned char
#define uint unsigned int
#define initial 0xfe

sbit DU=P2^0;
sbit WE=P2^1;

sbit led0=P1^0;
sbit led1=P1^1;
sbit led2=P1^2;
sbit led3=P1^3;
sbit led4=P1^4;
sbit led5=P1^5;
sbit led6=P1^6;
sbit led7=P1^7;


sbit EN=P2^5; //P2.3 HL-1
sbit FM=P1^2; //LCD1602 插入1602后要初始化为0（关闭）
sbit RST=P1^2; //DS1302

uchar temp;
uchar num;
uint i;

uchar code dula[]={
	0x3f,0x06,0x5b,
	0x4f,0x66,0x6d,
	0x7d,0x07,0x7f,
	0x6f,0x77,0x7c,
	0x39,0x5e,0x79,
	0x71};

uchar code wela[]={
	0xfe,0xfd,0xfb,
	0xf7,0xef,0xdf,
	0xbf,0x7f
};

void delay10ms(void);

void main() {
	temp=0xfe; //1111,1110
	while(1) {
		for(i=0;i<8;i++) {
			P0=wela[i];
			WE=1;
			WE=0;
			
			DU=1;
			P0=dula[i];
			DU=0;
			//P0=0xff;
			delay10ms();
		}
	}
}

void delay10ms(void)   //误差 0us
{
    unsigned char a,b,c;
    for(c=1;c>0;c--)
        for(b=38;b>0;b--)
            for(a=130;a>0;a--);
}