《单片机C语言程序设计实训100例—基于8051+Proteus仿真》案例
第 01 篇 基础程序设计
01    闪烁的LED
/*    名称：闪烁的LED
    说明：LED按设定的时间间隔闪烁
*/
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit LED=P1^0;
//延时
void DelayMS(uint x)
{
    uchar i;
    while(x--)
    {
        for(i=0;i<120;i++);
    }
}
//主程序
void main()
{
    while(1)
    {
        LED=~LED;
        DelayMS(150);
    }
}
02  从左到右的流水灯
/*    名称：从左到右的流水灯
    说明：接在P0口的8个LED从左到右循环依次点亮.产生走马灯效果
*/
#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
//延时
void DelayMS(uint x)
{
    uchar i;
    while(x--)
    {
        for(i=0;i<120;i++);
    }
}
单片机编程100例详解//主程序
void main()
{
    P0=0xfe;
    while(1)
    {
        P0=_crol_(P0,1); //P0的值向左循环移动
        DelayMS(150);
    }
}
03  8只LED左右来回点亮
/*    名称：8只LED左右来回点亮
    说明：程序利用循环移位函数_crol_和_cror_形成来回滚动的效果
*/
#include<reg51.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
//延时
void DelayMS(uint x)
{
    uchar i;
    while(x--)
    {
        for(i=0;i<120;i++);
    }
}
//主程序
void main()
{
    uchar i;
    P2=0x01;
    while(1)
    {
        for(i=0;i<7;i++)
        {
            P2=_crol_(P2,1); //P2的值向左循环移动
            DelayMS(150);
        }
        for(i=0;i<7;i++)
        {
            P2=_cror_(P2,1); //P2的值向右循环移动
            DelayMS(150);
        }
    }
}
04  花样流水灯
/*    名称：花样流水灯
    说明：16只LED分两组按预设的多种花样变换显示
*/
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
uchar code Pattern_P0[]=
{
0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,
0xaa,0x55,0x18,0xff,0xf0,0x0f,0x00,0xff,0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,
0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,0xff,0x00,0x00,0xff,0xff,0x0f,0xf0,0xff,
0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,
0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,
0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff
};
uchar code Pattern_P2[]=
{
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0xff,
0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,
0xaa,0x55,0x18,0xff,0xf0,0x0f,0x00,0xff,0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,
0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,0xff,0x00,0x00,0xff,0xff,0x0f,0xf0,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,
0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,
0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff
};
//延时
void DelayMS(uint x)
{
    uchar i;
    while(x--)
    {
        for(i=0;i<120;i++);
    }
}
//主程序
void main()
{
    uchar i;
    while(1)
    {    //从数组中读取数据送至P0和P2口显示
        for(i=0;i<136;i++)
        {
            P0=Pattern_P0[i];
            P2=Pattern_P2[i];
            DelayMS(100);
        }
    }
}
05  LED模拟交通灯
/*    名称：LED模拟交通灯
    说明：东西向绿灯亮若干秒.黄灯闪烁5次后红灯亮. 红灯亮后.南北向由红灯变为绿灯.若干秒后南北向黄灯闪烁5此后变红灯.东西向变绿灯.如此重复。
*/
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int
sbit RED_A=P0^0;      //东西向灯
sbit YELLOW_A=P0^1;
sbit GREEN_A=P0^2;
sbit RED_B=P0^3;      //南北向灯
sbit YELLOW_B=P0^4;
sbit GREEN_B=P0^5;
uchar Flash_Count=0,Operation_Type=1; //闪烁次数.操作类型变量
//延时
void DelayMS(uint x)
{
    uchar i;
    while(x--) for(i=0;i<120;i++);
}
//交通灯切换
void Traffic_Light()
{
    switch(Operation_Type)
    {
        case 1:    //东西向绿灯与南北向红灯亮
                RED_A=1;YELLOW_A=1;GREEN_A=0;
                RED_B=0;YELLOW_B=1;GREEN_B=1;
                DelayMS(2000);
                Operation_Type=2;

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