《单片机C语言程序设计实训100例—基于8051+Proteus仿真》案例

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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

#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 #include

#define uchar unsigned char #define uint unsigned int //延时

void DelayMS(uint x) {

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uchar i; while(x--) { for(i=0;i<120;i++); } }

//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 #include

#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);

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} 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

#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,

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) {

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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

#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++); }

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//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; break; case 2: //东西向黄灯闪烁，绿灯关闭 DelayMS(300); YELLOW_A=~YELLOW_A;GREEN_A=1; if(++Flash_Count!=10) return; //闪烁5次 Flash_Count=0; Operation_Type=3; break; case 3: //东西向红灯，南北向绿灯亮 RED_A=0;YELLOW_A=1;GREEN_A=1; RED_B=1;YELLOW_B=1;GREEN_B=0; DelayMS(2000); Operation_Type=4; break; case 4: //南北向黄灯闪烁5次 DelayMS(300); YELLOW_B=~YELLOW_B;GREEN_B=1; if(++Flash_Count!=10) return; Flash_Count=0; Operation_Type=1; } }

//主程序 void main() { while(1) Traffic_Light(); }

06 单只数码管循环显示0~9

/* 名称：单只数码管循环显示0~9 说明：主程序中的循环语句反复将0~9的段码送至P0口，使数字0~9循环显示 */

#include #include

#define uchar unsigned char

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