1、单片机C语言程序设计实训100例单片机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#define uchar unsigned char#define uint unsigned intsbit LED=P10;/延时void DelayMS(uint x) uchar i; while(x-) for(i=0;i120;i+); /主程序void main() while(1) LED=LED; DelayMS(150); 02 从左到右的流水灯/* 名
2、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) uchar i; while(x-) for(i=0;i120;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_cro
3、l_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;i120;i+); /主程序void main() uchar i; P2=0x01; while(1) for(i=0;i7;i+) P2=_crol_(P2,1); /P2的值向左循环移动 DelayMS(150); for(i=0;i7;i+) P2=_cror_(P2,1); /P2的值向右循环移动 DelayM
4、S(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 intuchar 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, 0
5、xaa,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,0xe
6、f,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,0xf9,0x
7、f3,0xe7,0xcf,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,0xf
8、f,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
9、,0xff,0x00,0xff,0x00,0xff,0x00,0xff;/延时void DelayMS(uint x) uchar i; while(x-) for(i=0;i120;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;i136;i+) P0=Pattern_P0i; P2=Pattern_P2i; 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
10、西向变绿灯，如此重复。*/#include#define uchar unsigned char#define uint unsigned intsbit RED_A=P00; /东西向灯sbit YELLOW_A=P01;sbit GREEN_A=P02;sbit RED_B=P03; /南北向灯sbit YELLOW_B=P04;sbit GREEN_B=P05;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;i120;i+);/交通灯切
11、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;
12、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
13、码管循环显示09/* 名称：单只数码管循环显示09 说明：主程序中的循环语句反复将09的段码送至P0口，使数字09循环显示*/#include#include#define uchar unsigned char#define uint unsigned intuchar code DSY_CODE=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff;/延时void DelayMS(uint x) uchar t; while(x-) for(t=0;t120;t+);/主程序void main() uchar i=0; P0=0x00
14、; while(1) /* for(;i11;i+) P0=DSY_CODEi; DelayMS(300); /注:另一方案 */ P0=DSY_CODEi; i=(i+1)%10; DelayMS(300); 07 8只数码管滚动显示单个数字/* 名称：8只数码管滚动显示单个数字 说明：数码管从左到右依次滚动显示07，程序通过每次仅循环选通一只数码管*/#include#include#define uchar unsigned char#define uint unsigned intuchar code DSY_CODE=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x8
15、2,0xf8,0x80,0x90;/延时void DelayMS(uint x) uchar t; while(x-) for(t=0;t120;t+);/主程序void main() uchar i,wei=0x80; while(1) for(i=0;i8;i+) P2=0xff; /关闭显示 wei=_crol_(wei,1); P0=DSY_CODEi; /发送数字段码 P2=wei; /发送位码 DelayMS(300); 08 8只数码管动态显示多个不同字符电路如上图/* 名称：8只数码管动态显示多个不同字符 说明：数码管动态扫描显示07。*/#include#include#de
16、fine uchar unsigned char#define uint unsigned intuchar code DSY_CODE=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90;/延时void DelayMS(uint x) uchar t; while(x-) for(t=0;t120;t+);/主程序void main() uchar i,wei=0x80; while(1) for(i=0;i8;i+) P2=0xff; P0=DSY_CODEi; /发送段码 wei=_crol_(wei,1); P2=wei; /发送位码 D
17、elayMS(2); 09 8只数码管闪烁显示数字串电路如上图/* 名称：8只数码管闪烁显示数字串 说明：数码管闪烁显示由07构成的一串数字 本例用动态刷新法显示一串数字，在停止刷新时所有数字显示消失。*/#include#define uchar unsigned char#define uint unsigned int/段码表uchar code DSY_CODE=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90;/位码表uchar code DSY_IDX=0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80;
18、/延时void DelayMS(uint x) uchar t; while(x-) for(t=0;t120;t+);/主程序void main() uchar i,j; while(1) for(i=0;i30;i+) for(j=0;j8;j+) P0=0xff; P0=DSY_CODEj; /发送段码 P2=DSY_IDXj; /发送位码 DelayMS(2); P2=0x00; /关闭所有数码管并延时 DelayMS(1000); 10 8只数码管滚动显示数字串电路如上图/* 名称：8只数码管滚动显示数字串 说明：数码管向左滚动显示3个字符构成的数字串*/#include#inclu
19、de#define uchar unsigned char#define uint unsigned int/段码表uchar code DSY_CODE=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff;/下面数组看作环形队列，显示从某个数开始的8个数（10表示黑屏）uchar Num=10,10,10,10,10,10,10,10,2,9,8;/延时void DelayMS(uint x) uchar t; while(x-) for(t=0;t120;t+);/主程序void main() uchar i,j,k=0,m=0x8
20、0; while(1) /刷新若干次，保持一段时间的稳定显示 for(i=0;i15;i+) for(j=0;j8;j+) /发送段码，采用环形取法，从第k个开始取第j个 P0=0xff; P0=DSY_CODENum(k+j)%11; m=_crol_(m,1); P2=m; /发送位码 DelayMS(2); k=(k+1)%11; /环形队列首支针k递增，Num下标范围010，故对11取余 11 K1-K4 控制LED移位/* 名称：K1-K4 控制LED移位 说明：按下K1时，P0口LED上移一位； 按下K2时，P0口LED下移一位； 按下K3时，P2口LED上移一位； 按下K4时，P
21、2口LED下移一位；*/#include#include#define uchar unsigned char#define uint unsigned int/延时void DelayMS(uint x) uchar i; while(x-) for(i=0;i120;i+); /根据P1口的按键移动LEDvoid Move_LED() if (P1&0x10)=0) P0=_cror_(P0,1); /K1 else if(P1&0x20)=0) P0=_crol_(P0,1); /K2 else if(P1&0x40)=0) P2=_cror_(P2,1); /K3 else if(P1
22、&0x80)=0) P2=_crol_(P2,1); /K4/主程序void main() uchar Recent_Key; /最近按键 P0=0xfe; P2=0xfe; P1=0xff; Recent_Key=0xff; while(1) if(Recent_Key!=P1) Recent_Key=P1; /保存最近按键 Move_LED(); DelayMS(10); 12 K1-K4 按键状态显示/* 名称：K1-K4 按键状态显示 说明：K1、K2按下时LED点亮，松开时熄灭， K3、K4按下并释放时LED点亮，再次按下并释放时熄灭；*/#include#define uchar
23、unsigned char#define uint unsigned intsbit LED1=P00;sbit LED2=P01;sbit LED3=P02;sbit LED4=P03;sbit K1=P10;sbit K2=P11;sbit K3=P12;sbit K4=P13;/延时void DelayMS(uint x) uchar i; while(x-) for(i=0;i120;i+); /主程序void main() P0=0xff; P1=0xff; while(1) LED1=K1; LED2=K2; if(K3=0) while(K3=0); LED3=LED3; if(
24、K4=0) while(K4=0); LED4=LED4; DelayMS(10); 13 K1-K4 分组控制LED/* 名称：K1-K4 分组控制LED 说明：每次按下K1时递增点亮一只LED，全亮时再次按下则再次循环开始， K2按下后点亮上面4只LED，K3按下后点亮下面4只LED，K4按下后关闭所有LED*/#include#define uchar unsigned char#define uint unsigned int/延时void DelayMS(uint x) uchar i; while(x-) for(i=0;i4; k=0; /检查1所在位置，累加获取按键号k whi
25、le(Key_State!=0) k+; Key_State=1; /根据按键号k进行4种处理 switch(k) case 1: if(P0=0x00) P0=0xff; P0=1; DelayMS(200); break; case 2: P0=0xf0;break; case 3: P0=0x0f;break; case 4: P0=0xff; 14 K1-K4 控制数码管移位显示/* 名称：K1-K4 控制数码管移位显示 说明：按下K1时加1计数并增加显示位， 按下K2时减1计数并减少显示位， 按下K3时清零。*/#include#define uchar unsigned char#
26、define uint unsigned int/段码uchar code DSY_CODE=0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff;/位码uchar code DSY_Index=0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01;/待显示到各数码管的数字缓冲（开始仅在0位显示0，其他黑屏）uchar Display_Buffer=0,10,10,10,10,10,10,10;/延时void DelayMS(uint x) uchar i; while(x-) for(i=0;i120;i+); void Show_Count_ON_DSY
