13个简单的单片机程序

/* LED闪烁的简单试验 * 连接方法： JP11（P2）和JP1用8PIN排线连接起来 * */#include /此文件中定义了51的一些特殊功能寄存器void delay(unsigned int i); /声明延时函数main() P2 = 0x00; /置P0口为低电平 delay(600); / 延时 P2 = 0xff; /置P0口为高电平 delay(600); / 延时/*延时函数*/void delay(unsigned int i) unsigned char j; for(i; i 0; i-) for(j = 255; j 0; j-);/* LED闪烁的简单试验 * 延时实现p2口LED流水灯效果 （用循环移位指令） *连接方法： JP11（P2）和JP1(LED灯) 用8PIN排线连接起来 * */#include /此文件中定义了51的一些特殊功能寄存器#include void delayms(unsigned char ms)/ 延时子程序unsigned char i;while(ms-)for(i = 0; i 120; i+);main()unsigned char LED;LED = 0xfe; /0xfe = 1111 1110 while(1) P2 = LED; delayms(250); LED = LED 1; /循环右移1位，点亮下一个LED 为左移位 if(LED = 0x00 ) LED = 0xfe; / 0xfe = 1111 1110 /* * LED点阵实验(流动显示1 2 3 4 5 6 7 8 9) *说明 通过P0 和 P2 作为点阵接口 *要求学员掌握 LED点阵的工作原理和 各点阵脚的定义及接法，具体接线请参考接线说明 *我们采用的LED点阵式是低功耗，在做实验时可以用单片机脚直接驱动 */#includeunsigned char code tab=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f;unsigned char code digittab188=0x00,0x00,0x3e,0x41,0x41,0x41,0x3e,0x00, /00x00,0x00,0x00,0x00,0x21,0x7f,0x01,0x00, /10x00,0x00,0x27,0x45,0x45,0x45,0x39,0x00, /20x00,0x00,0x22,0x49,0x49,0x49,0x36,0x00, /30x00,0x00,0x0c,0x14,0x24,0x7f,0x04,0x00, /40x00,0x00,0x72,0x51,0x51,0x51,0x4e,0x00, /50x00,0x00,0x3e,0x49,0x49,0x49,0x26,0x00, /60x00,0x00,0x40,0x40,0x40,0x4f,0x70,0x00, /70x00,0x00,0x36,0x49,0x49,0x49,0x36,0x00, /80x00,0x00,0x32,0x49,0x49,0x49,0x3e,0x00, /90x00,0x00,0x7F,0x48,0x48,0x30,0x00,0x00, /P0x00,0x00,0x7F,0x48,0x4C,0x73,0x00,0x00, /R0x00,0x00,0x7F,0x49,0x49,0x49,0x00,0x00, /E0x00,0x00,0x3E,0x41,0x41,0x62,0x00,0x00, /C0x00,0x00,0x7F,0x08,0x08,0x7F,0x00,0x00, /H0x00,0x00,0x00,0xFF,0xFF,0x00,0x00,0x00, /I0x00,0x7F,0x10,0x08,0x04,0x7F,0x00,0x00, /N0x7C,0x48,0x48,0xFF,0x48,0x48,0x7C,0x00 /中;unsigned int timecount;unsigned char cnta;unsigned char cntb;void main(void)TMOD=0x01;TH0=(65536-3000)/256;TL0=(65536-3000)%256;TR0=1; /开启定时0ET0=1; EA=1; /开启中断cntb=0; while(1) ;/* 定时中断*/ void t0(void) interrupt 1 using 0 TH0=(65536-3000)/256; /定时器高位装载数据 TL0=(65536-3000)%256; /定时器低位装载数据 if(cntb=8) cnta=0; if(+timecount=333) timecount=0; if(+cntb=36)cntb=0; /*/* 按键状态显示试验 */* */* 连接方法：连接JP10（P0)与JP5（按钮接口) */* JP11 (P2)与JP1(LED接口) * */*按键则点亮LED灯，8路指示灯接p0口 */*/#include #include sbit BEEP = P15;sbit RELAY = P14;sbit K1 = P00; sbit K2 = P01;sbit K3 = P02; sbit K4 = P03;sbit K5 = P04; sbit K6 = P05;void beep();/*/main() while(1) P2 = 0xff; if(K1=0) P2 = 0xfe; if(K2 = 0) P2 = 0xfd; if(!K3) P2 = 0xfb; if(!K4) P2 = 0xf7; if (!K5 ) beep(); /喇叭发声 RELAY = 1; if (!K6 ) RELAY = 0; /通过了反相器 /*/void beep() unsigned char i , j; for (i=0;i100;i+) BEEP=!BEEP; /BEEP取反 for (j = 0 ; j250 ; j+) /需要产生方波 _nop_(); BEEP=1; /关闭蜂鸣器/* 按键控制程序 * 连接方法：JP10（P2） 与 JP1 （LED灯）连接， * JP11（P0） 与 JP5（按键接口）连接 * 开始点亮P1LED * 按P01 LED向右移一位 * 按P00 LED向左移一位 * 连续按动按钮LED会不停的左移或右移 */#include #include unsigned char scan_key();void proc_key(unsigned char key_v);void delayms(unsigned char ms);sbitK1 = P00;/对应按钮K1sbitK2 = P01;/对应按钮K2main()unsigned char key_s,key_v;key_v = 0x03;P2 = 0xfe;while(1)key_s = scan_key();if(key_s != key_v)delayms(10);key_s = scan_key();if(key_s != key_v)key_v = key_s;proc_key(key_v);unsigned char scan_key()unsigned char key_s;key_s = 0x00;key_s |= K2;key_s = 1;key_s |= K1;return key_s;void proc_key(unsigned char key_v)if(key_v & 0x01) = 0)P2 = _cror_(P2,1);else if(key_v & 0x02) = 0)P2 = _crol_(P2, 1);void delayms(unsigned char ms)/ 延时子程序unsigned char i;while(ms-)for(i = 0; i 120; i+);/*; 二进制加法试验*; p2口八个灯作二进制加法。理解二进值的计算 *; 硬件连接：p2口8路指示灯*;*;* 描述: *; p2口八个灯作二进制加法。理解二进值的计算 *;* 连接方法： JP11（P2）和JP1(LED灯) 用8PIN排线连接起来 */#include void delay(unsigned int i); /声明延时函数main() unsigned char Num = 0xff; while (1) P2 = Num; delay(1000); /延时函数 Num-; /*延时函数*/void delay(unsigned int i) unsigned char j; for(i; i 0; i-) for(j = 255; j 0; j-);/* 文件名 C51音乐程序(八月桂花) 功能 通过单片机演奏音乐 /*/ #include #include /本例采用89C52, 晶振为11.0592MHZ /关于如何编制音乐代码, 其实十分简单,各位可以看以下代码. /频率常数即音乐术语中的音调,而节拍常数即音乐术语中的多少拍; /所以拿出谱子, 试探编吧! sbit Beep = P15 ; unsigned char n=0; /n为节拍常数变量 unsigned char code music_tab = 0x18, 0x30, 0x1C , 0x10, /格式为: 频率常数, 节拍常数, 频率常数, 节拍常数, 0x20, 0x40, 0x1C , 0x10, 0x18, 0x10, 0x20 , 0x10, 0x1C, 0x10, 0x18 , 0x40, 0x1C, 0x20, 0x20 , 0x20, 0x1C, 0x20, 0x18 , 0x20, 0x20, 0x80, 0xFF , 0x20, 0x30, 0x1C, 0x10 , 0x18, 0x20, 0x15, 0x20 , 0x1C, 0x20, 0x20, 0x20 , 0x26, 0x40, 0x20, 0x20 , 0x2B, 0x20, 0x26, 0x20 , 0x20, 0x20, 0x30, 0x80 , 0xFF, 0x20, 0x20, 0x1C , 0x10, 0x18, 0x10, 0x20 , 0x20, 0x26, 0x20, 0x2B , 0x20, 0x30, 0x20, 0x2B , 0x40, 0x20, 0x20, 0x1C , 0x10, 0x18, 0x10, 0x20 , 0x20, 0x26, 0x20, 0x2B , 0x20, 0x30, 0x20, 0x2B , 0x40, 0x20, 0x30, 0x1C , 0x10, 0x18, 0x20, 0x15 , 0x20, 0x1C, 0x20, 0x20 , 0x20, 0x26, 0x40, 0x20 , 0x20, 0x2B, 0x20, 0x26 , 0x20, 0x20, 0x20, 0x30 , 0x80, 0x20, 0x30, 0x1C , 0x10, 0x20, 0x10, 0x1C , 0x10, 0x20, 0x20, 0x26 , 0x20, 0x2B, 0x20, 0x30 , 0x20, 0x2B, 0x40, 0x20 , 0x15, 0x1F, 0x05, 0x20 , 0x10, 0x1C, 0x10, 0x20 , 0x20, 0x26, 0x20, 0x2B , 0x20, 0x30, 0x20, 0x2B , 0x40, 0x20, 0x30, 0x1C , 0x10, 0x18, 0x20, 0x15 , 0x20, 0x1C, 0x20, 0x20 , 0x20, 0x26, 0x40, 0x20 , 0x20, 0x2B, 0x20, 0x26 , 0x20, 0x20, 0x20, 0x30 , 0x30, 0x20, 0x30, 0x1C , 0x10, 0x18, 0x40, 0x1C , 0x20, 0x20, 0x20, 0x26 , 0x40, 0x13, 0x60, 0x18 , 0x20, 0x15, 0x40, 0x13 , 0x40, 0x18, 0x80, 0x00 ; void int0() interrupt 1 /采用中断0 控制节拍 TH0=0xd8; TL0=0xef; n-; void delay (unsigned char m) /控制频率延时 unsigned i=3*m; while(-i); void delayms(unsigned char a) /豪秒延时子程序 while(-a); /采用while(-a) 不要采用while(a-); 各位可编译一下看看汇编结果就知道了! void main() unsigned char p,m; /m为频率常数变量 unsigned char i=0; TMOD&=0x0f; TMOD|=0x01; TH0=0xd8;TL0=0xef; IE=0x82; play: while(1) a: p=music_tabi; if(p=0x00) i=0, delayms(1000); goto play; /如果碰到结束符,延时1秒,回到开始再来一遍 else if(p=0xff) i=i+1;delayms(100),TR0=0; goto a; /若碰到休止符,延时100ms,继续取下一音符 else m=music_tabi+, n=music_tabi+; /取频率常数 和 节拍常数 TR0=1; /开定时器1 while(n!=0) Beep=Beep,delay(m); /等待节拍完成, 通过P1口输出音频(可多声道哦!) TR0=0; /关定时器1 /* (c) Copyright 2004-2006* All Rights Reserved* 版权所有：朗顿科技* */#include sbit buzz = P35;void T0_irq(void) interrupt 1 using 1TH0 = -(300/256);TL0 =- (300%256);buzz = buzz;main() TMOD = 0x01;TH0 = -(1000/256);TL0 =- (1000%256);EA = 1;ET0 = 1;TR0 = 1;for(;)/* 描述: 跑马灯程序 * 连接方法： JP11（P2）和JP1(LED灯) 用8PIN排线连接起来 * */#include#include /* 延时子程序 * */void delayms(unsigned char ms)unsigned char i;while(ms-)for(i = 0; i 120; i+);/* 主程序 * */ main()unsigned char LED;LED = 0xfe;P2 = LED;while(1)delayms(250);LED = _crol_(LED,1);/循环右移1位，点亮下一个LED 此函数位库函数P2 = LED;/* 标题: 试验数码管上显示数字( 单片机直接实现位选 共阴极) * * 连接方法：P0与J12 用8PIN排线连接 P1与JP16 用排线连接 * * 请学员认真消化本例程，用573锁存器控制和单片机脚直接位选控制(非译码器控制)数码管 */#include #include void delay(unsigned int i); /函数声名char DelayCNT;/定义变量 /此表为 LED 的字模, 共阴数码管 0-9 - unsigned char code Disp_Tab = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40; /段码控制/此表为8个数码管位选控制, 共阴数码管 1-8个 - unsigned char code dispbit8=0xfe,0xfd,0xfb,0xf7,0xef,0xdF,0xbF,0x7F; /位选控制 查表的方法控制/*主函数*/ main() unsigned int i,LedNumVal=1 ; /变量定义 unsigned int LedOut10; /变量定义 DelayCNT=0; while(1) if(+DelayCNT=20) /控制数字变化速度 DelayCNT=0; /20个扫描周期清零一次 +LedNumVal; /每隔20个扫描周期加一次 LedOut0=Disp_TabLedNumVal%10000/1000; LedOut1=Disp_TabLedNumVal%1000/100|0x80; LedOut2=Disp_TabLedNumVal%100/10; LedOut3=Disp_TabLedNumVal%10; LedOut4=Disp_TabLedNumVal%10000/1000; /千位 LedOut5=Disp_TabLedNumVal%1000/100|0x80; /百位带小数点 LedOut6=Disp_TabLedNumVal%100/10; /十位 LedOut7=Disp_TabLedNumVal%10; /个位 for( i=0; i 0; i-) for(j = 200; j 0; j-);/* 标题: 试验数码管上如何显示数字(共阳极) * * 连接方法：P0 与JP3 用8PIN排线连接 * * 请学员认真消化本例程，用单片机脚直接控制数码管 */#include #include #define NOP() _nop_() /* 定义空指令 */void delay(unsigned int i); /函数声名 / 此表为 LED 的字模 unsigned char code LED7Code = 0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71; main() unsigned int LedNumVal=1 ,C ; /定义变量 while(1) if (+C= 300) LedNumVal+ ; /每隔300个扫描周期加一次 C =0; /每隔300个扫描清零 / 将字模送到P0口显示 P0 = LED7CodeLedNumVal%10&0x7f; /LED7 0x7f为小数点 共阴和共阳此处也是不一样; delay(150); /调用延时程序 /* * 延时程序 * */void delay(unsigned int i) char j; for(i; i 0; i-) for(j = 200; j 0; j-);/* 标题: 试验数码管上显示数字（译码器位选 共阴极） * * 连接方法：P0与J12 用8PIN排线连接 * * 请学员认真消化本例程，用573锁存器和译码器控制和数码管 */#include #include sbit LS138A = P22; /定义138译码器的输入A脚由P2.2控制 sbit LS138B = P23; /定义138译码器的输入脚B由P2.3控制sbit LS138C = P24; /定义138译码器的输入脚C由P2.4控制void delay(unsigned int i); /函数声名char DelayCNT; /此表为 LED 的字模, 共阴数码管 0-9 - unsigned char code Disp_Tab = 0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40; /*主函数*/ main() unsigned int i,LedNumVal=1 ; unsigned int