单片机C例程大全.docx
*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 <reg51.h>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);/调用延时程序P2= Oxff;置P0口为高电平delay(600);/调用延时程序I/*延时函数*/void delay(unsigned int i)(unsigned char j;for(i; i >0; i-)循环600*255次 for(j =255;j>0;j-););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 <reg52.h>void delay(unsigned int i);声明延时函数 main()(unsigned char Num = Oxff;while (1)P2= Num;delay(lOOO);延时函数Num;)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：JP1I（P2）和JP1（LED灯）用8PIN排线连接起来#inckKie<reg51.h>此文件中定义了51的一些特殊功能寄存器#include <intrins.h>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 = Oxfe;/Oxfe=11111110 while(l)P2= LED;delayms(250);LED = LED «1;循环右移1位，点亮下一个LED为左移位if(P2=0x00)LED = Oxfe;/Oxfe =11111110)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<reg51.h>#include <intrins.h>*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 = Oxfe;P2= LED;while(l)(delayms(250);LED =_crol_(LED,l);循环右移1位，点亮下一个LED 此函数位库函数 P2= LED;，字*-*；中断控制的P2.0小灯。采用11.0592/12MHZ晶振。;连接方法：JP11(P2)和JP1(LED灯)用8PIN排线连接起来ORGOOOOhAJMPmainORGOOObhAJMPint_timerORG0030hmain: MOV tmod,#01h；设置定时器工作方式寄存器MOVthO,#high(65536-10000);MOVtl0,#low(65536-10000);设10MS 初始值。MOVie,#82h;设置中断允许寄存器MOV30h,#10MOV31h,#6；30H和31H是两个软件计数器。SETBtrO；启动定时AJMP$；原地踏步int_timer:；定时器。中断服务程序。MOVthO,#high(65536-10000);MOVH0,#low(65536-10000);重设10MS 定时。DJNZ30h,llMOV30h,#10DJNZMOVCPL11: RETIEND31h,ll31h,#6 p2.0；软件计数;10*6*10MS=600MS 时间到，Pl.l 取反；中断返回*跑马灯实验延时实现LED流水灯效果 p2口八个灯作跑马灯。采用了寄存器存中间数连接方法：JPH (P2)和JP1(LED灯)用8PIN排线连接起来#include <reg52.h>void delay(unsigned int i);声明延时函数 char LED;main()unsigned char i; while (1)LED = Oxfe;for (i =0;i <8; i+)P2= LED;delay(500);LED = LED «1;LED = LED I 0x01; if (LED =0x7f)/左移/移位后，后面的位为高电平break;提前退出FOR循环for (i =0;i <8; i+)P2= LED;delay(500);右移移位后，后面的位为高电平LED = LED »1;/LED = LED I 0x80;/*.4正 H 寸*/void delay(unsigned int i)unsigned char j; for(i; i >0; i-)for(j =255;j>0;j-);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 <reg5 l.h>#include <intrins.h>sbit BEEP = P1A5;/将蜂鸣器定义在Pl.5端口上sbit RELAY = P1A4;将继电器定义在Pl.4端口上sbit KI = P0A0; sbit K2=0x80Al;/P0和0X80表示的是同一个地址sbit sbitK3= P0A2; sbitK5= P0A4; sbitK4= Ox8OA3;K6= Ox8OA5;if(K2 != 1) I if(!K3) if(K4) if(!Kl&&!K2) if(!K5 ) if(!K6)RELAY = 0; else通过了反相器（HC6800试用）void beep();main()while(l)P2= Oxff;if(Kl =0) P2= Oxfe;P2= Oxfd;P2= Oxfb;P2=0xf7; P2=0x00;/2个按钮同时按下 P28个灯全部点亮beep。;喇叭发声RELAY =1;void beep()(unsigned char i, j;for (i=0;i<100;i+)/BEEP取反需要产生方波关闭蜂鸣器BEEP=!BEEP;for (j =0; j<250; j+)_nop_();)BEEP=1;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PILED按P01 LED向右移一位* 按POOLED向左移一位* 连续按动按钮LED会不停的左移或右移#include <reg5 l.h>#include <intrins.h>unsigned char scan_key();void proc_key(unsigned char key_v);void delayms(unsigned char ms);sbit KI = P0A0;对应按钮 KI sbit K2= P0Al;对应按钮 K2 main()unsigned char key_s,key_v;key_v =0x03;P2= Oxfe;while(l)key_s = scan_key(); if(key_s != key_v)delayms(lO);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 1= K2;key_s «=1;key_s 1= KI;return key_s;)void proc_key(unsigned char key_v)(if(key_v &0x01)=0)(P2=_cror_(P2,l);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+);)* 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PILED；键盘P2.5控制的小灯P0.0。P2.7对应K1"ORG0000HAJMP MAINORG0030H；检测按键MAIN: MOV C,p0.0MOV P2.O.C;根据按键决定输出。AJMP MAIN;循环END，*;P0.0小键盘按下P2.0亮再按0.5秒灭。；连接方法：连接方法：JP10(P2)与JP1(LED灯)连接，;JP11(P0)与JP5(按键接口)连接*,*;FLAG 20H EXPRESS THE 0.5S TIME ARRIVED.;FLAG 21H EXPRESS THE LED LIGHTED.ORG OOOOh AJMP mainO ORG 0030hMAINO:CLR21H;清标志main:MOVC,P0.0;检测按键JC mainMOVR6,#200;设定延时MOV R7,#200TTO:JNB21H,TT2;检测灯状态tt:MOV C,P0.0;检测按键JNCttlJNB 20H,MAIN ;检测时间标志CLR20HAJMP TT3TT2:MOV c,P0.0;检测按键JNC tt2TT3:CPL21H ;改变灯状态CPLp2.0AJMP mainTT1:NOP;延时但不是子程序NOPNOPNOPNOPNOPDJNZ R6,TTMOV R6,#200DJNZ R7,TTMOV R7,#200SETB 20H AJMP TT END ，*，按键POO每按下次加一，通过的P2端口显示；连接方法：JP1O (P0)与JP1(LED灯)连接，;JP11(P2)与JP5(按键接口)连接*；显示出其的二进制计数值。org OOOOh ajmploop org 0030h mov a,#Offh loop:jnb pO.O,tt jmp loop tt:mov p2,a;全不亮call delay;延时。deca;每次减一。jmploopdelay: movr5,#50;延时。dl:movr6,#40d2:movr7,#20djnzr7,$djnzr6,d2djnzr5,dlret end ,*;键盘控制的花样彩灯。*；连接方法：JP1O (P2)与JP1(LED灯)连接，;JP11(P0)与JP5(按键接口)连接;按p24,p27,p26,p27,p2口8个灯分别作移动右移动，停止右移左移* ，*;亮灯控制程序； ，*，ORG0000HUMP START org 0030hSTART:MOV P3,#OFFHJNBP0.7,FUN0;检测按键JNBPO.4,FUN1JNBPO.5,FUN2JNBPO.6,FUN3;关闭按纽AJMPSTARTFUNO: LCALLDL10MS;消岸抖动JBPO.7,STARTWAITLO:JNBP07WAITL0;等待键释放FUNO1: LCALLFUNOOAJMPSTARTFUN1: LCALLDL10MS;消岸抖动JBP0.4,STARTWAITL1JNBP3.3,WAITL1;等待键释放FUN1O: LCALLFUN11AJMPSTARTFUN2: LCALLDL10MS;消岸抖动JBPO.5,STARTWAITL2JNBP0.5,WAITL2;等待键释放FUN2O: LCALLFUN22AJMPSTARTFUN3: LCALLDL10MS;消岸抖动JBP0.6,STARTWAITL3:JNBP0.6,WAITL3;等待键释放MOVP2,#OFFH;关显示LJMPSTARTFUNOO: MOVA,#OFEH;左移子程序FUNOOO: MOVP2,ALCALLDLO5SJNBACC.7,OUT;检测是否结束RLAAJMPFUNOOOOUT: RETFUN11: MOVA,#O7FH;右移子程序FUN111: MOVP2,ALCALLDLO5SJNBACC.O,OUT;检测是否结束RRAAJMPFUN1UFUN22:MOVA,#0AAH ;间隔显示子程序MOVP2,ALCALLDL30SCPLAMOVP2,ALCALLDL30SRET,*,;延时程序；，* ，DL512:MOVR2,#0FFH;延时500USLOOP1: DJNZR2,LOOP1RETDL10MS:MOVR3,#14H;延时10MSLOOP2: LCALLDL512DJNZR3,LOOP2RETDL05S:MOVR4,#0AH;延时100MSLOOP3: LCALLDLIOMSDJNZR4,LOOP3RETDL30S:MOVR5,#O3H;延时300MS.LOOP4:LCALLDL05SDJNZR5,LOOP4RETend此为蚀立按键接口文件名C51音乐程序（八月桂花）功能通过单片机演奏音乐#include <REG52.H>#include <INTRINS.H>本例采用89C52,晶振为1I.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 = P1A5;unsigned char n=0;/n为节拍常数变量unsigned char code music_tab=0x18,0x30, OxlC,0x10,格式为:频率常数，节拍常数，频率常数，节拍常数,0x20,0x40, OxlC ,0x10,0x18,0x10,0x20,0x10,OxlC,0x10,0x18,0x40,OxlC,0x20,0x20,0x20,OxlC,0x20,0x18,0x20,0x20,0x80, OxFF,0x20,0x30, OxlC,0x10,0x18,0x20,0x15,0x20, OxlC,0x20,0x20,0x20,0x26,0x40,0x20,0x20,0x2B,0x20,0x26,0x20,0x20,0x20,0x30,0x80, OxFF,0x20,0x20, OxlC,0x10,0x18,0x10,0x20,0x20,0x26,0x20,0x2B ,0x20,0x30,0x20, Ox2B ,0x40,0x20,0x20, OxlC,0x10,0x18,0x10,0x20,0x20,0x26,0x20,0x2B ,0x20,0x30,0x20, Ox2B ,0x40,0x20,0x30, OxlC ,0x10,0x18,0x20,0x15,0x20,OxlC,0x20,0x20,0x20,0x26,0x40,0x20,0x20,Ox2B,0x20,0x26,0x20,0x20,0x20,0x30,0x80,0x20,0x30, OxlC ,0x10,0x20,0x10, Ox IC, Ox 10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30,0x20,0x2B,0x40,0x20,0x15, Ox IF,0x05,0x20,0x10, Ox IC,0x10,0x20,0x20,0x26,0x20, Ox2B ,0x20,0x30,0x20, Ox2B ,0x40,0x20,0x30, OxlC,OxlO,0x18,0x20,0x15,0x20, Ox IC,0x20,0x20,0x20,0x26,0x40,0x20,0x20,0x2B,0x20,0x26,0x20,0x20,0x20,0x30,0x30,0x20,0x30, Ox IC, Ox 10,0x18,0x40, OxlC ,0x20,0x20,0x20,0x26,0x40,0x13,0x60,0x18,0x20,0x15,0x40,0x13,0x40,0x18,0x80,0x00 void intO() interrupt 1采用中断0控制节拍 TH0=0xd8;TLO=Oxef;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&=OxOf;TMODI=0x01;TH0=0xd8;TL0=0xef;IE=0x82;play:while(l)a: p=music_tabi;if(p=OxOO) i=0, delayms(lOOO); goto play;如果碰到结束符，延时1秒，回到开始再来一遍else if(p=Oxff) i=i+l;delayms(100),TR0=0; goto a;若碰到休止符，延时100ms,继续取下一音符elsem=music_tabi+, n=music_tabi+;取频率常数和节拍常数TRO=1;开定时器1while(n!=O) Beep=Beep,delay(m);等待节拍完成,通过PI 口输出音频(可多声道哦!) TR0=0;关定时器1ORGAJMP0000HMAIN；伪指令，指定程序从8000H开始存放；跳转指令，程序跳转到MAIN处ORG01 OOH；伪指令，指定以下程序从8100H开始存放MAIN:MOVSP,#60;给堆栈指针赋初值LOOP:ACALL MUSICAJMPLOOP;蜂鸣器输出声响子程序，；控制音长；控制音调MUSIC:MOV R5,#60HMIC:CPLP1.5ACALL DELAY5MSDJNZ R5,MIC RET，*；延时子程序DELAY5MS:MOV R7,#3HDELAYO:MOVDELAY 1:DJNZR6,#40HR6,DELAY1DJNZ R7,DELAY0 RETENDorg OOOOh ajmpmain org 0030hmain:MOV R2,#08HDLV1: MOV R3,#0FAHDLV2: CPLP1.5LCALL DELAY 1;延时DJNZ R3,DLV2DJNZ R2,DLV1MOV R2,#10H;改变循环初值DLV3: MOV R3,#0FAHDLV4: CPLP1.5LCALL DELAY2DJNZ R3,DLV4DJNZ R2,DLV3ajmpmaindelay 1:mov r7,#OOhLLA: DJNZ R7,LLA retdelay2:mov r7,#128LLB:DJNZ R7,LLBretendORG JMPORG JMPORGMAIN: MOVMOV SETBSETBSETBSTARTO: ;clrMOVNEXT: MOVMOVMOVCMOV JZ ANL MOVMOV SWAPANL JNZ CLRJMPSING: DECMOV RL MOV MOVCMOV MOVMOV RL INC MOVCMOV MOV SETBDI:CALLINC0000H MAINOOOBH INTTO0100HSP,#60H TMOD,#01HETOEATROPl.530H,#00H A,30HDPTR,#TABLE A,A+DPTR R2,AENDDA,#0FHR5,A A,R2 A A,#0FH SING TRO DIA 22H,A ADPTR,#TABLE1 A,A+DPTR TH0,A 21H,A A,22HAAA,A+DPTR TL0,A 20H,ATRO DELAY30HJMPNEXTENDD: CLRTROJMPSTARTOINTT0:PUSHPSWPUSHACCMOVTL0,20HMOVTH0,21HCPLPl.5POPACCPOPPSWRETIDELAY: MOVR7,#02DELAY0: MOVR4,#187DELAY 1: MOVR3,#248DJNZR3,$DJNZR4,DELAY 1DJNZR7,DELAY0DJNZR5,DELAYRETTABLE: DB 82H,01 H,81 H,94H,84H,0B4H,0A4H,04HDB 82H,01H,81 H,94H,84H,0C4H,0B4H,04HDB 82H,01 H,81 H,0F4H,0D4H,0B4H,0A4H,94HDB 0E2H,01H,OE1 H,0D4H,0B4H,0C4H,0B4H,04HDB 82H,01 H,81 H,94H,84H,0B4H,0A4H,04HDB 82H,01 H,81 H,94H,84H,0C4H,0B4H,04HDB 82H.01 H,81 H,0F4H,0D4H,0B4H,0A4H,94HDB 0E2H,01H,0El H,0D4H,0B4H,0C4H,0B4H,04H/TABLEI: DW64260,64400,64524,64580,64684,64777,64820,64898/DW 64968,65030,65058,65110,65157,65178,65217ENDORG 0000HUMP STARTORG000BHINC 20H;中断服务，中断计数器加1MOVTH0,#0D8HMOVTL0,#0EFH;12M晶振，形成10毫秒中断RETISTART:MOVSP,#50HMOVTH0,#0D8HMOVTL0,#0EFHMOVTMOD,#01HMOVIE,#82HMUSICO:NOPMOVDPTR,#DAT;表头地址送DPTRMOV20H,#00H；中断计数器清0MOVB,#00H；表序号清0MUSIC 1:NOPCLRAMOVCA,A+DPTR；查表取代码JZENDO;是OOH,则结束CJNEA,#0FFH,MUSIC5LJMPMUSIC3MUSIC5:NOPMOVR6,AINCDPTRMOVA,BMOVCA,A+DPTR;取节拍代码送R7MOVR7,ASETBTRO;启动计数MUSIC2:NOPCPLPl.5MOVA,R6MOVR3,ALCALLDELMOVA,R7CJNEA,20H,MUSIC2；中断计数器(2OH)=R7否?;不等，则继续循环MOV20H,#00H；等于,则取下一代码INCDPTR;INCBLJMPMUSIC 1MUSIC3:NOPCLRTRO淋止100毫秒MOVR2,#0DHMUSIC4:NOPMOVR3,#0FFHLCALL DELDJNZR2,MUSIC4INCDPTRLIMPMUSIC 1ENDO:NOPMOVR2,#10H ;歌曲结束，延时1秒后继续MUSIC6:MOVR3,#00HLCALL DELDJNZR2,MUSIC6LIMPMUSICODEL:NOPDEL3:MOV R4,#02HDEL4:NOPDJNZR4,DEL4NOPDJNZR3,DEL3RET NOPDAT:db 26h,20h,20h,20h,20h,20h,26h,1 Oh,2Oh,l 0h,20h,80h,26h,20h,30h,20h db 3Oh,2Oh,39h,1 Oh,3Oh,l 0h,30h,80h,26h,20h,20h,20h,20h,20hJ ch,20h db 20h,80h,2bh,20h,26h,20h,20h,20h,2bh,l 0h,26h,l 0h,2bh,80h,26h,20h db 3Oh,2Oh,3Oh,2Oh,39h,l0h,26h,l0h,26h,60h,40h,10h,39h,l0h,26h,20h db 3Oh,2Oh,3Oh,2Oh,39h,l 0h,26h,l 0h,26h,80h,26h,20h,2bh,l Oh,2bh,l Oh db 2bh,2Oh,3Oh,lOh,39h,l0h,26h,lOh,2bh,l0h,2bh,20h,2bh,40h,40h,20h db 20h,l 0h,20h,l Oh,2bh,l Oh,26h,3Oh,3Oh,8Oh,18h,2Oh,18h,20h,26h,20h db 20h,20h,20h,40h,26h,20h,2bh,20h,30h,20h,30h,20h,lch,20h,20h,20h db 2Oh,8Oh,l ch,20h,l ch,2Oh,l ch,20h,30h,20h,30h,60h,39h,1 Oh,3Oh,l Oh db 20h,20h,2bh,l0h,26h,l0h,2bh,l0h,26h,l0h,26h,1 Oh,2bh,lOh,2bh,8Oh db 18h,2Oh,l 8h,20h,26h,20h,20h,20h,20h,60h,26h,l Oh,2bh,2Oh,3Oh,2Oh db 3Oh,2Oh,l ch,20h,20h,20h,20h,80h,26h,20h,30h,1 Oh,3Oh,1 Oh,3Oh,2Oh db 39h,20h,26h,l Oh,2bh,l 0h,2bh,20h,2bh,40h,40h,10h,40h,10h,20h,l Oh db 20h,l0h,2bh,l0h,26h,30h,30h,80h,00HEND继电器实验/*连接方法：连接JP11(P2)与JP5(按钮接口)/*按下P2.7继电器P1.4动作#include <reg5 l.h>必1的端口和各特殊寄存器定义在此文件中sbit RELAY = Pl A4;sbit KI = P2A7;定义继电器时应单片机管脚 /定义按钮对应单片机管脚主函数main()(if (!K1) RELAY =0;按钮按下开启继电器else RELAY =1;/按钮松开关闭继用器*138译码器实验*实验目的：1.了解138译码器工作原理* 2.学会用C语言对138译码器编程控制* 实验现象：LED灯每隔一段时间循环点亮* 接线方法：J15连JP1（参考图片连接）*#include <reg5 l.h>sbit HC138A = P2A2;定义译码器输入端A在P2.2管脚上sbit HC138B = P2A3;定义译码器输入端B在P2.3管脚上sbit HC138C = P2A4;定义译码器输入端C在P2.4管脚h延时函数void delay(unsigned int i)(unsigned char j;for(i; i >0; i-)循环1500*255次CPU在这里执行一段时间for(j =255;j>0;j-)； main()(/点亮第一个LED灯HC138C =0; HC138B =0; HC138A =0;/输入000delay。500);/延时/点亮第二个LED灯HC138C =0; HC138B =0; HC138A=1;/输入001delay(1500);延时/点亮第三个LED灯HC138C =0; HC138B = l;HC138A =0;输入010 delay(1500);/点亮第四个LED灯HC138C =0; HC138B =1;HC138A=1;输入 Oil delay(2000);/点亮第五个LED灯HC138C=1;HC138B =0; HC138A =0;/输入100delay(1500);/点亮第六个LED灯HC138C=1;HC138B = O; HC138A=1;输入101 delay(1500);HC138C= l;HC138B = l;HC138A =0;输入110 delay(1500);HC138C=1; HC138B =1;HC138A=1;输入111 delay(1500);H*Ni tarC L*lav lawi. Xwdon't c«e74LS138* 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 <reg5 l.h> void delay(unsigned int i); /此表为LED的字模 89 a b函数声名01defunsignedcharcode234567LED7Code=0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71;main()(unsigned int LedNumVal; 定义变量 while(l)/将字模送到P0 口显示LedNumVal+4-;InputsOutputsEnableSelectG1G2,CBAY0Y1Y2Y3Y4Y5Y6Y7XHXXXHHHHHHHHLXXXXHHHHHHHHHLLLL
