基于STC89C52单片机的数字时钟设计（附电路图及源程序）

PAGE43-第九届长通杯电子设计大赛论文基于STC89C52单片机的数字时钟设计组长：组员：联系方式：目录1、系统方案 -3-1.1、方案比较与选择 -3-1.1.1、单片机选择与论证 -3-1.1.2、稳压电源选择与论证 -3-1.1.3、时钟芯片选择与论证 -3-1.1.4、感温器件选择与论证 -4-1.1.5、显示器件选择与论证 -4-1.1.6、键盘形式选择与论证 -4-2、电路与程序设计 -4-2.1、电路的设计 -4-2.1.1、总体框图设计 -4-2.1.2、单片机最小系统电路 -5-2.1.3、稳压电源电路 -5-2.1.4、时钟芯片电路 -6-2.1.5、按键电路 -7-2.1.6、蜂鸣器电路 -7-2.1.7、感温电路 -7-2.1.8、显示电路 -7-2.2、程序设计 -8-2.2.1、DS1302程序流程图 -8-2.2.2、液晶显示子程序流程图 -9-附录 -10-附录1：电路原理图 -10-附录2：源程序 -11-1、系统方案1.1、方案比较与选择1.1.1、单片机选择与论证方案一：SST单片机。SST单片机省去了开发用的编程器和仿真器。省去了外部EEPROM、电压监控芯片、上电复位电路和5个UART的扩展芯片。它自带在线下载和在线仿真功能，带有5路PCA模块(主成分分析)，PCA功能比普通单片机有更强的计时性。利用PCA的脉冲宽度调制（PWM）模式可产生一个8位PWM。方案二：STC89C52是一种低功耗、高性能CMOS8位微控制器，具有8K在系统可编程Flash存储器。在单芯片上，拥有灵巧的8位CPU和在系统可编程Flash，使得STC89C52为众多嵌入式控制应用系统提供高灵活、超有效的解决方案。具有以下标准功能：8k字节Flash，512字节RAM，32位I/O口线，看门狗定时器，内置4KBEEPROM，MAX810复位电路，三个16位定时器/计数器，一个6向量2级中断结构，全双工串行口。基于以上比较，本设计选用方案二。1.1.2、稳压电源选择与论证方案一：采用集成多路输出电源模块。集成多路输出电源模块具有制作简单，使用方便等特点，但临时短时间内要购买比较困难，而且价格较贵，电源组合方式固定不易选择。方案二：采用LM7805稳压电路。LM7805是我们最常用到的稳压芯片，它的使用方便，用很简单的电路即可以输入一个直流稳压电源，而且它的输出电压恰好为5V，是51系列单片机运行所需的电压。考虑到设计成本，本设计选用方案二。1.1.3、时钟芯片选择与论证方案一：是一款低功耗，具有56字节非失性RAM的全BCD码时钟日历实时时钟芯片，地址和数据通过两线双向的串行总线的传输，芯片可以提供秒，分，小时等信息，每一个月的天数能自动调整。并且有闰年补偿功能。AM/PM标志位决定时钟工作于24小时或12小时模式，芯片有一个内置的电源感应电路，具有掉电检测和电池切换功能。方案二：DS1302是美国DALLAS公司推出的一种高性能、低功耗、带RAM的实时时钟电路，它可以对年、月、日、周日、时、分、秒进行计时，具有闰年补偿功能，工作电压为2.5V～5.5V。采用三线接口与CPU进行同步通信，并可采用突发方式一次传送多个字节的时钟信号或RAM数据。DS1302内部有一个31×8的用于临时性存放数据的RAM寄存器。DS1302是DS1202的升级产品，与DS1202兼容，但增加了主电源/后备电源双电源引脚，同时提供了对后备电源进行涓细电流充电的能力。考虑到时钟应该具有掉电保护功能，因此本设计选用方案二。1.1.4、感温器件选择与论证采用DS18B20数字温度传感器。DS18B20数字温度传感器接线方便，封装成后可应用于多种场合，如管道式，螺纹式，磁铁吸附式，不锈钢封装式，型号多种多样，有LTM8877，LTM8874等等。封装后的DS18B20耐磨耐碰，体积小，使用方便，封装形式多样，适用于各种狭小空间设备数字测温和控制领域。故本设计采用DS18B20数字温度传感器作为感温模块。1.1.5、显示器件选择与论证方案一：数码管。数码管显示能在低电压、小电流条件下驱动发光，能与CMOS、ITL电路兼容。发光响应时间极短(<0．1μs)，高频特性好，单色性好，亮度高。体积小，重量轻，抗冲击性能好。寿命长，使用寿命在10万小时以上，甚至可达100万小时。但显示功能有限，只能显示数字和个别字母。方案二：液晶显示器。液晶显示器每一个点在收到信号后就一直保持那种色彩和亮度，恒定发光，显示质量高。其接口都是数字式的，和单片机系统的接口更加简单可靠，操作更加方便。功耗主要消耗在其内部的电极和驱动IC上，因而耗电量比其它显示器要少得多。基于对显示器功能的稳定性和齐全性考虑，我们采用方案二。1.1.6、键盘形式选择与论证方案一：独立式按键。独立按键的输入线较多，结构复杂，一般适用于按键较少，操作速度较高的场合。方案二：行列式键盘。行列式键盘由行和列线交叉组成，一般适用于按键较多的场合。使用4×4矩形键盘，这样键盘模块仅使用8根线与处理器相连，节省了系统资源。由于我们功能比较少，矩形键盘占用电路板位置较大，因此选择方案一。2、电路与程序设计2.1、电路的设计2.1.1、总体框图设计系统总体框图如图1所示。图1系统总体框图2.1.2、单片机最小系统电路宏晶公司的STC82C52是51内核的单片机。完全兼容51系列的单片机，具有丰富的I/O口资源。并且支持在系统下载，不用烧写器就可以给单片机下载程序，给调试带来了很大的方便。因此控制模块是以STC89C52单片机为核心的一块最小系统板，如下图2所示。图2控制模块原理图2.1.3、稳压电源电路电源模块采用LM7805稳压电路，如下图3所示。图3稳压电路原理图2.1.4、时钟芯片电路DS1302时钟芯片是美国DALLAS公司推出的具有涓细电流充电能力的低功耗实时芯片，它可以对年、月、日、周、日、时、分、秒进行计时，且具有闰年补偿等多种功能，其引脚图如下图4所示。图4DS1302时钟芯片2.1.5、按键电路此电路实现四种不同功能的转换。按键一实现菜单功能，按键二实现加一功能，按键三实现减一功能，按键四实现始确定功能。电路图如图5。图5按键电路2.1.6、蜂鸣器电路当整点及闹钟到点时，蜂鸣器响。电路图如图6。图6蜂鸣器连接电路2.1.7、感温电路DS18B20数字温度传感器接线方便，封装成后可应用于多种场合。如下图7所示：图7感温原理图2.1.8、显示电路显示模块采用的是LCD1602液晶显示，硬件原理实现如图8所示。图8显示模块原理图2.2、程序设计2.2.1、DS1302程序流程图图9DS1302流程图2.2.2、液晶显示子程序流程图开始开始初始化LCD显示内容写入缓存LCD控制器启动延时置DISP为高电平液晶屏正常显示置DISP为低电平延时LCD控制器关闭液晶屏无显示图11液晶显示流程图附录附录1：电路原理图附录2：源程序#include<at89x52.h> #include<intrins.h> typedefunsignedcharuchar;typedefunsignedintuint;#defineLCD1602_DATAP0//1602液晶数据口sbitLCD1602_RS=P1^1;sbitLCD1602_RW=P1^2;sbitLCD1602_EN=P1^3;//1602液晶使能控制sbitDS1302_CLK=P1^4;//实时时钟时钟线引脚sbitDS1302_IO=P1^5;//实时时钟数据线引脚sbitDS1302_RST=P1^6;//实时时钟复位线引脚sbitDQ=P1^0;//18B20接口sbitBeepIO=P2^3;//蜂鸣器sbitesc=P2^1;//取消播放音乐sbitmode=P3^4;//模式键sbitinc=P3^5;//增加键sbitdec=P3^6;//减少键sbitok=P3^7;//OK键sbitlight=P3^2;//背光控制sbitACC0=ACC^0;//累加器位定义sbitACC7=ACC^7;bitfirst_flag=1,//一级主界面显示标志second_flag,//二级菜单显示标志third_flag,//三级菜单显示标志playmusic,//播放音乐的标志light_flag1=1,//背光第一次计时标志light_flag=1;//二三级界面开背光标志uinttemp1,temp2,temp2t,temp3,temp4,ser;ucharcount1,sec1,min1,hour1;//定时器2使用的变量停表用ucharcount,sec,min;//定时器1使用的变量贪睡用uinttemp;//温度暂存//////以下为播放音乐的设置#defineSYSTEM_OSC12000000#defineSOUND_SPACE4/5uintcodeFreTab[12]={262,277,294,311,330,349,369,392,415,440,466,494};//原始频率表ucharcodeSignTab[7]={0,2,4,5,7,9,11};//1~7在频率表中的位置ucharcodeLengthTab[7]={1,2,4,8,16,32,64}; ucharSound_Temp_TH0,Sound_Temp_TL0;//音符定时器初值暂存ucharSound_Temp_TH1,Sound_Temp_TL1;//音长定时器初值暂存bitstop;charmenu_num;//菜单号charnum;//按键加减调整暂存数charposition1,position2,position3,position4,position5,position6,position7;//菜单1-7的光标位置标志charcodemenu[][16]={"1.TimeSetting","2.AlarmSetting","3.AlarmMusic","4.Snooze","5.BackLight","6.StopWatch","7.LowPowerMode","8.Exit"};charcodeon_off_flag[][4]={"OFF","ON"};charcodealarm_times[][7]={"Once","Repeat"};charcodeweek[][4]={"MON","TUE","WED","THU","FRI","SAT","SUN"};ucharcodeself_table[]={0x08,0x0f,0x12,0x0f,0x0a,0x1f,0x02,0x02,//年00x0F,0x09,0x0F,0x09,0x0F,0x09,0x13,0x00,//月10x1f,0x11,0x11,0x1f,0x11,0x11,0x1f,0x00,//日20x01,0x0c,0x17,0x14,0x17,0x0c,0x01,0x00,//闹钟标志 30x17,0x04,0x04,0x07,0x00,0x00,0x00,0x00,//摄氏度标志 40x1f,0x15,0x0a,0x04,0x0a,0x15,0x1f,0x00}; //贪睡标志5/***********************延时函数(单位ms)**************************/voiddelay(uintz){uintx;uchary;for(x=z;x>0;x--)for(y=112;y>0;y--);}/******************LCD1602驱动程序******************//******忙检测*********/voidLCD1602_check_busy(){LCD1602_DATA=0xff;LCD1602_RS=0; LCD1602_RW=1; LCD1602_EN=1; while(LCD1602_DATA&0x80); LCD1602_EN=0; }/********************写指令********************/voidLCD1602_write_cmd(ucharcmd){LCD1602_check_busy(); LCD1602_RS=0; LCD1602_RW=0; LCD1602_DATA=cmd; LCD1602_EN=1;_nop_();LCD1602_EN=0;}/*******************写数据**********************/voidLCD1602_write_data(uchardat){LCD1602_check_busy(); LCD1602_RS=1; LCD1602_RW=0; LCD1602_DATA=dat; LCD1602_EN=1;_nop_(); LCD1602_EN=0;}/*************************1602初始化*************************/voidLCD1602_init(){/****************写入自定义字符***************************/uchari;LCD1602_write_cmd(0x40);//CGRAM起始地址for(i=0;i<48;i++)LCD1602_write_data(self_table[i]);//写入6个自定义字符LCD1602_write_cmd(0x38);//8位数据，双列显示，5*7字形LCD1602_write_cmd(0x0c);//开显示，关光标，光标不闪烁LCD1602_write_cmd(0x01);//清屏}/**************************设置显示坐标***************************/voidLCD1602_set_postion(ucharx,uchary){if(!y)LCD1602_write_cmd(0x80+x);elseif(y)LCD1602_write_cmd(0xc0+x);}/***********************指定位置写字符************************/voidLCD1602_write_char(ucharx,uchary,ucharchardata){LCD1602_set_postion(x,y);LCD1602_write_data(chardata);}/***********************指定位置写字符串************************/voidLCD1602_write_string(ucharx,uchary,uchar*string){LCD1602_set_postion(x,y);while((*string)!='\0'){ LCD1602_write_data(*string);string++;}}/******************DS1302驱动程序*******************/voidDS1302InputByte(unsignedchard)//实时时钟写入一字节(内部函数){unsignedchari;ACC=d;for(i=8;i>0;i--){DS1302_IO=ACC0;//相当于汇编中的RRCDS1302_CLK=1;DS1302_CLK=0;ACC=ACC>>1;}}unsignedcharDS1302OutputByte(void)//实时时钟读取一字节(内部函数){unsignedchari;for(i=8;i>0;i--){ACC=ACC>>1;//相当于汇编中的RRCACC7=DS1302_IO;DS1302_CLK=1;DS1302_CLK=0;}return(ACC);}voidWrite1302(unsignedcharucAddr,unsignedcharucDa)//ucAddr:DS1302地址,ucData:要写的数据{DS1302_RST=0;DS1302_CLK=0;DS1302_RST=1;DS1302InputByte(ucAddr);//地址，命令DS1302InputByte(ucDa);//写1Byte数据DS1302_CLK=1;DS1302_RST=0;}unsignedcharRead1302(unsignedcharucAddr)//读取DS1302某地址的数据{unsignedcharucData;DS1302_RST=0;DS1302_CLK=0;DS1302_RST=1;DS1302InputByte(ucAddr|0x01);//地址，命令ucData=DS1302OutputByte();//读1Byte数据DS1302_CLK=1;DS1302_RST=0;return(ucData);}voidDS1302_init(){if(Read1302(0xc1)!=0xf0) {Write1302(0x8e,0x00);//允许写操作Write1302(0xc0,0xf0);//写入初始化标志，系统上电后检测此标志，即此子函数只会在第一次初始化一次。/******时间初始值******/Write1302(0x8c,0x10);//年Write1302(0x8a,0x03);//星期Write1302(0x88,0x05);//月Write1302(0x86,0x26);//日Write1302(0x84,0x22);//时Write1302(0x82,0x59);//分Write1302(0x80,0x55);//秒 Write1302(0xd2,0);//歌曲选择初始Write1302(0xd4,5);//贪睡初始延时时间5分钟Write1302(0xd6,0);//贪睡初始值关闭/******闹钟初始值******/Write1302(0xc2,0);//十时Write1302(0xc4,0);//时Write1302(0xc6,0);//闹钟标志Write1302(0xc8,0);//闹钟次数标志////第二个闹钟Write1302(0xca,0);//十时Write1302(0xcc,0);//时Write1302(0xce,0);//闹钟标志Write1302(0xd0,0);//闹钟次数标志Write1302(0xd8,0);//背光控制开关Write1302(0xda,0x10);//背光延时时间Write1302(0x90,0xa4);//涓流充电 Write1302(0x8e,0x80);//禁止写操作 }}/******************DS18B20驱动程序*******************/voiddelay_18b20(unsignedinti)//延时函数{while(i--);}//18b20初始化函数voidInit_DS18B20(void){unsignedcharx=0;DQ=1;//DQ复位delay_18b20(8);//稍做延时DQ=0;//单片机将DQ拉低delay_18b20(80);//精确延时大于480usDQ=1;//拉高总线delay_18b20(10);x=DQ;//稍做延时后如果x=0则初始化成功x=1则初始化失败delay_18b20(5);}//读一个字节unsignedcharReadOneChar(void){unsignedchari=0;unsignedchardat=0;for(i=8;i>0;i--){DQ=0;//给脉冲信号dat>>=1;DQ=1;//给脉冲信号if(DQ)dat|=0x80;delay_18b20(5);}return(dat);}//写一个字节voidWriteOneChar(unsignedchardat){unsignedchari=0;for(i=8;i>0;i--){DQ=0;DQ=dat&0x01;delay_18b20(5);DQ=1;dat>>=1;}delay_18b20(5);}//读取温度unsignedintReadTemperature(void){unsignedinta=0;unsignedintb=0;unsignedintt=0;floattt;Init_DS18B20();WriteOneChar(0xCC);//跳过读序号列号的操作WriteOneChar(0x44);//启动温度转换delay_18b20(200);Init_DS18B20();WriteOneChar(0xCC);//跳过读序号列号的操作WriteOneChar(0xBE);//读取温度寄存器等（共可读9个寄存器）前两个就是温度a=ReadOneChar();b=ReadOneChar();t=b;t<<=8;t=t|a;tt=t*0.0625;t=tt*10+0.5;return(t);}/************一级主界面显示函数************/voidfirst_interface(){LCD1602_write_string(0,0,"20");LCD1602_write_data(Read1302(0x8d)/16+0x30);//十年LCD1602_write_data(Read1302(0x8d)%16+0x30);//年LCD1602_write_data(0);//显示自定义字符“年”LCD1602_write_data(Read1302(0x89)/16+0x30);//十月LCD1602_write_data(Read1302(0x89)%16+0x30);//月LCD1602_write_data(1);//显示自定义字符“月”LCD1602_write_data(Read1302(0x87)/16+0x30);//十日LCD1602_write_data(Read1302(0x87)%16+0x30);//日LCD1602_write_data(2);//显示自定义字符“日”if(Read1302(0xd7))LCD1602_write_char(9,1,5);//显示自定义字符贪睡标志elseLCD1602_write_char(9,1,'');LCD1602_write_string(12,0,week[Read1302(0x8b)-1]);//显示星期if(Read1302(0xc7)||Read1302(0xcf))LCD1602_write_char(10,1,3);//显示自定义字符闹钟标志elseLCD1602_write_char(10,1,'');LCD1602_write_char(0,1,Read1302(0x85)/16+0x30);//十时LCD1602_write_data(Read1302(0x85)%16+0x30);//时LCD1602_write_data(':');LCD1602_write_char(3,1,Read1302(0x83)/16+0x30);//十分LCD1602_write_data(Read1302(0x83)%16+0x30);//分LCD1602_write_data(':');LCD1602_write_char(6,1,Read1302(0x81)/16+0x30);//十秒LCD1602_write_data(Read1302(0x81)%16+0x30);//秒temp=ReadTemperature();temp=temp;temp1=temp/100;temp2t=temp%100;temp2=temp2t/10;temp3=temp2t%10;temp4=temp3%100/10;LCD1602_write_char(11,1,temp1+0x30);//温度显示LCD1602_write_data(temp2+0x30);LCD1602_write_data(0x2E);LCD1602_write_data(temp3+0x30);LCD1602_write_data(4);}/****************定时器2初始化函数***********停表用*************/voidinit_timer2(){T2CON=0;T2MOD=0;RCAP2H=(65536-10000)/256;//10msRCAP2L=(65536-10000)%256;TH2=(65536-10000)/256;//10msTL2=(65536-10000)%256; EA=1;ET2=1;TR2=1;}/**************定时器1初始化函数*************贪睡用**************/voidinit_timer1(){TMOD=0x10;TH1=(65536-10000)/256;//10msTL1=(65536-10000)%256; EA=1;ET1=1;TR1=1;}/************二级菜单显示函数************/voidsecond_interface(){LCD1602_write_char(0,(menu_num*3)%2,0x7E);//三角形指示符号LCD1602_write_char(0,!((menu_num*3)%2),'');//清除残留显示三角形if(!((menu_num*3)%2))//判断是否要往液晶写入显示,menu_num每跳变2时写一次{LCD1602_write_string(1,0,menu[menu_num]);//1602液晶第一行显示LCD1602_write_string(1,1,menu[menu_num+1]);//1602液晶第二行显示}elseif((menu_num*3)%2)//防止从三级界面回来时二级界面不显示了{LCD1602_write_string(1,0,menu[menu_num-1]);//1602液晶第一行显示LCD1602_write_string(1,1,menu[menu_num]);//1602液晶第二行显示} }/************三级菜单显示函数************/voidthird_interface(){switch(menu_num){case0:{if(!position1)//时间设置界面,仅进入三级菜单界面时刻显示一下{ LCD1602_write_string(0,0,"20");LCD1602_write_data(Read1302(0x8d)/16+0x30);//十年LCD1602_write_data(Read1302(0x8d)%16+0x30); //年LCD1602_write_data(0);//显示自定义字符“年”LCD1602_write_data(Read1302(0x89)/16+0x30); //十月LCD1602_write_data(Read1302(0x89)%16+0x30);//月LCD1602_write_data(1);//显示自定义字符“月”LCD1602_write_data(Read1302(0x87)/16+0x30); //十日LCD1602_write_data(Read1302(0x87)%16+0x30);//日LCD1602_write_data(2);//显示自定义字符“日” LCD1602_write_string(12,0,week[Read1302(0x8b)-1]);//显示星期 LCD1602_write_char(0,1,Read1302(0x85)/16+0x30);//十时LCD1602_write_data(Read1302(0x85)%16+0x30); //时LCD1602_write_data(':');LCD1602_write_char(3,1,Read1302(0x83)/16+0x30);//十分LCD1602_write_data(Read1302(0x83)%16+0x30); //分LCD1602_write_data(':');LCD1602_write_char(6,1,Read1302(0x81)/16+0x30);//十秒LCD1602_write_data(Read1302(0x81)%16+0x30);//秒LCD1602_write_cmd(0x80+3);//第一次进入三级菜单时将光标放的位置position1=1; }}break;case1:{if(!position2) //闹钟设置界面 {LCD1602_write_char(0,0,Read1302(0xc3)/16+0x30);//十时LCD1602_write_data(Read1302(0xc3)%16+0x30); //时LCD1602_write_data(':');LCD1602_write_char(3,0,Read1302(0xc5)/16+0x30);//十分LCD1602_write_data(Read1302(0xc5)%16+0x30); //分LCD1602_write_string(6,0,on_off_flag[Read1302(0xc7)]);//闹钟标志LCD1602_write_string(10,0,alarm_times[Read1302(0xc9)]);//闹钟次数标志////////第二个闹钟LCD1602_write_char(0,1,Read1302(0xcb)/16+0x30);//十时LCD1602_write_data(Read1302(0xcb)%16+0x30); //时LCD1602_write_data(':');LCD1602_write_char(3,1,Read1302(0xcd)/16+0x30);//十分LCD1602_write_data(Read1302(0xcd)%16+0x30); //分LCD1602_write_string(6,1,on_off_flag[Read1302(0xcf)]);//闹钟标志LCD1602_write_string(10,1,alarm_times[Read1302(0xd1)]);//闹钟次数标志LCD1602_write_cmd(0x80+1);//第一次进入三级菜单时将光标放的位置position2=1; }}break;case2:{//闹铃音乐选择if(!position3) {LCD1602_write_string(1,0,"AlarmMusicIs");if(Read1302(0xd3))LCD1602_write_string(3,1,"LoveTransfer");elseLCD1602_write_string(3,1,"FairyTale");LCD1602_write_cmd(0xc0+2);position3=1; }}break;case3:{if(!position4) {LCD1602_write_string(0,0,"Snooze:");LCD1602_write_string(13,0,on_off_flag[Read1302(0xd7)]);LCD1602_write_string(0,1,"Delayminutes");LCD1602_write_char(6,1,Read1302(0xd5)/16+0x30);LCD1602_write_data(Read1302(0xd5)%16+0x30);LCD1602_write_cmd(0x80+13);//首次进入光标保持的位置position4=1; }}break;case4:{//背光控制if(!position5) {LCD1602_write_string(0,0,"LightControl:");LCD1602_write_string(13,0,on_off_flag[Read1302(0xd9)]);LCD1602_write_string(0,1,"KeepSeconds");LCD1602_write_char(5,1,Read1302(0xdb)/16+0x30);LCD1602_write_char(6,1,Read1302(0xdb)%16+0x30);LCD1602_write_cmd(0x80+13);//首次进入光标保持的位置position5=1; }}break;case5:{if(!position6) //停表 {LCD1602_write_string(3,0,"hmsms");LCD1602_write_char(4,1,':');LCD1602_write_char(7,1,':');LCD1602_write_char(10,1,'.');position6=1; }LCD1602_write_char(2,1,hour1/10+0x30);LCD1602_write_data(hour1%10+0x30);LCD1602_write_char(5,1,min1/10+0x30);LCD1602_write_data(min1%10+0x30);LCD1602_write_char(8,1,sec1/10+0x30);LCD1602_write_data(sec1%10+0x30);LCD1602_write_char(11,1,count1/10+0x30);LCD1602_write_data(count1%10+0x30);}break;case6:{light=1;//关背光 PCON=2;//进入掉电模式}break; }}/************播放音乐函数************/voidInitialSound(){playmusic=1;//播放音乐标志置位BeepIO=0; Sound_Temp_TH1=(65535-(1/1200)*SYSTEM_OSC)/256;//计算TL1应装入的初值(10ms的初装值)Sound_Temp_TL1=(65535-(1/1200)*SYSTEM_OSC)%256;//计算TH1应装入的初值TH1=Sound_Temp_TH1;TL1=Sound_Temp_TL1;TMOD|=0x11;ET0=1;ET1=0;TR0=0;TR1=0;EA=1;}voidBeepTimer0()interrupt1//音符发生中断{if(esc==0){delay(50);if(esc==0)stop=1;while(!esc);}BeepIO=!BeepIO;TH0=Sound_Temp_TH0;TL0=Sound_Temp_TL0;}voidPlay(unsignedchar*Sound,unsignedcharSignature,unsignedOctachord,unsignedintSpeed){unsignedintNewFreTab[12];//新的频率表unsignedchari,j;unsignedintPoint,LDiv,LDiv0,LDiv1,LDiv2,LDiv4,CurrentFre,Temp_T,SoundLength;unsignedcharTone,Length,SL,SH,SM,SLen,XG,FD;for(i=0;i<12;i++)//根据调号及升降八度来生成新的频率表{j=i+Signature;if(j>11) {j=j-12;NewFreTab[i]=FreTab[j]*2; }elseNewFreTab[i]=FreTab[j];if(Octachord==1)NewFreTab[i]>>=2;elseif(Octachord==3)NewFreTab[i]<<=2;} SoundLength=0;while(Sound[SoundLength]!=0x00)//计算歌曲长度{SoundLength+=2;}Point=0;Tone=Sound[Point]; Length=Sound[Point+1];//读出第一个音符和它时时值LDiv0=12000/Speed;//算出1分音符的长度(几个10ms) LDiv4=LDiv0/4;//算出4分音符的长度LDiv4=LDiv4-LDiv4*SOUND_SPACE;//普通音最长间隔标准TR0=0;TR1=1;while(Point<SoundLength){SL=Tone%10; //计算出音符SM=Tone/10%10; //计算出高低音SH=Tone/100; //计算出是否升半CurrentFre=NewFreTab[SignTab[SL-1]+SH];//查出对应音符的频率 if(SL!=0) {if(SM==1)CurrentFre>>=2; //低音if(SM==3)CurrentFre<<=2; //高音Temp_T=65536-(50000/CurrentFre)*10/(12000000/SYSTEM_OSC);//计算计数器初值Sound_Temp_TH0=Temp_T/256;Sound_Temp_TL0=Temp_T%256;TH0=Sound_Temp_TH0;TL0=Sound_Temp_TL0+12;//加12是对中断延时的补偿 }SLen=LengthTab[Length%10];//算出是几分音符XG=Length/10%10;//算出音符类型(0普通1连音2顿音)FD=Length/100;LDiv=LDiv0/SLen;//算出连音音符演奏的长度(多少个10ms)if(FD==1)LDiv=LDiv+LDiv/2;if(XG!=1) if(XG==0)//算出普通音符的演奏长度if(SLen<=4) LDiv1=LDiv-LDiv4; elseLDiv1=LDiv*SOUND_SPACE; elseLDiv1=LDiv/2;//算出顿音的演奏长度elseLDiv1=LDiv;if(SL==0)LDiv1=0;LDiv2=LDiv-LDiv1;//算出不发音的长度if(SL!=0) {TR0=1;for(i=LDiv1;i>0;i--)//发规定长度的音 {while(TF1==0);TH1=Sound_Temp_TH1;TL1=Sound_Temp_TL1; TF1=0;} }if(LDiv2!=0) {TR0=0;BeepIO=0;for(i=LDiv2;i>0;i--)//音符间的间隔 {while(TF1==0);TH1=Sound_Temp_TH1;TL1=Sound_Temp_TL1; TF1=0; } }if(stop)Point=SoundLength;Point+=2;Tone=Sound[Point];Length=Sound[Point+1];}stop=0;BeepIO=1;ET0=0;ET1=0;TR0=0;TR1=0;EA=0;playmusic=0;}ucharcodelove[]={0x1A,0x03,0x15,0x03,0x17,0x03,0x15,0x03,0x16,0x03,0x15,0x03,0x11,0x03,0x17,0x02,0x16,0x02,0x10,0x01,0x15,0x03,0x17,0x03,0x19,0x03,0x19,0x03,0x1A,0x02,0x19,0x03,0x18,0x03,0x17,0xC9,0x1B,0x03,0x1A,0x03,0x17,0x66,0x15,0x02,0x10,0x03,0x17,0x03,0x16,0x03,0x18,0x01,0x19,0x03,0x18,0x03,0x17,0x02,0x16,0x03,0x15,0x03,0x17,0x02,0x16,0x02,0x10,0xC9,0x1A,0x03,0x15,0x03,0x17,0x03,0x15,0x03,0x16,0x02,0x15,0x02,0x11,0x03,0x17,0x02,0x16,0x02,0x10,0x01,0x15,0x03,0x17,0x03,0x19,0x03,0x19,0x03,0x1A,0x02,0x19,0x03,0x18,0x03,0x17,0xC9,0x1B,0x03,0x1A,0x03,0x17,0x66,0x15,0x02,0x10,0x03,0x17,0x03,0x16,0x03,0x18,0x01,0x19,0x03,0x18,0x03,0x17,0x02,0x16,0x03,0x15,0x03,0x17,0x02,0x16,0x02,0x10,0xC9,0x00,0x00};ucharcodefairy_tale[]={0x0F,0x03,0x10,0x03,0x15,0x03,0x16,0x03,0x15,0x03,//爱情呼叫转移0x1F,0x67,0x1A,0x0E,0x1A,0x03,0x1F,0x03,0x1A,0x66,0x19,0x0D,0x19,0x03,0x15,0x03,0x1F,0x03,0x1B,0x03,0x1F,0x03,0x1B,0x03,0x1A,0x03,0x19,0x03,0x1A,0x03,0x19,0x03,0x17,0x03,0x16,0x03,0x17,0x03,0x19,0x03,0x1A,0x03,0x19,0x0D,0x19,0x03,0x19,0x03,0x1A,0x03,0x19,0x03,0x1A,0x67,0x1A,0x0E,0x1A,0x03,0x1A,0x03,0x1A,0x67,0x19,0x0E,0x19,0x03,0x1A,0x03,0x19,0x03,0x17,0x0D,0x17,0x16,0x15,0x03,0x16,0x03,0x17,0x03,0x19,0x03,0x17,0x03,0x16,0x03,0x15,0x0D,0x15,0x03,0x15,0x03,0x16,0x03,0x17,0x03,0x1A,0x03,0x17,0x03,0x16,0x03,0x15,0x03,0x1F,0x15,0x1F,0x03,0x1A,0x03,0x1F,0x03,0x1A,0x03,0x19,0x0D,0x19,0x03,0x19,0x03,0x1A,0x03,0x19,0x03,0x17,0x03,0x16,0x03,0x17,0x03,0x16,0x0D,0x16,0x03,0x15,0x03,0x10,0x03,0x15,0x03,0x15,0x03,0x16,0x03,0x15,0x00,0x15,0x0B,0x15,0x03,0x1F,0x03,0x1A,0x03,0x1F,0x03,0x20,0x03,0x1F,0x0D,0x1F,0x03,0x1F,0x03,0x20,0x03,0x1F,0x03,0x1A,0x03,0x1F,0x03,0x21,0x03,0x20,0x0D,0x20,0x03,0x1F,0x03,0x1A,0x03,0x1F,0x03,0x20,0x02,0x15,0x00,0x00,0x00};/************按键加减调整函数************/voidinc_set(charflag,charflag_num,ucharaddress,charlast,charfirst,charx,chary,ucharkeep){if(flag==flag_num)if(inc==0){delay(50);if(inc==0){ num=Read1302(address); num=(num/16)*10+num%16; num++;if(num==last)num=first;num=(num/10)*16+num%10;Write1302(0x8e,0x00);//允许写入Write1302(address-1,num);//写入Write1302(0x8e,0x80);//禁止写操作 }while(!inc);//检测按键松开LCD1602_write_char(x,y,Read1302(address)/16+0x30);//十 LCD1602_write_data(Read1302(address)%16+0x30);//个LCD1602_write_cmd(keep+x+1);//使光标持在改动的位置 }}voiddec_set(charflag,charflag_num,ucharaddress,charlast,charfirst,charx,chary,ucharkeep){if(flag==flag_num)if(dec==0){delay(50);if(dec==0){ num=Read1302(address); num=(num/16)*10+num%16; nu