基于STC89C52單片機的數(shù)字時鐘設(shè)計（附電路圖及源程序）

PAGE43-第九屆長通杯電子設(shè)計大賽論文基于STC89C52單片機的數(shù)字時鐘設(shè)計組長：組員：聯(lián)系方式：目錄1、系統(tǒng)方案 -3-1.1、方案比較與選擇 -3-1.1.1、單片機選擇與論證 -3-1.1.2、穩(wěn)壓電源選擇與論證 -3-1.1.3、時鐘芯片選擇與論證 -3-1.1.4、感溫器件選擇與論證 -4-1.1.5、顯示器件選擇與論證 -4-1.1.6、鍵盤形式選擇與論證 -4-2、電路與程序設(shè)計 -4-2.1、電路的設(shè)計 -4-2.1.1、總體框圖設(shè)計 -4-2.1.2、單片機最小系統(tǒng)電路 -5-2.1.3、穩(wěn)壓電源電路 -5-2.1.4、時鐘芯片電路 -6-2.1.5、按鍵電路 -7-2.1.6、蜂鳴器電路 -7-2.1.7、感溫電路 -7-2.1.8、顯示電路 -7-2.2、程序設(shè)計 -8-2.2.1、DS1302程序流程圖 -8-2.2.2、液晶顯示子程序流程圖 -9-附錄 -10-附錄1：電路原理圖 -10-附錄2：源程序 -11-1、系統(tǒng)方案1.1、方案比較與選擇1.1.1、單片機選擇與論證方案一：SST單片機。SST單片機省去了開發(fā)用的編程器和仿真器。省去了外部EEPROM、電壓監(jiān)控芯片、上電復(fù)位電路和5個UART的擴展芯片。它自帶在線下載和在線仿真功能，帶有5路PCA模塊(主成分分析)，PCA功能比普通單片機有更強的計時性。利用PCA的脈沖寬度調(diào)制（PWM）模式可產(chǎn)生一個8位PWM。方案二：STC89C52是一種低功耗、高性能CMOS8位微控制器，具有8K在系統(tǒng)可編程Flash存儲器。在單芯片上，擁有靈巧的8位CPU和在系統(tǒng)可編程Flash，使得STC89C52為眾多嵌入式控制應(yīng)用系統(tǒng)提供高靈活、超有效的解決方案。具有以下標準功能：8k字節(jié)Flash，512字節(jié)RAM，32位I/O口線，看門狗定時器，內(nèi)置4KBEEPROM，MAX810復(fù)位電路，三個16位定時器/計數(shù)器，一個6向量2級中斷結(jié)構(gòu)，全雙工串行口?；谝陨媳容^，本設(shè)計選用方案二。1.1.2、穩(wěn)壓電源選擇與論證方案一：采用集成多路輸出電源模塊。集成多路輸出電源模塊具有制作簡單，使用方便等特點，但臨時短時間內(nèi)要購買比較困難，而且價格較貴，電源組合方式固定不易選擇。方案二：采用LM7805穩(wěn)壓電路。LM7805是我們最常用到的穩(wěn)壓芯片，它的使用方便，用很簡單的電路即可以輸入一個直流穩(wěn)壓電源，而且它的輸出電壓恰好為5V，是51系列單片機運行所需的電壓?？紤]到設(shè)計成本，本設(shè)計選用方案二。1.1.3、時鐘芯片選擇與論證方案一：是一款低功耗，具有56字節(jié)非失性RAM的全BCD碼時鐘日歷實時時鐘芯片，地址和數(shù)據(jù)通過兩線雙向的串行總線的傳輸，芯片可以提供秒，分，小時等信息，每一個月的天數(shù)能自動調(diào)整。并且有閏年補償功能。AM/PM標志位決定時鐘工作于24小時或12小時模式，芯片有一個內(nèi)置的電源感應(yīng)電路，具有掉電檢測和電池切換功能。方案二：DS1302是美國DALLAS公司推出的一種高性能、低功耗、帶RAM的實時時鐘電路，它可以對年、月、日、周日、時、分、秒進行計時，具有閏年補償功能，工作電壓為2.5V～5.5V。采用三線接口與CPU進行同步通信，并可采用突發(fā)方式一次傳送多個字節(jié)的時鐘信號或RAM數(shù)據(jù)。DS1302內(nèi)部有一個31×8的用于臨時性存放數(shù)據(jù)的RAM寄存器。DS1302是DS1202的升級產(chǎn)品，與DS1202兼容，但增加了主電源/后備電源雙電源引腳，同時提供了對后備電源進行涓細電流充電的能力?？紤]到時鐘應(yīng)該具有掉電保護功能，因此本設(shè)計選用方案二。1.1.4、感溫器件選擇與論證采用DS18B20數(shù)字溫度傳感器。DS18B20數(shù)字溫度傳感器接線方便，封裝成后可應(yīng)用于多種場合，如管道式，螺紋式，磁鐵吸附式，不銹鋼封裝式，型號多種多樣，有LTM8877，LTM8874等等。封裝后的DS18B20耐磨耐碰，體積小，使用方便，封裝形式多樣，適用于各種狹小空間設(shè)備數(shù)字測溫和控制領(lǐng)域。故本設(shè)計采用DS18B20數(shù)字溫度傳感器作為感溫模塊。1.1.5、顯示器件選擇與論證方案一：數(shù)碼管。數(shù)碼管顯示能在低電壓、小電流條件下驅(qū)動發(fā)光，能與CMOS、ITL電路兼容。發(fā)光響應(yīng)時間極短(<0．1μs)，高頻特性好，單色性好，亮度高。體積小，重量輕，抗沖擊性能好。壽命長，使用壽命在10萬小時以上，甚至可達100萬小時。但顯示功能有限，只能顯示數(shù)字和個別字母。方案二：液晶顯示器。液晶顯示器每一個點在收到信號后就一直保持那種色彩和亮度，恒定發(fā)光，顯示質(zhì)量高。其接口都是數(shù)字式的，和單片機系統(tǒng)的接口更加簡單可靠，操作更加方便。功耗主要消耗在其內(nèi)部的電極和驅(qū)動IC上，因而耗電量比其它顯示器要少得多?；趯︼@示器功能的穩(wěn)定性和齊全性考慮，我們采用方案二。1.1.6、鍵盤形式選擇與論證方案一：獨立式按鍵。獨立按鍵的輸入線較多，結(jié)構(gòu)復(fù)雜，一般適用于按鍵較少，操作速度較高的場合。方案二：行列式鍵盤。行列式鍵盤由行和列線交叉組成，一般適用于按鍵較多的場合。使用4×4矩形鍵盤，這樣鍵盤模塊僅使用8根線與處理器相連，節(jié)省了系統(tǒng)資源。由于我們功能比較少，矩形鍵盤占用電路板位置較大，因此選擇方案一。2、電路與程序設(shè)計2.1、電路的設(shè)計2.1.1、總體框圖設(shè)計系統(tǒng)總體框圖如圖1所示。圖1系統(tǒng)總體框圖2.1.2、單片機最小系統(tǒng)電路宏晶公司的STC82C52是51內(nèi)核的單片機。完全兼容51系列的單片機，具有豐富的I/O口資源。并且支持在系統(tǒng)下載，不用燒寫器就可以給單片機下載程序，給調(diào)試帶來了很大的方便。因此控制模塊是以STC89C52單片機為核心的一塊最小系統(tǒng)板，如下圖2所示。圖2控制模塊原理圖2.1.3、穩(wěn)壓電源電路電源模塊采用LM7805穩(wěn)壓電路，如下圖3所示。圖3穩(wěn)壓電路原理圖2.1.4、時鐘芯片電路DS1302時鐘芯片是美國DALLAS公司推出的具有涓細電流充電能力的低功耗實時芯片，它可以對年、月、日、周、日、時、分、秒進行計時，且具有閏年補償?shù)榷喾N功能，其引腳圖如下圖4所示。圖4DS1302時鐘芯片2.1.5、按鍵電路此電路實現(xiàn)四種不同功能的轉(zhuǎn)換。按鍵一實現(xiàn)菜單功能，按鍵二實現(xiàn)加一功能，按鍵三實現(xiàn)減一功能，按鍵四實現(xiàn)始確定功能。電路圖如圖5。圖5按鍵電路2.1.6、蜂鳴器電路當整點及鬧鐘到點時，蜂鳴器響。電路圖如圖6。圖6蜂鳴器連接電路2.1.7、感溫電路DS18B20數(shù)字溫度傳感器接線方便，封裝成后可應(yīng)用于多種場合。如下圖7所示：圖7感溫原理圖2.1.8、顯示電路顯示模塊采用的是LCD1602液晶顯示，硬件原理實現(xiàn)如圖8所示。圖8顯示模塊原理圖2.2、程序設(shè)計2.2.1、DS1302程序流程圖圖9DS1302流程圖2.2.2、液晶顯示子程序流程圖開始開始初始化LCD顯示內(nèi)容寫入緩存LCD控制器啟動延時置DISP為高電平液晶屏正常顯示置DISP為低電平延時LCD控制器關(guān)閉液晶屏無顯示圖11液晶顯示流程圖附錄附錄1：電路原理圖附錄2：源程序#include<at89x52.h> #include<intrins.h> typedefunsignedcharuchar;typedefunsignedintuint;#defineLCD1602_DATAP0//1602液晶數(shù)據(jù)口sbitLCD1602_RS=P1^1;sbitLCD1602_RW=P1^2;sbitLCD1602_EN=P1^3;//1602液晶使能控制sbitDS1302_CLK=P1^4;//實時時鐘時鐘線引腳sbitDS1302_IO=P1^5;//實時時鐘數(shù)據(jù)線引腳sbitDS1302_RST=P1^6;//實時時鐘復(fù)位線引腳sbitDQ=P1^0;//18B20接口sbitBeepIO=P2^3;//蜂鳴器sbitesc=P2^1;//取消播放音樂sbitmode=P3^4;//模式鍵sbitinc=P3^5;//增加鍵sbitdec=P3^6;//減少鍵sbitok=P3^7;//OK鍵sbitlight=P3^2;//背光控制sbitACC0=ACC^0;//累加器位定義sbitACC7=ACC^7;bitfirst_flag=1,//一級主界面顯示標志second_flag,//二級菜單顯示標志third_flag,//三級菜單顯示標志playmusic,//播放音樂的標志light_flag1=1,//背光第一次計時標志light_flag=1;//二三級界面開背光標志uinttemp1,temp2,temp2t,temp3,temp4,ser;ucharcount1,sec1,min1,hour1;//定時器2使用的變量停表用ucharcount,sec,min;//定時器1使用的變量貪睡用uinttemp;//溫度暫存//////以下為播放音樂的設(shè)置#defineSYSTEM_OSC12000000#defineSOUND_SPACE4/5uintcodeFreTab[12]={262,277,294,311,330,349,369,392,415,440,466,494};//原始頻率表ucharcodeSignTab[7]={0,2,4,5,7,9,11};//1~7在頻率表中的位置ucharcodeLengthTab[7]={1,2,4,8,16,32,64}; ucharSound_Temp_TH0,Sound_Temp_TL0;//音符定時器初值暫存ucharSound_Temp_TH1,Sound_Temp_TL1;//音長定時器初值暫存bitstop;charmenu_num;//菜單號charnum;//按鍵加減調(diào)整暫存數(shù)charposition1,position2,position3,position4,position5,position6,position7;//菜單1-7的光標位置標志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,//鬧鐘標志 30x17,0x04,0x04,0x07,0x00,0x00,0x00,0x00,//攝氏度標志 40x1f,0x15,0x0a,0x04,0x0a,0x15,0x1f,0x00}; //貪睡標志5/***********************延時函數(shù)(單位ms)**************************/voiddelay(uintz){uintx;uchary;for(x=z;x>0;x--)for(y=112;y>0;y--);}/******************LCD1602驅(qū)動程序******************//******忙檢測*********/voidLCD1602_check_busy(){LCD1602_DATA=0xff;LCD1602_RS=0; LCD1602_RW=1; LCD1602_EN=1; while(LCD1602_DATA&0x80); LCD1602_EN=0; }/********************寫指令********************/voidLCD1602_write_cmd(ucharcmd){LCD1602_check_busy(); LCD1602_RS=0; LCD1602_RW=0; LCD1602_DATA=cmd; LCD1602_EN=1;_nop_();LCD1602_EN=0;}/*******************寫數(shù)據(jù)**********************/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(){/****************寫入自定義字符***************************/uchari;LCD1602_write_cmd(0x40);//CGRAM起始地址for(i=0;i<48;i++)LCD1602_write_data(self_table[i]);//寫入6個自定義字符LCD1602_write_cmd(0x38);//8位數(shù)據(jù)，雙列顯示，5*7字形LCD1602_write_cmd(0x0c);//開顯示，關(guān)光標，光標不閃爍LCD1602_write_cmd(0x01);//清屏}/**************************設(shè)置顯示坐標***************************/voidLCD1602_set_postion(ucharx,uchary){if(!y)LCD1602_write_cmd(0x80+x);elseif(y)LCD1602_write_cmd(0xc0+x);}/***********************指定位置寫字符************************/voidLCD1602_write_char(ucharx,uchary,ucharchardata){LCD1602_set_postion(x,y);LCD1602_write_data(chardata);}/***********************指定位置寫字符串************************/voidLCD1602_write_string(ucharx,uchary,uchar*string){LCD1602_set_postion(x,y);while((*string)!='\0'){ LCD1602_write_data(*string);string++;}}/******************DS1302驅(qū)動程序*******************/voidDS1302InputByte(unsignedchard)//實時時鐘寫入一字節(jié)(內(nèi)部函數(shù)){unsignedchari;ACC=d;for(i=8;i>0;i--){DS1302_IO=ACC0;//相當于匯編中的RRCDS1302_CLK=1;DS1302_CLK=0;ACC=ACC>>1;}}unsignedcharDS1302OutputByte(void)//實時時鐘讀取一字節(jié)(內(nèi)部函數(shù)){unsignedchari;for(i=8;i>0;i--){ACC=ACC>>1;//相當于匯編中的RRCACC7=DS1302_IO;DS1302_CLK=1;DS1302_CLK=0;}return(ACC);}voidWrite1302(unsignedcharucAddr,unsignedcharucDa)//ucAddr:DS1302地址,ucData:要寫的數(shù)據(jù){DS1302_RST=0;DS1302_CLK=0;DS1302_RST=1;DS1302InputByte(ucAddr);//地址，命令DS1302InputByte(ucDa);//寫1Byte數(shù)據(jù)DS1302_CLK=1;DS1302_RST=0;}unsignedcharRead1302(unsignedcharucAddr)//讀取DS1302某地址的數(shù)據(jù){unsignedcharucData;DS1302_RST=0;DS1302_CLK=0;DS1302_RST=1;DS1302InputByte(ucAddr|0x01);//地址，命令ucData=DS1302OutputByte();//讀1Byte數(shù)據(jù)DS1302_CLK=1;DS1302_RST=0;return(ucData);}voidDS1302_init(){if(Read1302(0xc1)!=0xf0) {Write1302(0x8e,0x00);//允許寫操作Write1302(0xc0,0xf0);//寫入初始化標志，系統(tǒng)上電后檢測此標志，即此子函數(shù)只會在第一次初始化一次。/******時間初始值******/Write1302(0x8c,0x10);//年Write1302(0x8a,0x03);//星期Write1302(0x88,0x05);//月Write1302(0x86,0x26);//日Write1302(0x84,0x22);//時Write1302(0x82,0x59);//分Write1302(0x80,0x55);//秒 Write1302(0xd2,0);//歌曲選擇初始Write1302(0xd4,5);//貪睡初始延時時間5分鐘Write1302(0xd6,0);//貪睡初始值關(guān)閉/******鬧鐘初始值******/Write1302(0xc2,0);//十時Write1302(0xc4,0);//時Write1302(0xc6,0);//鬧鐘標志W(wǎng)rite1302(0xc8,0);//鬧鐘次數(shù)標志////第二個鬧鐘Write1302(0xca,0);//十時Write1302(0xcc,0);//時Write1302(0xce,0);//鬧鐘標志W(wǎng)rite1302(0xd0,0);//鬧鐘次數(shù)標志W(wǎng)rite1302(0xd8,0);//背光控制開關(guān)Write1302(0xda,0x10);//背光延時時間Write1302(0x90,0xa4);//涓流充電 Write1302(0x8e,0x80);//禁止寫操作 }}/******************DS18B20驅(qū)動程序*******************/voiddelay_18b20(unsignedinti)//延時函數(shù){while(i--);}//18b20初始化函數(shù)voidInit_DS18B20(void){unsignedcharx=0;DQ=1;//DQ復(fù)位delay_18b20(8);//稍做延時DQ=0;//單片機將DQ拉低delay_18b20(80);//精確延時大于480usDQ=1;//拉高總線delay_18b20(10);x=DQ;//稍做延時后如果x=0則初始化成功x=1則初始化失敗delay_18b20(5);}//讀一個字節(jié)unsignedcharReadOneChar(void){unsignedchari=0;unsignedchardat=0;for(i=8;i>0;i--){DQ=0;//給脈沖信號dat>>=1;DQ=1;//給脈沖信號if(DQ)dat|=0x80;delay_18b20(5);}return(dat);}//寫一個字節(jié)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);}//讀取溫度unsignedintReadTemperature(void){unsignedinta=0;unsignedintb=0;unsignedintt=0;floattt;Init_DS18B20();WriteOneChar(0xCC);//跳過讀序號列號的操作WriteOneChar(0x44);//啟動溫度轉(zhuǎn)換delay_18b20(200);Init_DS18B20();WriteOneChar(0xCC);//跳過讀序號列號的操作WriteOneChar(0xBE);//讀取溫度寄存器等（共可讀9個寄存器）前兩個就是溫度a=ReadOneChar();b=ReadOneChar();t=b;t<<=8;t=t|a;tt=t*0.0625;t=tt*10+0.5;return(t);}/************一級主界面顯示函數(shù)************/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);//顯示自定義字符“年”LCD1602_write_data(Read1302(0x89)/16+0x30);//十月LCD1602_write_data(Read1302(0x89)%16+0x30);//月LCD1602_write_data(1);//顯示自定義字符“月”LCD1602_write_data(Read1302(0x87)/16+0x30);//十日LCD1602_write_data(Read1302(0x87)%16+0x30);//日LCD1602_write_data(2);//顯示自定義字符“日”if(Read1302(0xd7))LCD1602_write_char(9,1,5);//顯示自定義字符貪睡標志elseLCD1602_write_char(9,1,'');LCD1602_write_string(12,0,week[Read1302(0x8b)-1]);//顯示星期if(Read1302(0xc7)||Read1302(0xcf))LCD1602_write_char(10,1,3);//顯示自定義字符鬧鐘標志elseLCD1602_write_char(10,1,'');LCD1602_write_char(0,1,Read1302(0x85)/16+0x30);//十時LCD1602_write_data(Read1302(0x85)%16+0x30);//時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);//溫度顯示LCD1602_write_data(temp2+0x30);LCD1602_write_data(0x2E);LCD1602_write_data(temp3+0x30);LCD1602_write_data(4);}/****************定時器2初始化函數(shù)***********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;}/**************定時器1初始化函數(shù)*************貪睡用**************/voidinit_timer1(){TMOD=0x10;TH1=(65536-10000)/256;//10msTL1=(65536-10000)%256; EA=1;ET1=1;TR1=1;}/************二級菜單顯示函數(shù)************/voidsecond_interface(){LCD1602_write_char(0,(menu_num*3)%2,0x7E);//三角形指示符號LCD1602_write_char(0,!((menu_num*3)%2),'');//清除殘留顯示三角形if(!((menu_num*3)%2))//判斷是否要往液晶寫入顯示,menu_num每跳變2時寫一次{LCD1602_write_string(1,0,menu[menu_num]);//1602液晶第一行顯示LCD1602_write_string(1,1,menu[menu_num+1]);//1602液晶第二行顯示}elseif((menu_num*3)%2)//防止從三級界面回來時二級界面不顯示了{LCD1602_write_string(1,0,menu[menu_num-1]);//1602液晶第一行顯示LCD1602_write_string(1,1,menu[menu_num]);//1602液晶第二行顯示} }/************三級菜單顯示函數(shù)************/voidthird_interface(){switch(menu_num){case0:{if(!position1)//時間設(shè)置界面,僅進入三級菜單界面時刻顯示一下{ 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);//顯示自定義字符“年”LCD1602_write_data(Read1302(0x89)/16+0x30); //十月LCD1602_write_data(Read1302(0x89)%16+0x30);//月LCD1602_write_data(1);//顯示自定義字符“月”LCD1602_write_data(Read1302(0x87)/16+0x30); //十日LCD1602_write_data(Read1302(0x87)%16+0x30);//日LCD1602_write_data(2);//顯示自定義字符“日” LCD1602_write_string(12,0,week[Read1302(0x8b)-1]);//顯示星期 LCD1602_write_char(0,1,Read1302(0x85)/16+0x30);//十時LCD1602_write_data(Read1302(0x85)%16+0x30); //時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);//第一次進入三級菜單時將光標放的位置position1=1; }}break;case1:{if(!position2) //鬧鐘設(shè)置界面 {LCD1602_write_char(0,0,Read1302(0xc3)/16+0x30);//十時LCD1602_write_data(Read1302(0xc3)%16+0x30); //時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)]);//鬧鐘標志LCD1602_write_string(10,0,alarm_times[Read1302(0xc9)]);//鬧鐘次數(shù)標志////////第二個鬧鐘LCD1602_write_char(0,1,Read1302(0xcb)/16+0x30);//十時LCD1602_write_data(Read1302(0xcb)%16+0x30); //時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)]);//鬧鐘標志LCD1602_write_string(10,1,alarm_times[Read1302(0xd1)]);//鬧鐘次數(shù)標志LCD1602_write_cmd(0x80+1);//第一次進入三級菜單時將光標放的位置position2=1; }}break;case2:{//鬧鈴音樂選擇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);//首次進入光標保持的位置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);//首次進入光標保持的位置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;//關(guān)背光 PCON=2;//進入掉電模式}break; }}/************播放音樂函數(shù)************/voidInitialSound(){playmusic=1;//播放音樂標志置位BeepIO=0; Sound_Temp_TH1=(65535-(1/1200)*SYSTEM_OSC)/256;//計算TL1應(yīng)裝入的初值(10ms的初裝值)Sound_Temp_TL1=(65535-(1/1200)*SYSTEM_OSC)%256;//計算TH1應(yīng)裝入的初值TH1=Sound_Temp_TH1;TL1=Sound_Temp_TL1;TMOD|=0x11;ET0=1;ET1=0;TR0=0;TR1=0;EA=1;}voidBeepTimer0()interrupt1//音符發(fā)生中斷{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];//新的頻率表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++)//根據(jù)調(diào)號及升降八度來生成新的頻率表{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)//計算歌曲長度{SoundLength+=2;}Point=0;Tone=Sound[Point]; Length=Sound[Point+1];//讀出第一個音符和它時時值LDiv0=12000/Speed;//算出1分音符的長度(幾個10ms) LDiv4=LDiv0/4;//算出4分音符的長度LDiv4=LDiv4-LDiv4*SOUND_SPACE;//普通音最長間隔標準TR0=0;TR1=1;while(Point<SoundLength){SL=Tone%10; //計算出音符SM=Tone/10%10; //計算出高低音SH=Tone/100; //計算出是否升半CurrentFre=NewFreTab[SignTab[SL-1]+SH];//查出對應(yīng)音符的頻率 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);//計算計數(shù)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是對中斷延時的補償 }SLen=LengthTab[Length%10];//算出是幾分音符XG=Length/10%10;//算出音符類型(0普通1連音2頓音)FD=Length/100;LDiv=LDiv0/SLen;//算出連音音符演奏的長度(多少個10ms)if(FD==1)LDiv=LDiv+LDiv/2;if(XG!=1) if(XG==0)//算出普通音符的演奏長度if(SLen<=4) LDiv1=LDiv-LDiv4; elseLDiv1=LDiv*SOUND_SPACE; elseLDiv1=LDiv/2;//算出頓音的演奏長度elseLDiv1=LDiv;if(SL==0)LDiv1=0;LDiv2=LDiv-LDiv1;//算出不發(fā)音的長度if(SL!=0) {TR0=1;for(i=LDiv1;i>0;i--)//發(fā)規(guī)定長度的音 {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--)//音符間的間隔 {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,//愛情呼叫轉(zhuǎn)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};/************按鍵加減調(diào)整函數(shù)************/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);//允許寫入Write1302(address-1,num);//寫入Write1302(0x8e,0x80);//禁止寫操作 }while(!inc);//檢測按鍵松開LCD1602_write_char(x,y,Read1302(address)/16+0x30);//十 LCD1602_write_data(Read1302(address)%16+0x30);//個LCD1602_write_cmd(keep+x+1);//使光標持在改動的位置 }}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