基于單片機(jī)的電子琴設(shè)計(jì)

.鄭州航空工業(yè)管理學(xué)院?jiǎn)纹瑱C(jī)課程設(shè)計(jì)說明書 屆 電子信息工程 專業(yè) 班級(jí)題 目 基于單片機(jī)的電子琴設(shè)計(jì) 學(xué) 號(hào) 姓 名 指導(dǎo)教師 二一年月日1、 電子琴的基本原理1、本次設(shè)計(jì)的內(nèi)容是：具有7個(gè)基本音符的按鍵，能夠彈奏簡(jiǎn)單樂曲；能夠播放存貯在內(nèi)存中的3首樂曲；每次按下一個(gè)8鍵可以播放一首歌。2、整體工作原理： 采用STC89C52單片機(jī)作為主控芯片，設(shè)置了鍵盤、蜂鳴器等外圍器件，另外還用到一些簡(jiǎn)單器件如：四位數(shù)碼管和PNP型三極管及電阻等。利用按鍵實(shí)現(xiàn)音符和音調(diào)的輸入；四位的數(shù)碼管進(jìn)行被操作的按鍵顯示；用PNP型三極管實(shí)現(xiàn)低音頻功率放大；最后用蜂鳴器發(fā)音。主控芯片采用STC89C52單片機(jī)，它是大規(guī)模集成電路技術(shù)發(fā)展的產(chǎn)物，具有高性能、高速度、體積小、價(jià)格低廉、穩(wěn)定可靠、應(yīng)用廣泛的特點(diǎn)，同時(shí)具有強(qiáng)大的控制功能和靈活的編程實(shí)現(xiàn)特性。 3、發(fā)音原理：若要產(chǎn)生音頻脈沖，只要算出某一音頻的周期（頻率），再將此周期除以2，即為半周期的時(shí)間。利用定時(shí)器計(jì)時(shí)半周期時(shí)間，每當(dāng)計(jì)時(shí)終止后就將P1.7反相，然后重復(fù)計(jì)時(shí)再反相。就可在P1.7引腳上得到此頻率的脈沖。利用STC89C52的內(nèi)部定時(shí)器使其工作計(jì)數(shù)器模式（MODE1）下，改變計(jì)數(shù)值TH0及TL0以產(chǎn)生不同頻率的方法產(chǎn)生不同音階。例如，頻率為523Hz，其周期T1/5231912s，因此只要令計(jì)數(shù)器計(jì)時(shí)956s/1s956，每計(jì)數(shù)956次時(shí)將I/O反相，就可得到中音DO（523Hz）。計(jì)數(shù)脈沖值與頻率的關(guān)系式是：Nfi2fr，式中，N是計(jì)數(shù)值；fi是機(jī)器頻率（晶體振蕩器為12MHz時(shí)，其頻率為1MHz）；fr是想要產(chǎn)生的頻率。其計(jì)數(shù)初值T的求法如下：T65536N65536fi2fr例如：設(shè)K65536，fi1MHz，求中音DO（261Hz）。T65536N65536fi2fr6553610000002fr65536500000/fr，中音DO的T65536500000/52364580單片機(jī)12MHZ晶振，中音符與計(jì)數(shù)T0相關(guān)的計(jì)數(shù)值如表所示： 音符 頻率（HZ）計(jì)數(shù)值（T值）音符頻率（HZ）計(jì)數(shù)值（T值）低1DO 26263628#4FA#74064860#1DO# 27763737中5SO78464898低2RE29463835#5SO#83194934#2RE#31163928中6LA88064948低3MI33064021#中6LA#93264494低FA34964103中7SI96865030#4FA#37064185低1DO104665058低SO39264260#1DO#110965085#5SO#41564331高2RE117565110低6LA44064400#2RE#124565134#6LA#46664463高3MI131865157低7SI49464524高4FA139765178中1DO52364580#4FA#149065198#1DO#55464633高5SO156865217中2RE58764633#5SO#166165235#2RE#62264884高6LA176065252中3MI65964732#6LA#186565268中4FA69864820高7SI196765283 用單片機(jī)播放音樂，或者彈奏電子琴，實(shí)際上是按照特定的頻率，輸出一連串的方波。為了輸出合適的方波，首先應(yīng)該知道音符與頻率的關(guān)系。 2、 電子時(shí)鐘的硬件設(shè)計(jì)1、硬件原理圖： 本系統(tǒng)有主控芯片STC89C52、發(fā)音單元、顯示模塊、按鍵模塊組成。硬件電路要以單片機(jī)作為主控芯片，實(shí)現(xiàn)按鍵輸入音符和音調(diào)，兩位數(shù)碼管的顯示以及低音頻功率放大和蜂鳴器發(fā)音。針對(duì)本設(shè)計(jì)的功能和用途，采用STC89C52單片機(jī)更好.2、時(shí)鐘電路 單片機(jī)內(nèi)部具有一個(gè)高增益反相放大器，用于構(gòu)成振蕩器。通常在引腳Xl和X2跨接石英晶體和兩個(gè)補(bǔ)償電容構(gòu)成自激振蕩器，結(jié)構(gòu)圖2中X1、C1、C2?？梢愿鶕?jù)情況選擇6MHz、12MHz或24MHz頻率的石英晶體，補(bǔ)償電容通常選擇30pF左右的瓷片電容。圖-時(shí)鐘電路 3、鍵盤設(shè)計(jì) 鍵盤可以分為2類：獨(dú)立連接式鍵盤和矩陣式鍵盤。本設(shè)計(jì)采用矩陣式按鍵，矩陣式鍵盤由行線和列線組成，按鍵位于行、列線的交叉點(diǎn)上。矩陣式鍵盤中，行、列線分別連接到按鍵開關(guān)的兩端，行線通過上拉電阻接到+5V上當(dāng)無鍵按下時(shí)，行線處于高電平狀態(tài)；當(dāng)有鍵按下時(shí)，行、列線將導(dǎo)通，此時(shí)，行線電平將由與此行線相連的列線電平?jīng)Q定。這是識(shí)別按鍵是否按下的關(guān)鍵。圖-矩陣鍵盤4、元件清單 原件名稱數(shù)量焊接位置電源部分USB座1USBUSB線1雙排針（2）1CONN1跳帽2104電容0.1uF6C2,5,6,7,8,9,11LED燈1D1電阻2K1R2最小系統(tǒng)部分40針座1U1STC89C521晶振12MHz1Y1電容20pF2C3,C4復(fù)位鍵1SW_RST電阻10K1R1蜂鳴器1LS1+三極管9015(密碼鎖，電子琴)5Q1Q4, Q9電阻3301R3鍵盤顯示、通信部分16針座1U2MAX2321單排針（5）1UART按鍵(密碼鎖，電子琴)8KEY1KEY8單排針（3）1SWITCH1跳帽14位LED (密碼鎖，電子琴)1DIGILED1電阻4.7K8R14R21電阻3308R6R13 5 、發(fā)音部分設(shè)計(jì) 如下圖所示，發(fā)音電路是由蜂鳴器、三極管、上拉電阻構(gòu)成。由三極管來驅(qū)動(dòng)揚(yáng)聲器發(fā)音的，同時(shí)加上拉電阻增強(qiáng)驅(qū)動(dòng)電流，提高驅(qū)動(dòng)能力。圖4發(fā)音電路6、硬件調(diào)試 硬件調(diào)試主要是針對(duì)單片機(jī)部分進(jìn)行的調(diào)試。在上電之前，先確保電路中不存在斷路或短路情況，這一工作是整個(gè)調(diào)試工作的第一步，也是非常重要的一個(gè)步驟。在這部分調(diào)試中主要使用的工具是萬用表，用來完成檢測(cè)電路中是否存在斷路或者短路情況的任務(wù)。注意焊點(diǎn)之間，確保焊點(diǎn)沒有短接在一起，同時(shí)注意焊點(diǎn)的美觀，確保沒有開路以及短路的現(xiàn)象出現(xiàn)在確保硬件電路正常且無異常情況(斷路或短路)的情況下方可上電調(diào)試，上電調(diào)試的目的是檢驗(yàn)電路是否接錯(cuò)，同時(shí)還要檢驗(yàn)原理是否正確，在本次設(shè)計(jì)中，上電調(diào)試主要是檢測(cè)單片機(jī)控制部分、數(shù)碼管點(diǎn)亮部分、和音頻轉(zhuǎn)換電路硬件調(diào)試，3、 電子時(shí)鐘的軟件設(shè)計(jì)1、鍵盤掃描程序： 檢測(cè)是否有按鍵按下，有按鍵按下則記錄按下鍵的鍵值，并跳轉(zhuǎn)至功能轉(zhuǎn)移程序；無按鍵按下，則返回鍵盤掃描程序繼續(xù)檢測(cè)。 2、功能轉(zhuǎn)移程序： 對(duì)檢測(cè)到的按鍵值進(jìn)行判斷，是琴鍵則跳轉(zhuǎn)至琴鍵處理程序，是功能鍵則跳轉(zhuǎn)至相應(yīng)的功能程序，我們?cè)O(shè)計(jì)的功能程序有兩種，即音色調(diào)節(jié)功能和自動(dòng)播放樂曲的功能。 3、琴鍵處理程序：根據(jù)檢測(cè)到的按鍵值，查詢音調(diào)表，給計(jì)時(shí)器賦值，使發(fā)出相應(yīng)頻率的聲音。 4、自動(dòng)播放歌曲程序：檢測(cè)到按鍵按下的是自動(dòng)播放歌曲功能鍵后執(zhí)行該程序，電子琴會(huì)自動(dòng)播放事先已經(jīng)存放的歌曲，歌曲播放完畢之后自動(dòng)返回至鍵盤掃描程序，繼續(xù)等待是否有按鍵按下。 開 始 5、程序流程圖T0初始化并開中斷允許T0中斷按鍵是否成功按下 識(shí)別按鍵功能 根據(jù)按鍵功能，轉(zhuǎn)入音符T到T0 啟動(dòng)T0工作按鍵釋放成功否 停止T0工作 圖5 流程圖 6、設(shè)計(jì)源程序： /*說明* 曲譜存貯格式 unsigned char code MusicName音高，音長，音高，音長., 0,0;末尾:0,0 表示結(jié)束(Important)音高由三位數(shù)字組成：個(gè)位是表示 17 這七個(gè)音符 ；十位是表示音符所在的音區(qū):1-低音，2-中音，3-高音；百位表示這個(gè)音符是否要升半音: 0-不升，1-升半音。音長最多由三位數(shù)字組成： 個(gè)位表示音符的時(shí)值，其對(duì)應(yīng)關(guān)系是： |數(shù)值(n): |0 |1 |2 |3 | 4 | 5 | 6 |幾分音符: |1 |2 |4 |8 |16 |32 |64 音符=2n 十位表示音符的演奏效果(0-2): 0-普通，1-連音，2-頓音 百位是符點(diǎn)位: 0-無符點(diǎn)，1-有符點(diǎn) 調(diào)用演奏子程序的格式 Play(樂曲名,調(diào)號(hào),升降八度,演奏速度);|樂曲名 : 要播放的樂曲指針,結(jié)尾以(0,0)結(jié)束;|調(diào)號(hào)(0-11) :是指樂曲升多少個(gè)半音演奏;|升降八度(1-3) : 1:降八度, 2:不升不降, 3:升八度;|演奏速度(1-12000):值越大速度越快;*/#define _SOUNDPLAY_H_REVISION_FIRST_#include /*#define SYSTEM_OSC 12000000/定義晶振頻率12000000HZ#define SOUND_SPACE 4/5 /定義普通音符演奏的長度分率,/每4分音符間隔sbit BeepIO = P17;/定義輸出管腳unsigned int code FreTab12 = 262,277,294,311,330,349,369,392,415,440,466,494 ; /原始頻率表unsigned char code SignTab7 = 0,2,4,5,7,9,11 ; /17在頻率表中的位置unsigned char code LengthTab7= 1,2,4,8,16,32,64 ;unsigned char Sound_Temp_TH0,Sound_Temp_TL0;/音符定時(shí)器初值暫存 unsigned char Sound_Temp_TH1,Sound_Temp_TL1;/音長定時(shí)器初值暫存/*void InitialSound(void)BeepIO = 1;Sound_Temp_TH1 = (65535-(1/1200)*SYSTEM_OSC)/256;/ 計(jì)算TL1應(yīng)裝入的初值 (10ms的初裝值)Sound_Temp_TL1 = (65535-(1/1200)*SYSTEM_OSC)%256;/ 計(jì)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;void BeepTimer0(void) interrupt 1/音符發(fā)生中斷BeepIO = !BeepIO;TH0 = Sound_Temp_TH0; TL0 = Sound_Temp_TL0;/*void Play(unsigned char *Sound,unsigned char Signature,unsigned Octachord,unsigned int Speed)unsigned int NewFreTab12;/新的頻率表unsigned char i,j;unsigned int Point,LDiv,LDiv0,LDiv1,LDiv2,LDiv4,CurrentFre,Temp_T,SoundLength;unsigned char Tone,Length,SL,SH,SM,SLen,XG,FD;for(i=0;i 11)j = j-12;NewFreTabi = FreTabj*2;elseNewFreTabi = FreTabj;if(Octachord = 1)NewFreTabi=2;else if(Octachord = 3)NewFreTabi=2;SoundLength = 0;while(SoundSoundLength != 0x00)/計(jì)算歌曲長度SoundLength+=2;Point = 0;Tone = SoundPoint;Length = SoundPoint+1; / 讀出第一個(gè)音符和它時(shí)時(shí)值LDiv0 = 12000/Speed;/ 算出1分音符的長度(幾個(gè)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(biāo)準(zhǔn) TR0 = 0;TR1 = 1;while(Point = 2; /低音 if (SM=3) CurrentFre = 2; /高音Temp_T = 65536-(50000/CurrentFre)*10/(12000000/SYSTEM_OSC);/計(jì)算計(jì)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(duì)中斷延時(shí)的補(bǔ)償 SLen=LengthTabLength%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(gè)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 (SLen0;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=1;for(i=LDiv2;i0;i-) /音符間的間隔while(TF1=0);TH1 = Sound_Temp_TH1;TL1 = Sound_Temp_TL1;TF1=0;Point+=2; Tone=SoundPoint;Length=SoundPoint+1;BeepIO = 1;/*#endif#include #include SoundPlay.h/*Music*unsigned char code sound1= 0x15,0x02, 0x00,0x00 ;/1unsigned char code sound2= 0x16,0x02, 0x00,0x00 ;/2unsigned char code sound3= 0x17,0x02, 0x00,0x00 ;/3unsigned char code sound4= 0x18,0x02, 0x00,0x00 ;/4unsigned char code sound5= 0x19,0x02, 0x00,0x00 ;/5unsigned char code sound6= 0x1A,0x02, 0x00,0x00 ;/6unsigned char code sound7= 0x1B,0x02, 0x00,0x00 ;/7unsigned char key;/揮著翅膀的女孩unsigned char code Music_Girl= 0x17,0x02, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x15,0x03, 0x16,0x03, 0x17,0x03, 0x17,0x03, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x16,0x03, 0x17,0x03, 0x18,0x02, 0x18,0x03, 0x17,0x03, 0x15,0x02, 0x18,0x03, 0x17,0x03, 0x18,0x02, 0x10,0x03, 0x15,0x03, 0x16,0x02, 0x15,0x03, 0x16,0x03, 0x17,0x02, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x1A,0x03, 0x1B,0x03, 0x1F,0x03, 0x1F,0x03, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x16,0x03, 0x17,0x03, 0x18,0x03, 0x17,0x03, 0x18,0x03, 0x1F,0x03, 0x1F,0x02, 0x16,0x03, 0x17,0x03, 0x18,0x03, 0x17,0x03, 0x18,0x03, 0x20,0x03, 0x20,0x02, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x20,0x03, 0x21,0x03, 0x20,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x1F,0x03, 0x1B,0x03, 0x19,0x03, 0x19,0x03, 0x15,0x03, 0x1A,0x66, 0x1A,0x03, 0x19,0x03, 0x15,0x03, 0x15,0x03, 0x17,0x03, 0x16,0x66, 0x17,0x04, 0x18,0x04, 0x18,0x03, 0x19,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x20,0x03, 0x21,0x03, 0x20,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x1F,0x03, 0x1B,0x03, 0x19,0x03, 0x19,0x03, 0x15,0x03, 0x1A,0x66, 0x1A,0x03, 0x19,0x03, 0x19,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x00, 0x1A,0x03, 0x1A,0x03, 0x1A,0x03, 0x1B,0x03, 0x1B,0x03, 0x1A,0x03, 0x19,0x03, 0x19,0x02, 0x17,0x03, 0x15,0x17, 0x15,0x03, 0x16,0x03, 0x17,0x03, 0x18,0x03, 0x17,0x04, 0x18,0x0E, 0x18,0x03, 0x17,0x04, 0x18,0x0E, 0x18,0x66, 0x17,0x03, 0x18,0x03, 0x17,0x03, 0x18,0x03, 0x20,0x03, 0x20,0x02, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x20,0x03, 0x21,0x03, 0x20,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x1F,0x04, 0x1B,0x0E, 0x1B,0x03, 0x19,0x03, 0x19,0x03, 0x15,0x03, 0x1A,0x66, 0x1A,0x03, 0x19,0x03, 0x15,0x03, 0x15,0x03, 0x17,0x03, 0x16,0x66, 0x17,0x04, 0x18,0x04, 0x18,0x03, 0x19,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x20,0x03, 0x21,0x03, 0x20,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x66, 0x1F,0x03, 0x1B,0x03, 0x19,0x03, 0x19,0x03, 0x15,0x03, 0x1A,0x66, 0x1A,0x03, 0x19,0x03, 0x19,0x03, 0x1F,0x03, 0x1B,0x03, 0x1F,0x00, 0x18,0x02, 0x18,0x03, 0x1A,0x03, 0x19,0x0D, 0x15,0x03, 0x15,0x02, 0x18,0x66, 0x16,0x02, 0x17,0x02, 0x15,0x00, 0x00,0x00;/同一首歌unsigned char code Music_Same= 0x0F,0x01, 0x15,0x02, 0x16,0x02, 0x17,0x66, 0x18,0x03, 0x17,0x02, 0x15,0x02, 0x16,0x01, 0x15,0x02, 0x10,0x02, 0x15,0x00, 0x0F,0x01, 0x15,0x02, 0x16,0x02, 0x17,0x02, 0x17,0x03, 0x18,0x03, 0x19,0x02, 0x15,0x02, 0x18,0x66, 0x17,0x03, 0x19,0x02, 0x16,0x03, 0x17,0x03, 0x16,0x00, 0x17,0x01, 0x19,0x02, 0x1B,0x02, 0x1B,0x70, 0x1A,0x03, 0x1A,0x01, 0x19,0x02, 0x19,0x03, 0x1A,0x03, 0x1B,0x02, 0x1A,0x0D, 0x19,0x03, 0x17,0x00, 0x18,0x66, 0x18,0x03, 0x19,0x02, 0x1A,0x02, 0x19,0x0C, 0x18,0x0D, 0x17,0x03, 0x16,0x01, 0x11,0x02, 0x11,0x03, 0x10,0x03, 0x0F,0x0C, 0x10,0x02, 0x15,0x00, 0x1F,0x01, 0x1A,0x01, 0x18,0x66, 0x19,0x03, 0x1A,0x01, 0x1B,0x02, 0x1B,0x03, 0x1B,0x03, 0x1B,0x0C, 0x1A,0x0D, 0x19,0x03, 0x17,0x00, 0x1F,0x01, 0x1A,0x01, 0x18,0x66, 0x19,0x03, 0x1A,0x01, 0x10,0x02, 0x10,0x03, 0x10,0x03, 0x1A,0x0C, 0x18,0x0D, 0x17,0x03, 0x16,0x00, 0x0F,0x01, 0x15,0x02, 0x16,0x02, 0x17,0x70, 0x18,0x03, 0x17,0x02, 0x15,0x03, 0x15,0x03, 0x16,0x66, 0x16,0x03, 0x16,0x02, 0x16,0x03, 0x15,0x03, 0x10,0x02, 0x10,0x01, 0x11,0x01, 0x11,0x66, 0x10,0x03, 0x0F,0x0C, 0x1A,0x02, 0x19,0x02, 0x16,0x03, 0x16,0x03, 0x18,0x66, 0x18,0x03, 0x18,0x02, 0x17,0x03, 0x16,0x03, 0x19,0x00, 0x00,0x00 ;/兩只蝴蝶 unsigned char code Music_Two = 0x17,0x03, 0x16,0x03, 0x17,0x01, 0x16,0x03, 0x17,0x03, 0x16,0x03, 0x15,0x01, 0x10,0x03, 0x15,0x03, 0x16,0x02, 0x16,0x0D, 0x17,0x03, 0x16,0x03, 0x15,0x03, 0x10,0x03, 0x10,0x0E, 0x15,0x04, 0x0F,0x01, 0x17,0x03, 0x16,0x03, 0x17,0x01, 0x16,0x03, 0x17,0x03, 0x16,0x03, 0x15,0x01, 0x10,0x03, 0x15,0x03, 0x16,0x02, 0x16,0x0D, 0x17,0x03, 0x16,0x03, 0x15,0x03, 0x10,0x03, 0x15,0x03, 0x16,0x01, 0x17,0x03, 0x16,0x03, 0x17,0x01, 0x16,0x03, 0x17,0x03, 0x16,0x03, 0x15,0x01, 0x10,0x03, 0x15,0x03, 0x16,0x02, 0x16,0x0D, 0x17,0x03, 0x16,0x03, 0x15,0x03, 0x10,0x03, 0x10,0x0E, 0x15,0x04, 0x0F,0x01, 0x17,0x03, 0x19,0x03, 0x19,0x01, 0x19,0x03, 0x1A,0x03, 0x19,0x03, 0x17,0x01, 0x16,0x03, 0x16,0x03, 0x16,0x02, 0x16,0x0D, 0x17,0x03, 0x16,0x03, 0x15,0x03, 0x10,0x03, 0x10,0x0D, 0x15,0x00, 0x19,0x03, 0x19,0x03, 0x1A,0x03, 0x1F,0x03, 0x1B,0x03, 0x1B,0x03, 0x1A,0x03, 0x17,0x0D, 0x16,0x03, 0x16,0x03, 0x16,0x0D, 0x17,0x01, 0x17,0x03, 0x17,0x03, 0x19,0x03, 0x1A,0x02, 0x1A,0x02, 0x10,0x03, 0x17,0x0D, 0x16,0x03, 0x16,0x01, 0x17,0x03, 0x19,0x03, 0x19,0x03, 0x17,0x03, 0x19,0x02, 0x1F,0x02, 0x1B,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04, 0x17,0x02, 0x1A,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04, 0x1A,0x03, 0x19,0x03, 0x17,0x03, 0x16,0x03, 0x17,0x0D, 0x16,0x03, 0x17,0x03, 0x19,0x01, 0x19,0x03, 0x19,0x03, 0x1A,0x03, 0x1F,0x03, 0x1B,0x03, 0x1B,0x03, 0x1A,0x03, 0x17,0x0D, 0x16,0x03, 0x16,0x03, 0x16,0x03, 0x17,0x01, 0x17,0x03, 0x17,0x03, 0x19,0x03, 0x1A,0x02, 0x1A,0x02, 0x10,0x03, 0x17,0x0D, 0x16,0x03, 0x16,0x01, 0x17,0x03, 0x19,0x03, 0x19,0x03, 0x17,0x03, 0x19,0x03, 0x1F,0x02, 0x1B,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04, 0x17,0x02, 0x1A,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04, 0x17,0x16, 0x1A,0x03, 0x1A,0x03, 0x1A,0x0E, 0x1B,0x04, 0x1A,0x03, 0x19,0x03, 0x17,0x03, 0x16,0x03, 0x0F,0x02, 0x10,0x03, 0x15,0x00, 0x00,0x00 ;/*void delayms(unsigned int z)unsigned int x,y;for (x = z; x0; x-)for(y=110; y0; y- );void keyscan()/矩陣鍵盤掃描函數(shù)unsigned char x,y;P3=0xf0;if (P3!=0xf0) delayms(10); if (P3!=0xf0) x=P3&0xf0; P3=0x8f; y=P3&0x8f; key=x|y; while(