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求助大神，這個單片機驅動蜂鳴器唱歌程序為什么不能發聲音?

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  1. #include <reg52.h>
  2. #define uchar unsigned char
  3. #define uint  unsigned int
  4. sbit key1=P3^2;//按key1可切換下一曲
  5. sbit key2=P3^3;//按key2可切換上一曲
  6. sbit speaker=P3^7;//揚聲器輸出口

  8. char count;//歌曲標志        
  9. uchar timeh,timel,i,k=0,counter=0;//用到的各個變量
  10. uchar code  graph[] =  //8*8點陣動態圖數據
  11. {
  12.         0x00,0x82,0x82,0x86,0xA6,0xB7,0xFF,0xFF,
  13.         0x00,0x00,0x00,0x10,0x12,0x9B,0xBF,0xFF,
  14.         0x00,0x00,0x00,0x80,0xCA,0xEE,0xFF,0xFF,
  15.         0x42,0x42,0x52,0x52,0x73,0x7B,0xFB,0xFF,
  16.         0x42,0x42,0x66,0x76,0xFE,0xFF,0xFF,0xFF,
  17.         0x04,0x04,0x44,0x4E,0x4E,0x7F,0xFF,0xFF,
  18.         0x08,0x88,0x8A,0x8E,0xAE,0xFF,0xFF,0xFF,
  19.         0x10,0x10,0x12,0x1A,0x1A,0x9B,0xFF,0xFF,
  20. };
  21. //————————————寂寞沙洲冷————————————//
  22. uchar code jmszl[]={
  23.         0x12,0x12,0x22,0x32,0x31,0x22,0x21,0x22,
  24.         //自你走后心憔悴
  25.         0x21,0x31,0x51,0x52,0x31,0x52,0x61,0x15,0x14,
  26.         //白色油桐風中紛飛
  27.         0x51,0x52,0x31,0x52,0x62,0x13,0x11,0x13,0x32,0x28,0x08,0x28,
  28.         //落花似人有情 這個季節
  29.         0x31,0x32,0x31,0x32,0x11,0x21,0x51,0x52,0x51,0x52,
  30.         //河畔的風放肆拼命地吹
  31.         0x51,0x51,0x31,0x32,0x31,0x32,0x81,0x72,0x63,
  32.         //不斷撥弄離人的眼淚
  33.         0x62,0x71,0x81,0x72,0x61,0x61,0x52,0x31,0x21,0x32,0x51,0x54,
  34.         //那樣濃烈的愛再也無法給
  35.         0x22,0x12,0x11,0x12,0x11,0x12,0x12,0x14,0x26,0x32,0x26,
  36.         //傷感一夜一夜
  37.         0x32,0x61,0x51,0x51,0x31,0x31,0x21,0x31,0x51,0x61,0x51,0x31,0x51,
  38.         //當記憶的線纏繞過往支離破碎
  39.         0x02,0x32,0x81,0x81,0x81,0x81,0x62,0x52,0x34,
  40.         //是慌亂占據了心扉                                                                                                                                 
  41.         0x31,0x81,0x81,0x81,0x61,0x91,0x82,
  42.         //有花兒伴著蝴蝶
  43.         0x51,0x51,0x51,0x51,0x31,0x61,0x53,
  44.         //孤雁可以雙飛        
  45.         0x21,0x11,0x21,0x11,0x22,0x11,0x21,0x26,
  46.         //夜深人靜獨徘徊
  47.         0x32,0x61,0x51,0x51,0x31,0x31,0x21,0x31,0x51,0x61,0x51,0x31,0x51,0x52,
  48.         //當幸福戀人寄來紅色分享喜悅
  49.         0x31,0x31,0x81,0x81,0x81,0x61,0x91,0x81,0x61,0x31,0x56,
  50.         //閉上雙眼難過頭也不敢回
  51.         0x32,0x32,0x81,0x81,0x81,0x81,0x91,0x81,0x61,0x81,0x61,0x51,0x31,0x51,0x34,
  52.         //仍然撿盡寒枝不肯安歇微帶著后悔
  53.         0x21,0x31,0x51,0x31,0x21,0x11,0x61,0x21,0x16,0xff
  54.         //寂寞沙洲我該思念誰
  55. };
  56. //—————————————————勞動最光榮———————————————————//
  57. uchar code ldzgr[]=
  58. {
  59.         0x52,0x82,0x82,0x52,0x62,0x62,0x54,0x32,0x52,0x12,0x32,0x28,
  60.         //太陽光，金亮亮，雄雞唱三唱；
  61.         0x52,0x84,0x52,0x62,0x62,0x54,0x52,0x81,0xA1,0x92,0x52,0x88,
  62.         //花兒 醒來了，鳥兒忙梳妝
  63.         0x83,0x91,0x82,0x52,0x62,0x62,0x54,0x33,0x81,0x62,0x52,0x12,0x32,0x24,
  64.         //小喜鵲 造新房，小蜜蜂 采蜜糖
  65.         0x12,0x11,0x21,0x32,0x51,0x51,0x62,0x52,0x84,0x82,0x51,0x61,0x84,0xA4,0x92,
  66.         0x52,0x86,0x02,
  67.         //幸福的生活從哪里來？要靠勞動來創造
  68.         0x52,0x81,0x81,0x82,0x52,0x62,0x61,0x81,0x54,0x32,0x51,0x61,0x53,0x31,0x12,
  69.         0x32,0x24,
  70.         //青青的葉兒 紅紅的花，小蝴蝶 貪玩耍
  71.         0x52,0x82,0x82,0x52,0x62,0x62,0x54,0x51,0x61,0x81,0xA1,0x92,0x52,0x88,
  72.         //不愛勞動 不學習，我們大家不學它
  73.         0x83,0x91,0x82,0x52,0x62,0x62,0x54,0x33,0x81,0x62,0x52,0x12,0x32,0x24,
  74.         //要學喜鵲 造新房，要學蜜蜂 采蜜糖
  75.         0x12,0x11,0x21,0x32,0x52,0x82,0x52,0x68,0x52,0x61,0x61,0x84,0xA4,0x92,0x52,
  76.         0x84,0xff//歌曲結束符號
  77.         //勞動的快樂 說不盡，勞動的創造 最光榮
  78. };
  79. //—————————————————唯一——————————————————//
  80. uchar code wy[]=
  81. {         
  82.         0x04,0x43,0x43,0x43,0x33,0x23,0x13,0x33,0x54,0x83,0x83,0x93,0xA3,0x92,0x81,
  83.         0x63,0x62,0xA3,0x93,0x83,0x96,0x04,0x04,
  84.         //最近我無法呼吸，連自己的影子也都想逃避
  85.         0xA4,0x94,0x82,0x82,0x82,0x52,0x82,0x92,0xA4,
  86.         //Ba By 你就是我的唯一
  87.         0x72,0x72,0x72,0x52,0x72,0x82,0x94,0x04,0xA2,0xA2,0xB2,0xA2,0x82,0x92,
  88.         //兩個世界都變心，回去談何容易
  89.         0x04,0xA4,0x94,0x82,0x82,0x82,0x52,0x82,0x92,0xA4,
  90.         //確定 你就是我的唯一
  91.         0x72,0x72,0x72,0x52,0x72,0x82,0x92,0xA2,0x84,0x64,0x03,0x51,0xB2,0xA2,0x82,
  92.         0x61,0x51,
  93.         //獨自對著電話說我愛你，我真的愛你
  94.         0x04,0xA4,0x94,0x82,0x82,0x82,0x82,0x72,0x82,0x52,0x32,0x68,
  95.         //BABY 我已不能多愛你一些
  96.         0x02,0xA4,0x94,0x82,0x82,0x82,0x82,0x72,0x82,0x54,0x42,0x66,0xff
  97.         //其實 早已超過了愛的極限
  98. };
  99. //————————————————同桌的你——————————————————//
  100. uchar code tzdn[]=
  101. {
  102.         0x52,0x52,0x52,0x52,0x32,0x42,0x56,0x86,0x62,0x62,0x62,0x62,0x42,0x62,0x56,
  103.         0x04,
  104.         //明天你是否會想起，昨天你寫的日記
  105.         0x52,0x52,0x52,0x52,0x72,0x62,0x52,0x44,0x02,0x42,0x42,0x42,0x42,0x33,0x21,
  106.         0x16,0x02,
  107.         //明天你是否還惦記，曾經最愛哭的你
  108.         0x82,0x82,0x82,0x82,0x52,0x32,0x86,0x82,0xA4,0x92,0x92,0x92,0x93,0x81,0x72,
  109.         0x66,0x02,
  110.         //誰娶了多愁善感的你，誰看了你的日記
  111.         0x72,0x72,0x72,0x72,0x72,0x82,0x96,0x54,0x02,0x72,0x72,0x82,0x92,0x82,0x72,
  112.         0x16,0x02,
  113.         //誰把你的長發盤起，誰給你做的嫁衣
  114.         0x84,0x82,0x82,0x52,0x62,0x86,0xA6,0x94,0x92,0x92,0x82,0x72,0x66,0x74,0x72,
  115.         0x72,0x72,0x82,0x96,0x56,
  116.         //啦……，啦……，啦……
  117.         0x72,0x72,0x82,0x92,0x82,0x72,0x86,0x94,0x92,0x92,0x62,0x72,0x96,0xB6,0x94,
  118.         0x92,0x92,0x82,0x72,0x66,
  119.         //啦……，啦……，啦……
  120.         0x72,0x72,0x72,0x72,0x72,0x82,0x96,0x56,0x72,0x72,0x82,0x92,0x82,0x72,0x96,
  121.         0x86,0xff
  122.         //啦……，啦……，啦……，啦……
  123. };
  124. //———————————————小小葫蘆娃—————————————————//
  125. uchar code hlw[]=
  126. {
  127.         0x12,0x12,0x35,0x11,0x12,0x31,0x02,
  128.         //葫蘆娃，葫蘆娃
  129.         0x62,0x62,0x61,0x51,0x62,0x51,0x12,0x31,0x02,
  130.         //一根藤上七朵花
  131.         0x81,0x61,0x61,0x51,0x65,0x51,0x12,0x21,0x02,
  132.         //風吹雨打都不怕
  133.         0x75,0x51,0x32,0x58,
  134.         //啦啦啦啦
  135.         0x81,0x01,0x61,0x61,0x51,0x51,0x62,0x61,0x01,
  136.         //叮當當冬冬當當
  137.         0x52,0x11,0x32,0x02,0x81,0x01,0x61,0x61,0x51,0x51,0x61,0x61,0x01,0x51,0x11,
  138.         0x22,0x02,
  139.         //葫蘆娃，叮當當冬冬當當，七朵花
  140.         0x35,0x11,0x62,0x18,
  141.         //啦啦啦啦
  142.         0x31,0x52,0x61,0x31,0x52,0x61,
  143.         //葫蘆娃，葫蘆娃
  144.         0x85,0x01,0x71,0x52,0x65,0x02,0xff
  145.         //七朵花
  146. };
  147. //————————————————千年之戀        ————————————————//
  148. uchar code qnzl[]=
  149. {         
  150.         0x32,0x31,0x21,0x32,0x52,0x32,0x31,0x21,0x32,0x62,
  151.         //竹林的燈火 到過的沙漠
  152.          0x32,0x31,0x21,0x32,0x82,0x71,0x81,0x71,0x51,0x32,0x22,
  153.         //七色的國度 不斷飄逸風中
  154.          0x32,0x31,0x21,0x32,0x52,0x32,0x31,0x21,0x32,0x62,
  155.         //有一種神秘 灰色的旋渦
  156.          0x32,0x31,0x21,0x32,0x83,0x82,0x71,0x72,0x02,
  157.         //將我卷入了迷霧中
  158.          0x63,0xA1,0xA2,0x62,0x92,0x82,0x52,
  159.         //看不清的雙手
  160.          0x31,0x51,0x63,0x51,0x63,0x51,0x63,0x51,0x62,0x82,0x7C,0x02,
  161.         //一朵花傳來誰經過的溫柔
  162.          0x61,0x71,0x82,0x71,0x62,0xA2,0x71,0x76,
  163.         //穿越千年的傷痛
  164.          0x61,0x71,0x82,0x71,0x62,0x52,0x31,0x36,
  165.         //只為求一個結果
  166.          0x61,0x71,0x82,0x71,0x62,0xA3,0x73,0x62,0x53,
  167.         //你留下的輪廓 指引我
  168.          0x42,0x63,0x83,0x83,0x91,0x91,
  169.         //黑夜中不寂寞
  170.          0x61,0x71,0x82,0x71,0x62,0x0A2,0x71,0x76,
  171.         //穿越千年的哀愁
  172.          0x61,0x71,0x82,0x71,0x62,0x52,0x31,0x36,
  173.         //是你在盡頭等我
  174.          0x61,0x71,0x82,0x71,0x62,0xA3,0x73,0x62,0x53,
  175.         //最美麗的感動 會值得
  176.          0x42,0x82,0x88,0x02,0x74,0x93,0x89,0xff//結束標志
  177.         //用一生守候
  178. };

  180. //簡譜音調對應的定時器初值，適合11.0592M的晶振
  181. uchar code cuzhi[]={256,293,329,349,392,440,494,523,586,658,697,783,879,987};
  182. void delay(uint z)        //延時165MS,即十六分音符
  183. {        
  184.         uint x,y;
  185.         for(x=z;x>0;x--)
  186.                  for(y=13333;y>0;y--);
  187. }         
  188. void delay1(uint z)        //延時1MS
  189. {        
  190.         uint x,y;
  191.         for(x=z;x>0;x--)
  192.                  for(y=120;y>0;y--);
  193. }
  194. void timer0() interrupt 1         //定時器0，用于產生各種音調
  195. {
  196.         TH0=timeh;
  197.         TL0=timel;
  198.         speaker=~speaker;
  199. }
  200. void song()         //播放歌曲函數
  201. {
  202.         uint temp;
  203.         uchar jp;//jp是簡譜   
  204.         i=0;
  205.         temp=tzdn[i];        //同桌的你        
  206.         jp=temp/16; //取數的高4位
  207.                 if(jp!=0)
  208.                 {
  209.                 timeh=(65536-1/cuzhi[jp])/256;
  210.                 timel=(65536-1/cuzhi[jp])%256;
  211.                 }
  212.                 else
  213.                 {
  214.                 TR0=0;
  215.                 speaker=1;//關揚聲器
  216.                 }
  217.                 delay(temp%16); //取數的低4位
  218.                 TR0=0;         //唱完一個音停10MS
  219.                 speaker=1;
  220.                 delay1(10);
  221.                 TR0=1;
  222.                 i++;
  223. }

  225. void main()
  226. {        
  227.         count=0;//不唱歌
  228.         TMOD=0x11;//定時器工作方式
  229.         TH0=0;
  230.         TL0=0; //定時器0賦初值
  231.         ET0=1;        //定時器0溢出中斷使能
  232.         TR1 = 1; //開始計時
  233.         ET1 = 1;  //定時器1溢出中斷使能
  234.         while(1)
  235.         {
  236.                 song();        
  237.                 delay1(1000);
  238.         }                                 
  239. }
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沙發
ID:413605 發表于 2018-11-4 23:19 | 只看該作者
看你是有源的，還是無源的，有源的只需要提供電壓就能發聲，無源的除了提供電壓外還要一定頻率的脈沖才行。
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板凳
ID:164602 發表于 2018-11-5 08:08 | 只看該作者
你知道蜂鳴器發聲音需要多少電流嗎？你知道單片機IO口的電流有多大嗎？中學物理(怕你大學不學物理，所以只說中學物理)上講過的功率你還記得嗎？呵呵
給你一個電路看看，想想吧。單片機不僅僅只玩程序，還要玩硬件的，沒有基本知識，沒法玩哦。


三極管在這里就是為了放大電流，讓蜂鳴器工作的。
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地板
ID:319023 發表于 2018-11-5 09:47 | 只看該作者
是要看硬件的，軟硬件聯調才行。
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