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»论坛 › 嵌入式/单片机论坛 › 24小时必答区 › 求助大神，这个单片机驱动蜂鸣器唱歌程序为什么不能发声 ...
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求助大神，这个单片机驱动蜂鸣器唱歌程序为什么不能发声音?

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ID:420587 发表于 2018-11-4 18:23 | 显示全部楼层 |阅读模式
VL1W2HKIAL4(_VQHBVL6UEC.png


  1. #include <reg52.h>
  2. #define uchar unsigned char
  3. #define uint  unsigned int
  4. sbit key1=P3^2;//按key1可切换下一曲
  5. sbit key2=P3^3;//按key2可切换上一曲
  6. sbit speaker=P3^7;//扬声器输出口

  8. char count;//歌曲标志        
  9. uchar timeh,timel,i,k=0,counter=0;//用到的各个变量
  10. uchar code  graph[] =  //8*8点阵动态图数据
  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.         //白色油桐风中纷飞
  27.         0x51,0x52,0x31,0x52,0x62,0x13,0x11,0x13,0x32,0x28,0x08,0x28,
  28.         //落花似人有情 这个季节
  29.         0x31,0x32,0x31,0x32,0x11,0x21,0x51,0x52,0x51,0x52,
  30.         //河畔的风放肆拼命地吹
  31.         0x51,0x51,0x31,0x32,0x31,0x32,0x81,0x72,0x63,
  32.         //不断拨弄离人的眼泪
  33.         0x62,0x71,0x81,0x72,0x61,0x61,0x52,0x31,0x21,0x32,0x51,0x54,
  34.         //那样浓烈的爱再也无法给
  35.         0x22,0x12,0x11,0x12,0x11,0x12,0x12,0x14,0x26,0x32,0x26,
  36.         //伤感一夜一夜
  37.         0x32,0x61,0x51,0x51,0x31,0x31,0x21,0x31,0x51,0x61,0x51,0x31,0x51,
  38.         //当记忆的线缠绕过往支离破碎
  39.         0x02,0x32,0x81,0x81,0x81,0x81,0x62,0x52,0x34,
  40.         //是慌乱占据了心扉                                                                                                                                 
  41.         0x31,0x81,0x81,0x81,0x61,0x91,0x82,
  42.         //有花儿伴着蝴蝶
  43.         0x51,0x51,0x51,0x51,0x31,0x61,0x53,
  44.         //孤雁可以双飞        
  45.         0x21,0x11,0x21,0x11,0x22,0x11,0x21,0x26,
  46.         //夜深人静独徘徊
  47.         0x32,0x61,0x51,0x51,0x31,0x31,0x21,0x31,0x51,0x61,0x51,0x31,0x51,0x52,
  48.         //当幸福恋人寄来红色分享喜悦
  49.         0x31,0x31,0x81,0x81,0x81,0x61,0x91,0x81,0x61,0x31,0x56,
  50.         //闭上双眼难过头也不敢回
  51.         0x32,0x32,0x81,0x81,0x81,0x81,0x91,0x81,0x61,0x81,0x61,0x51,0x31,0x51,0x34,
  52.         //仍然捡尽寒枝不肯安歇微带着后悔
  53.         0x21,0x31,0x51,0x31,0x21,0x11,0x61,0x21,0x16,0xff
  54.         //寂寞沙洲我该思念谁
  55. };
  56. //—————————————————劳动最光荣———————————————————//
  57. uchar code ldzgr[]=
  58. {
  59.         0x52,0x82,0x82,0x52,0x62,0x62,0x54,0x32,0x52,0x12,0x32,0x28,
  60.         //太阳光，金亮亮，雄鸡唱三唱；
  61.         0x52,0x84,0x52,0x62,0x62,0x54,0x52,0x81,0xA1,0x92,0x52,0x88,
  62.         //花儿 醒来了，鸟儿忙梳妆
  63.         0x83,0x91,0x82,0x52,0x62,0x62,0x54,0x33,0x81,0x62,0x52,0x12,0x32,0x24,
  64.         //小喜鹊 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.         //幸福的生活从哪里来？要靠劳动来创造
  68.         0x52,0x81,0x81,0x82,0x52,0x62,0x61,0x81,0x54,0x32,0x51,0x61,0x53,0x31,0x12,
  69.         0x32,0x24,
  70.         //青青的叶儿 红红的花，小蝴蝶 贪玩耍
  71.         0x52,0x82,0x82,0x52,0x62,0x62,0x54,0x51,0x61,0x81,0xA1,0x92,0x52,0x88,
  72.         //不爱劳动 不学习，我们大家不学它
  73.         0x83,0x91,0x82,0x52,0x62,0x62,0x54,0x33,0x81,0x62,0x52,0x12,0x32,0x24,
  74.         //要学喜鹊 造新房，要学蜜蜂 采蜜糖
  75.         0x12,0x11,0x21,0x32,0x52,0x82,0x52,0x68,0x52,0x61,0x61,0x84,0xA4,0x92,0x52,
  76.         0x84,0xff//歌曲结束符号
  77.         //劳动的快乐 说不尽，劳动的创造 最光荣
  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.         //最近我无法呼吸，连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.         //两个世界都变心，回去谈何容易
  89.         0x04,0xA4,0x94,0x82,0x82,0x82,0x52,0x82,0x92,0xA4,
  90.         //确定 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.         //独自对着电话说我爱你，我真的爱你
  94.         0x04,0xA4,0x94,0x82,0x82,0x82,0x82,0x72,0x82,0x52,0x32,0x68,
  95.         //BABY 我已不能多爱你一些
  96.         0x02,0xA4,0x94,0x82,0x82,0x82,0x82,0x72,0x82,0x54,0x42,0x66,0xff
  97.         //其实 早已超过了爱的极限
  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.         //明天你是否会想起，昨天你写的日记
  105.         0x52,0x52,0x52,0x52,0x72,0x62,0x52,0x44,0x02,0x42,0x42,0x42,0x42,0x33,0x21,
  106.         0x16,0x02,
  107.         //明天你是否还惦记，曾经最爱哭的你
  108.         0x82,0x82,0x82,0x82,0x52,0x32,0x86,0x82,0xA4,0x92,0x92,0x92,0x93,0x81,0x72,
  109.         0x66,0x02,
  110.         //谁娶了多愁善感的你，谁看了你的日记
  111.         0x72,0x72,0x72,0x72,0x72,0x82,0x96,0x54,0x02,0x72,0x72,0x82,0x92,0x82,0x72,
  112.         0x16,0x02,
  113.         //谁把你的长发盘起，谁给你做的嫁衣
  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. //———————————————小小葫芦娃—————————————————//
  125. uchar code hlw[]=
  126. {
  127.         0x12,0x12,0x35,0x11,0x12,0x31,0x02,
  128.         //葫芦娃，葫芦娃
  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.         //风吹雨打都不怕
  133.         0x75,0x51,0x32,0x58,
  134.         //啦啦啦啦
  135.         0x81,0x01,0x61,0x61,0x51,0x51,0x62,0x61,0x01,
  136.         //叮当当冬冬当当
  137.         0x52,0x11,0x32,0x02,0x81,0x01,0x61,0x61,0x51,0x51,0x61,0x61,0x01,0x51,0x11,
  138.         0x22,0x02,
  139.         //葫芦娃，叮当当冬冬当当，七朵花
  140.         0x35,0x11,0x62,0x18,
  141.         //啦啦啦啦
  142.         0x31,0x52,0x61,0x31,0x52,0x61,
  143.         //葫芦娃，葫芦娃
  144.         0x85,0x01,0x71,0x52,0x65,0x02,0xff
  145.         //七朵花
  146. };
  147. //————————————————千年之恋        ————————————————//
  148. uchar code qnzl[]=
  149. {         
  150.         0x32,0x31,0x21,0x32,0x52,0x32,0x31,0x21,0x32,0x62,
  151.         //竹林的灯火 到过的沙漠
  152.          0x32,0x31,0x21,0x32,0x82,0x71,0x81,0x71,0x51,0x32,0x22,
  153.         //七色的国度 不断飘逸风中
  154.          0x32,0x31,0x21,0x32,0x52,0x32,0x31,0x21,0x32,0x62,
  155.         //有一种神秘 灰色的旋涡
  156.          0x32,0x31,0x21,0x32,0x83,0x82,0x71,0x72,0x02,
  157.         //将我卷入了迷雾中
  158.          0x63,0xA1,0xA2,0x62,0x92,0x82,0x52,
  159.         //看不清的双手
  160.          0x31,0x51,0x63,0x51,0x63,0x51,0x63,0x51,0x62,0x82,0x7C,0x02,
  161.         //一朵花传来谁经过的温柔
  162.          0x61,0x71,0x82,0x71,0x62,0xA2,0x71,0x76,
  163.         //穿越千年的伤痛
  164.          0x61,0x71,0x82,0x71,0x62,0x52,0x31,0x36,
  165.         //只为求一个结果
  166.          0x61,0x71,0x82,0x71,0x62,0xA3,0x73,0x62,0x53,
  167.         //你留下的轮廓 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.         //是你在尽头等我
  174.          0x61,0x71,0x82,0x71,0x62,0xA3,0x73,0x62,0x53,
  175.         //最美丽的感动 会值得
  176.          0x42,0x82,0x88,0x02,0x74,0x93,0x89,0xff//结束标志
  177.         //用一生守候
  178. };

  180. //简谱音调对应的定时器初值，适合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)        //延时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)        //延时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         //定时器0，用于产生各种音调
  195. {
  196.         TH0=timeh;
  197.         TL0=timel;
  198.         speaker=~speaker;
  199. }
  200. void song()         //播放歌曲函数
  201. {
  202.         uint temp;
  203.         uchar jp;//jp是简谱   
  204.         i=0;
  205.         temp=tzdn[i];        //同桌的你        
  206.         jp=temp/16; //取数的高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;//关扬声器
  216.                 }
  217.                 delay(temp%16); //取数的低4位
  218.                 TR0=0;         //唱完一个音停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;//定时器工作方式
  229.         TH0=0;
  230.         TL0=0; //定时器0赋初值
  231.         ET0=1;        //定时器0溢出中断使能
  232.         TR1 = 1; //开始计时
  233.         ET1 = 1;  //定时器1溢出中断使能
  234.         while(1)
  235.         {
  236.                 song();        
  237.                 delay1(1000);
  238.         }                                 
  239. }
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ID:413605 发表于 2018-11-4 23:19 | 显示全部楼层
看你是有源的，还是无源的，有源的只需要提供电压就能发声，无源的除了提供电压外还要一定频率的脉冲才行。
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ID:164602 发表于 2018-11-5 08:08 | 显示全部楼层
你知道蜂鸣器发声音需要多少电流吗？你知道单片机IO口的电流有多大吗？中学物理(怕你大学不学物理，所以只说中学物理)上讲过的功率你还记得吗？呵呵
给你一个电路看看，想想吧。单片机不仅仅只玩程序，还要玩硬件的，没有基本知识，没法玩哦。
1.jpg

三极管在这里就是为了放大电流，让蜂鸣器工作的。
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ID:319023 发表于 2018-11-5 09:47 | 显示全部楼层
是要看硬件的，软硬件联调才行。
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