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標(biāo)題: 單片機(jī)生日快樂音符表和節(jié)拍表怎么寫？要數(shù)字生成的，跪求！ [打印本頁(yè)]

作者: manan 時(shí)間: 2020-5-27 21:38
標(biāo)題: 單片機(jī)生日快樂音符表和節(jié)拍表怎么寫？要數(shù)字生成的，跪求！
#include <reg52.h>
sbit BUZZ = P1^6; //蜂鳴器控制引腳

unsigned int code NoteFrequ[] = { //中音 1-7 和高音 1-7 對(duì)應(yīng)頻率列表
      523, 587, 659, 698, 784, 880, 988, //中音 1-7
      1047, 1175, 1319, 1397, 1568, 1760, 1976 //高音 1-7
};

unsigned int code NoteReload[] = { //中音 1-7 和高音 1-7 對(duì)應(yīng)的定時(shí)器重載值
      65536 - (11059200/12) / (523*2), //中音 1
      65536 - (11059200/12) / (587*2), //2
      65536 - (11059200/12) / (659*2), //3
      65536 - (11059200/12) / (698*2), //4
      65536 - (11059200/12) / (784*2), //5
      65536 - (11059200/12) / (880*2), //6
      65536 - (11059200/12) / (988*2), //7
      65536 - (11059200/12) / (1047*2), //高音 1
      65536 - (11059200/12) / (1175*2), //2
      65536 - (11059200/12) / (1319*2), //3
      65536 - (11059200/12) / (1397*2), //4
      65536 - (11059200/12) / (1568*2), //5
      65536 - (11059200/12) / (1760*2), //6
      65536 - (11059200/12) / (1976*2), //7
};

bit enable = 1; //蜂鳴器發(fā)聲使能標(biāo)志

bit tmrflag = 0; //定時(shí)器中斷完成標(biāo)志
unsigned char T0RH = 0xFF; //T0 重載值的高字節(jié)
unsigned char T0RL = 0x00; //T0 重載值的低字節(jié)
void PlayTwoTiger();
void main()
{
      unsigned int i;
      EA = 1; //使能全局中斷
      TMOD = 0x01; //配置 T0 工作在模式 1
      TH0 = T0RH;
      TL0 = T0RL;
      ET0 = 1; //使能 T0 中斷
      TR0 = 1; //啟動(dòng) T0
      while (1)
      {
      PlayTwoTiger(); //播放樂曲--兩支老虎
      for (i=0; i<40000; i++); //停止一段時(shí)間
      }
}
/* 兩只老虎樂曲播放函數(shù) */
void PlayTwoTiger()
{
      unsigned char beat; //當(dāng)前節(jié)拍索引
      unsigned char note; //當(dāng)前節(jié)拍對(duì)應(yīng)的音符
      unsigned int time = 0; //當(dāng)前節(jié)拍計(jì)時(shí)
      unsigned int beatTime = 0; //當(dāng)前節(jié)拍總時(shí)間
      unsigned int soundTime = 0; //當(dāng)前節(jié)拍需發(fā)聲時(shí)間

unsigned char code TwoTigerNote[] = {
// 生日快樂音符表數(shù)字
      };
/節(jié)拍表，4 表示一拍，1 就是 1/4 拍，8 就是 2 拍
unsigned char code TwoTigerBeat[] = {
   生日快樂節(jié)拍表
      };
      for (beat=0; beat<sizeof(TwoTigerNote); ) //用節(jié)拍索引作為循環(huán)變量
{

while (!tmrflag); //每次定時(shí)器中斷完成后，檢測(cè)并處理節(jié)拍
tmrflag = 0;
if (time == 0) //當(dāng)前節(jié)拍播完則啟動(dòng)一個(gè)新節(jié)拍
{
      note = TwoTigerNote[beat] - 1;
      T0RH = NoteReload[note] >> 8;
      T0RL = NoteReload[note];
      //計(jì)算節(jié)拍總時(shí)間，右移 2 位相當(dāng)于除 4，移位代替除法可以加快執(zhí)行速度
      beatTime = (TwoTigerBeat[beat] * NoteFrequ[note]) >> 2;
      //計(jì)算發(fā)聲時(shí)間，為總時(shí)間的 0.75，移位原理同上
      soundTime = beatTime - (beatTime >> 2);
      enable = 1; //指示蜂鳴器開始發(fā)聲
      time++;
}
      else //當(dāng)前節(jié)拍未播完則處理當(dāng)前節(jié)拍
      {
            if (time >= beatTime) //當(dāng)前持續(xù)時(shí)間到達(dá)節(jié)拍總時(shí)間時(shí)歸零，
            { //并遞增節(jié)拍索引，以準(zhǔn)備啟動(dòng)新節(jié)拍
            time = 0;
            beat++;
            }
            else //當(dāng)前持續(xù)時(shí)間未達(dá)到總時(shí)間時(shí)，
            {
            time++; //累加時(shí)間計(jì)數(shù)
                     if (time == soundTime) //到達(dá)發(fā)聲時(shí)間后，指示關(guān)閉蜂鳴器，
                     { //插入 0.25*總時(shí)間的靜音間隔，
                     enable = 0; //用以區(qū)分連續(xù)的兩個(gè)節(jié)拍
                     }
            }
      }
}
}
/* T0 中斷服務(wù)函數(shù)，用于控制蜂鳴器發(fā)聲 */
void InterruptTimer0() interrupt 1
{
      TH0 = T0RH; //重新加載重載值
      TL0 = T0RL;
      tmrflag = 1;
      if (enable) //使能時(shí)反轉(zhuǎn)蜂鳴器控制電平
      BUZZ = ~BUZZ;
      else //未使能時(shí)關(guān)閉蜂鳴器
      BUZZ = 1;
}

作者: manan 時(shí)間: 2020-5-27 21:39
用的芯片是STC89c52的

作者: manan 時(shí)間: 2020-5-27 21:39
在線求生日快樂節(jié)拍表和音符表要數(shù)字組成的

作者: Hooligian 時(shí)間: 2021-1-15 18:20
1,0,1,2,1,4,3,0,
1,0,1,2,1,5,4,0,
1,0,1,8,6,4,3,2,0,
7,0,7,6,4,5,4,0 這是音符
24,1,24,48,48,48,72,5,
24,1,24,48,48,48,72,5,
24,1,24,48,48,48,48,72,5,
24,1,24,48,48,48,72,5這是節(jié)拍。

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