簡易單片機Mp3程序蜂鳴器播放敢問路在何方（新手入門級）

ID:964116 · 發表于 2021-9-8 19:55

包含Proteus仿真和源碼

單片機源程序如下:

#include <reg52.h>
sbit beep = P2^3;
unsigned char timer0H, timer0L, time;
//單片機晶振采用11.0592MHz
code unsigned char FREQH[] = {
0xF2, 0xF3, 0xF5, 0xF5, 0xF6, 0xF7, 0xF8, //低音1234567
0xF9, 0xF9, 0xFA, 0xFA, 0xFB, 0xFB, 0xFC, 0xFC,//1,2,3,4,5,6,7,i
0xFC, 0xFD, 0xFD, 0xFD, 0xFD, 0xFE, //高音 234567
0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFE, 0xFF}; //超高音 1234567
code unsigned char FREQL[] =
{
0x42, 0xC1, 0x17, 0xB6, 0xD0, 0xD1, 0xB6, //低音1234567
0x21, 0xE1, 0x8C, 0xD8, 0x68, 0xE9, 0x5B, 0x8F, //1,2,3,4,5,6,7,i
0xEE, 0x44, 0x6B, 0xB4, 0xF4, 0x2D, //高音 234567
0x47, 0x77, 0xA2, 0xB6, 0xDA, 0xFA, 0x16 //超高音 1234567
};
code unsigned char song[] =
{
6, 1, 2, 1, 2, 4, 6, 1, 2, 3, 2, 4, 2, 2, 2, 2, 2, 2, 3, 2, 1, 2, 2, 1, 1, 1, 6, //你挑著擔
7, 1, 2, 6, 1, 4, 7, 1, 2, 2, 2, 4, 3, 2, 2, 1, 2, 2, //我牽著馬
6, 1, 4, 6, 1, 6, 3, 2, 6, 6, 2, 5, 3, 2, 2, 6, 2, 5,
5, 2, 2, 4, 2, 2, 3, 2, 6, 1, 2, 5, 2, 2, 2, 3, 2, 6,
4, 2, 2, 3, 2, 2, 2, 2, 10, //迎來日出，送走晚霞
6, 1, 4, 3, 2, 4, 2, 2, 2, 3, 2, 2, 6, 1, 4, 1, 2, 8,
3, 2, 4, 2, 2, 2, 7, 1, 4, 3, 2, 2, 2, 2, 2, 6, 1, 2, 1, 2, 2, 2, 2, 2, 3, 2, 10, //踏平坎坷成大道
3, 2, 6, 6, 2, 4, 3, 2, 2, 6, 2, 4, 5, 2, 2, 4, 2, 2, 3, 2, 6, 5, 2, 2, 2, 2, 4,
4, 2, 2, 3, 2, 2, 2, 2, 2, 1, 2, 4, 2, 2, 8, 3, 2, 4, //斗罷艱險又出發
2, 2, 2, 7, 1, 4, 3, 2, 2, 7, 1, 2, 6, 1, 2, 5, 1, 4, 6, 1, 8,
3, 2, 4, 5, 2, 8, 3, 2, 2, 5, 2, 2, 6, 2, 5,
1, 3, 2, 7, 2, 2, 6, 2, 2, 5, 2, 4, 6, 2, 10, //啦啦啦啦啦啦啦啦
1, 3, 6, 7, 2, 5, 6, 2, 2, 6, 2, 4, 5, 2, 6, 5, 2, 2, 6, 2, 2, 3, 2, 10, //一番番春秋冬夏
1, 3, 6, 7, 2, 5, 6, 2, 2, 6, 2, 4, 5, 2, 6, 6, 2, 2, 3, 2, 10, //一番番酸甜苦辣
6, 1, 5, 1, 2, 2, 3, 2, 5, 1, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 8, //敢問路在何方
2, 2, 2, 7, 3, 4, 2, 2, 2, 7, 1, 2, 6, 1, 2, 5, 1, 4, 6, 1, 10, //路在腳下
6, 1, 5, 1, 2, 2, 3, 2, 5, 1, 2, 2, 2, 2, 2, 3, 2, 2, 2, 2, 8, //敢問路在何方
3, 2, 4, 5, 2, 6, 3, 2, 4, 7, 2, 5,
1, 3, 2, 7, 2, 2, 6, 2, 2, 5, 2, 4, 6, 2, 10, 6, 2, 10, 0, 0, 0 //路在腳下
};
void t0int() interrupt 1 //T0中斷程序，控制發音的音調
{
TR0 = 0; //先關閉T0
beep = !beep; //輸出方波, 發音
TH0 = timer0H; //下次的中斷時間, 這個時間, 控制音調高低
TL0 = timer0L;
TR0 = 1; //啟動T0
}
void delay(unsigned char t) //延時程序，控制發音的時間長度
{
unsigned char t1;
unsigned long t2;
for(t1 = 0; t1 < t; t1++) //雙重循環, 共延時t個半拍
for(t2 = 0; t2 < 4000; t2++); //延時期間, 可進入T0中斷去發音
TR0 = 0; //關閉T0, 停止發音
}
void sing() //演奏一個音符
{
TH0 = timer0H; //控制音調
TL0 = timer0L;
TR0 = 1; //啟動T0, 由T0輸出方波去發音
delay(time); //控制時間長度
}
void main(void)
{
unsigned char k, i;
TMOD = 1; //置T0定時工作方式1
ET0 = 1; //開T0中斷
EA = 1; //開總中斷
while(1)
{
i = 0;
time = 1;
while(time)
{
k = song[i] + 7 * song[i + 1] - 1;//第i個是音符, 第i+1個是第幾個八度
timer0H = FREQH[k]; //從數據表中讀出頻率數值
timer0L = FREQL[k]; //實際上, 是定時的時間長度
time = song[i + 2]; //讀出時間長度數值
i += 3;
sing(); //發出一個音符
}
}
}