- #include <reg52.h>
- #define uchar unsigned char
- sbit beep=P0^4; //定义蜂鸣器输出端口
- uchar timer0h,timer0l,time;
- //世上只有妈妈好 数据表
- code uchar sszymmh[]={6,2,3,5,2,1,3,2,2,5,2,2,1,3,2,6,2,1,5,2,1,
- 6,2,4,3,2,2,5,2,1,6,2,1,5,2,2,3,2,2,1,2,1,
- 6,1,1,5,2,1,3,2,1,2,2,4,2,2,3,3,2,1,5,2,2,
- 5,2,1,6,2,1,3,2,2,2,2,2,1,2,4,5,2,3,3,2,1,
- 2,2,1,1,2,1,6,1,1,1,2,1,5,1,6,0,0,0
- };
- // 音阶频率表 高八位
- code uchar FREQH[]={0xF2,0xF3,0xF5,0xF5,0xF6,0xF7,0xF8,
- 0xF9,0xF9,0xFA,0xFA,0xFB,0xFB,0xFC,0xFC, //1,2,3,4,5,6,7,8,i
- 0xFC,0xFD,0xFD,0xFD,0xFD,0xFE,
- 0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFF,} ;
- ~ 1 / 3 ~
- // 音阶频率表 低八位
- code uchar FREQL[]={0x42,0xC1,0x17,0xB6,0xD0,0xD1,0xB6,
- 0x21,0xE1,0x8C,0xD8,0x68,0xE9,0x5B,0x8F, //1,2,3,4,5,6,7,8,i
- 0xEE,0x44, 0x6B,0xB4,0xF4,0x2D,
- 0x47,0x77,0xA2,0xB6,0xDA,0xFA,0x16,};
- void delay(uchar t) // 延时函数
- {
- uchar t1;
- unsigned long t2;
- for(t1=0;t1<t;t1++)
- {
- for(t2=0;t2<8000;t2++);
- }
- TR0=0;
- }
- void song() // 音乐处理函数
- {
- TH0=timer0h;
- TL0=timer0l;
- TR0=1;
- delay(time);
- }
- /******************************************************************
- 主函数
- ******************************************************************/
- void main(void)
- {
- uchar k,i;
- TMOD=1; //置CT0定时工作方式1
- EA=1;
- ET0=1; //IE=0x82 //CPU开中断,CT0开中断
- while(1)
- {
- i=0;
- while(i<100) //音乐数组长度 ，唱完从头再来
- ~ 2 / 3 ~
- {
- k=sszymmh[i]+7*sszymmh[i+1]-1;
- timer0h=FREQH[k];
- timer0l=FREQL[k];
- time=sszymmh[i+2];
- i=i+3;
- song();
- }
- }
- }
- void t0int() interrupt 1 //定时器中断函数
- {
- TR0=0;
- beep=!beep;
- TH0=timer0h;
- TL0=timer0l;
- TR0=1;
- }
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