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
- }
- }
- }
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