C51 COMPILER V8.02 单____乐 06/19/2010 14:29:57 PAGE 1 C51 COMPILER V8.02, COMPILATION OF MODULE 单____乐 OBJECT MODULE PLACED IN 单音音乐.OBJ COMPILER INVOKED BY: D:\处理软件\keil\C51\BIN\C51.EXE 单音音乐.c BROWSE DEBUG OBJECTEXTEND line level source 1 #include 2 #define uchar unsigned char 3 bit flag; //标志音乐输出脚电平的高低 4 uchar ptr = 0x00; //取音符 5 uchar high; //计数器高位 6 uchar low; //计数器低位 7 // 本曲谱为 "新年好",前两个十六进制表示发声频率,后一个表示发声时间,0xFF,0xFF 表示休止符 8 // 0x00 表示结束 9 // 1 _ 1_ 1 .5 10 uchar code music[] = { 11 0xFC,0x44,0x7F, 0xFC,0x44,0x7F, 0xFC,0x44,0xFF, 0xFA,0x68,0xFF, 12 // 3 _ 3_ 3 1 13 0xFD,0x23,0x7F, 0xFD,0x23,0x7F, 0xFD,0x23,0xFF, 0xFC,0x44,0xFF, 14 // 1_ 3_ 5 5 15 0xFC,0x44,0x7F, 0xFD,0x23,0x7F, 0xFD,0x82,0xFF, 0xFD,0x82,0xFF, 16 // 4_ 3_ 2 - 17 0xFD,0x23,0x7F, 0xFD,0x23,0x7F, 0xFC,0xAC,0xFF, 0xFF,0xFF,0xFF, 18 // 2_ 3_ 4 4 19 0xFC,0xAC,0x7F, 0xFD,0x23,0x7F, 0xFD,0x34,0xFF, 0xFD,0x34,0xFF, 20 // 3_ 2_ 3 1 21 0xFD,0x23,0x7F, 0xFC,0xAC,0x7F, 0xFD,0x23,0xFF, 0xFC,0x44,0xFF, 22 // 1_ 3_ 2 .5 23 0xFC,0x44,0x7F, 0xFD,0x23,0x7F, 0xFC,0xAC,0xFF, 0xFA,0x68,0xFF, 24 // .7_ 2_ 1 - 25 0xFC,0x0C,0x7F, 0xFC,0xAC,0x7F, 0xFC,0x44,0xFF, 0xFF,0xFF,0xFF, 26 0x00//结束 27 28 29 30 }; 31 void Init(void); //初始化函数 32 void DelayMs(unsigned int time); //毫秒级延时函数 33 main() 34 { 35 1 uchar time; 36 1 Init(); 37 1 TH0 = high; 38 1 TL0 = low; 39 1 while (1) 40 1 { 41 2 if (music[ptr] != 0xFF && music[ptr] != 0x00)//判断是否是正常音符 42 2 { 43 3 TR0 = 0; 44 3 P2_3 = 1; 45 3 DelayMs(10); //间歇 46 3 TR0 = 1; 47 3 high = music[ptr]; //取设置频率数值的高8 位 48 3 low = music[ptr + 1]; //取设置频率数值的低8 位 49 3 time = music[ptr + 2]; //取发声时间 50 3 DelayMs(time); 51 3 ptr += 3; 52 3 } 53 2 else if (music[ptr] == 0xFF) //判断是否是休止符 54 2 { 55 3 time = music[ptr + 2]; C51 COMPILER V8.02 单____乐 06/19/2010 14:29:57 PAGE 2 56 3 DelayMs(time); 57 3 ptr += 3; 58 3 } 59 2 60 2 else //结束符,停止2 秒后继续 61 2 { 62 3 TR0 = 0; 63 3 P2_3 = 1; 64 3 DelayMs(2000); 65 3 ptr = 0; 66 3 } 67 2 } 68 1 } 69 /********************************************************************************* 70 * 名称：Count1(void) interrupt 1 71 * 功能：设置计时器0 溢出中断,每中断一次改变P2_3 引脚电平 72 *********************************************************************************/ 73 void Count1(void) interrupt 1 74 { 75 1 TH0 = high; 76 1 TL0 = low; 77 1 if (flag == 0) //改变P2_3 引脚电平 78 1 { 79 2 P2_3 = 0; 80 2 flag = 1; 81 2 } 82 1 else 83 1 { 84 2 P2_3 = 1; 85 2 flag = 0; 86 2 } 87 1 } 88 /********************************************************************************* 89 * 名称：Init() 90 * 功能：设置计数器0 工作方式,16 位计数,溢出中断方式 91 **********************************************************************************/ 92 void Init() 93 { 94 1 TMOD = 0x01; //定时器0 处于计时方式,16 位 95 1 EA = 1; 96 1 ET0 = 1; //定时器0 溢出中断 97 1 } 98 /********************************************************************************* 99 * 名称：DelayMs(unsigned int time) 100 * 功能：延时time * 1ms 时间 101 *********************************************************************************/ 102 void DelayMs(unsigned int time) 103 { 104 1 unsigned int i; 105 1 unsigned int j; 106 1 for (j =0; j < time; j++) //每个循环 约 3ms 107 1 { 108 2 for (i =0; i < 363; i++) 109 2 {;} 110 2 } 111 1 } 112 113 114 115 116 117 C51 COMPILER V8.02 单____乐 06/19/2010 14:29:57 PAGE 3 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 MODULE INFORMATION: STATIC OVERLAYABLE CODE SIZE = 160 ---- CONSTANT SIZE = 97 ---- XDATA SIZE = ---- ---- PDATA SIZE = ---- ---- DATA SIZE = 3 1 IDATA SIZE = ---- ---- BIT SIZE = 1 ---- END OF MODULE INFORMATION. C51 COMPILATION COMPLETE. 0 WARNING(S), 0 ERROR(S)