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1、单片机单片机 IOIO 口播放乐曲口播放乐曲日期：2006-2-27来源：文君阁 作者：xuwenjun字体：大 中 小 /标 题: 单片机 IO 口播放乐曲 /-/ 源程序大公开 / (c) Copyright 20012002 xuwenjun / All Rights Reserved / V1.00 /-/标 题: 单片机 IO 口播放乐曲 /版 本: V1.00 /文件名: xwj_lcd16.C /创建人: 徐文军 E-mail: /日 期: 02-11-5 /描 述: 单片机利用 T1 中断在 IO 口 P1.0 输出乐曲 /声 明: / 以下代码仅免费提供给学习用途，但引用或修
2、改后必须在文件中声明出处. / 如用于商业用途请与作者联系. E-mail: / 有问题请 mailto 欢迎与我交流! /-/修改人: 徐文军 E-mail: /日 期: 02-11-5 /说 明: / 单片机用 T1 中断在 IO 口 P1.0 输出乐曲(在 P1.0 口与 VCC 间接一喇叭即可听到) / 1.由于输出的是方波，比较难听:-)你也可以将波形细分用 DA 输出正弦波 / 2.由于 T1 频繁中断，任何其他中断发生都会是乐曲打顿，只适合试验 / 3.优化音符编码：一个字节中包含节拍、音符、升降调，可区分数据和命令/ 同时人工将音符译为机器码非常容易。(格式看下面实例)/-/
3、#include #include #define FREQ 11059200#define freq_chn(f) 255-f/24/147/256,256-f/24/147%256/ 音乐_编码 2 - 存储器定义 /unsigned char code music_tab1= /音符码格式:| D7 |D6 D5 D4| D3 |D2 D1 D0|/梁祝 |变调| 节拍|升降| 音符 |0xcb, /示例:0xcb=11001011B,即升调,4/16 拍,3Mi 低音0x35,0x16,0xb9,0x12,0x96,0x99,0xa5,0xbd,0x99,0x96,0x15,0x13,
4、0x15,0x62,0x32,0x13,0xa7,0x26,0x25,0x16,0xa9,0x22,0xa3,0xa9,0x96,0x15,0x16,0x99,0xe5,0xbb,0x15,0xa7,0xaa,0x96,0x99,0xd5,0x13,0x15,0x23,0x15,0x16,0x17,0x9a,0xd6,0x15,0x16,0xb9,0x12,0x25,0x23,0x23,0x22,0x13,0x12,0x21,0x96,0x15,0x43,0xc9,0x96,0x99,0x96,0x15,0x13,0x15,0x16,0x99,0xd5, /功能码格式:| D7 D6 D5 D
5、4 | D3 D2 D1 D0|/ |高 4 位=0 时是功能码|根据低 4 位散转 |0x00, /最后字节为功能码必须=0x00 退出;unsigned char code music_tab2= /康定情歌0x23,0x25,0x26,0x16,0x15, 0x36,0x13,0x42,0x23,0x25,0x26,0x16,0x15, 0x26,0x53,0x23,0x25,0x26,0x16,0x15, 0x26,0x23,0x42,0x25,0x23,0x12,0x13,0x12,0x11, 0x22,0xd6,0x26,0xda, 0x25,0x53, 0x12,0x11,0xd
6、6,0xad,0x23,0x12,0x13,0x12,0x11, 0x22,0xd6,0x00,;unsigned char code music_tab3= /美酒加咖啡0x55,0x23,0x25,0x26,0xa9,0x22, 0x73,0x45,0x25,0x26,0x23,0x22,0x21,0x23, 0x72,0x52,0x23,0x45,0x43, 0x22,0x21,0xa6,0x25,0x66,0xc9,0xa6,0x25,0x23,0x25,0x26,0xa9, 0xf5,0x45,0x23,0x25,0x46,0xc9, 0x22,0x13,0x12,0x21,0x22
7、,0x63,0x22,0x23,0x25,0x26,0x25,0x23,0x22,0x21, 0x72,0x52,0x23,0x45,0x43, 0x22,0x21,0xa6,0x25,0x66,0xb9,0x12,0x23,0x25,0x22,0xa5,0xab,0x22, 0x71,0x00,;unsigned char code music_tab4= /北国之春0x15,0x16,0x75, 0x15,0x16,0x55,0x13,0x15,0x16,0x15,0x16,0x99,0x12,0x13,0x65,0x45,0x13,0x12,0x11,0x12, 0x73,0x62,0x
8、42,0x12,0x11,0x96,0x15, 0x76,0x55,0x23,0x45,0xa9,0x22, 0x53,0x12,0x13,0x65,0x52,0x22,0x42,0x21,0xa6, 0xe9,0x91,0x12,0x13,0x12,0x13,0x15,0x99,0x12,/以上为过门0x20,0x23,0x23,0x23,0x63, 0x22,0x23,0x23,0x22,0x41,0xa6,0x25,0x53,0x22,0x21,0xa9,0x21,0xa6, 0x75,0x26,0xa9,0x21,0xa6,0xc9,0x12,0x11,0x96,0x15,0x23,0
9、x25,0x25,0x26,0x45,0x21,0x22,0x13,0x35,0x25,0xa9,0xa6,0x25,0x23,0x22, 0x71,0x52,0x25,0x45,0x13,0x15,0x13,0x12, 0x21,0x41,0x22,0x43,0x45,0x23,0x25,0x26,0xa9,0x42,0x12,0x33, 0x72,0x51,0x22,0x43,0x22,0x21, 0xc6,0xc9,0x29,0xc6,0x45,0x23,0x23,0x53,0x25,0x26,0x25,0x13,0x12,0x21, 0x62,0x42,0x23,0x25,0x55,0
10、x26,0x25,0x23,0x45, 0x26,0xa9,0x21,0x22,0x63,0x52,0x22,0x22,0x13,0x12,0x21,0xa6,0xf9,0x00,;unsigned char code music_l_tab8=0,1,2,3,4,6,8,16;/节拍延时单位unsigned char code music_freq_tab64= /音符定时器值表0xff,0xea, /0 休止符freq_chn(131), /freq_chn(x/256 /1 do 高字节 /freq_chn(x%256 /1 do 低字节freq_chn(147), /2 refreq_chn(165), /3 mifreq_chn(175), /4 fafreq_chn(196), /5 suofreq_chn(221), /6 lafreq_chn(248), /7 xi0xff,0xea, /0 休止符freq_chn(262), /1 dofreq_chn(294), /2 refreq_chn(330), /3 mifreq_chn(350), /4 fafreq_chn(393), /5 suofreq
