单片机IO口播放乐曲.doc

单片机IO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)Copyright20012002xuwenjun/AllRightsReserved/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)/-/#include#include#defineFREQ11059200#definefreq_chn(f)255-f/24/147/256,256-f/24/147%256/音乐_编码2-存储器定义/unsignedcharcodemusic_tab1=/音符码格式:|D7|D6D5D4|D3|D2D1D0|/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,0x99,0x96,0x15,0x13,0x15,0x62,0x32,0x13,0xa7,0x26,0x25,0x16,0xa9,0x22,0xa3,0xa9,0x96,0x15,0x16,0x99,0xe5,0xbb,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:|D7D6D5D4|D3D2D1D0|/|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;unsignedcharcodemusic_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,0x25,0x53,0x12,0x11,0xd6,0xad,0x23,0x12,0x13,0x12,0x11,0x22,0xd6,0x00,;unsignedcharcodemusic_tab3=/美酒加咖啡0x55,0x23,0x25,0x26,0xa9,0x22,0x73,0x45,0x25,0x26,0x23,0x22,0x21,0x23,0x72,0x52,0x23,0x45,0x43,0x22,0x21,0xa6,0x25,0x66,0xc9,0xa6,0x25,0x23,0x25,0x26,0xa9,0xf5,0x45,0x23,0x25,0x46,0xc9,0x22,0x13,0x12,0x21,0x22,0x63,0x22,0x23,0x25,0x26,0x25,0x23,0x22,0x21,0x72,0x52,0x23,0x45,0x43,0x22,0x21,0xa6,0x25,0x66,0xb9,0x12,0x23,0x25,0x22,0xa5,0xab,0x22,0x71,0x00,;unsignedcharcodemusic_tab4=/北国之春0x15,0x16,0x75,0x15,0x16,0x55,0x13,0x15,0x16,0x15,0x16,0x99,0x12,0x13,0x65,0x45,0x13,0x12,0x11,0x12,0x73,0x62,0x42,0x12,0x11,0x96,0x15,0x76,0x55,0x23,0x45,0xa9,0x22,0x53,0x12,0x13,0x65,0x52,0x22,0x42,0x21,0xa6,0xe9,0x91,0x12,0x13,0x12,0x13,0x15,0x99,0x12,/以上为过门0x20,0x23,0x23,0x23,0x63,0x22,0x23,0x23,0x22,0x41,0xa6,0x25,0x53,0x22,0x21,0xa9,0x21,0xa6,0x75,0x26,0xa9,0x21,0xa6,0xc9,0x12,0x11,0x96,0x15,0x23,0x25,0x25,0x26,0x45,0x21,0x22,0x13,0x35,0x25,0xa9,0xa6,0x25,0x23,0x22,0x71,0x52,0x25,0x45,0x13,0x15,0x13,0x12,0x21,0x41,0x22,0x43,0x45,0x23,0x25,0x26,0xa9,0x42,0x12,0x33,0x72,0x51,0x22,0x43,0x22,0x21,0xc6,0xc9,0x29,0xc6,0x45,0x23,0x23,0x53,0x25,0x26,0x25,0x13,0x12,0x21,0x62,0x42,0x23,0x25,0x55,0x26,0x25,0x23,0x45,0x26,0xa9,0x21,0x22,0x63,0x52,0x22,0x22,0x13,0x12,0x21,0xa6,0xf9,0x00,;unsignedcharcodemusic_l_tab8=0,1,2,3,4,6,8,16;/节拍延时单位unsignedcharcodemusic_freq_tab64=/音符定时器值表0xff,0xea,/0休止符freq_chn(131),/freq_chn(x/256/1do高字节/freq_chn(x%256/1do低字节freq_chn(147),/2refreq_chn(165),/3mifreq_chn(175),/4fafreq_chn(196),/5suofreq_chn(221),/6lafreq_chn(248),/7xi0xff,0xea,/0休止符freq_chn(262),/1dofreq_chn(294),/2refreq_chn(330),/3mifreq_chn(350),/4fafreq_chn(393),/5suofreq_chn(441),/6lafreq_chn(495),/7xi0xff,0xea,/0休止符freq_chn(525),/1dofreq_chn(589),/2refreq_chn(661),/3mifreq_chn(700),/4fafreq_chn(786),/5suofreq_chn(882),/6lafreq_chn(990),/7xi0xff,0xea,/0休止符freq_chn(1049),/1dofreq_chn(1178),/2refreq_chn(1322),/3mifreq_chn(1400),/4fafreq_chn(1572),/5suofreq_chn(1665),/6lafreq_chn(1869),/7xi;unsignedcharcodemusic_frequp_tab64=/升半音0xff,0xea,/0休止符freq_chn(139),/1do高字节freq_chn(156),/2refreq_chn(175),/3mifreq_chn(185),/4fafreq_chn(208),/5suofreq_chn(234),/6lafreq_chn(262),/7xi0xff,0xea,/0休止符freq_chn(278),/1dofreq_chn(312),/2refreq_chn(350),/3mifreq_chn(371),/4fafreq_chn(416),/5suofreq_chn(467),/6lafreq_chn(525),/7xi0xff,0xea,/0休止符freq_chn(556),/1dofreq_chn(624),/2refreq_chn(700),/3mifreq_chn(742),/4fafreq_chn(833),/5suofreq_chn(935),/6lafreq_chn(1049),/7xi0xff,0xea,/0休止符freq_chn(1112),/1dofreq_chn(1248),/2refreq_chn(1400),/3mifreq_chn(1484),/4fafreq_chn(1618),/5suofreq_chn(1764),/6lafreq_chn(1968),/7xi;unsignedchartemp_TH1;unsignedchartemp_TL1;/音乐_编码2-IO定义/sbitPIN_MSC=P10;/音乐输出端口/音乐_编码2-函数原型/voidmusic_delay(unsignedcharx);/音乐节拍延时voidmusic_play(unsignedchar*msc);/播放音乐子程序/音乐_编码2-函数/-/voidmusic_int_t1(void)interrupt3using1/定时中断1/PIN_MSC=PIN_MSC;TH1=temp_TH1;TL1=temp_TL1;/-/voidmusic_delay(unsignedcharn)/延时125*n毫秒unsignedchari=125,j;dodofor(j=0;j4;/-if(music_long!=0)/是音符if(*msc=128)/需升降调if(*msc)&0x08)=0)if(music_freq=16)music_freq-=16;/音高下降elseif(music_freq48)music_freq+=16;/音高上升/-if(music_up=1)/升半音temp_TH1=music_frequp_tab(music_freq+(music_data1);temp_TL1=music_frequp_tab(music_freq+(music_data1)+1);else/不升半音temp_TH1=music_freq_tab(music_freq+(music_data1);temp_TL1=music_freq_tab(music_freq+(music_data1)+1);/-if(music_break)/断奏music_delay(music_l_tabmusic_long&0x07-1);temp_TH1=0xff;temp_TL1=0xea;music_delay(1);else/连奏music_delay(music_l_tabmusic_long&0x07);/-else/是功能码switch(music_data)case0x04:music_up=0;/不升半音break;case0x05:music_up=1;/升半音break;case0x06:music_break=0;/断奏break;case0x07:music_break=1;/连奏break;default:break;/-msc+;ET1=0;/播放结束,关T1中断PIN_MSC=1;/关输出/temp_TH1=0xff;/temp_TL1=0xea;/关输出(输出超声波)/ET0=1;/开T0定时器中断/TMOD=0x51;/T0：16位定时器、T1：16位计数器/-/voidmain(void)/示例/设置定时器-TMOD=0x11;/TMOD:定时器1:模式1:16