dianziqin.rar_shuandianziqin_电子琴

#include "reg52.h" typedef unsigned char uchar; //数据类型重命名 typedef unsigned int uint ; sbit Led = P3^7; //小灯 sbit Sound = P3^5; //喇叭 uchar TH0_val,TL0_val; //定时器0高低8位 uchar time,flag,num=0; //延时形参 算歌曲的节拍 flag标志位用于切换功能 num用于录音计数 uchar count=0; uint code C_music[] = { 63628,63835,64021,64103,64260,64400,64524, //低音DO RA M FA SO LA SI 64580,64684,64777,64820,64898,64968,65030, //中音DO RA M FA SO LA SI 65058,65110,65157,65178,65217,65252,65283};//高音DO RA M FA SO LA SI uint code C_music_1[] = {64580,64684,64777,64820,64898,64968,65030}; uchar code star[] = {1,1,2,1,1,2,5,1,2,5,1,2,6,1,2,6,1,2,5,1,4,4,1,2,4,1,2,3,1,2,3,1,2,2,1,2,2,1,2,1,1,4, 5,1,2,5,1,2,4,1,2,4,1,2,3,1,2,3,1,2,2,1,4,5,1,2,5,1,2,4,1,2,4,1,2,3,1,2,3,1,2,2,1,4, 1,1,2,1,1,2,5,1,2,5,1,2,6,1,2,6,1,2,5,1,4,4,1,2,4,1,2,3,1,2,3,1,2,2,1,2,2,1,2,1,1,4, 0,0,0}; uchar F_H [20]; //录音数组 void Delay_Init(uchar n) //延时1毫秒 { uchar i; while(n--) for(i = 0; i < 125; i++); } void delay(unsigned char t)//延时t半个节拍 { unsigned char t1; unsigned long t2; for(t1 = 0; t1 < t; t1++) for(t2 = 0; t2 < 8000; t2++); TR0 = 0; } void delay_1(unsigned char t)//延时t半个节拍 { unsigned char t1; unsigned long t2; for(t1 = 0; t1 < t; t1++) for(t2 = 0; t2 < 5000; t2++); TR0 = 0; } void Play_songs() //播放歌曲中一个音符函数 { TH0 = TH0_val; //重新给初值 设置溢出时间 TL0 = TL0_val; TR0 = 1; delay(time); //等待音符播放完毕 } void Play_music(uchar song[]) //播放歌曲函数 { unsigned char k, i; i = 0; time = 1; while(time) { //Delay_Init(3); k = song[i] + 7 * song[i+1] - 1; //i代表音符1~7 i+1代表哪个八度 i+2代表音符占几个节拍 TH0_val = C_music[k]/256; //定时器初值 TL0_val = C_music[k]%256; time = song[i+2]; i +=3; Play_songs(); if(flag==2) //等待功能切换键 结束播放 { break; } } } void Comman_Init() //常规初始化 { TMOD = 0x01; //定时器0 方式1 TH0 = 0xff; TL0 = 0xff; ET0 = 1; IT0 = 1; //下降沿触发 EX0 = 1; EA = 1; } void Led_Init() //小灯的闪灭 { Led = 0; Delay_Init(100); Led = 1; } void Keyscan() //键盘扫描 { uchar key,Key_val; key = P1; if(key != 0xff) { switch(key) { case 0x7f:Key_val=0;Led_Init();break; //Key_val 代表中音音符 DO RA M FA SO LA SI 高音 DO case 0xbf:Key_val=1;Led_Init();break; case 0xdf:Key_val=2;Led_Init();break; case 0xef:Key_val=3;Led_Init();break; case 0xf7:Key_val=4;Led_Init();break; case 0xfb:Key_val=5;Led_Init();break; case 0xfd:Key_val=6;Led_Init();break; case 0xfe:Key_val=7;Led_Init();break; } TH0_val = C_music[Key_val+7]/256; TL0_val = C_music[Key_val+7]%256; TR0 = 1; } else { Sound = 1; TR0 = 0; } } void Keyscan_s() { switch(P1) { case 0x7f:Led_Init();Play_music(nanhai);break; //star } } void main() { uchar Key_val_1; Comman_Init(); //初始化 while(1) { if(flag==0) //判断哪种功能 { Keyscan(); //单音符播放 } else if(flag==1) { Keyscan_s(); //整首歌曲播放 } } else { TR0=0; Sound =1; } } if(flag==2) //退出播放 { TR0=0; Sound =1; } } } } void int0_Enable() interrupt 0 //中断服务程序 { Led_Init(); flag++; if(flag==5) { flag=0; } } void T0_Enable() interrupt 1 //定时器服务程序 { TH0 = TH0_val; //重新赋值 为下次溢出做准备 TL0 = TL0_val; Sound = ~Sound; }