基于89c51的简易电子琴课程设计

#include<reg51.h> sbit high_tongue=P3^0; //高音控制位 sbit low_tongue=P3^1; //低音控制位 sbit eg_music=P3^2; //示例音乐控制位 sbit speak=P3^3; //喇叭控制位 int temp,key=16; unsigned char Count; //共阳极数码管显示按键号码 code unsigned char led[]={0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0xff}; //低音、中音高音音频换算表（默认为中音） code unsigned int table[]={63628,63835,64021,64103,64260,64400,64524,64550, 64580,64684,64777,64820,64898,64968,65030,65050, 65058,65110,65157,65178,65217,65252,65283,65310}; //示例音乐 unsigned char code SONG[] ={0x26,0x20,0x20,0x20,0x20,0x20,0x26,0x10,0x20,0x10,0x20,0x80,0x26,0x20,0x30,0x20, 0x30,0x20,0x39,0x10,0x30,0x10,0x30,0x80,0x26,0x20,0x20,0x20,0x20,0x20,0x1c,0x20, 0x20,0x80,0x2b,0x20,0x26,0x20,0x20,0x20,0x2b,0x10,0x26,0x10,0x2b,0x80,0x26,0x20, 0x30,0x20,0x30,0x20,0x39,0x10,0x26,0x10,0x26,0x60,0x40,0x10,0x39,0x10,0x26,0x20, 0x30,0x20,0x30,0x20,0x39,0x10,0x26,0x10,0x26,0x80,0x26,0x20,0x2b,0x10,0x2b,0x10, 0x2b,0x20,0x30,0x10,0x39,0x10,0x26,0x10,0x2b,0x10,0x2b,0x20,0x2b,0x40,0x40,0x20, 0x20,0x10,0x20,0x10,0x2b,0x10,0x26,0x30,0x30,0x80,0x18,0x20,0x18,0x20,0x26,0x20, 0x20,0x20,0x20,0x40,0x26,0x20,0x2b,0x20,0x30,0x20,0x30,0x20,0x1c,0x20,0x20,0x20, 0x20,0x80,0x1c,0x20,0x1c,0x20,0x1c,0x20,0x30,0x20,0x30,0x60,0x39,0x10,0x30,0x10, 0x20,0x20,0x2b,0x10,0x26,0x10,0x2b,0x10,0x26,0x10,0x26,0x10,0x2b,0x10,0x2b,0x80, 0x18,0x20,0x18,0x20,0x26,0x20,0x20,0x20,0x20,0x60,0x26,0x10,0x2b,0x20,0x30,0x20, 0x30,0x20,0x1c,0x20,0x20,0x20,0x20,0x80,0x26,0x20,0x30,0x10,0x30,0x10,0x30,0x20, 0x39,0x20,0x26,0x10,0x2b,0x10,0x2b,0x20,0x2b,0x40,0x40,0x10,0x40,0x10,0x20,0x10, 0x20,0x10,0x2b,0x10,0x26,0x30,0x30,0x80,0x00, //祝你平安 0x30,0x1C,0x10,0x20,0x40,0x1C,0x10,0x18,0x10,0x20,0x10,0x1C,0x10,0x18,0x40,0x1C, 0x20,0x20,0x20,0x1C,0x20,0x18,0x20,0x20,0x80,0xFF,0x20,0x30,0x1C,0x10,0x18,0x20, 0x15,0x20,0x1C,0x20,0x20,0x20,0x26,0x40,0x20,0x20,0x2B,0x20,0x26,0x20,0x20,0x20, 0x30,0x80,0xFF,0x20,0x20,0x1C,0x10,0x18,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30, 0x20,0x2B,0x40,0x20,0x20,0x1C,0x10,0x18,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30, 0x20,0x2B,0x40,0x20,0x30,0x1C,0x10,0x18,0x20,0x15,0x20,0x1C,0x20,0x20,0x20,0x26, 0x40,0x20,0x20,0x2B,0x20,0x26,0x20,0x20,0x20,0x30,0x80,0x20,0x30,0x1C,0x10,0x20, 0x10,0x1C,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30,0x20,0x2B,0x40,0x20,0x15,0x1F, 0x05,0x20,0x10,0x1C,0x10,0x20,0x20,0x26,0x20,0x2B,0x20,0x30,0x20,0x2B,0x40,0x20, 0x30,0x1C,0x10,0x18,0x20,0x15,0x20,0x1C,0x20,0x20,0x20,0x26,0x40,0x20,0x20,0x2B, 0x20,0x26,0x20,0x20,0x20,0x30,0x30,0x20,0x30,0x1C,0x10,0x18,0x40,0x1C,0x20,0x20, 0x20,0x26,0x40,0x13,0x60,0x18,0x20,0x15,0x40,0x13,0x40,0x18,0x80,0x00 //路边的野花不要采 }; //1ms延时子程序 void Delay_xMs(unsigned int x) { unsigned int i,j; for(i=0;i<x;i++) { for(j=0;j<3;j++); } } //定时器1的初始化 void Time1_Init() { TMOD=TMOD|0x10; EA=1; ET1=1; TH1=0xD8; TL1=0xEF; } //定时器中断函数 void Time1_Int() interrupt 3 { TH1=0xD8; TL1=0xEF; Count++; } //示例音乐播放函数 void Play_Song(unsigned char i) { unsigned char Temp1,Temp2; unsigned int Addr; Count=0; Addr=i*217; while(1) { Temp1=SONG[Addr++]; if(Temp1==0xFF) { TR1=0; Delay_xMs(100); } else if(Temp1==0x00) { Addr++; i++; if(i==2) { i=0; return; } } else { Temp2=SONG[Addr++]; TR1=1; while(1) { speak=~speak; Delay_xMs(Temp1); if(Temp2==Count) { Count=0; break; } } } } } //主函数 void main() { P0=0xff; //数码管初始灭 TMOD=0x01; EA=1; ET0=1; while(1) { temp=P1; if(temp!=0xff) { Delay_xMs(100); //消抖 if(temp!=0xff) temp=P1; TR0=1; } else TR0=0; switch(temp) //按键检测 { case 0xfe: key=8; break; case 0xfd: key=9; break; case 0xfb: key=10; break; case 0xf7: key=11; break; case 0xef: key=12; break; case 0xdf: key=13; break; case 0xbf: key=14; break; case 0x7f: key=15; break; } temp=P1; P0=led[key-8]; //数码管显示相应数字 Delay_xMs(5000); TH0=table[key]/256; //定时器赋初值 TL0=table[key]%256; /*******高音按钮是否按下，按下数码管显示A,重新按键盘则发出高音***********/ while(!high_tongue) { P0=0x88; //A表示升高音调 temp=P1; if(temp!=0xff) { Delay_xMs(100); //消抖 if(temp!=0xff) temp=P1; TR0=1; } else TR0=0; switch(temp) //按钮检测 { case 0xfe: key=8; break; case 0xfd: key=9; break; case 0xfb: key=10; break; case 0xf7: key=11; break; case 0xef: key=12; break; case 0xdf: key=13; break; case 0xbf: key=14; break; case 0x7f: key=15; break; } temp=P1; key=key+8; Delay_xMs(5000); TH0=table[key+8]/256; TL0=table[key+8]%256; } /*******低音按钮是否按下，按下数码管显示B,重新按键盘则发出低音***********/ while(!low_tongue) { P0=0x83; // B表示降低音调 temp=P1; if(temp!=0xff) { Delay_xMs(100); if(temp!=0xff) temp=P1; TR0=1; } else TR0=0; switch(temp) { case 0xfe: key=8; break; case 0xfd: key=9; break; case 0xfb: key=10; break; case 0xf7: key=11; break; case 0xef: key=12; break; case 0xdf: key=13; break; case 0xbf: key=14; break; case 0x7f: key=15; break; } temp=P1; key=key-8; Delay_xMs(5000); TH0=table[key]/256; TL0=table[key]%256; } /*********按下按钮，播放示例音乐，数码管显示C***************/ while(!eg_music) { P0=0xc6; //C表示播放示例音乐 Time1_Init(); Play_Song(0);// 调用示例音乐函数 TR0=0; } } } //单独按键中断处理函数 void init_interrupt(void ) interrupt 1 { TR0=0; TH0=table[key]/256; TL0=table[key]%256; speak=~speak; TR0=1; }