at89c51单片机编程，遇到个问题，望指教
这是一个AT89C51单片机电子琴的c语言代码，要播放存入的歌曲和1-7七个音阶，同时8段数码管在按下音阶时对应的简谱数字要亮起来。但是编译成功之后，数码管和键盘都没有工作，即数码管不亮同时按下键盘也没有声音（键盘为4x4键盘）
程序代码：#include
#define uint unsigned int
#define uchar unsigned char
void Init(void);//初始化
void Key_Scan(void);//键值扫描
void Delayms(uint z);//延时
void LED_Display(void);//数码显示
void Sound_Player(void);//音频处理
uint Keycode;//键值
uint Time = 0;
uint Flag = 0;
uint TH0code,TL0code;
sbit Speaker = P3^0; //扬声器控制引脚
uint Num = 0;
uchar code table[]={ //数码管共阳码表
0xc0,0xF9,0xA4,0xB0,
0X99,0X92,0X82,0XF8,
0x80,0x90,0x88,0x83,
0xC6,0xA1,0x86,0x8E};
uchar code Music1_Tab[]={
0xc0,0xf9,0xa4,0xb0,
0x99,0x92,0x82,0xf8,
0x80,0x90,0x88,0x83,
0xc6,0xa1,0x86,0x8e}; //曲谱1码表
uint code Music2_Tab[]={ //曲谱2码表
64021,64103,64260,64400,
64524,64580,64684,64777,
64820,64898,64968,65030,
65058,65110,65157,65178};
uchar code Music3_Tab[]={ //曲谱3码表
0x64,0x42,0x62,0x98,0x74,0x92,0x72,0x68,
0x64,0x22,0x32,0x44,0x32,0x22,0x3c,0x64,
0x42,0x62,0x94,0x04,0x82,0x74,0x94,0x68,
0x64,0x32,0x42,0x54,0x04,0x12,0x2c,0x74,
0x94,0x98,0x84,0x72,0x82,0x98,0x72,0x82,
0x92,0x72,0x72,0x62,0x42,0x22,0x3c,0x64,
0x42,0x62,0x94,0x04,0x82,0x74,0x94,0x68,
0x64,0x32,0x42,0x54,0x04,0x12,0x2c,0x00};
/****************************************
主函数
****************************************/
void main()
{
Init();
while(1)
{
Sound_Player();//音频处理函数
LED_Display();//数码管显示键值
}
}
/****************************************
初始化函数
****************************************/
void Init(void)
{
P0 = 0xff;//先将P0口置为1
Speaker = 0;
IT0 = 1;//外部中断0边沿触发
EX0 = 1;//外部中断0允许
TMOD = 0x01;//定时器方式1
ET0 = 1;//定时器0中断允许
TR0 = 0;//关定时器0
EA = 1;//开总中断
}
/****************************************
音频处理函数
****************************************/
void Sound_Player(void)
{
if(Flag == 0) //Do~Si七个音调键
{
Flag = 1;
switch(Keycode)
{
case 1: //Do
{
TH0code = 0XFB;
TL0code = 0XE9;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
Speaker = ~Speaker;
break;
}
case 2: //Re
{
TH0code = 0XFC;
TL0code = 0X5C;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
Speaker = ~Speaker;
break;
}
case 3: //Mi
{
TH0code = 0XFC;
TL0code = 0X5C;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
Speaker = ~Speaker;
break;
}
case 4: //Fa
{
TH0code = 0XFC;
TL0code = 0X5C;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
Speaker = ~Speaker;
break;
}
case 5: //So
{
TH0code = 0XFC;
TL0code = 0X5C;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
Speaker = ~Speaker;
break;
}
case 6: //La 基于51单片机的电子琴设计
{
TH0code = 0XFC;
TL0code = 0X5C;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
Speaker = ~Speaker;
break;
}
case 7: //Si
{
TH0code = 0XFC;
TL0code = 0X5C;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
Speaker = ~Speaker;
break;
}
default:break;
}
}
else if(Keycode ==8) //特殊功能键
{
switch(Time)
{
case 1: //播放第一首乐曲
{
TH0code = Music1_Tab[Num++];
TL0code = Music1_Tab[Num++];
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
if(Num == 15) Num = 0;
Speaker = ~Speaker;
break;
}
case 2: //播放第二首乐曲
{
TH0code = Music2_Tab[Num]/256;
TL0code = Music2_Tab[Num]%256;
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0 基于51单片机的电子琴设计
Num++;
if(Num == 15) Num = 0;
Speaker = ~Speaker;
break;
}
case 3: //播放第三首乐曲
{
TH0code = Music3_Tab[Num++];
TL0code = Music3_Tab[Num++];
TH0 = TH0code; //置初值
TL0 = TL0code;
TR0 = 1; //开定时器0
if(Num == 64) Num = 0;
Speaker = ~Speaker;
break;
}
default: break;
}
}
}
/****************************************
数码管显示函数
***************************************/
void LED_Display(void)
{
if(Keycode>0 && Keycode<8)
P0 = ~table[Keycode];//Do~Si七个音调键分别显示1~7
else
if(Keycode == 8)
P0 = ~table[Time + 9];//特殊功能键分别显示A、b、C
TR0 = 0; //关定时器0
}
/****************************************
键值扫描函数
****************************************/
void Key_Scan(void)
{
uint key;
key = P1;
switch(key) //键值
{
case 0xfe: //Do
{
Delayms(10); //消抖 基于51单片机的电子琴设计
if(key == 0xfe)
{
Keycode = 1;
Flag = 0;
while(P1 != 0xFF); //等待按键释放
break;
}
}
case 0xfd: //Re
{
Delayms(10);
if(key == 0xfd)
{
Keycode = 2;
Flag = 0;
while(P1 != 0xFF); //等待按键释放
break;
}
}
case 0xfb: //Mi
{
Delayms(10);
if(key == 0xfb)
{
Keycode = 3;
Flag = 0;
while(P1 != 0xFF); //等待按键释放
break;
}
}
case 0xf7: //Fa
{
Delayms(10);
if(key == 0xf7)
{
Keycode = 4;
Flag = 0;
while(P1 != 0xFF); //等待按键释放
break;
}
}
case 0xef: //So
{
Delayms(10);
if(key == 0xef)
{
Keycode = 5;
Flag = 0;
while(P1 != 0xFF); //等待按键释放
break;
}
}
case 0xdf: //La
{
Delayms(10);
if(key == 0xdf)
{
Keycode = 6;
Flag = 0;
while(P1 != 0xFF); //等待按键释放
break;
}
}
case 0xbf: //Si
{
Delayms(10);
if(key == 0xbf)
{
Keycode = 7;
Flag = 0;
while(P1 != 0xFF); //等待按键释放
break;
}
}
case 0x7f: // 播放/下一首
{
Delayms(10);
if(key == 0x7f)
{
Keycode = 8;
Flag = 1;
Num = 0;
if(Time == 4)Time=0;
Time++;
while(P1 != 0xFF); //等待按键释放
break;
}
}
default : break;
}
}
void Delayms(uint z)//延时ms
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
/****************************************
键盘中断函数
****************************************/
void Key_inter() interrupt 0
{
Key_Scan();//键值扫描
}
/****************************************
定时中断函数
****************************************/
void T0_inter() interrupt 1
{
TH0 = TH0code;
TL0 = TL0code;
Speaker = ~Speaker;
}
