1246173372 发表于 2015-12-5 14:48
大神，可以把这个电子琴的代码给我一下吗，我下了没办法看
#include<reg52.h>
#include<intrins.h>
#define uchar unsigned char
#define uint unsigned int
#define allsong 4 //歌曲总数 按实际写
sbit P1_0 = P1^0;
sbit P1_1 = P1^1;
sbit P1_2 = P1^2;
sbit P1_3 = P1^3;
sbit P1_4 = P1^4;
sbit P1_5 = P1^5;
sbit P1_6 = P1^6;
sbit P1_7 = P1^7;
sbit beep = P3^0;
sbit key_play = P3^1;
uchar x = 0; /*矩阵键盘横坐标 从1开始 0为未按下的标志 */
uchar y = 0; /*矩阵键盘纵坐标 从1开始 0为未按下的标志 */
uchar flash = 0;//控制led灯显示的变量 */
uchar f_l; /*按键发出音调的初值(低位）*/
uchar f_h; //高位
uchar song_l;/*歌曲音调的初值（低位）*/
uchar song_h;//高位
uchar out = 0;/*声音输出变量 1表示有输出 0表示无输出 */
uchar yindiao;/*音调 定义为全局变量 为了在播放时数码管能显示当前音调*/
uchar yindiao_h;//音调的高四位
uchar yindiao_l;//音调的低四位
uchar jiepai;/*节拍（简而言之就是一个音调响的时间长度）*/
uchar song_id = 1;//歌曲序号变量
uchar temp_id = 1;//歌曲临时序号
uint which = 2;/*简谱表里的第几个音 从第2个开始 第0个用来存曲速，第1个占位*/
uchar same = 0; /*在暂停时选了同一首歌曲，用于跳出暂停循环*/
uchar key_x(); //获取键盘横坐标 函数
uchar key_y();//获取键盘纵坐标 函数
void play(); //播放歌曲 函数
void delayms(uint ms);//延时xx ms 函数
void delay(uint pai);//节拍延时 函数
void key_check(); //检查按键状态 函数
void display(); //数码管显示对应音调 函数
void speak();/*按键后 给定时器0赋对应音调的初值 从而发出声音*/
uchar choose();/*播放状态下 选歌函数 释放按键后才跳出函数，返回歌曲序号*/
uchar choose2();/*暂停状态下 选歌函数 不用释放按键即可跳出函数，返回歌曲序号 */
void play();//播放歌曲 函数
uchar code num[]={0x00,//数码管段选码
0x77,0x7c,0x39,0x5e,0x79,0x71,0x3d, //a - g
0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, //1 - 7
0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87 //1. - 7.
};
uchar code led_table[]={0xff,0x7f,0x3f,0x1f,0x0f,0x07,0x03,0x01,0x00};/*发光二极管闪烁表*/
uchar code chuzhi[]={ //音调对应的计数初值
0xff,0xff,//占0位
0xf8,0x8c,//低1 (0x01)a -数码管显示方式
0xf9,0x5b,// 2 b
0xfa,0x15,// 3 c
0xfa,0x67,// 4 d
0xfb,0x04,// 5 e
0xfb,0x90,// 6 f
0xfc,0x0c,//低7（0x07）g
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /*占位 0x08 - 0x0b (8 - 11)*/
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, 0xff,0xff,/*占位 0x0c - 0x10(12 - 16)*/
0xfc,0x44,//中1 （0x11） (17)
0xfc,0xac,// 2
0xfd,0x09,// 3
0xfd,0x34,// 4
0xfd,0x82,// 5
0xfd,0xc8,// 6
0xfe,0x06,//中7 （0x17） (23)
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /*占位 0x18 - 0x1b (24 - 27)*/
0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff, /*占位 0x1c - 0x20 (28 - 32)*/
0xfe,0x22,//高1 （0x21）1. (33)
0xfe,0x56,//2 2.
0xfe,0x85,//3 3.
0xfe,0x9a,//4 4.
0xfe,0xc1,//5 5.
0xfe,0xe4,//6 6.
0xff,0x03 //高7 （0x27）7. (39)
};
uchar code ymt[]={//玉满堂
0x96,0x00, //曲速 0x96表示 150拍/分
0x00,0x0a,0x05,0x02,0x15,0x02,0x12,0x02,
0x13,0x04,0x13,0x02,0x15,0x02,0x12,0x04,0x12,0x02,0x13,0x02,
0x12,0x10,
0x13,0x04,0x13,0x02,0x12,0x02,0x13,0x04,0x15,0x02,0x16,0x02,
0x15,0x0c,0x13,0x02,0x15,0x02,
0x16,0x04,0x16,0x02,0x21,0x02,0x16,0x04,0x15,0x02,0x13,0x02,
0x15,0x0c,0x15,0x02,0x16,0x02,
0x21,0x04,0x21,0x02,0x22,0x02,0x23,0x04,0x22,0x02,0x21,0x02,
0x22,0x10,
0x23,0x08,0x15,0x02,0x16,0x02,0x21,0x02,0x22,0x02,
0x23,0x04,0x23,0x02,0x22,0x02,0x21,0x06,0x21,0x02,
0x16,0x04,0x16,0x02,0x21,0x02,0x16,0x04,0x13,0x04,
0x15,0x10,
0x16,0x04,0x16,0x02,0x21,0x02,0x16,0x04,0x21,0x02,0x22,0x02,
0x23,0x04,0x23,0x02,0x22,0x02,0x21,0x06,0x21,0x02,
0x16,0x02,0x21,0x02,0x16,0x02,0x21,0x02,0x22,0x02,0x23,0x02,0x25,0x02,0x23,0x02,
0x22,0x0c,0x21,0x02,0x22,0x02,
0x23,0x06,0x15,0x02,0x16,0x02,0x21,0x02,0x22,0x02,
0x23,0x04,0x23,0x02,0x22,0x02,0x21,0x06,0x21,0x02,
0x16,0x04,0x16,0x02,0x21,0x02,0x16,0x02,0x21,0x02,0x15,0x02,0x13,0x02,
0x15,0x0c,0x13,0x02,0x15,0x02,
0x16,0x04,0x16,0x02,0x21,0x02,0x16,0x04,0x16,0x02,0x21,0x02,
0x22,0x04,0x22,0x02,0x23,0x02,0x22,0x04,0x22,0x02,0x23,0x02,
0x25,0x02,0x26,0x02,0x23,0x02,0x25,0x02,0x22,0x02,0x23,0x02,0x21,0x02,0x16,0x02,
0x21,0x10,
0xff
};
uchar code dl[]={ //蝶恋
0x8c,0x00, //曲速 0x8c表示 140拍/分
0x13,0x04,0x13,0x04,0x13,0x04,0x12,0x04,0x13,0x08,
0x12,0x04,0x13,0x04,0x12,0x04,0x12,0x04,0x06,0x08,
0x06,0x04,0x07,0x04,0x11,0x08,0x12,0x04,0x11,0x04,0x07,0x08,0x06,0x04,0x05,0x04,0x06,0x10,
0x13,0x04,0x13,0x04,0x13,0x04,0x12,0x04,0x13,0x0c,
0x16,0x04,0x15,0x04,0x16,0x04,0x15,0x04,0x15,0x04,0x12,0x04,
0x12,0x04,0x13,0x04,0x14,0x08,0x15,0x04,0x14,0x04,0x13,0x04,0x12,0x04,0x11,0x04,0x13,0x0f,0x13,0x0c,
0x13,0x04,0x16,0x08,0x17,0x04,0x16,0x04,0x15,0x0c,0x13,0x04,0x15,0x0f,
0x13,0x04,0x15,0x04,0x12,0x08,0x16,0x04,0x15,0x04,0x13,0x08,0x12,0x04,0x12,0x04,0x13,0x0c,
0x12,0x08,0x16,0x04,0x16,0x0c,
0x11,0x08,0x16,0x04,0x16,0x08,
0x16,0x04,0x17,0x04,0x21,0x08,0x17,0x04,0x16,0x04,0x17,0x08,0x16,0x04,0x17,0x04,0x13,0x08,0x13,0x0c,
0x13,0x04,0x16,0x08,0x17,0x08,0x16,0x04,0x15,0x0c,0x13,0x04,0x15,0x10,
0x14,0x04,0x15,0x04,0x16,0x08,0x17,0x04,0x16,0x04,0x17,0x08,
0x16,0x04,0x17,0x04,0x13,0x10,0x13,0x10,
0x12,0x08,0x16,0x04,0x16,0x02,0x16,0x10,
0x11,0x04,0x16,0x04,0x16,0x02,0x16,0x08,
0x16,0x04,0x17,0x04,0x21,0x08,0x17,0x04,0x16,0x04,0x17,0x08,0x15,0x08,0x16,0x10,
0x23,0x04,0x22,0x04,0x22,0x04,0x21,0x04,0x21,0x04,0x17,0x04,0x17,0x04,0x16,0x04,
0x21,0x04,0x17,0x04,0x17,0x04,0x16,0x04,0x16,0x04,0x15,0x04,0x15,0x04,0x14,0x04,
0x16,0x04,0x15,0x04,0x15,0x04,0x14,0x04,0x14,0x04,0x13,0x04,0x13,0x04,0x12,0x04,
0x13,0x10,0x13,0x10,
0xff
};
uchar code srkl[]={//生日快乐
0x78,0x00, //曲速 120
0x15,0x02,0x15,0x02,
0x16,0x04,0x15,0x04,0x21,0x04,
0x17,0x04,0x00,0x04,0x15,0x02,0x15,0x02,
0x16,0x04,0x15,0x04,0x22,0x04,
0x21,0x08,0x15,0x02,0x15,0x02,
0x25,0x04,0x23,0x04,0x21,0x04,
0x17,0x04,0x16,0x08,
0x16,0x04,0x00,0x04,0x24,0x02,0x24,0x02,
0x23,0x04,0x21,0x04,0x22,0x04,
0x21,0x08,
0x21,0x08,0x00,0x08,
0x15,0x02,0x15,0x02,//第二遍
0x16,0x04,0x15,0x04,0x21,0x04,
0x17,0x04,0x00,0x04,0x15,0x02,0x15,0x02,
0x16,0x04,0x15,0x04,0x22,0x04,
0x21,0x08,0x15,0x02,0x15,0x02,
0x25,0x04,0x23,0x04,0x21,0x04,
0x17,0x04,0x16,0x08,
0x16,0x04,0x00,0x04,0x24,0x02,0x24,0x02,
0x23,0x04,0x21,0x04,0x22,0x04,
0x21,0x08,
0x21,0x08,0x00,0x04,
0xff
};
uchar code test[]={//测试
0x78,0x00, //曲速 0x78表示 120拍/分
0x01,0x04,0x02,0x04,0x03,0x04,0x04,0x04,0x05,0x04,0x06,0x04,0x07,0x04,0x00,0x04,
0x11,0x08,0x12,0x07,0x13,0x06,0x14,0x05,0x15,0x04,0x16,0x03,0x17,0x02,0x00,0x01,
0x21,0x01,0x22,0x02,0x23,0x03,0x24,0x04,0x25,0x05,0x26,0x06,0x27,0x07,0x00,0x08,
0xff,
};
void delayms(uint ms) /*ms 等于1时，延时1ms 等于2时，延时2ms，以此类推*/
{
uchar a,b,c; //+3
while(ms--)
{
for(c=1;c>0;c--)// 1+2 = 3
for(b=142;b>0;b--) //1*( 1+142*2)) = 285
for(a=2;a>0;a--);// 142*(1+2*2) = 710
}
}
void delay(uint pai)/*pai 是节拍 pai若定义成uchar类型，当节拍>0x0c时，会造成数据溢出，产生失真。*/
{
uchar a,b,c;
while(pai--)//延迟pai 个 6.25ms
{
for(c=1;c>0;c--) //1+2=3
for(b=28;b>0;b--)// 1*(1+28*2) =57
for(a=110;a>0;a--);//28*(1+110*2) = 6188
}
}
uchar key_x() /*P1口高位接纵坐标（P1.7 - P1.4） 低位接横坐标(P1.3 - P1.0)*/
{
uchar i;
P1 = 0x0f; /*有按键按下后 对应按键的横坐标电位被拉低（ 注意低电位引脚不能被高电位引脚抬高，只能是低电位拉低高电位）*/
if(P1_0 == 0)
{delayms(5); //延时5ms 去抖动
if(P1_0 == 0)
i = 1;
}
else if(P1_1 == 0)
{delayms(5);
if(P1_1 == 0)
i = 2;
}
else if(P1_2 == 0)
{delayms(5);
if(P1_2 == 0)
i = 3;
}
else if(P1_3 == 0)
{delayms(5);
if(P1_3 == 0)
i = 4;
}
else
i = 0;
return (i);//0表示按键未按下
}
uchar key_y()
{
uchar j;
P1 = 0xf0;
if(P1_4 == 0)
{delayms(5);
if(P1_4 == 0)
j = 1;
}
else if(P1_5 == 0)
{delayms(5);
if(P1_5 == 0)
j = 2;
}
else if(P1_6 == 0)
{delayms(5);
if(P1_6 == 0)
j = 3;
}
else if(P1_7 == 0)
{delayms(5);
if(P1_7 == 0)
j = 4;
}
else
j = 0;
return (j);
}
void key_check() /*检查矩阵按键坐标、播放键的状态及播放键状态设置*/
{
x = key_x();
y = key_y();
if(key_play == 0)
key_play = 0; /*保持播放键引脚低电平，让其作为歌曲正在播放的标志*/
else
key_play = 1; /*保持播放键引脚高电平，让其作为歌曲未播放的标志*/
}
void display() /*数码管显示相应的音调*/
{
if(key_play == 1) //按键弹奏时
{if(x != 0 && y != 0 )
{
if(x == 1)
P0 = num[3 + y] ; //低音4 - 7
else if(x == 2)
P0 = num[7 + y]; //中音1 - 4
else if(x == 3)
P0 = num[11 + y]; //中音5 - 7 和 高音 1
else if(x == 4)
P0 = num[15 + y]; //高音2 - 5
}
else
P0 = 0x00;
}
else //播放音乐时
{if(yindiao_h == 0) /* yindiao变量的高四位表示 低（0） 中（1） 高（2） 音*/
P0 = num[yindiao_l];/*yindiao变量的低四位表示“调”， 数码管显示当前音调*/
else if(yindiao_h == 1) //中音
P0 = num[yindiao_l + 7];
else if(yindiao_h == 2) //高音
P0 = num[yindiao_l + 14];
}
}
void speak()/* 按键 ，为定时器0 T0 赋计数初值，让 T0函数驱动蜂鸣器发出对应的音调 */
{
if(x == 1)
{
f_h = chuzhi[2*y + 6]; //低音4 - 7
f_l = chuzhi[2*y + 6 + 1];
}
else if(x == 2)
{
f_h = chuzhi[(16+y)*2]; //中音 1 -4
f_l = chuzhi[(16+y)*2 +1];
}
else if(x == 3)
{
if(y <= 3)
{
f_h = chuzhi[(20+y)*2]; //中音 5 - 7
f_l = chuzhi[(20+y)*2 + 1];
}
else
{
f_h = chuzhi[66]; //高音1
f_l = chuzhi[67];
}
}
else if(x == 4)
{
f_h = chuzhi[(33+y)*2]; //高音2 -5
f_l = chuzhi[(33+y)*2 + 1];
}
}
void timer0() interrupt 1 //定时器0
{
if(key_play == 0)
{
TL0 = song_l;
TH0 = song_h;
beep = ~beep;
}
else
if(x != 0 && y != 0 && key_play == 1)/*当有矩阵按键按下，并且不播放歌曲时 */
{
TL0 = f_l;//赋初值
TH0 = f_h;//
beep = ~beep; /*蜂鸣器引脚电平取反，定时器每溢出一次电平取反一次，不同的计数初值对应不同的溢出时间，对应不同的方波频率 */
}
}
void timer1() interrupt 3 //定时器1 led灯起落
{
TL1 = 0x00;
TH1 = 0x54;/*定时器1 高8位初值。控制led灯的起落快慢(数值不严格)*/
if(key_play == 1) //不播放歌曲时
{
if(x != 0 && y != 0 && flash < 8 )//最大加到8
++flash;
else if(x == 0 && y == 0 && flash >0 ) //最小减到0
--flash;
P2 = led_table[flash];
}
else if(key_play == 0 ) //播放歌曲时
{
if(out == 1 && flash < 8 && flash < jiepai)/*out ==1 表示有歌曲发声时,(flash<jiepai)使 led灯刚好指示节拍*/
++flash;
else if(out == 0 && flash > 0)
--flash;
P2 = led_table[flash];
}
}
uchar choose()//播放状态下 选歌
{
uchar i = 0; //第i首歌 初值0表示未选歌
uchar j;
x = key_x();
y = key_y();
if(x == 1 && y == 1)
i = 1;//选第一首
else if(x == 1 && y == 2)
i = 2; //选第二首
else if(x == 1 && y == 3)
i = 3;
else if(x == 1 && y == 4)
i = 4;
else if(x == 2 && y == 1)
i = 5;
else if(x == 4 && y == 1)// 上一首
i = 13;
else if(x == 4 && y == 2)//用作暂停播放
i = 14;
else if(x == 4 && y == 3)//下一首
i = 15;
else if(x == 4 && y == 4)
i = 16;//用作停止播放
if(i == song_id)
{
which = 2; //选同一首歌时，重播这首歌
}
else if(i > allsong && i < 13)/*如果按键号 在 最大歌曲序号 和 功能键 之间，返回原歌曲序号*/
i = song_id;//
else if(i == 0) //i等于初值 说明未按键
i = song_id; //不按键选歌时，返回原歌曲的序号
while(1)//释放按键时才进行下一步
{
x = key_x();
y = key_y();
if(x == 1)
j = y;
else if(x == 2)
j = 4 + y;
else if(x == 3)
j = 8 + y;
else if(x == 4)
j = 12 + y;
if(x == 0 || (j > allsong && j < 13)) /*释放按键 或者按键号 在 最大歌曲序号 和 功能键 之间时 跳出循环*/
break;
}
return(i);
}
uchar choose2()/*选歌不用放开按键 在暂停的状态下使用 */
{
uchar i = 0;
x = key_x();
y = key_y();
if(x == 1 && y == 1)//选第一首
i = 1;
else if(x == 1 && y == 2)//选第二首
i = 2;
else if(x == 1 && y == 3)
i = 3;
else if(x == 1 && y == 4)
i = 4;
else if(x == 2 && y == 1)
i = 5;
else if(x == 4 && y == 1)// 上一首
i = 13;
else if(x == 4 && y == 2)//用作暂停播放
i = 14;
else if(x == 4 && y == 3)//下一首
i = 15;
else if(x == 4 && y == 4)
i = 16;//用作停止播放
if(i == song_id)
{
same = 1;
which = 2; /*选了同一首歌时，重播这首歌(0，1用来存曲速了 故从2开始) */
}
else if(i > allsong && i < 13)/*如果按键号 在 最大歌曲序号 和 功能键 之间，返回原歌曲序号*/
i = song_id;
else if(i == 0) //i等于初值 说明未按键
i = song_id; /*不按键选歌时，返回原歌曲的序号*/
return(i);
}
void play()//播放歌曲
{
uint qusu;//歌曲播放速度 （拍/分）
uint pai2; /*pai2 = (2400/qusu)*jiepai; 送到delay（）函数*/
while(1)
{
while(1)
{
choose_id:
temp_id = choose(); //选歌
/****************************↓↓↓↓↓暂停↓↓↓↓↓*****************************************/
if(temp_id == 14) //如果按下暂停键
{
delayms(500);//延时500ms
while(1)
{
temp_id = choose2();/*choose2 按下就起作用 不必等到放开按键才起作用*/
if(temp_id == 14) /*再次按下“暂停键” 表示继续播放*/
{
break;
}
else if(temp_id == 16)/*按下停止键 ，功能表现为：暂停播放时也能停止播放，回到播放前状态*/
{
song_id = 16;
break;
}
else if(temp_id == 13)//上一首
{
which = 2;
if(song_id == 1)
song_id = allsong ;//播放最后一首
else
--song_id;
break;
}
else if(temp_id == 15) //下一首
{
which = 2;
if(song_id == allsong)
song_id = 1; //播放第一首
else
++song_id;
break;
}
else if(temp_id != song_id && temp_id <= allsong)/*选了另一首歌曲 屏蔽掉了未定义的按键*/
{
which = 2; /*从歌曲的第一个音播放 (0，1用来存曲速了 故从2开始)*/
song_id = temp_id;
break;
}
else if(same == 1)
break;
}
same = 0; //跳出循环后 需重置为0
}
/****************************↑↑↑↑↑暂停↑↑↑↑↑***************************************/
else if(temp_id == 13)//上一首
{
which = 2;
if(song_id == 1)
song_id = allsong ;//播放最后一首
else
--song_id;
}
else if(temp_id == 15) //下一首
{
which = 2;
if(song_id == allsong)
song_id = 1; //播放第一首
else
++song_id;
}
else if(temp_id == 16)
{
song_id = 16;
}
else if(temp_id != song_id && temp_id <= allsong) //选了另一首歌曲
{
which = 2; //从歌曲的第一个音播放
song_id = temp_id;
}
/**************************************************************************************/
nochoose://不用选歌 当正常放完一首歌时，跳到这里
if(song_id == 3)
{key_play = 0;
if(srkl[which] == 0xff) /* 遇到结束符 跳出循环（内循环） 停止播放 */
break;
qusu = srkl[0];
yindiao = srkl[which]; //音调
jiepai = srkl[which+1]; //节拍
}
else
if(song_id == 1)
{key_play = 0;
if(ymt[which] == 0xff) /* 遇到结束符 跳出循环（内循环） 停止播放 */
break;
qusu = ymt[0];
yindiao = ymt[which]; //音调
jiepai = ymt[which+1]; //节拍
}
else
if(song_id == 2)
{ key_play = 0;
if(dl[which] == 0xff) /* 遇到结束符 跳出循环 停止播放 */
break;
qusu = dl[0];
yindiao = dl[which]; //
jiepai = dl[which+1]; //
}
else if(song_id == 4)
{
key_play = 0;
if(test[which] == 0xff) /* 遇到结束符 跳出循环 停止播放*/
break;
qusu = test[0];
yindiao = test[which];
jiepai = test[which+1];
}
/******************************************************************************/
else if(song_id == 16 )
{
which = 2;
break;
}
else
{
key_play = 1;
goto choose_id; /*如果既没有选歌 又没有停止 返回去做选择*/
}
/********************************************************************************************/
yindiao_l = yindiao % 16;// 低四位 调
yindiao_h = yindiao /16;/*高四位 。。是低音0 中音1 还是 高音2*/
if(yindiao != 0) /*音调不为0。（当音调为0时表示这个音不响 但依旧要占这个音的播放时间）*/
{
song_h = chuzhi[yindiao*2];
song_l = chuzhi[yindiao*2+1];
TR0 = 1; /*给初值赋值后，开启定时器0 蜂鸣器开始发声 */
TR1 = 1;/*开启定时器1 ,led开始闪动*/
display(); //数码管显示音调
out = 1; /*正在发声的标志，定时器1得以控制led灯按一定的时间间隔 逐个点亮 */
}
else
{
TR0 = 0;
out = 0;
TR1 = 0;
P0 = 0x00;
flash = 0;
P2 = led_table[0];
}
pai2 = (2400/qusu)*jiepai;
delay(pai2); /*延时 = 节拍数 x 125ms (决定着1个音的发声时间) */
TR0 = 0;//蜂鸣器停止发声
P0 = 0x00;
out = 0;
delayms(39); /*唱完一个音停xx ms（决定每个音调之间的时间间隔 根据个人喜好节奏来定 */
TR1 = 0; //led停止闪动
flash = 0;
P2 = led_table[0];
which = which + 2;//下一个音
} /*已经放完一首歌，或者停止播放，接下来判断是停止播放还是播放下一首 */
TR0 = 0;
P0 = 0x00;
out = 0;
flash = 0;
P2 = led_table[0];
if(song_id == 16) /*坐标(4,4)的键盘作为停止播放键*/
{
while(1)
{
x = key_x();
if(x == 0)
break;/*松开按键 才结束 避免触发其他程序 比如电子琴发声、led显示等*/
}
key_play = 1; /*播放键引脚置高电平，播放结束的标志*/
song_id = 1; // 第一首歌开始
which = 2; // 每首歌的最开始的一个音
break; /*跳出第二个循环（即结束play函数）*/
}
else if(song_id == allsong)/*当放到最后一首时，从第一首开始 (当前共3首) */
{
song_id = 1;
which = 2;
delayms(1000); //一秒后从第一首开始播放
goto nochoose;
}
else
{
++song_id; /*歌曲序号自动+1 自动播放下一首歌*/
which = 2;
delayms(1000);
goto nochoose;//不用选歌 播放下一首
}
}
}
void main()
{
P0 = 0x00;
P2 = 0xff;
TMOD = 0x11; /*定时器0 定时器1 都采用方式1（16位定时器方式） */
IE = 0x8a;
PT0 = 1; /*设置定时器0为高优先级，避免被定时器1干扰，造成声音失真*/
while(1)
{
key_check();
if(key_play == 1 && x != 0 && y != 0)
{
TR1 = 1;
display();
speak();
TR0 = 1;
}
else if(key_play == 0)
{
key_play = 0;
play(); /*play函数有循环语句，当按下停止键（16键）时才能跳出 */
}
else
{
if(flash == 0)/*当flash 减到0时 再关闭定时器1，即 让led灯全部熄灭再关闭T1 */
TR1 = 0;
TR0 = 0;
P0 = 0x00;
}
}
}
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