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#include "reg52.h"
#include "string.h"
#define uint8 unsigned char
#define uint16 unsigned short int
#define SETMODE 0x38 //16*2顯示,5*7點陣,8位數據接口
#define DISOPEN 0x0C //顯示開,不顯示光標,光標不閃爍
#define DISMODE 0x06 //讀寫字符后地址加1,屏顯不移動
#define SETADDR 0x80 //設置數據地址指針初始值
#define CLEAR 0x01 //清屏,數據指針清零
#define RET 0x02 //回車,數據指針清零
#define PORT P0 //I/O口
sbit RS = P2^6;
sbit RW = P2^5;
sbit E = P2^7;
sbit key_stop = P3^0;//暫停按鍵
sbit key_play = P3^1;//播放
sbit key_next = P3^2;//下一首按鍵
sbit key_last = P3^3;//上一首按鍵
sbit Beep = P1^5;
uint8 code MUSIC1_NAME[]="MUSIC1";
uint8 code MUSIC1_lyric[]="Bells on bob.tail ring";
uint8 code MUSIC2_NAME[]="MUSIC2";
uint8 code MUSIC2_lyric[]="Happy birthday to you!";
uint8 code MUSIC3_NAME[]="MUSIC3";
uint8 code MUSIC3_lyric[]="Two tigers,Two tigers";
uint8 code string_stop[]="now stop................";
uint8 music_cacah=0;//記錄當前音樂曲目
uint8 flag_music = 1;//音樂曲目標志
uint8 flag_stop=1;//音樂播放/暫停標志
unsigned char p,m; //m為頻率常數變量
unsigned char i=0;
unsigned char n=0; //n為節拍常數變量
unsigned char code MUSIC1[] ={0xff,//Jing Bells
0x26,0x20,0x18,0x20,0x19,0x20,0x1c,0x20,0x26,0x40,0x60,0x10,0x26,0x20,
0x26,0x20,0x18,0x20,0x19,0x20,0x1c,0x20,0x24,0x40,0x60,0x10,0x24,0x20,
0x18,0x20,0x19,0x20,0x13,0x20,0x13,0x20,0x13,0x20,0x13,0x20,0x12,0x20,
0x13,0x20,0x15,0x20,0x19,0x20,0x1c,0x20,0x00,
};
unsigned char code MUSIC2[] ={0xff,//happy birthday
0x26,0x20,0x26,0x20,0x24,0x40,0x26,0x40,0x1c,0x40,0x20,0x80,0x26,0x20,
0x26,0x20,0x24,0x40,0x26,0x40,0x19,0x40,0x1c,0x80,0x26,0x20,0x26,0x20,
0x13,0x40,0x18,0x40,0x1c,0x40,0x20,0x40,0x12,0x40,0x15,0x20,0x15,0x20,
0x18,0x40,0x1c,0x40,0x19,0x40,0x18,0x80,0x26,0x20,0x26,0x20,0x18,0x40,
0x1c,0x40,0x19,0x40,0x18,0x80,0x26,0x20,0x26,0x20,0x24,0x80,0x00,
};
unsigned char code MUSIC3[] ={0xff,//Two tigers
0x39,0x40,0x33,0x40,0x30,0x40,0x39,0x40,0x39,0x40,0x33,0x40,0x30,0x40,
0x39,0x40,0x30,0x40,0x2b,0x40,0x26,0x80,0x30,0x40,0x2b,0x40,0x26,0x80,
0x26,0x10,0x24,0x30,0x26,0x10,0x2b,0x30,0x30,0x40,0x39,0x40,0x26,0x10,
0x24,0x30,0x26,0x10,0x24,0x30,0x26,0x10,0x2b,0x30,0x30,0x40,0x39,0x40,
0x39,0x40,0x26,0x40,0x39,0x80,0x39,0x40,0x26,0x40,0x39,0x80,0x00,
};
void Int1Init()
{
TMOD&=0x0f;
TMOD|=0x01;
TH0=0xd8;TL0=0xef;
EA=1;
ET0=1;
}
void delayms (unsigned char m) //控制頻率延時
{
unsigned i=3*m;
while(--i);
}
void delaymsms(unsigned char a) //豪秒延時子程序
{
while(--a);
}
void Write1602_Com(uint8 com)
{
E=0;
RS=0; //命令
delayms(50); //延時
RW=0; //寫
delayms(50);
PORT=com; //端口賦值
delayms(50);
E=1; //高脈沖
delayms(50);
E=0;
}
void Write1602_Dat(uint8 dat)
{
E=0;
RS=1; //數據
delayms(50); //延時
RW=0; //寫
delayms(50);
PORT=dat; //端口賦值
delayms(50);
E=1; //高脈沖
delayms(50);
E=0;
}
void Init1602(void)
{
Write1602_Com(SETMODE); //模式設置
delayms(500);
Write1602_Com(DISOPEN); //顯示設置
delayms(500);
Write1602_Com(DISMODE); //顯示模式
delayms(500);
Write1602_Com(CLEAR); //清屏
delayms(500);
}
void Write1602_Str(uint8 addr,uint8 length,uint8 *pbuf)
{
uint8 i;
Write1602_Com(addr);
for(i=0;i<length;i++)
{
Write1602_Dat(pbuf[i]);
}
}
void scanf()
{
if(key_stop == 0)
{
delaymsms(10);//消抖
flag_stop = 0;
while(key_stop==0);//等待按鍵彈起
}
if(key_next == 0)
{
delaymsms(10);//消抖
flag_stop = 0;
flag_music++;
while(key_next==0);//等待按鍵彈起
}
if(key_last == 0)
{
delaymsms(10);//消抖
flag_stop = 0;
flag_music--;
while(key_last==0);//等待按鍵彈起
}
if(flag_music==0)//1-8循環切歌
flag_music=3;
if(flag_music==4)
flag_music=1;
}
void music_play(uint8 ur[])
{
music_cacah = flag_music;
i = 0;
play:
while(1)
{
a:
if(flag_stop==0)//音樂暫停
{
if(flag_music != music_cacah)//如果播放途中切換了曲目，跳出當前播放
{
flag_stop=1;
break;
}
else
{
Write1602_Str(0x80+0x40,strlen(string_stop),string_stop); //"stoping..."
while(1)//等待音樂播放
{
scanf();
if(key_play==0||flag_music != music_cacah)//按下播放鍵
{
flag_stop=1;
break;
}
}
if(flag_music != music_cacah)//如果暫停途中切換了曲目，跳出當前播放
{
flag_stop=1;
break;
}
}
}
p=ur[i];
if(p==0x00) { i=0, delaymsms(1000); goto play;} //如果碰到結束符,延時1秒,回到開始再來一遍
else if(p==0xff) { i=i+1;delaymsms(100),TR0=0; goto a;} //若碰到休止符,延時100ms,繼續取下一音符
else {m=ur[i++], n=ur[i++];} //取頻率常數和節拍常數
TR0=1; //開定時器1
while(n!=0) Beep=~Beep,delayms(m); //等待節拍完成
TR0=0; //關定時器1
}
}
void main()
{
Int1Init();//定時器中斷1初始化
Init1602(); //初始化1602
Write1602_Str(0x80+0x40,strlen(string_stop),string_stop); //"stop"
while(1)
……………………
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