AVR单片机模拟电子琴.docx

AVR单片机模拟电子琴.docx

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AVR单片机模拟电子琴

附一：

#include"config.h"

//决定是否播放,全局变量

/////////uint16*p;//歌曲选择指针

uint8list=0;//歌曲选择变量

uint8input=1;

uint8pause=1;

uint8state=0,stop=1,play=1,key;

uint8MUSIC_DATA[50][2];

uint8i=0,length=50,key_buffer;//i歌曲播放指针

//671235671

flashuint16Mode_Data[16]={440,494,523,587,659,698,784,

880,998,1046,1156,1318,1396,1568,0};//存放声音的频率

/***********************************

*音乐产生函数*

*功能：

输出频率为x的方波，延时yMS*

*范围：

x:

100-20000Hz，0：

不发声*

*y:

0-65536MS*

***********************************/

externvoidsound（uint16i）

{

//uint16x;

//x=music_data[i][0];//取音乐的频率数据

if（i!

=0）

{

//x=;//1M时钟数据计算

OCR1A=500000/i;//比较值赋值

TCCR1A=0x40;//允许比较反转输出

}

else

{

TCCR1A=0x00;//频率为0，休止符，不发声

}

}

/************************************

*延时函数：

1M时钟时为MS*

************************************/

externvoiddelay_ms（uint16i）

{

uint8a;

for（;i;i--）

{

for（a=220;a;a--）//倍率原来220

{;}}

}

flashuint16kaqiusha[][2]=

{

{440,600},{494,200},{523,600},{443,200},{523,400},{494,200},

{440,200},{494,400},{330,400},{494,600},{523,200},{578,600},

{494,200},{578,400},{523,200},{494,200},{440,800},{659,400},

{880,400},{784,400},{880,200},{784,200},{698,400},{659,200},

{578,200},{659,400},{440,400},{0,200},{698,400},{578,200},

{659,600},{523,200},{494,200},{330,200},{523,200},{494,200},

{440,800},{659,400},{880,400},{784,400},{880,200},{784,200},

{698,400},{659,200},{578,200},{659,400},{440,400},{0,200},

{698,400},{578,200},{659,600},{523,200},{494,200},{330,200},

{523,200},{494,200},{440,800},{0,0}

};

voidkaqiusha_sing（void）

{

sound（kaqiusha[i][0]）;//输出音符

//PORTA=seg7_data（i%16）;

delay_ms（kaqiusha[i][1]）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

kaqiusha[++i][1]）//准备一下个音符

{

i=0;

play=0;

pause=1;

input=0;

if（（++list）>5）

{list=0;};

}

}

flashuint16moscow_night[][2]=

{

{440,400},{523,400},{659,400},{523,400},

{587,800},{523,400},{494,400},{659,800},

{587,800},{440,1600},{523,400},{659,400},

{784,400},{784,400},{880,800},{784,400},

{698,400},{659,1600},{740,800},{831,800},

{988,400},{880,400},{659,1200},{494,800},{440,400},

{659,400},{587,400},{698,1600},{784,400},

{698,400},{659,800},{587,400},{523,400},{659,800},

{587,800},{440,1600},{740,800},{831,800},

{988,400},{880,400},{659,1200},{494,800},{440,400},

{659,400},{587,400},{698,1600},{784,400},

{698,400},{659,800},{587,400},{523,400},{659,800},

{587,800},{440,3200},{0,0}

};

voidmoscow_night_sing（void）

{

sound（moscow_night[i][0]）;//输出音符

//PORTA=seg7_data（i%16）;

delay_ms（moscow_night[i][1]）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

moscow_night[++i][1]）//准备一下个音符

{

i=0;

play=0;

pause=1;

input=0;

if（（++list）>5）

{list=0;};

}

}

flashuint16super_mario[][2]=

{

{659,200},{659,200},{0,200},{659,200},

{0,200},{523,200},{659,200},{0,200},

{784,400},{0,400},{392,400},{0,400},

{523,200},{0,400},{392,400},{0,400},

{330,200},{0,400},{440,200},{0,200},

{494,200},{0,200},{466,200},{440,200},{0,200},

{392,266},{659,266},{784,266},{880,200},

{0,200},{698,200},{784,200},{0,200},

{659,200},{0,200},{523,200},{587,200},

{494,200},{0,400},{523,200},{0,400},{392,400},{0,400},

{330,200},{0,400},{440,200},{0,200},

{494,200},{0,200},{466,200},{440,200},{0,200},

{392,266},{659,266},{784,266},{880,200},

{0,200},{698,200},{784,200},{0,200},

{659,200},{0,200},{523,200},{587,200},

{494,200},{0,800},{784,200},{740,200},

{698,200},{622,200},{0,200},{659,200},{0,200},

{415,200},{440,200},{523,200},{0,200},

{440,200},{523,200},{587,200},{0,400},

{784,200},{740,200},{698,200},{622,200},{0,200},

{659,200},{0,200},{1047,200},{0,200},{1047,200},{1047,200},

{0,800},{784,200},{740,200},

{698,200},{622,200},{0,200},{659,200},{0,200},

{415,200},{440,200},{523,200},{0,200},

{440,200},{523,200},{587,200},{0,200},{622,200},{0,400},{587,200},

{0,400},{523,200},{0,600},{392,200},{392,200},{0,200},{262,200},{0,400},

{784,200},{740,200},

{698,200},{622,200},{0,200},{659,200},{0,200},

{415,200},{440,200},{523,200},{0,200},

{440,200},{523,200},{587,200},{0,400},

{784,200},{740,200},{698,200},{622,200},{0,200},

{659,200},{0,200},{1047,200},{0,200},{1047,200},{1047,200},

{0,800},{784,200},{740,200},

{698,200},{622,200},{0,200},{659,200},{0,200},

{415,200},{440,200},{523,200},{0,200},

{440,200},{523,200},{587,200},{0,200},{622,200},{0,400},{587,200},

{0,400},{523,200},{0,600},{392,200},{392,200},{0,200},{262,200},{0,400},{0,0}

};//supermario

voidsuper_mario_sing（void）

{

sound（super_mario[i][0]）;//输出音符

//PORTA=seg7_data（i%16）;

delay_ms（super_mario[i][1]）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

super_mario[++i][1]）//准备一下个音符

{

i=0;

play=0;

pause=1;

input=0;

if（（++list）>5）

{list=0;};

}

}

flashuint16butterfly_lovers[][2]=

{

{247,800},{294,600},{330,200},{392,600},

{440,200},{330,200},{392,200},{294,200},

{0,200},{587,600},{784,200},{659,200},

{587,200},{494,200},{587,200},{440,1400},

{0,200},{440,400},{440,200},{494,200},

{370,400},{330,400},{294,600},{330,200},{392,400},

{440,400},{247,400},{392,400},{330,200},

{294,200},{330,200},{392,200},{294,1400},{0,200},

{494,600},{587,200},{370,400},{440,400},

{330,200},{392,200},{294,1200},{247,300},{294,100},

{247,400},{294,300},{330,100},{370,200},

{440,200},{330,1200},{294,200},{330,200},{392,600},

{440,200},{587,400},{494,400},{440,400},{494,200},

{440,200},{392,400},{330,200},{294,200},

{247,400},{0,400},{392,400},{0,400},{330,300},

{392,100},{330,200},{294,200},{247,200},{294,200},

{330,200},{392,200},{294,1400},

{0,0}

};///梁祝歌曲

voidbutterfly_lovers_sing（void）

{

sound（butterfly_lovers[i][0]）;//输出音符

//PORTA=seg7_data（i%16）;

delay_ms（butterfly_lovers[i][1]）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

butterfly_lovers[++i][1]）//准备一下个音符

{

i=0;

play=0;

pause=1;

input=0;

if（（++list）>5）

{list=0;};

}

}

flashuint16Sdu_Song[][2]=

{

{698,300},{698,100},{698,200},{698,200},

{698,200},{698,200},{659,200},{587,200},

{587,200},{523,1000},{349,400},{440,400},

{523,400},{523,200},{466,400},{440,200},

{466,400},{440,400},{392,800},{392,300},

{392,100},{392,200},{392,200},{392,200},{370,200},

{392,200},{440,200},{466,200},{523,200},

{587,200},{659,200},{698,200},{784,600},{880,600},

{784,200},{784,200},{523,600},{698,1600},{0,0}

};//songofSDU

voidSdu_Song_sing（void）

{

sound（butterfly_lovers[i][0]）;//输出音符

//PORTA=seg7_data（i%16）;

delay_ms（Sdu_Song[i][1]）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

Sdu_Song[++i][1]）//准备一下个音符

{

i=0;

play=0;

pause=1;

input=0;

if（（++list）>5）

{list=0;};

}

}

flashuint16music_data[][2]=

{

{440,400},{440,400},{659,400},{659,400},{740,400},{740,400},{659,800},

{587,400},{587,400},{554,400},{554,400},{494,400},{494,400},{440,800},

{659,400},{659,400},{587,400},{587,400},{554,400},{554,400},{497,800},

{659,400},{659,400},{587,400},{587,400},{554,400},{554,400},{497,800},

{440,400},{440,400},{659,400},{659,400},{740,400},{740,400},{659,800},

{587,400},{587,400},{554,400},{554,400},{494,400},{494,400},{440,800},

{0,0}

};//////abcdefg

voidmusic_data_sing（void）

{

sound（music_data[i][0]）;//输出音符

//PORTA=seg7_data（i%16）;

delay_ms（music_data[i][1]）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

music_data[++i][1]）//准备一下个音符

{

i=0;

play=0;

pause=1;

input=0;

if（（++list）>5）

{list=0;};

}

}

/************************************

*端口初始化函数*

************************************/

voidport_init（void）

{

DDRD|=0xa0;//D5口配置为输出，驱动蜂鸣器

PORTD|=0x0f;

DDRB=0xf0;

PORTB=0X0F;

DDRA=0xff;

Seg7_Led_Init（）;

MCUCR=0x00;

GICR=0x40;

SEI（）;

}

/*********************************

name：

list_deal（）;

function:

dealwithmanysongsofthemachine

**********************************/

externvoidlist_deal（void）

{

switch（list）

{

case0:

butterfly_lovers_sing（）;break;

case1:

moscow_night_sing（）;break;

case2:

Sdu_Song_sing（）;break;

case3:

super_mario_sing（）;break;

case4:

kaqiusha_sing（）;break;

case5:

music_data_sing（）;break;

}

}

/*********************************

name：

key_deal（）;

function:

dealwithstatesofthemachine

**********************************/

externvoidkey_deal（void）

{

if（state==0）//播放状态

{

while（play&&pause）

{

list_deal（）;

/*sound（music_data[i][0]）;//输出音符

delay_ms（music_data[i][1]）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

music_data[i++][1]）

{

i=0;

}

*///调试用

}//播放选择的音乐

}//播放mode

else

{

while（play&&pause&&（~input））

{

sound（Mode_Data[MUSIC_DATA[i][0]]）;//输出音符

PORTA=seg7_data（i%16）;

delay_ms（400）;//节拍延时

TCCR1A=0x00;//奏完一个音符停止

PORTD|=1<<5;

if（!

MUSIC_DATA[++i][1]）//准备一下个音符

{

i=0;

play=0;

pause=1;

input=0;

}

}//播放选择的音乐

}//输入mode

}

/**************************************

handlekeyin;

PROBLEMS:

**************************************/

#pragmainterrupt_handlerint0_isr:

2

voidint0_isr（void）

{

TCCR1A=0x00;//关计时器减少干扰，只有再打开才会响

GICR&=~0x40;//关中断

key=key_scan（）;//externalinteruptonINT0

if（key）

{

if（!

state）//播放状态

{

Seg7_Bit0_En（）;

switch（key）

{

casePAUSE:

{pause=0;break;};

casePLAY:

{play=1;pause=1;break;};

caseSTOP:

{play=0;i=0;break;};

caseRST:

{if（~play）{state=1;input=1;break;};i=0,play=0,pause=1;break;};

caseADVANCE:

if（play==1）

{if（（i+2）>length）break;elsei+=2;break;};

if（!

play）

{if（++list>5）list=0;break;};

caseBACK:

if（play==1）

{if（i<2）{i=0;break;}elsei-=2;break;};

if（!

play）

{if（--list<0）list=5;break;};

default:

break;

};

Seg7_Data_Port=seg7_data（i）;

}

elseif（state）

{

if（（key<=8）&&input）

{

add（key）;

MUSIC_DATA[i++][0]=key;

MUSIC_DATA[i-1][1]=400;

sound（Mode_Data[key]）;

delay_ms（200）;