基于51单片机多功能音乐播放器的设计.doc

学习情境1 多功能音乐播放器的设计江西环境工程职业学院机械与电子学院 一、 引言二、 设计任务与设计原理1、 设计任务（1）可播放多首音乐，且通过按键来选择播放的音乐（2）选择音乐时，音乐名称在LCD上显示（3）音乐播放种类跨度要大一些，播放声音要清晰2、 设计原理三、 硬件电路设计1 系统框图图2-1-1 系统框图2 电路原理图(1)、单片机最小系统电路，主要由：时钟振荡电路、复位电路、电源电路等组成。图2-1-2 单片机最小系统电路(2)、矩阵键盘输入电路图2-1-3 矩阵键盘输入电路(3)、LCD12864显示电路图2-1-4 LCD12864显示电路(4)、蜂鸣器播放电路图2-1-5 蜂鸣器播放电路3 整体电路原理图图2-1-6 系统仿真效果图四、 软件设计1、 流程图设计2、 完整程序代码整个KEIL工程文件有4个.C文件和1个头文件组成，具体代码如下：（1）PlayMusic.c#include #include SoundPlay.h#include#define uchar unsigned char#define uint unsigned intsbit WAI_INT0=P32; / 复位/水平与垂直偏移uchar H_Offset=0;/uchar V_page_Offset=0;extern uchar Key_Num;extern uchar code Name_Of_Song;extern uchar KeyScan();/ 矩阵键盘扫描子程序 extern void LCD12864_Initialization();extern void Display_Word(uchar P2,uchar L2,uchar *M) reentrant;extern void Display_char(uchar P1,uchar L1,uchar *M) reentrant;void delay(uint K); /延时子程序void key_process();/ 矩阵键盘按键处理子程序void Delay1ms(uint count)unsigned int i,j;for(i=0;icount;i+)for(j=0;j0;i-) for(j=120;j0;j-);/*-按键处理子程序-*/void key_process()EA=1;KeyScan();switch(Key_Num) case 13: delay(200); if (Key_Num=13) /以下显示歌曲名：挥着翅膀的女孩 Display_Word(V_page_Offset+2,H_Offset,Name_Of_Song+0*32); Display_Word(V_page_Offset+2,16+H_Offset,Name_Of_Song+1*32); Display_Word(V_page_Offset+2,32+H_Offset,Name_Of_Song+2*32); Display_Word(V_page_Offset+2,48+H_Offset,Name_Of_Song+3*32); Display_Word(V_page_Offset+2,64+H_Offset,Name_Of_Song+4*32);Display_Word(V_page_Offset+2,80+H_Offset,Name_Of_Song+5*32); Display_Word(V_page_Offset+2,96+H_Offset,Name_Of_Song+6*32);Play(Music_Girl,0,2,360); break; case 2: delay(200); if (Key_Num=2) /以下显示歌曲名：同一首歌Display_Word(V_page_Offset+2,H_Offset,Name_Of_Song+24*32); Display_Word(V_page_Offset+2,16+H_Offset,Name_Of_Song+7*32);Display_Word(V_page_Offset+2,32+H_Offset,Name_Of_Song+8*32);Display_Word(V_page_Offset+2,48+H_Offset,Name_Of_Song+9*32);Display_Word(V_page_Offset+2,64+H_Offset,Name_Of_Song+10*32);Display_Word(V_page_Offset+2,80+H_Offset,Name_Of_Song+24*32);Display_Word(V_page_Offset+2,96+H_Offset,Name_Of_Song+24*32); Play(Music_Same,2,2,500); /break; case 1: delay(200); if (Key_Num=1) /以下显示歌曲名：两只蝴蝶Display_Word(V_page_Offset+2,H_Offset,Name_Of_Song+24*32);Display_Word(V_page_Offset+2,16+H_Offset,Name_Of_Song+11*32);Display_Word(V_page_Offset+2,32+H_Offset,Name_Of_Song+12*32);Display_Word(V_page_Offset+2,48+H_Offset,Name_Of_Song+13*32);Display_Word(V_page_Offset+2,64+H_Offset,Name_Of_Song+14*32);Display_Word(V_page_Offset+2,80+H_Offset,Name_Of_Song+24*32);Display_Word(V_page_Offset+2,96+H_Offset,Name_Of_Song+24*32); Play(Music_Two,0,2,360); / break; case 5: delay(200); if (Key_Num=5) /以下显示歌曲名：死了都要爱 Display_Word(V_page_Offset+2,H_Offset,Name_Of_Song+24*32);Display_Word(V_page_Offset+2,16+H_Offset,Name_Of_Song+25*32);Display_Word(V_page_Offset+2,32+H_Offset,Name_Of_Song+26*32);Display_Word(V_page_Offset+2,48+H_Offset,Name_Of_Song+27*32);Display_Word(V_page_Offset+2,64+H_Offset,Name_Of_Song+28*32);Display_Word(V_page_Offset+2,80+H_Offset,Name_Of_Song+29*32);Display_Word(V_page_Offset+2,96+H_Offset,Name_Of_Song+24*32);Play(Music_Three,10,1,300); break; /* case 5: delay(200); if (Key_Num=5) Play(Music_Three,0,2,360); break; */ void waibuzhongduan_INT0()interrupt 0 uchar i; EA=0; for(i=0;i8;i+) Display_Word(V_page_Offset+2,i*16+H_Offset,Name_Of_Song+24*32); （2）Keypad.c#include #define uchar unsigned char#define uint unsigned int/扫描键盘时发送到0-3列上的扫描码uchar KeyboardScanCode4=0xef,0xdf,0xbf,0x7f;uchar Key_Num=16;/-/扫描键盘并返回按键在键盘上的位置系列号/-uchar KeyScan() uchar Row=0,Col=0,Temp; for(Col=0;Col4;Col+) P1=KeyboardScanCodeCol;Temp=P1&0x0f;if(Temp!=0x0f) switch(Temp) case 0x0e:Row=0;break; case 0x0d:Row=1;break; case 0x0b:Row=2;break; case 0x07:Row=3;break; break; P1=0x0f; return Key_Num=Row*4+Col;/返回按键位置序号0-15(3) 12864显示驱动程序.C/-LCD_12864.c-/名称 ：12864LCD显示驱动程序（不带字库）/-#include #include #define uchar unsigned char#define uint unsigned int#define LCD_DB_PORT P0 / 液晶数据线端口DB0-DB7#define LCD_START_ROW 0xc0 /起始行命令#define LCD_PAGE 0xB8 / 页指令#define LCD_COL 0x40 / 列指令bit Reverse_Display=0;/是否反相显示（白底黑字/黑底白字）/液晶引脚定义sbit DI=P20;sbit RW=P21;sbit E=P22;sbit CS1=P23;sbit CS2=P24;sbit RST=P25;/-/检查LCD是否忙/-bit LCD_IS_BUSY() LCD_DB_PORT=0xFF;RW=1;_nop_();DI=0;E=1;_nop_();E=0;return (bit)(P0&0x80);/-/向LCD写入一个字节（一般用于发送命令）/-void Write_Byte_To_LCD(uchar comand) while(LCD_IS_BUSY(); LCD_DB_PORT=0xFF; RW=0; _nop_(); DI=0; LCD_DB_PORT=comand; E=1; _nop_(); E=0;/-/向LCD写入数据/- void Write_Data_To_LCD(uchar dat) while(LCD_IS_BUSY(); LCD_DB_PORT=0xFF; RW=0; _nop_(); DI=1; if(!Reverse_Display) /根据Reverse_Display决定是否反相显示 LCD_DB_PORT=dat; else LCD_DB_PORT=dat; E=1; _nop_(); E=0;/-/初始化LCD/-void LCD12864_Initialization() CS1=1; CS2=1; Write_Byte_To_LCD(0x38); Write_Byte_To_LCD(0x3F); Write_Byte_To_LCD(0x01); Write_Byte_To_LCD(0x06); Write_Byte_To_LCD(LCD_START_ROW);/-/通用显示函数 从第P页第L列显示W个字节数据，具体显示的数据在r所指的数组中/- void LCD_Show(uchar P,uchar L,uchar W,uchar *r) reentrant uchar i;if(L64) CS1=1; CS2=0;Write_Byte_To_LCD(LCD_PAGE+P);Write_Byte_To_LCD(LCD_COL+L);if(L+W