要求一,七的音按键和三个音调选择键,可以选择七的音按键到底是发哪个音调,是高音,中音,还是低音。不工作时可以显示此时是几点几分,工作时也可以显示。三自带音乐,不弹奏时,按一个键可以自己播放简单歌曲,如“祝你生日快乐”
上有好多,要的话我还有流程图
/*********************************************************************************************
程序名: DoToy系列作品 MidTouch21电子琴程序
编写人: 杜洋
编写时间: 2009年6月3日
硬件支持: STC11L60XE 外部12MHZ晶振 电源3V
接口说明: 详见《DoToy_MidTouch21电路原理图》
修改日志:
NO.1-20090603_17.54 完成电子琴21键的测试(20090603_1备)
NO.2-20090604_01.29 改为第二次新板的硬件电路(20090604_2备)
/*********************************************************************************************
说明:
用STC11Fxx单片机I/O接口的高阻态输入功能,扫描I/O接口电平。
手指将VCC线和I/O接口线半连接,产生高电平信号。
/*********************************************************************************************/
void INIT(void);
#include <STC11Fxx.H>
/*********************************************************************************************/
sbit SPEAKER = P1^0;//扬声器,低使能
sbit LED = P3^0;//LED正极,强推
sbit LED2 = P3^1;//LED负极
sbit KEY11 = P2^0;
sbit KEY12 = P2^1;
sbit KEY13 = P2^2;
sbit KEY14 = P2^3;
sbit KEY15 = P2^4;
sbit KEY16 = P2^5;
sbit KEY17 = P2^6;
sbit KEY21 = P2^7;
sbit KEY22 = P4^4;
sbit KEY23 = P4^5;
sbit KEY24 = P4^6;
sbit KEY25 = P0^7;
sbit KEY26 = P0^6;
sbit KEY27 = P0^5;
sbit KEY31 = P0^4;
sbit KEY32 = P0^3;
sbit KEY33 = P0^2;
sbit KEY34 = P0^1;
sbit KEY35 = P0^0;
sbit KEY36 = P3^3;
sbit KEY37 = P3^2;
/*********************************************************************************************/
unsigned char MUSIC;
unsigned char STH0,STL0;
unsigned int code tab[]={ //音阶表
63628,63835,64021,64103,64260,64400,64524, //低音1-7
64580,64684,64777,64820,64898,64968,65030, //中音1-7
65058,65110,65157,65178,65217,65252,65283 //高音1-7
};
/*********************************************************************************************/
void delay1ms (unsigned int a){ // 1ms延时程序(12MHz 10倍于51单片机速度时)
unsigned int i;
while( --a != 0){
for(i = 0; i < 600; i++);
}
}/***************************************************************************************/
void INIT(void){//初始化程序
TMOD=0x11;
ET0=1;
ET1=1;
EA=1;
P0M1 = 0xff;//I/O接口工作方式
P0M0 = 0x00;//P0全为高阻输入
P1M1 = 0xfe;//P1.0为准双向,其他为高阻输入
P1M0 = 0x00;
P2M1 = 0xff;//P2全为高阻输入
P2M0 = 0x00;
P3M1 = 0xfc;//P3.0为强推,其他为标准双向
P3M0 = 0x01;
P4M1 = 0xff;//P4全为高阻输入
P4M0 = 0x00;
P4SW = 0xff;
LED = 1;
LED2 = 0;
SPEAKER = 0;
}
/***************************************************************************************/
void main(void){
INIT(); //初始化
while(1){
if(KEY37 == 1){delay1ms(20);if(KEY37 == 1){MUSIC = 20;}} //高音B(37)
if(KEY36 == 1){delay1ms(20);if(KEY36 == 1){MUSIC = 19;}}
if(KEY35 == 1){delay1ms(20);if(KEY35 == 1){MUSIC = 18;}}
if(KEY34 == 1){delay1ms(20);if(KEY34 == 1){MUSIC = 17;}}
if(KEY33 == 1){delay1ms(20);if(KEY33 == 1){MUSIC = 16;}}
if(KEY32 == 1){delay1ms(20);if(KEY32 == 1){MUSIC = 15;}}
if(KEY31 == 1){delay1ms(20);if(KEY31 == 1){MUSIC = 14;}}
//3
if(KEY27 == 1){delay1ms(20);if(KEY27 == 1){MUSIC = 13;}}
if(KEY26 == 1){delay1ms(20);if(KEY26 == 1){MUSIC = 12;}}
if(KEY25 == 1){delay1ms(20);if(KEY25 == 1){MUSIC = 11;}}
if(KEY24 == 1){delay1ms(20);if(KEY24 == 1){MUSIC = 10;}}
if(KEY23 == 1){delay1ms(20);if(KEY23 == 1){MUSIC = 9;}}
if(KEY22 == 1){delay1ms(20);if(KEY22 == 1){MUSIC = 8;}}
if(KEY21 == 1){delay1ms(20);if(KEY21 == 1){MUSIC = 7;}}
//2
if(KEY17 == 1){delay1ms(20);if(KEY17 == 1){MUSIC = 6;}}
if(KEY16 == 1){delay1ms(20);if(KEY16 == 1){MUSIC = 5;}}
if(KEY15 == 1){delay1ms(20);if(KEY15 == 1){MUSIC = 4;}}
if(KEY14 == 1){delay1ms(20);if(KEY14 == 1){MUSIC = 3;}}
if(KEY13 == 1){delay1ms(20);if(KEY13 == 1){MUSIC = 2;}}
if(KEY12 == 1){delay1ms(20);if(KEY12 == 1){MUSIC = 1;}}
if(KEY11 == 1){delay1ms(20);if(KEY11 == 1){MUSIC = 0;}}
//1
if(MUSIC != 0xff){ //如果有音阶数值(非0XFF时)
STH0=tab[MUSIC]/256; //将音阶的频率值装入定时器T0
STL0=tab[MUSIC]%256;
TR0=1; //启动定时器
MUSIC = 0xff; //清除寄存器
}else{ //否则
SPEAKER = 1; //关扬声器
LED = 1;
TR0=0; //关定时器
}
}
}
/***************************************************************************************/
void t0(void) interrupt 1 using 0{//定时器0产生音频
TH0=STH0;
TL0=STL0;
SPEAKER=~SPEAKER; //取反频率产生音调
LED = SPEAKER; //LED同频闪烁
}
/***************************************************************************************/
/*************************************************************
* 杜洋工作室 www.DoYoung.net
/*************************************************************/
参考资料:www.doyoung.net