电子琴.docx

1、电子琴#include #ifndef _led1602_h #define _led1602_h #define uchar unsigned char #define uint unsigned int /定义接口 #define LCD_dat P1 sbit RS=P33; sbit RW=P32; sbit E=P31; void LcdWriteCommand( uchar CMD,uchar AttribC ); void delay(uchar j) uchar n; for(j;j0;j-) for(n=248;n0;n-) /delay500us void delay5ms

2、() unsigned int i; for (i=0;i1000;i+) ; delay1() /按键防止连续显示 int i,j,k; for(i=0;i20;i+) for(j=0;j20;j+) for(k=0;k0;i-) for (j=0;j0;i-) for(j=200;j0;j-); temp=P2; temp=temp & 0x0f; if (temp!=0x0f) temp=P2; temp=temp & 0x0f; switch(temp) case 0x0e: key=0; writestring(5,1,clr ); break; case 0x0d: key=1;

3、break; case 0x0b: key=2; writestring(1,1,si zhong ); break; case 0x07: key=3; writestring(1,1,la zhong ); break; temp=P2; if(key!=1) P0=tablekey; STH0=tabkey/256; STL0=tabkey%256; TR1=1; tabetimerkeycont=tcont; /开始按键时间 tabekeykeycont=tabkey; temp=temp & 0x0f; while(temp!=0x0f) temp=P2; temp=temp & 0

4、x0f; TR1=0; /按键放开音乐停止 if(key=0) TR1=0; tcont=0; flagplay=0; writestring(5,1, ); for(clr=0;clr0;i-) for(j=200;j0;j-); temp=P2; temp=temp & 0x0f; if (temp!=0x0f) temp=P2; temp=temp & 0x0f; switch(temp) case 0x0e: key=4; writestring(1,1,so zhong ); break; case 0x0d: key=5; writestring(1,1,fa zhong ); b

5、reak; case 0x0b: key=6; writestring(1,1,me zhong ); break; case 0x07: key=7; writestring(1,1,re zhong ); break; temp=P2; P0=tablekey; STH0=tabkey/256; STL0=tabkey%256; tabetimerkeycont=tcont; /开始按键时间 TR1=1; temp=temp & 0x0f; while(temp!=0x0f) temp=P2; temp=temp & 0x0f; TR1=0; writestring(1,1, ); tab

6、ekeykeycont=tabkey; stoptimerkeycont=tcont; /结束按键时间 keycont+; / P2=0xff; P2_6=0; temp=P2; temp=temp & 0x0f; if (temp!=0x0f) for(i=50;i0;i-) for(j=200;j0;j-); temp=P2; temp=temp & 0x0f; if (temp!=0x0f) temp=P2; temp=temp & 0x0f; switch(temp) case 0x0e: key=8; writestring(1,1,do zhong ); break; case 0

7、x0d: key=9; writestring(1,1,si di ); break; case 0x0b: key=10; writestring(1,1,la di ); break; case 0x07: key=11; writestring(1,1,so di ); break; temp=P2; P0=tablekey; tabekeykeycont=tabkey; STH0=tabkey/256; STL0=tabkey%256; TR1=1; tabetimerkeycont=tcont; /开始按键时间 temp=temp & 0x0f; while(temp!=0x0f)

8、temp=P2; temp=temp & 0x0f; TR1=0; writestring(1,1, ); stoptimerkeycont=tcont; /结束按键时间 keycont+; P2=0xff; P2_7=0; temp=P2; temp=temp & 0x0f; if (temp!=0x0f) for(i=50;i0;i-) for(j=200;j0;j-); temp=P2; temp=temp & 0x0f; if (temp!=0x0f) temp=P2; temp=temp & 0x0f; switch(temp) case 0x0e: key=12; writestr

9、ing(1,1,fa di ); break; case 0x0d: key=13; writestring(1,1,me di ); break; case 0x0b: key=14; writestring(1,1,re di ); break; case 0x07: key=15; writestring(1,1,do di ); break; temp=P2; P1_0=P1_0; P0=tablekey; tabekeykeycont=tabkey; STH0=tabkey/256; STL0=tabkey%256; tabetimerkeycont=tcont; /开始按键时间 T

10、R1=1; temp=temp & 0x0f; while(temp!=0x0f) temp=P2; temp=temp & 0x0f; TR1=0; writestring(1,1, ); stoptimerkeycont=tcont; /结束按键时间 keycont+; /void timer0(void) interrupt 1 TH0=0xfc; TL0=0x18; toper+; if(toper=5) toper=0; P3_7=P3_7; tcont+; if(tcont=65535) writestring(1,1, ); if(flagplay=1) if(tcont=tabetimert) /用来判断播放时间是否到了前面的按键时间 /for(t=0;t=keycont;t+) STH0=tabekeyt/256; STL0=tabekeyt%256; TR1=1; /delay(255); /TR1=0; if(tcont=stoptimert) t+; TR1=0; /第t个按键时间到 if(t=keycont) t=0; /播放完毕等待下次按键播放 tcont=0; TR0=0; /void timer1(void) interrupt 3 TH1=STH0; TL1=STL0; P3_4=P3_4; TR0=1; /当有键按下的时候定时器一开始记按键时间