單片機(jī)電子琴程序(c語言)

1、/電子琴+歌曲（世上只有媽媽好）#include#define uchar unsigned charsbit p10=p10;/蜂鳴器接口sbit p30=p30;/歌曲模式轉(zhuǎn)換端口uchar timer0h,timer0l,time;/t1定時(shí)器高八位，低八位初值;/音階頻率表高八位code uchar fh= 0xf2,0xf3,0xf5,0xf5,0xf6,0xf7,0xf8, /低音 0xf9,0xf9,0xfa,0xfa,0xfb,0xfb,0xfc,0xfc, /中音1,2,3,4,5,6,7,8,1（高） 0xfc,0xfd,0xfd,0xfd,0xfd,0xfe,/高音 0x

2、fe,0xfe,0xfe,0xfe,0xfe,0xfe,0xff,/超高音 ; /音階頻率表低八位code uchar fl= 0x42,0xc1,0x17,0xb6,0xd0,0xd1,0xb6,/低音 0x21,0xe1,0x8c,0xd8,0x68,0xe9,0x5b,0x8f, /中音1,2,3,4,5,6,7,8,1（高） 0xee,0x44, 0x6b,0xb4,0xf4,0x2d,/ 高音 0x47,0x77,0xa2,0xb6,0xda,0xfa,0x16,/超高音 ;/世上只有媽媽好數(shù)據(jù)表code uchar sszymmh= 6,2,3,5,2,1,3,2,2,5,2,2,

3、1,3,2,6,2,1,5,2,1, 6,2,4,3,2,2,5,2,1,6,2,1,5,2,2,3,2,2,1,2,1, 6,1,1,5,2,1,3,2,1,2,2,4,2,2,3,3,2,1,5,2,2,/每三個(gè)數(shù)字代表一個(gè)音符，第一個(gè)代表音階，第二個(gè)代表高音中音或低音， 5,2,1,6,2,1,3,2,2,2,2,2,1,2,4,5,2,3,3,2,1,/第三個(gè)代表節(jié)拍（音階的長(zhǎng)度） 2,2,1,1,2,1,6,1,1,1,2,1,5,1,6,0,0,0 ;uchar keymode= 0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f /鍵模 ; unsig

4、ned char k1,k2;/t0定時(shí)器高八位，低八位初值void delay(unsigned char time);/延時(shí)子函數(shù)void keyscan();/鍵值查詢函數(shù)void gequ();/歌曲處理函數(shù)/*void main(void) tmod=0x11;/初始化 ea=1; et0=1; et1=1; th0=k1; tl0=k2; while(1) keyscan();if(p30=0)/當(dāng)鍵按下后播放歌曲gequ(); /*void keyscan() /鍵值查詢函數(shù)int i;p2=0xff;if(p2!=0xff) for(i=0;i8;i+) while(p2=ke

5、ymodei) k1=fhi+7;/鍵音為中音中音時(shí)的計(jì)數(shù)初值 k2=fli+7; tr0=1;/當(dāng)有鍵按下開定時(shí)器t0 else tr0=0;/無鍵按下等待按鍵按下if(i=8)i=0;tr0=0;/當(dāng)執(zhí)行一次無按鍵按下時(shí)置零/* void delay(uchar t) / 延時(shí)函數(shù) uchar t1;unsigned long t2;for(t1=0;t1t;t1+)for(t2=0;t28000;t2+);tr1=0;/計(jì)時(shí)到關(guān)閉t1定時(shí)器/*void gequ() /歌曲處理函數(shù)uchar a=0;uchar s; while(a100) if(p2!=0xff) break; /當(dāng)歌曲播放時(shí)有鍵按下跳出播放執(zhí)行鍵音 s=sszymmha+7*sszymmha+1-1; timer0h=fhs; timer0l=fls; time=sszymmha+2; a=a+3;/每執(zhí)行該一個(gè)音符歌曲數(shù)據(jù)表跳過三個(gè)數(shù)據(jù) th1=timer0h; tl1=timer0l; tr1=1; delay(time);/*void time0() interrupt 1 /定時(shí)器t0中斷函數(shù) p10=!p10; th0=k1;/重新裝t0計(jì)數(shù)初值 t