dianziqin.rar_proteus 电子琴_单片机 电子琴_电子琴proteus_电子琴仿真

#include<KR4x4.h> sbit P3_7=P3^7; uchar t,i=0,TH,TL; uchar FREQ_TH[]={ 0xFC,0xFC,0xFC,0xFD, 0xFD,0xFD,0xFD, 0xFB,0xFC,0xFC,0xFC, 0xFD,0xFD,0xFD}; uchar FREQ_TL[]={ 0x2A,0x95,0xC7,0x22, 0x73,0xBB,0xDC, 0xEF,0x62,0xC7,0xF6, 0x4B,0x98,0xDC}; void speaker(uchar key); void DELAY(unsigned long time); void main() { uchar c; EA=1; while(1) { c=keyscan(); switch(c) { case 0x11: TH=FREQ_TH[0];TL=FREQ_TL[0];speaker(c);break; case 0x21: TH=FREQ_TH[1];TL=FREQ_TL[1];speaker(c);break; case 0x41: TH=FREQ_TH[2];TL=FREQ_TL[2];speaker(c);break; case 0x81: TH=FREQ_TH[3];TL=FREQ_TL[3];speaker(c);break; case 0x12: TH=FREQ_TH[4];TL=FREQ_TL[4];speaker(c);break; case 0x22: TH=FREQ_TH[5];TL=FREQ_TL[5];speaker(c);break; case 0x42: TH=FREQ_TH[6];TL=FREQ_TL[6];speaker(c);break; case 0x82: break; case 0x14: TH=FREQ_TH[7];TL=FREQ_TL[7];speaker(c);break; case 0x24: TH=FREQ_TH[8];TL=FREQ_TL[8];speaker(c);break; case 0x44: TH=FREQ_TH[9];TL=FREQ_TL[9];speaker(c);break; case 0x84: TH=FREQ_TH[10];TL=FREQ_TL[10];speaker(c);break; case 0x18: TH=FREQ_TH[11];TL=FREQ_TL[11];speaker(c);break; case 0x28: TH=FREQ_TH[12];TL=FREQ_TL[12];speaker(c);break; case 0x48: TH=FREQ_TH[13];TL=FREQ_TL[13];speaker(c);break; case 0x88: break; default: break; } } } void speaker(uchar key) { uchar b; ET1=1; EA=1; TMOD=0x10; TR1=1; b=keyscan(); while(b==key) { DELAY(2); b=keyscan(); } P3_7=1; TR1=0; } void timer1() interrupt 3 using 1 { TL1=TL; TH1=TH; P3_7=~P3_7; } void DELAY(unsigned long time) { unsigned long n; for(n=0;n<500*time;n++); }