呼叫系统.zip

#include<at89x52.h> #include<intrins.h> #define uint unsigned int #define uchar unsigned char #define out0 P0 sbit RS_1602=P1^0; sbit WR_1602=P1^1; sbit E_1602=P1^2; sbit feng=P1^7; uchar code number[]={"0123456789"}; uchar jianzhi; uchar code key[][4]={ 0,1,2,3, 4,5,6,7, 8,9,10,11, 12,13,14,15, }; void delayms(uint x) { uchar i; while(x--) for(i=0;i<123;i++); } void busy() { uchar mang; E_1602=0; RS_1602=0; WR_1602=1; do { out0=0xff; E_1602=1; _nop_(); mang=out0; E_1602=0; }while(mang & 0x80); } void writeData(uchar x) { busy(); out0=x; _nop_(); RS_1602=1; WR_1602=0; E_1602=1; _nop_(); E_1602=0; WR_1602=1; } uchar key_get() { uchar j,k; for(j=0;j<4;j++) { P1=_crol_(0xfe,j); for(k=0;k<4;k++) { if((P1 & _crol_(0x10,k))==0)return key[j][k]; } } return 0xff; } void writeOrder(uchar x) { busy(); out0=x; _nop_(); RS_1602=0; WR_1602=0; E_1602=1; _nop_(); E_1602=0; WR_1602=1; } void init1602() { writeOrder(0x38); delayms(5); writeOrder(0x38); delayms(5); writeOrder(0x38); writeOrder(0x08); writeOrder(0x01); writeOrder(0x06); writeOrder(0x0c); } void writeByte(uchar x,y,dod) { x&=0x01; y&=0x0f; if(x==1) y|=0x40; y|=0x80; writeOrder(y); writeData(dod); } void writeString(uchar x,y,uchar code*P) { uchar i=0; x&=0x01; y&=0x0f; if(x==1) y|=0x40; y|=0x80; writeOrder(y); while(P[i]>0) writeData(P[i++]); } void main() { init1602(); while(1) { jianzhi=key_get(); if(jianzhi==0) { init1602(); writeString(0,2,"0"); feng=0; delayms(9); feng=1; } if(jianzhi==1) { init1602(); writeString(0,2,"1"); feng=0; delayms(9); feng=1; } if(jianzhi==2) { init1602(); writeString(0,2,"2"); feng=0; delayms(9); feng=1; } if(jianzhi==3) { init1602(); writeString(0,2,"3"); feng=0; delayms(9); feng=1; } if(jianzhi==4) { init1602(); writeString(0,2,"4"); feng=0; delayms(9); feng=1; } if(jianzhi==5) { init1602(); writeString(0,2,"5"); feng=0; delayms(9); feng=1; } if(jianzhi==6) { init1602(); writeString(0,2,"6"); feng=0; delayms(9); feng=1; } if(jianzhi==7) { init1602(); writeString(0,2,"7"); feng=0; delayms(9); feng=1; } if(jianzhi==8) { init1602(); writeString(0,2,"8"); feng=0; delayms(9); feng=1; } if(jianzhi==9) { init1602(); writeString(0,2,"9"); feng=0; delayms(9); feng=1; } if(jianzhi==10) { init1602(); writeString(0,2,"10"); feng=0; delayms(9); feng=1; } if(jianzhi==11) { init1602(); writeString(0,2,"11"); feng=0; delayms(9); feng=1; } if(jianzhi==12) { init1602(); writeString(0,2,"12"); feng=0; delayms(9); feng=1; } if(jianzhi==13) { init1602(); writeString(0,2,"13"); feng=0; delayms(9); feng=1; } if(jianzhi==14) { init1602(); writeString(0,2,"14"); feng=0; delayms(9); feng=1; } if(jianzhi==15) { init1602(); writeString(0,2,"15"); feng=0; delayms(9); feng=1; } if(jianzhi==16) { init1602(); writeString(0,2,"16"); feng=0; delayms(9); feng=1; } } }