LCD按键显示51单片机程序设计.doc

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1、#include#include#include#defineuintunsignedint#defineucharunsignedcharsbitlcdrs=P2^2;sbitlcdrw=P2^3;sbitlcde=P2^4;ucharnum,key;inti,length1,length2,length3;ucharsting1[]={"0903010"};ucharsting2[]={"hello"};ucharsting3[]={"

2、happy"};uchargetkey(void);voiddelayms(ucharj);voiddelay1ms(uinttime);voidlcdinit(void);voidlcdsendc(ucharc);voidlcdsendd(ucharc);voidlcdbusy(void);voidjumpkey(uchark);voiddelayms(ucharj){ucharn,m;for(n=0;n

3、y1ms(100);lcde=0;lcdrs=1;lcdrw=1;lcdsendc(0x01);delay1ms(200);delay1ms(300);lcdsendc(0x3c);delay1ms(300);lcdsendc(0x06);delay1ms(200);lcdsendc(0x0c);delay1ms(200);}voidlcdsendc(ucharc){P1=c;lcdrs=0;lcdrw=0;lcde=0;lcde=1;}voidlcdsendd(ucharc){P1=c;lcdrs

4、=1;lcdrw=0;lcde=0;lcde=1;}voidlcdbusy(){ucharma;lcdrs=0;lcdrw=1;lcde=1;ma=P1;if(ma&&0x80==0x80)delay1ms(1);}voiddelay1ms(uinttime){uinti,j;for(i=0;i

5、if((P3&0xf0)!=0xf0){rcode=0xfe;while((rcode&0x10)!=0){P3=rcode;if((P3&0xf0)!=0xf0){ccode=(P3&0xf0)

6、0x0f;while((P3&0xf0)!=0xf0);return((~rcode)+(~ccode));}elsercode=(rcode<<1)

7、0x01;}}}return0;}voidjumpkey(uchark){switch(k){case0x11:num=1;break;case0x21:

8、num=2;break;case0x41:num=3;break;default:break;}}main(){uinti;lcdsendc(0x01);while(1){key=getkey();delayms(20);jumpkey(key);switch(num){case1:lcdsendc(0x01);lcdinit();lcdsendc(0xc3);length1=strlen(sting1);for(i=0;i

9、y1ms(100);}for(i=10;i>0;i--)delayms(50);lcdsendc(0x08);for(i=10;i>0;i--)delayms(50);num=1;break;case2:lcdsendc(0x01);lcdinit();lcdsendc(0x80);length2=strlen(sting2);for(i=0;i

10、01);lcdinit();lcdsendc(0xc0);length3=strlen(sting3);for(i=0;i