DS1302+LCD1602显示C程序.doc

#includereg52.h //#include51hei.h #define uchar unsigned char //#define uint unsigned int sbit lcdrs=P3^5; sbit lcdrw=P2^7; sbit lcden=P3^4; sbit io=P1^1; sbit clk=P1^0; sbit rst=P2^0; sbit set=P3^2; sbit up=P3^6 ; sbit down=P3^7; #define lcddata P0 uchar code table[]= 20 - - 01; uchar code table1[]= : : ; uchar shi,fen,miao,ri,yue,nian,zhou; void delay(uchar z) { uchar x,y; for(x=z;x0;x--) for(y=110;y0;y--); } /*********往1602液晶写入指令*****************/ void write_com(uchar com) { lcdrs=0; lcdrw=0; lcddata=com; delay(5); lcden=1; delay(5); lcden=0; } /********往1602液晶写入数据******************/ void write_dat(uchar dat) { lcdrs=1; lcdrw=0; lcddata=dat; delay(5); lcden=1; delay(5); lcden=0; } /*************初始化*************/ void init_lcd() { uchar i; //guanled(); //guandz(); lcden=0; write_com(0x38); write_com(0x0c); write_com(0x06); write_com(0x01); write_com(0x80); for(i=0;i16;i++) { write_dat(table[i]); } write_com(0x80+0x40); for(i=0;i16;i++) { write_dat(table1[i]); } } /********写一字节******************/ void write_byte(uchar date) { uchar i,temp; temp=date; for(i=0;i8;i++) { if((temp0x01)==1) io=1; else io=0; clk=1; clk=0; temp=1; } } /********读一字节******************/ uchar read_byte() { uchar i,temp; for(i=0;i8;i++) { temp=1; if(io==1) temp|=0x80; clk=1; clk=0; } return temp; } /********指定位置写******************/ void write_ds1302(uchar addr,uchar date) { rst=0; clk=0; rst=1; write_byte(addr); write_byte(date); clk=1; rst=0; } /********指定位置度******************/ uchar read_ds1302(uchar addr) { uchar date; rst=0; clk=0; rst=1; write_byte(addr); date=read_byte(); clk=1; rst=0; return date;