DS12C887.zip

#include<reg51.h> #include<string.h> #define uchar unsigned char #define uint unsigned int uchar count,s1num,flag,t0_num; uchar shi,fen,miao; sbit lcdrs=P3^7; //选择指令，数据控制端 sbit lcdrd=P3^6; //选择读写控制端 sbit lcden=P3^5; //液晶使能端 sbit dsas=P2^7; sbit dsrw=P2^6; sbit dsds=P2^5; sbit dscs=P2^4; sbit dsirq=P3^3; uchar flag1,flag_ri; // uchar code table[]=" 20 - - "; uchar code table1[]=" : : "; void write_ds(uchar,uchar); uchar read_ds(uchar); void delay(uint z); void lcd_init(); void init(); void write_com(uchar com); void write_date(uchar date); void delay(uint z)//延时子程序 { static uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } void write_com(uchar com) //写指令函数 { lcdrs=0; //选择写指令 lcdrd=0; //选择写 lcden=0; P0=com; //送数据 lcden=1; //使能 delay(3); lcden=0; } void write_date(uchar date) //写数据函数 { lcdrs=1; //选择写数据 lcdrd=0; //选择写 lcden=0; P0=date; //送数据 lcden=1; //使能 delay(3); lcden=0; } void lcd_init() { lcden=0; write_com(0x38); //选择8位数据传输，双行显示，5*7点阵 write_com(0x0c); //显示器打开，光标不显示 write_com(0x06); //读写完一个数据后，地址自加 write_com(0x01); //清屏 delay(1); } void init() { uchar num; write_ds(0x0a,0x20);//打开振荡器 write_ds(0x0b,0x26);//设置24小时模式，数据二进制格式，开启闹钟中断 lcd_init(); write_com(0xc0); for(num=0;num<10;num++) { write_date(table1[num]); } } void write_sfm(uchar add,uchar date) //写液晶时分秒显示函数 { uchar shi,ge; shi=date/10; ge=date%10; write_com(0xc0+add); write_date(0x30+shi); write_date(0x30+ge); } void write_ds(uchar add,uchar date)//写12c887函数 { dscs=0; dsas=1; dsds=1; dsrw=1; P1=add; //写地址 dsas=0; dsrw=0; P1=date; //写数据 dsrw=1; dsas=1; dscs=1; } uchar read_ds(uchar add) //读12c887 { uchar ds_date; dsas=1; dsds=1; dsrw=1; dscs=0; P1=add; dsas=0; dsds=0; P1=0xff; ds_date=P1; dsds=1; dsas=1; dscs=1; return ds_date; } void set_time() //初始化 { write_ds(0,0);//秒 write_ds(2,34);//分钟 write_ds(4,15);//小时 } void main() { init(); set_time(); while(1) { shi=read_ds(4); fen=read_ds(2); miao=read_ds(0); write_sfm(10,miao);//送液晶显示 write_sfm(7,fen); write_sfm(4,shi); } }