lcd1602显示实时时钟与模块化编程.docxVIP

本程序是用lcd1602显示实时时钟 Ds1302 Ds1302单字节读写顺序 程序如下： #includereg51.h #includeintrins.h #define uint unsigned int #define uchar unsigned char sbit sclk=P3^6; sbit rst=P3^5; sbit dsio=P3^4; sbit rs=P2^6; sbit rw=P2^5; sbit e=P2^7; uchar busy1; uchar code write_addr[7]={0x80,0x82,0x84,0x86,0x88,0x8a,0x8c}; uchar code read_addr[7]={0x81,0x83,0x85,0x87,0x89,0x8b,0x8d}; uchar time[7]={0,0x49,0x14,0x22,0x02,0x01,0x16}; uchar DisplayData[8]; void delay(uint n) { uchar m; while(--n) { for(m=0;m40;m++); } } unsigned char busy() { unsigned char f; rs=0; rw=1; e=1; delay(1); f=P0; e=0; busy1=f0x80; return busy1; } void lcd_write_com(unsigned char com1) //写命令 { while(busy()==0x80); rs=0; rw=0; e=0; P0=com1; delay(5); e=1; delay(5); e=0; } void lcdreset( ) //初始化 { delay(10); lcd_write_com(0x38);//设置显示模式 lcd_write_com(0x0c); lcd_write_com(0x06); lcd_write_com(0x01); lcd_write_com(0x80); } void lcd_write_data(unsigned char data1) //写数据 { while(busy()==0x80); rs=1; rw=0; e=0; P0=data1; delay(5); e=1; delay(5); e=0; } void ds1302_write(uchar addr,uchar dat) { uchar n; sclk=0; _nop_(); rst=1; _nop_(); for(n=0;n8;n++) { dsio=addr0x01; addr=1; sclk=1; _nop_(); sclk=0; _nop_(); } for(n=0;n8;n++) { dsio=dat0x01; dat=1; sclk=1; _nop_(); sclk=0; _nop_(); } rst=0; _nop_(); } uchar ds1302_read(uchar addr) { uchar n,dat,dat1; sclk=0; _nop_(); rst=1; _nop_(); for(n=0;n8;n++) { dsio=addr0x01; addr=1; sclk=1; _nop_(); sclk=0; _nop_(); } _nop_(); for(n=0;n8;n++) { dat1=dsio; // dat=dat1; // dat|=dat17; dat=(dat17)|(dat1); sclk=1; _nop_(); sclk=0; _nop_(); } rst=0; _nop_(); sclk=1; _nop_(); dsio=0; _nop_(); dsio=1; _nop_(); return dat; } void ds1302_init() { uchar n; ds1302_write(0x8e,0x00); for(n=0;n7;n++) { ds1302_write(write_addr[n],time[n]); } ds1302_write(0x8e,0x80); } void ds1302_readtime() { uchar n; for(n=0;n7;n++) { time[n]=ds1302_read(re