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本帖最后由 安乐晨 于 2015-7-15 09:17 编辑
#include"stc12c5a.h"
#include "intrins.h"
#define uchar unsigned char
#define uint unsigned int
uchar lcddate;
uchar dis_time_buf[16]={0};
uchar time_buf[8]={0x20,0x20,
0x20,0x20,0x20,0x20,0x20,0x02};
sbit lcdrs=P3^5;
sbit lcden=P3^4;
sbit lcdrw=P3^6;
sbit RES=P4^5;
sbit IO=P2^7;
sbit SCK=P4^0;
#define ds_second_add 0x80
#define ds_minute_add 0x82
#define ds_hour_add 0x84
#define ds_day_add 0x86
#define ds_month_add 0x88
#define ds_week_add 0x8a
#define ds_year_add 0x8c
#define ds_control_add 0x8e
#define ds_charger_add 0x90
#define ds_clkburst_add 0xbe
void delayms(uint x)
//晶振为12M时，j<112；当晶振为11.0592M时，j<122
{
uint i,j;
for(i=0;i<x;i++)
for(j=0;j<122;j++);
}
void delayus(uint t)
//微秒延时
{
for(;t>0;t--)
{
_nop_();
}
}
void write_com(uchar com) //给液晶指令
{
lcdrs=0;
P0=com;
delayus(20); //delayms(5);
lcden=1;
delayus(20);
lcden=0;
}
void write_date(uchar date) //向液晶写数据
{
lcdrs=1;
P0=date;
delayus(20);
lcden=1;
delayus(20);
lcden=0;
}
void lcd_xy(uchar x,uchar y) //液晶两行的地址
{
uchar address;
if(y==0)
address=0x80+x;
else
address=0xc0+x;
write_com(address);
}
void lcd_write_date(uchar x,uchar y,uchar date) //确定液晶地址并输入数据
{
lcd_xy(x,y);
write_date(date);
}
void lcd_init() //初始化液晶
{
lcden=0;
lcdrw=0;
write_com(0x38);
write_com(0x0c);
write_com(0x06);
write_com(0x01);
}
void ds_init(void) //初始化ds1302时钟芯片
{
RES=0; //RST脚置低
SCK=0; //SCK脚置低
}
void ds_write_date(uchar add,uchar date) //向DS1302地址写入数据
{
uchar i,temp,m,n;
RES=0;
SCK=0;
RES=1;
//最低位置零，寄存器0位为0时写，为1时读
for(i=0;i<8;i++)
{
SCK=0;
temp=add;
IO=(bit)(temp&0x01);
add=add>>1;
SCK=1;
}
m=date/10;
n=date%10;
date=m*16+n;
for(i=0;i<8;i++)
{
SCK=0;
temp=date;
IO=(bit)(temp&0x01);
date=date>>1;
SCK=1;
}
RES=0;
}
uchar ds_read_date(uchar add) //选中地址后从DS中读出该地址数据
{
uchar i,temp,date1,date2;
RES=0;
SCK=0;
RES=1;
add=add|0x01;
for(i=0;i<8;i++)
{
SCK=0;
temp=add;
IO=(bit)(temp&0x01);
add=add>>1;
SCK=1;
}
for(i=0;i<8;i++)
{
SCK=1;
SCK=0;
lcddate=(IO&0x80);
lcddate>>=1;
}
RES=0;
date1=lcddate;
date2=date1/16;
date1=date1%16;
date1=date1+date2*10;
return (date1);
}
void ds_write_time() //将时间数据按照各自地址输入DS
{
ds_write_date(ds_control_add,0x00); //关闭写保护
ds_write_date(ds_second_add,0x80); //暂停时钟
ds_write_date(ds_year_add,time_buf[1]);
ds_write_date(ds_month_add,time_buf[2]);
ds_write_date(ds_day_add,time_buf[3]);
ds_write_date(ds_hour_add,time_buf[4]);
ds_write_date(ds_minute_add,time_buf[5]);
ds_write_date(ds_second_add,time_buf[6]);
ds_write_date(ds_week_add,time_buf[7]);
ds_write_date(ds_control_add,0x80); //打开写保护
}
void ds_read_time() //从DS中按照各自地址读出时间数据
{
time_buf[1]=ds_read_date(ds_year_add);
time_buf[2]=ds_read_date(ds_month_add);
time_buf[3]=ds_read_date(ds_day_add);
time_buf[4]=ds_read_date(ds_hour_add);
time_buf[5]=ds_read_date(ds_minute_add);
time_buf[6]=ds_read_date(ds_second_add)&0x7f;
time_buf[7]=ds_read_date(ds_week_add);
}
void display() //将数据输入到液晶上
{
lcd_write_date(1,0,dis_time_buf[0]+'0');
lcd_write_date(2,0,dis_time_buf[1]+'0');
lcd_write_date(3,0,dis_time_buf[2]+'0');
lcd_write_date(4,0,dis_time_buf[3]+'0');
lcd_write_date(5,0,'-');
lcd_write_date(6,0,dis_time_buf[4]+'0');
lcd_write_date(7,0,dis_time_buf[5]+'0');
lcd_write_date(8,0,'-');
lcd_write_date(9,0,dis_time_buf[6]+'0');
lcd_write_date(10,0,dis_time_buf[7]+'0');
lcd_write_date(12,0,dis_time_buf[14]+'0');
lcd_write_date(4,1,dis_time_buf[8]+'0');
lcd_write_date(5,1,dis_time_buf[9]+'0');
lcd_write_date(6,1,':');
lcd_write_date(7,1,dis_time_buf[10]+'0');
lcd_write_date(8,1,dis_time_buf[11]+'0');
lcd_write_date(9,1,':');
lcd_write_date(10,1,dis_time_buf[12]+'0');
lcd_write_date(11,1,dis_time_buf[13]+'0');
}
void time0() interrupt 1
{
static uchar t;
TL0 = (65535-60000)%256; // 初始值
TH0 = (65535-60000)/256;
TF0=0;
t++;
if(t==4)
{
t=0;
ds_read_time();
dis_time_buf[0]=(time_buf[0]>>4);
dis_time_buf[1]=(time_buf[0]&0x0f);
dis_time_buf[2]=(time_buf[1]>>4);
dis_time_buf[3]=(time_buf[1]&0x0f);
dis_time_buf[4]=(time_buf[2]>>4);
dis_time_buf[5]=(time_buf[2]&0x0f);
dis_time_buf[6]=(time_buf[3]>>4);
dis_time_buf[7]=(time_buf[3]&0x0f);
dis_time_buf[14]=(time_buf[7]&0x07);
dis_time_buf[8]=(time_buf[4]>>4);
dis_time_buf[9]=(time_buf[4]&0x0f);
dis_time_buf[10]=(time_buf[5]>>4);
dis_time_buf[11]=(time_buf[5]&0x0f);
dis_time_buf[12]=(time_buf[6]>>4);
dis_time_buf[13]=(time_buf[6]&0x0f);
}
}
void init_time0()
{
TMOD=0x01;
TL0 = (65535-60000)%256; // 初始值
TH0 = (65535-60000)/256;
TR0=1;
ET0=1;
EA=1;
}
void main()
{
delayms(50);
lcd_init();
ds_init();
delayms(10);
ds_write_time();
init_time0();
while(1)
{
display();
}
}
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