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#include"reg52.h"
#define uint unsigned int
#define uchar unsigned char
uchar second,minute,hour,day,month,week,year;
sbit wr=P2^5;
sbit rs=P2^6;
sbit lcde=P2^7;
sbit ds1302=P3^4;
sbit rst=P3^5;
sbit sclk=P3^6;
uchar code table1[]=" 11-04-19";
uchar code table2[]=" 23:59:50 week:7";
void delay(uint z)
{
uint x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
void write_com(uchar com) //写命令
{
rs=0;
lcde=0;
P0=com;
delay(2);
lcde=1;
delay(2);
lcde=0;
}
void write_dat(uchar dat) //写数据
{
rs=1;
lcde=0;
P0=dat;
delay(2);
lcde=1;
delay(2);
lcde=0;
}
void init1602()
{
uchar num;
wr=0;
write_com(0x38); //显示模式设置
write_com(0x0c);
write_com(0x06);
write_com(0x01);//清屏
write_com(0x80);
for(num=0;num<11;num++)
{
write_dat(table1[num]);
delay(1);
}
write_com(0x80+0x40);
for(num=0;num<16;num++)
{
write_dat(table2[num]);
delay(1);
}
}
void write1302(uchar dat)
{
uchar i;
for(i=0;i<8;i++)
{
sclk=0;
ds1302=dat&0x01; //当SCLK为0时把数据放在数据口
delay(1);
sclk=1; //SCLK为高电平时把数据写进去
delay(1);
dat>>=1;
}
}
uchar read1302()
{
uchar i,dat;
for(i=0;i<8;i++)
{
dat>>=1;
sclk=1;
delay(1);
sclk=0;
if(ds1302==1) //当SCLK在下降沿的时候把数据读走
dat=dat|0x80;
delay(1);
}
return dat;
}
void writeset1302(uchar cmd,uchar dat) //一次写两个字节，一个为控制字节，另一个为数据。注意写数据时必须打开写保护寄存器
{
sclk=0; //开始比RST先为低电平
rst=0;
rst=1;
delay(1);
write1302(cmd);
write1302((dat/10)<<4|(dat%10)); //将10进制转化为压缩的BCD码，传输时为BCD码
sclk=0;
rst=0;
}
uchar readset1302(uchar cmd)
{
uchar dat,datH,datL,temp;
rst=0;
rst=1;
sclk=0;
delay(1);
write1302(cmd);
dat=read1302();
sclk=0;
rst=0;
datH=dat/16; //将压缩的BCD码转换为十进制书相当于左移4位
datL=dat%16; //
temp=datH*10+datL; //
return (temp);
}
void init1302()
{
writeset1302(0x8e,0x00); ///将写保护寄存器打开允许写操作
writeset1302(0x80,50); ///写秒和开启时钟
writeset1302(0x82,59); ///分
writeset1302(0x84,23); /// 时
writeset1302(0x86,19); /// 日
writeset1302(0x88,4); ///月
writeset1302(0x8a,7); /// 周
writeset1302(0x8c,11); /// 年
writeset1302(0x90,0xa5); ///打开充电功能，选择2K电阻方式充电
writeset1302(0x8e,0x80); ///写保护寄存器，写入保护指?
}
void display1602(uchar dat)
{
uchar shi,ge;
shi=dat/10;
ge=dat%10;
write_dat(0x30+shi);
write_dat(0x30+ge);
}
void time() //显示日期和时期
{
second=readset1302(0x81);
write_com(0x80+0x40+7);
display1602(second);
minute=readset1302(0x83);
write_com(0x80+0x40+4);
display1602(minute);
hour=readset1302(0x85);
write_com(0x80+0x40+1);
display1602(hour);
day=readset1302(0x87);
write_com(0x80+9);
display1602(day);
month=readset1302(0x89);
write_com(0x80+6);
display1602(month);
week=readset1302(0x8b)*10;
write_com(0x80+0x40+15);
display1602(week);
year=readset1302(0x8d);
write_com(0x80+3);
display1602(year);
}
void main()
{
init1602();
// init1302();
while(1)
{
time();
}
} |
阿莫论坛20周年了！感谢大家的支持与爱护！！
曾经有一段真挚的爱情摆在我的面前，我没有珍惜，现在想起来，还好我没有珍惜……
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发表于 2011-11-23 18:59:13
