关于DS1302时钟芯片程序问题
时间:10-02
整理:3721RD
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源程序如下:
#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table1[]={"20 - - MON"};
uchar code table2[]={" : : "};
uchar write_time[6]={13,7,17,11,10,0};
uchar write_com[6]={0x8c,0x88,0x86,0x84,0x82,0x80};
uchar i,miao,fen,shi,nian,yue,ri,text1=0;
/*DS1302时钟芯片与单片机引脚连接定义*/
sbit SCLK=P3^6;
sbit CE=P3^5;
sbit IO=P3^4;
/*1602LCD液晶显示屏与单片机引脚连接定义*/
sbit RS=P2^6;
sbit RW=P2^5;
sbit LCDE=P2^7;
void lcd_mang()
{
RS=0;
RW=1;
LCDE=1;
_nop_();
_nop_();
_nop_();
_nop_();
while(P0&0x80);
LCDE=0;
}
/*延时函数*/
void delay(uchar z)
{
uchar x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
/*定时器初始化函数*/
void timer_init()
{
TMOD=0x01;
TH0=(65536-1000)/256;
TL0=(65536-1000)%256;
EA=1;
ET0=1;
TR0=1;
}
/*1602LCD地址端定义*/
void write_1602com(uchar com)
{
lcd_mang();
RS=0;
RW=0;
LCDE=0;
P0=com;
delay(5);
LCDE=1;
delay(5);
LCDE=0;
}
/*1602LCD数据端定义*/
void write_1602date(uchar date)
{
lcd_mang();
RS=1;
RW=0;
LCDE=0;
P0=date;
delay(5);
LCDE=1;
delay(5);
LCDE=0;
}
/*1602LCD初始化*/
void LCD1602_init()
{
write_1602com(0x38);
write_1602com(0x0c);
write_1602com(0x06);
write_1602com(0x01);
write_1602com(0x80+1);
for(i=0;i<14;i++)
{
write_1602date(table1);
}
write_1602com(0x80+0x40+4);
for(i=0;i<8;i++)
{
write_1602date(table2);
}
}
/*CPU给DS1302写一个字节*/
void write_1302byte(uchar date)
{
CE=1;
for(i=0;i<8;i++) //循环8次写入数据
{
SCLK=0;
IO=date&0x01; //取低字节
date=date>>1; //每取一次右移一次
SCLK=1;
}
}
/*CPU从DS1302读一个字节*/
uchar read_1302byte(uchar add)
{
uchar text1=0x00;
CE=0;
_nop_();
_nop_();
SCLK=0;
_nop_();
_nop_();
CE=1;
_nop_();
_nop_();
write_1302byte(add);
for(i=0;i<8;i++)
{
if(IO) //关键点,判断IO口繁忙与否
text1=text1|0x80;
SCLK=0;
text1=text1>>1;
_nop_();
_nop_();
_nop_();
SCLK=1;
}
return(text1);
}
/*写入DS1302,给出指定的地址与数据*/
void write_1302(uchar add,uchar date)
{
_nop_();
SCLK=0;
_nop_();
CE=1;
_nop_();
write_1302byte(add);
write_1302byte(date);
_nop_();
}
/*BCD码转换十进制码*/
uchar BCD_Decimal(uchar bcd)
{
uchar decimal;
decimal=bcd>>4;
decimal=decimal*10+(bcd&0x0f);
return(decimal);
}
/*DS1302初始化*/
void DS1302_init()
{
uchar j;
CE=0;
_nop_();
SCLK=0;
_nop_();
for(i=0;i<6;i++)
{
j=write_time/10;
write_time=write_time%10;
write_time=j*16+write_time;
}
write_1302(0x8e,0x00);
for(i=0;i<6;i++)
{
write_1302(write_com,write_time);//在执行一次该语句后,为何会跳出for循环?导致设置初始时钟时只能设置一个,求赐教
}
write_1302(0x8e,0x80);
}
/*时分秒函数*/
void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_1602com(add);
write_1602date(0x30+shi);
write_1602date(0x30+ge);
}
/*年月日函数*/
void write_nyr(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_1602com(add);
write_1602date(0x30+shi);
write_1602date(0x30+ge);
}
void main()
{
LCD1602_init();
timer_init();
DS1302_init();
}
void timer0() interrupt 1
{
TH0=(65536-1000)/256; //1ms
TL0=(65536-1000)%256;
miao=BCD_Decimal(read_1302byte(0x81));
fen=BCD_Decimal(read_1302byte(0x83));
shi=BCD_Decimal(read_1302byte(0x85));
nian=BCD_Decimal(read_1302byte(0x8d));
yue=BCD_Decimal(read_1302byte(0x89));
ri=BCD_Decimal(read_1302byte(0x87));
write_sfm(0x80+0x40+10,miao);
write_sfm(0x80+0x40+7,fen);
write_sfm(0x80+0x40+4,shi);
write_nyr(0x80+3,nian);
write_nyr(0x80+6,yue);
write_nyr(0x80+9,ri);
}
@摆渡手8023 @jianhong_wu @瓶水143
来自小组: 51单片机群
#include <reg52.h>
#include <intrins.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table1[]={"20 - - MON"};
uchar code table2[]={" : : "};
uchar write_time[6]={13,7,17,11,10,0};
uchar write_com[6]={0x8c,0x88,0x86,0x84,0x82,0x80};
uchar i,miao,fen,shi,nian,yue,ri,text1=0;
/*DS1302时钟芯片与单片机引脚连接定义*/
sbit SCLK=P3^6;
sbit CE=P3^5;
sbit IO=P3^4;
/*1602LCD液晶显示屏与单片机引脚连接定义*/
sbit RS=P2^6;
sbit RW=P2^5;
sbit LCDE=P2^7;
void lcd_mang()
{
RS=0;
RW=1;
LCDE=1;
_nop_();
_nop_();
_nop_();
_nop_();
while(P0&0x80);
LCDE=0;
}
/*延时函数*/
void delay(uchar z)
{
uchar x,y;
for(x=z;x>0;x--)
for(y=110;y>0;y--);
}
/*定时器初始化函数*/
void timer_init()
{
TMOD=0x01;
TH0=(65536-1000)/256;
TL0=(65536-1000)%256;
EA=1;
ET0=1;
TR0=1;
}
/*1602LCD地址端定义*/
void write_1602com(uchar com)
{
lcd_mang();
RS=0;
RW=0;
LCDE=0;
P0=com;
delay(5);
LCDE=1;
delay(5);
LCDE=0;
}
/*1602LCD数据端定义*/
void write_1602date(uchar date)
{
lcd_mang();
RS=1;
RW=0;
LCDE=0;
P0=date;
delay(5);
LCDE=1;
delay(5);
LCDE=0;
}
/*1602LCD初始化*/
void LCD1602_init()
{
write_1602com(0x38);
write_1602com(0x0c);
write_1602com(0x06);
write_1602com(0x01);
write_1602com(0x80+1);
for(i=0;i<14;i++)
{
write_1602date(table1);
}
write_1602com(0x80+0x40+4);
for(i=0;i<8;i++)
{
write_1602date(table2);
}
}
/*CPU给DS1302写一个字节*/
void write_1302byte(uchar date)
{
CE=1;
for(i=0;i<8;i++) //循环8次写入数据
{
SCLK=0;
IO=date&0x01; //取低字节
date=date>>1; //每取一次右移一次
SCLK=1;
}
}
/*CPU从DS1302读一个字节*/
uchar read_1302byte(uchar add)
{
uchar text1=0x00;
CE=0;
_nop_();
_nop_();
SCLK=0;
_nop_();
_nop_();
CE=1;
_nop_();
_nop_();
write_1302byte(add);
for(i=0;i<8;i++)
{
if(IO) //关键点,判断IO口繁忙与否
text1=text1|0x80;
SCLK=0;
text1=text1>>1;
_nop_();
_nop_();
_nop_();
SCLK=1;
}
return(text1);
}
/*写入DS1302,给出指定的地址与数据*/
void write_1302(uchar add,uchar date)
{
_nop_();
SCLK=0;
_nop_();
CE=1;
_nop_();
write_1302byte(add);
write_1302byte(date);
_nop_();
}
/*BCD码转换十进制码*/
uchar BCD_Decimal(uchar bcd)
{
uchar decimal;
decimal=bcd>>4;
decimal=decimal*10+(bcd&0x0f);
return(decimal);
}
/*DS1302初始化*/
void DS1302_init()
{
uchar j;
CE=0;
_nop_();
SCLK=0;
_nop_();
for(i=0;i<6;i++)
{
j=write_time/10;
write_time=write_time%10;
write_time=j*16+write_time;
}
write_1302(0x8e,0x00);
for(i=0;i<6;i++)
{
write_1302(write_com,write_time);//在执行一次该语句后,为何会跳出for循环?导致设置初始时钟时只能设置一个,求赐教
}
write_1302(0x8e,0x80);
}
/*时分秒函数*/
void write_sfm(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_1602com(add);
write_1602date(0x30+shi);
write_1602date(0x30+ge);
}
/*年月日函数*/
void write_nyr(uchar add,uchar date)
{
uchar shi,ge;
shi=date/10;
ge=date%10;
write_1602com(add);
write_1602date(0x30+shi);
write_1602date(0x30+ge);
}
void main()
{
LCD1602_init();
timer_init();
DS1302_init();
}
void timer0() interrupt 1
{
TH0=(65536-1000)/256; //1ms
TL0=(65536-1000)%256;
miao=BCD_Decimal(read_1302byte(0x81));
fen=BCD_Decimal(read_1302byte(0x83));
shi=BCD_Decimal(read_1302byte(0x85));
nian=BCD_Decimal(read_1302byte(0x8d));
yue=BCD_Decimal(read_1302byte(0x89));
ri=BCD_Decimal(read_1302byte(0x87));
write_sfm(0x80+0x40+10,miao);
write_sfm(0x80+0x40+7,fen);
write_sfm(0x80+0x40+4,shi);
write_nyr(0x80+3,nian);
write_nyr(0x80+6,yue);
write_nyr(0x80+9,ri);
}
@摆渡手8023 @jianhong_wu @瓶水143
来自小组: 51单片机群