单片机C语言实例-206-12864+DS1302时钟+18B20温度计

嘻嘻哈哈123 · 发表于 2022-2-23 14:26:22

单片机C语言实例-206-12864+DS1302时钟+18B20温度计

/**************************************************************************

               THE REAL TIMER DS1302 DRIVER LIB

         COPYRIGHT (c) 2005 BY JJJ.
                       --  ALL RIGHTS RESERVED  --

File Name:    DS1302.h
Author:       Jiang Jian Jun
Created:       2003/7/21
Modified: NO
Revision: 1.0

***************************************************************************/
#ifndef _REAL_TIMER_DS1302_2003_7_21_
#define _REAL_TIMER_DS1302_2003_7_21_

sbit  DS1302_CLK = P2^4;             //实时时钟时钟线引脚
sbit  DS1302_IO  = P2^5;             //实时时钟数据线引脚
sbit  DS1302_RST = P2^6;             //实时时钟复位线引脚
sbit  ACC0 = ACC^0;
sbit  ACC7 = ACC^7;
char hide_sec,hide_min,hide_hour,hide_day,hide_week,hide_month,hide_year;

typedef struct __SYSTEMTIME__
{
unsigned char Second;
unsigned char Minute;
unsigned char Hour;
unsigned char Week;
unsigned char Day;
unsigned char Month;
unsigned char  Year;
unsigned char DateString[11];
unsigned char TimeString[9];
}SYSTEMTIME; //定义的时间类型

#define AM(X) X
#define PM(X) (X+12)                // 转成24小时制
#define DS1302_SECOND 0x80
#define DS1302_MINUTE 0x82
#define DS1302_HOUR 0x84
#define DS1302_WEEK 0x8A
#define DS1302_DAY 0x86
#define DS1302_MONTH 0x88
#define DS1302_YEAR 0x8C
#define DS1302_RAM(X) (0xC0+(X)*2)    //用于计算 DS1302_RAM 地址的宏

void DS1302InputByte(unsigned char d) //实时时钟写入一字节(内部函数)
{
unsigned char i;
ACC = d;
for(i=8; i>0; i--)
{
      DS1302_IO = ACC0;            //相当于汇编中的 RRC
      DS1302_CLK = 1;
      DS1302_CLK = 0;
      ACC = ACC >> 1;
}
}

unsigned char DS1302OutputByte(void) //实时时钟读取一字节(内部函数)
{
unsigned char i;
for(i=8; i>0; i--)
{
      ACC = ACC >>1;          //相当于汇编中的 RRC
      ACC7 = DS1302_IO;
      DS1302_CLK = 1;
      DS1302_CLK = 0;
}
return(ACC);
}

void Write1302(unsigned char ucAddr, unsigned char ucDa) //ucAddr: DS1302地址, ucData: 要写的数据
{
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr);    // 地址，命令
DS1302InputByte(ucDa);    // 写1Byte数据
DS1302_CLK = 1;
DS1302_RST = 0;
}

unsigned char Read1302(unsigned char ucAddr) //读取DS1302某地址的数据
{
unsigned char ucData;
DS1302_RST = 0;
DS1302_CLK = 0;
DS1302_RST = 1;
DS1302InputByte(ucAddr|0x01);       // 地址，命令
ucData = DS1302OutputByte();       // 读1Byte数据
DS1302_CLK = 1;
DS1302_RST = 0;
return(ucData);
}

void DS1302_SetProtect(bit flag)       //是否写保护
{
if(flag)
Write1302(0x8E,0x10);
else
Write1302(0x8E,0x00);
}

void DS1302_SetTime(unsigned char Address, unsigned char Value)       // 设置时间函数
{
DS1302_SetProtect(0);
Write1302(Address, ((Value/10)<<4 | (Value%10)));
}

void DS1302_GetTime(SYSTEMTIME *Time)
{
unsigned char ReadValue;
ReadValue = Read1302(DS1302_SECOND);
Time->Second = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_MINUTE);
Time->Minute = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_HOUR);
Time->Hour = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_DAY);
Time->Day = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_WEEK);
Time->Week = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_MONTH);
Time->Month = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
ReadValue = Read1302(DS1302_YEAR);
Time->Year = ((ReadValue&0x70)>>4)*10 + (ReadValue&0x0F);
}

void DateToStr(SYSTEMTIME *Time)
{ if(hide_year<2)
{
   Time->DateString[0] = Time->Year/10 + '0';
   Time->DateString[1] = Time->Year%10 + '0';
}
   else
      {
      Time->DateString[0] = ' ';
      Time->DateString[1] = ' ';
}
Time->DateString[2] = '-';
if(hide_month<2)
{
   Time->DateString[3] = Time->Month/10 + '0';
   Time->DateString[4] = Time->Month%10 + '0';
}
   else
   {
      Time->DateString[3] = ' ';
      Time->DateString[4] = ' ';
   }
Time->DateString[5] = '-';
if(hide_day<2)
{
   Time->DateString[6] = Time->Day/10 + '0';
   Time->DateString[7] = Time->Day%10 + '0';
}
   else
   {
      Time->DateString[6] = ' ';
      Time->DateString[7] = ' ';
   }
if(hide_week<2)
{
   Time->DateString[8] = ' ';
   Time->DateString[9] = Time->Week%10 + '0';
}
   else
   {
      Time->DateString[8] = ' ';
      Time->DateString[9] = ' ';
   }

Time->DateString[10] = '\0';
}

void TimeToStr(SYSTEMTIME *Time)
{ if(hide_hour<2)
{
   Time->TimeString[0] = Time->Hour/10 + '0';
   Time->TimeString[1] = Time->Hour%10 + '0';
}
   else
      {
      Time->TimeString[0] = ' ';
      Time->TimeString[1] = ' ';
}
Time->TimeString[2] = ':';
if(hide_min<2)
{
   Time->TimeString[3] = Time->Minute/10 + '0';
   Time->TimeString[4] = Time->Minute%10 + '0';
}
   else
      {
      Time->TimeString[3] = ' ';
      Time->TimeString[4] = ' ';
         }
Time->TimeString[5] = ':';
if(hide_sec<2)
{
   Time->TimeString[6] = Time->Second/10 + '0';
   Time->TimeString[7] = Time->Second%10 + '0';
}
   else
   {
      Time->TimeString[6] = ' ';
      Time->TimeString[7] = ' ';
   }
Time->DateString[8] = '\0';
}

void Initial_DS1302(void)
{
unsigned char Second=Read1302(DS1302_SECOND);
Write1302(0x8e,0x00); //写入允许
Write1302(0x80,0x50);
Write1302(0x82,0x56);
Write1302(0x84,0x22);
Write1302(0x8e,0x80); //禁止写入
if(Second&0x80)
DS1302_SetTime(DS1302_SECOND,0x80);
}

#endif

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