DS1302显示时间

钟线引脚
sbit DS1302_IO = P1^7; //实时时钟数据线引脚
sbit DS1302_RST = P1^5; //实时时钟复位线引脚
sbit ACC0 = ACC^0;
sbit ACC7 = ACC^7;
uchar week_value[2];
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 CurrentTime;//定义的时间类型

#define AM(X)X
#define PM(X)(X+12) // 转成24小时制
#define DS1302_SECOND0x80
#define DS1302_MINUTE0x82
#define DS1302_HOUR0x84
#define DS1302_WEEK0x8A
#define DS1302_DAY0x86
#define DS1302_MONTH0x88
#define DS1302_YEAR0x8C
#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;
}