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#ifndef _DS1302_H_
#define _DS1302_H_
void DS1302ByteWrite(unsigned char dat) //向DS1302寫入一個字節
{
unsigned char mask;
for(mask=0x01; mask!=0; mask<<=1) //低位在先
{
if((mask&dat) != 0)
DS1302IO = 1;
else
DS1302IO = 0;
DS1302CK = 1;
DS1302CK = 0;
}
DS1302IO = 1;
}
unsigned char DS1302ByteRead(void) //從DS1302讀取一個字節
{
unsigned char mask;
unsigned char dat = 0;
for(mask=0x01; mask!=0; mask<<=1)
{
if(DS1302IO != 0)
dat |= mask;
DS1302CK = 1;
DS1302CK = 0;
}
return dat;
}
void DS1302SingleWrite(unsigned char reg, unsigned char dat) //寫入DS1302的某一寄存器
{
DS1302CE = 1;
DS1302ByteWrite((reg<<1)|0x80);
DS1302ByteWrite(dat);
DS1302CE = 0;
}
unsigned char DS1302SingleRead(unsigned char reg) //讀取DS1302的某一寄存器
{
unsigned char dat;
DS1302CE = 1;
DS1302ByteWrite((reg<<1)|0x81);
dat = DS1302ByteRead();
DS1302CE = 0;
return dat;
}
void DS1302BurstWrite(unsigned char *dat) //Brust模式寫入時間信息
{
unsigned char i;
DS1302CE = 1;
DS1302ByteWrite(0xBE);
for(i=0; i<8; i++)
{
DS1302ByteWrite(dat[i]);
}
DS1302CE = 0;
}
void DS1302BurstRead(unsigned char *dat) //Brust模式讀出時間信息
{
unsigned char i;
DS1302CE = 1;
DS1302ByteWrite(0xBF);
for(i=0; i<8; i++)
{
dat[i] = DS1302ByteRead();
}
DS1302CE = 0;
}
//欲寫入的是十進制的時間信息，不是BCD碼，已進行轉換
struct TIME Bcd1302ToDec(struct TIME *time)
{
struct TIME dectime;
dectime.year = (time->year >> 4) * 10;
dectime.year = (time->year & 0x0F) + dectime.year;
dectime.mon = (time->mon >> 4) * 10;
dectime.mon = (time->mon & 0x0F) + dectime.mon;
dectime.day = (time->day >> 4) * 10;
dectime.day = (time->day & 0x0F) + dectime.day;
dectime.hour = (time->hour >> 4) * 10;
dectime.hour = (time->hour & 0x0F) + dectime.hour;
dectime.min = (time->min >> 4) * 10;
dectime.min = (time->min & 0x0F) + dectime.min;
dectime.sec = (time->sec >> 4) * 10;
dectime.sec = (time->sec & 0x0F) + dectime.sec;
dectime.week = time->week & 0x0F;
return dectime;
}
//獲取到的是十進制的時間信息，不是BCD碼，獲取后已進行轉換
void GetRealTime(struct TIME *time) //獲取時間信息，并保存在時間結構體中
{
unsigned char buf[8];
struct TIME temp;
DS1302BurstRead(buf);
temp.year = buf[6];
temp.mon = buf[4];
temp.day = buf[3];
temp.hour = buf[2];
temp.min = buf[1];
temp.sec = buf[0];
temp.week = buf[5];
*time = Bcd1302ToDec(&temp); //將BCD碼轉為十進制
}
struct TIME DecToBcd1302(struct TIME *time)
{
struct TIME bcdtime;
bcdtime.year = (time->year / 10 % 10) * 16;
bcdtime.year = (time->year % 10) + bcdtime.year;
bcdtime.mon = (time->mon / 10 % 10) * 16;
bcdtime.mon = (time->mon % 10) + bcdtime.mon;
bcdtime.day = (time->day / 10 % 10) * 16;
bcdtime.day = (time->day % 10) + bcdtime.day;
bcdtime.hour = (time->hour / 10 % 10) * 16;
bcdtime.hour = (time->hour % 10) + bcdtime.hour;
bcdtime.min = (time->min / 10 % 10) * 16;
bcdtime.min = (time->min % 10) + bcdtime.min;
bcdtime.sec = (time->sec / 10 % 10) * 16;
bcdtime.sec = (time->sec % 10) + bcdtime.sec;
bcdtime.week = time->week % 10;
return bcdtime;
}
void SetRealTime(struct TIME *time) //通過時間結構體設置時間
{
unsigned char buf[8];
struct TIME temp;
temp = DecToBcd1302(time);
buf[7] = 0;
buf[6] = temp.year;
buf[5] = temp.week;
buf[4] = temp.mon;
buf[3] = temp.day;
buf[2] = temp.hour;
buf[1] = temp.min;
buf[0] = temp.sec;
DS1302BurstWrite(buf);
}
void InitDS1302(void) //初始化DS1302
{
unsigned char dat;
struct TIME eepromtime;
DS1302CE = 0;
DS1302CK = 0;
dat = DS1302SingleRead(0);
if((dat & 0x80) != 0) //檢測時間在掉電時是否停止過，停1走0，如果停過就從新寫入初始化時間
{
GetE2promTime(&eepromtime); //停止過，獲取EEPROM里的時間
DS1302SingleWrite(7, 0x00); //撤銷保護
SetRealTime(&eepromtime);
}
lcdShowStr(0, 0, "20 - -");
lcdShowStr(3, 1, ": :");
}
void lcdShowWeek(unsigned char x, unsigned char y, unsigned char week)
{
unsigned char str[5];
lcdShowStr(x-4, y, "week");
str[0] = week % 10 + '0';
str[1] = '\0';
lcdShowStr(x, y, str);
}
void RefreshTime(struct TIME *time)
{
static unsigned char dayBF = 88;
if(dayBF != time->day) //日期發生變化，更新年月日周
{
lcdShowNum(2, 0, time->year);
lcdShowNum(5, 0, time->mon);
lcdShowNum(8, 0, time->day);
lcdShowWeek(15,0, time->week);
dayBF = time->day;
}
lcdShowNum(1, 1, time->hour);
lcdShowNum(4, 1, time->min);
lcdShowNum(7, 1, time->sec);
}
void HourlyWork(struct TIME *time) //小時事件
{
static char hourBF = 88;
static char lightlevelBF = 3;
if(time->hour != hourBF) //時有變
{
if(time->hour==lcdlighton) //判斷是否有背光開關
{
lcdlight = 0;
if(lightlevelBF != 0)
lcdlightlevel = lightlevelBF;
else
lcdlightlevel = 4;
}
else if(time->hour==lcdlightoff) //判斷是否有背光開關
{
lcdlight = 1;
lightlevelBF = lcdlightlevel;
lcdlightlevel = 0;
}
if((time->hour>=ZDBSbegin)&&(time->hour<=ZDBSend))
{
if(hourlybuzz != 0) //整點報時開
flagZD = 1;
}
SaveTimeToE2prom(time); //每小時更新EEPROM里的時間信息
hourBF = time->hour; //更新備份值
}
}
void LedWaterShow() //流水燈效果
{
static unsigned char ledshow = 0x01;
static bit dir = 0;
ledDB = ledshow;
if(dir == 0)
{
ledshow = ledshow << 1;
if(ledshow == 0x00)
{
dir = 1;
ledshow = 0x40;
}
}
else
{
ledshow = ledshow >> 1;
if(ledshow == 0x00)
{
dir = 0;
ledshow = 0x02;
}
}
}
/*******************************************************************************
補償值計算方法：當X秒后時間慢Y秒，則:實減=X/當前值；應減=實減-Y；補償值=X/應減
********************************************************************************/
void TimeBuChang(struct TIME *time)
{
static char flagBC = 0;
static unsigned int BCcnt = 0;
static struct TIME BCtime;
if(flagBC != 0)
{
flagBC = 0;
SetRealTime(&BCtime); //寫入上一秒時間，相當于減一秒
}
BCcnt++;
if(BCcnt > secBuChang) //每X秒減1秒
{
timemenu = 88; //禁止時間更新
BCcnt = 0;
BCtime = *time; //備份上一秒時間
flagBC = 1;
timemenu = 0; //開時間更新
}
}
void UpdateTime()
{
static unsigned char secBF = 88;
static unsigned int ds18b20cnt = 0;
struct TIME buftime; //從DS1302中讀取出來的值
GetRealTime(&buftime);
if(buftime.sec != secBF)
{
RefreshTime(&buftime);
secBF = buftime.sec;
ds18b20cnt++;
if(ds18b20cnt > GetTempSpace)
{
ds18b20cnt = 0;
RefreshTemp();
}
HourlyWork(&buftime);
LedWaterShow();
TimeBuChang(&buftime); //時間補償
}
}
void RefreshTimeNow()
{
struct TIME buftime;
GetRealTime(&buftime);
lcdShowStr(0, 0, "20 - -");
lcdShowStr(3, 1, ": :");
lcdShowNum(2, 0, buftime.year);
lcdShowNum(5, 0, buftime.mon);
lcdShowNum(8, 0, buftime.day);
lcdShowNum(1, 1, buftime.hour);
lcdShowNum(4, 1, buftime.min);
lcdShowNum(7, 1, buftime.sec);
lcdShowWeek(15,0, buftime.week);
if(hourlybuzz != 0)
lcdShowImage(0, 1, image0, 0);
else
lcdShowStr(0, 1, " ");
lcdShowImage(15, 1, image1, 1);
}
#endif

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