STM32 萬年歷 顯示年月日 時(shí)分秒 星期

此程序 第一次運(yùn)行時(shí)候 從超級(jí)終端 輸入時(shí)間
關(guān)鍵代碼

/*******************************************************************************
* Function Name : Time_Regulate
* Description : Returns the time entered by user, using Hyperterminal.
* Input : None
* Output : None
* Return : Current time RTC counter value
*******************************************************************************/
//u32 Month_Days[13] = {0,31,28,31,30, 31, 30, 31, 31, 30, 31, 30, 31};

u32 Month_Days_Accu_C[13] = {0,31,59,90,120,151,181,212,243,273,304,334,365};
u32 Month_Days_Accu_L[13] = {0,31,60,91,121,152,182,213,244,274,305,335,366};
#define SecsPerDay (3600*24)

u32 Time_Regulate(void)
{
#if 1
u32 Tmp_Year=0xFFFF, Tmp_Month=0xFF, Tmp_Date=0xFF;
u32 LeapY, ComY, TotSeconds, TotDays;
#endif
u32 Tmp_HH = 0xFF, Tmp_MM = 0xFF, Tmp_SS = 0xFF;

printf("rn==============Time Settings=====================================");

#if 1
printf("rn Please Set Year");
while(Tmp_Year == 0xFFFF)
{
/*32-bit counter at Second Unit--> 4*1024*1024(s) --> 49710(day) --> 136(year)*/
Tmp_Year = USART_Scanf(2136);
}
//Tmp_Year=2010;
printf(": %d", Tmp_Year);

printf("rn Please Set Month");
while(Tmp_Month == 0xFF)
{
Tmp_Month = USART_Scanf(12);
}
printf(": %d", Tmp_Month);

printf("rn Please Set Date");
while(Tmp_Date == 0xFF)
{
Tmp_Date = USART_Scanf(31);
}
printf(": %d", Tmp_Date);
#endif

printf("rn Please Set Hours");
while(Tmp_HH == 0xFF)
{
Tmp_HH = USART_Scanf(23);
}
printf(": %d", Tmp_HH);

printf("rn Please Set Minutes");
while(Tmp_MM == 0xFF)
{
Tmp_MM = USART_Scanf(59);
}
printf(": %d", Tmp_MM);;

printf("rn Please Set Seconds");
while(Tmp_SS == 0xFF)
{
Tmp_SS = USART_Scanf(59);
}
printf(": %d", Tmp_SS);

#if 1
{
/* change Year-Month-Data-Hour-Minute-Seconds into X(Second) to set RTC->CNTR */
if(Tmp_Year==2000)
LeapY = 0;
else
LeapY = (Tmp_Year - 2000 -1)/4 +1;

ComY = (Tmp_Year - 2000)-(LeapY);

if (Tmp_Year%4)
//common year
TotDays = LeapY*366 + ComY*365 + Month_Days_Accu_C[Tmp_Month-1] + (Tmp_Date-1);
else
//leap year
TotDays = LeapY*366 + ComY*365 + Month_Days_Accu_L[Tmp_Month-1] + (Tmp_Date-1);

TotSeconds = TotDays*SecsPerDay + (Tmp_HH*3600 + Tmp_MM*60 + Tmp_SS);
}
#endif

/* Return the value to store in RTC counter register */
//return((Tmp_HH*3600 + Tmp_MM*60 + Tmp_SS));
return TotSeconds;
}

===============================================

/**
* @brief Displays the current time.
* @param TimeVar: RTC counter value.
* @retval None
*/

#define SecsPerComYear 3153600//(365*3600*24)
#define SecsPerLeapYear 31622400//(366*3600*24)
#define SecsPerFourYear 126230400//((365*3600*24)*3+(366*3600*24))
#define SecsPerDay (3600*24)

s32 Year_Secs_Accu[5]={0,
31622400,
63158400,
94694400,
126230400};

s32 Month_Secs_Accu_C[13] = { 0,
2678400,
5097600,
7776000,
10368000,
13046400,
15638400,
18316800,
20995200,
23587200,
26265600,
28857600,
31536000};
s32 Month_Secs_Accu_L[13] = {0,
2678400,
5184000,
7862400,
10454400,
13132800,
15724800,
18403200,
21081600,
23673600,
26352000,
28944000,
31622400};
void Time_Display(uint32_t TimeVar)
{
#if 0
uint32_t THH = 0, TMM = 0, TSS = 0;

/* Compute hours */
THH = TimeVar / 3600;
/* Compute minutes */
TMM = (TimeVar % 3600) / 60;
/* Compute seconds */
TSS = (TimeVar % 3600) % 60;

printf("Time: %0.2d:%0.2d:%0.2dr", THH, TMM, TSS);
#endif
//----------------------------------------------
#if 1
u32 TY = 0, TM = 1, TD = 0;
s32 Num4Y,NumY, OffSec, Off4Y = 0;
u32 i;
//s32 NumDay, OffDay;
s32 NumDay;
#endif
u32 THH = 0, TMM = 0, TSS = 0;
#if 0
/* Compute hours */
THH = TimeVar/3600;
/* Compute minutes */
TMM = (TimeVar % 3600)/60;
/* Compute seconds */
TSS = (TimeVar % 3600)% 60;
#endif
#if 1
{
Num4Y = TimeVar/SecsPerFourYear;
OffSec = TimeVar%SecsPerFourYear;

i=1;
while(OffSec > Year_Secs_Accu[i++])
Off4Y++;

/* Numer of Complete Year */
NumY = Num4Y*4 + Off4Y;
/* 2000,2001,...~2000+NumY-1 complete year before, so this year is 2000+NumY*/
TY = 2000+NumY;

OffSec = OffSec - Year_Secs_Accu[i-2];

/* Month (TBD with OffSec)*/
i=0;
if(TY%4)
{// common year
while(OffSec > Month_Secs_Accu_C[i++]);
TM = i-1;
OffSec = OffSec - Month_Secs_Accu_C[i-2];
}
else
{// leap year
while(OffSec > Month_Secs_Accu_L[i++]);
TM = i-1;
OffSec = OffSec - Month_Secs_Accu_L[i-2];
}

/* Date (TBD with OffSec) */
NumDay = OffSec/SecsPerDay;
OffSec = OffSec%SecsPerDay;
TD = NumDay+1;

/* Compute hours */
THH = OffSec/3600;
/* Compute minutes */
TMM = (OffSec % 3600)/60;
/* Compute seconds */
TSS = (OffSec % 3600)% 60;
}
#endif

printf("Date: %0.4d-%0.2d-%0.2d Time: %0.2d:%0.2d:%0.2dr",TY, TM, TD,THH, TMM, TSS);
//----------------------------------------------------
}

===========================================

/**
* @brief Gets numeric values from the hyperterminal.
* @param None
* @retval None
*/

//注意返回值一定不能是 uint8_t
uint32_t USART_Scanf(uint32_t value)
{
u32 index = 0;
u32 tmp[4] = {0, 0};
u32 Num;

if (value==2136)
Num = 4;
else
Num = 2;

while(index < Num)
{
/* Loop until RXNE = 1 */
while(USART_GetFlagStatus(USART1, USART_FLAG_RXNE) == RESET)
{
}
tmp[index++] = (USART_ReceiveData(USART1));
if((tmp[index - 1] < 0x30) || (tmp[index - 1] > 0x39))
{
printf("nrPlease enter valid number between 0 and 9");
index--;
}
}
/* Calculate the Corresponding value */
if (value!=2136)
index = ((tmp[0] - 0x30) * 10) + (tmp[1] - 0x30);
else
index = ((tmp[0] - 0x30) * 1000) + ((tmp[1] - 0x30) * 100) + ((tmp[2] - 0x30) * 10) + (tmp[3] - 0x30);
/* Checks */
if(index > value)
{
printf("nrPlease enter valid number between 0 and %d", value);
return 0xFF;
}
return index;
}

=============

程序下載地址

顯示年月日 時(shí)分秒的程序（注意是板凳的回復(fù)）
轉(zhuǎn)自Tony嵌入式論壇,地址:http://www.cevx.com/bbs/thread-26329-1-1.html

===================

附：年月日轉(zhuǎn)化為星期的函數(shù)

int Ymd2Wday(int year, int month, int days) //年月日 to 星期 ******* 已驗(yàn)證******
{
static int mdays[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30 };
int i, y = year - 1;
for (i=0; iif (month>2) { // Increment date if this is a leap year after February
if (((year%400)==0) || ((year&3)==0 && (year%100))) ++days;
}
return (y+y/4-y/100+y/400+days)%7;
}

//由年月日計(jì)算星期
//判斷是否是閏年,閏年2月是29天 公式:366%7=2;如真是是要計(jì)算萬年用if(((y%4==0)&&(y%100!=0))||(y%400==0))) 這里為了減少編譯代碼長度
unsigned char getweek(unsigned char year,unsigned char month,unsigned char day)
{
unsigned char week,tp;
tp=0;week=5; //初始化2000-01-01星期六
while(tp!=year){ //處理年(2000開始)
week++; //是上一年的星期的下一天 公式:365%7=1
if(tp%4==0)week++; //判斷是否是閏年,閏年2月是29天 公式:366%7=2
tp++; //下一年的1月1日
}
tp=1;
while(tp!=month){ //處理月(1月開始)
switch(tp){
case 1:case 3:case 5:case 7:case 8:case 10:case 12: week=week+3;break; //大月天數(shù)31%7
case 2: if(year%4==0)week++;break; //閏月天數(shù),閏年2月是29天 公式:366%7=2 29%7
case 4:case 6:case 9:case 11: week=week+2;break; //小月天數(shù)30%7
}
tp++; //處理月
}
week=week+day; //處理日(從1日開始)
week=week%7;
if(week==0) week=7;
return week; //返回星期
}

-------------------------------------------

我也貢獻(xiàn)一個(gè)

unsigned char week(void)
{
int Y;
unsigned char A;
Y=2000+t.n;
/*下面的四條語句用來計(jì)算輸入日期的星期數(shù)，是程序的核心部分，缺一不可 */
A = Y>0?(5+(Y+1)+(Y-1)/4-(Y-1)/100+(Y-1)/400)%7:(5+Y+Y/4-Y/100+Y/400)%7;
A = t.y>2?(A+2*(t.y+1)+3*(t.y+1)/5)%7:(A+2*(t.y+2)+3*(t.y+2)/5)%7;
if (((Y%4 == 0 && Y%100 != 0) || (Y%100==0 &&Y%400 == 0)) && t.y>2) {A =(A+1)%7;}
A=(A+t.r)%7;
if (A==0) A=8;/*星期日顯示 8*/
return A;
}

當(dāng)前的
t.n 年
t.y 月
t.r 日