/**
* @file RTC_Init
* @brief RTC Initialization
* @param 无
* @retval 无
*/
void RTC_Init(void)
{
if (BKP_ReadBackupRegister(BKP_DR1)!= 0xA5A5)
{
/* Backup data register value is not correct or not yet programmed (when
the first time the program is executed) */
printf("RTC not yet configured....\r\n");
/* RTC Configuration */
RTC_Configuration();
Time_Regulate();
/* Adjust time by values entred by the user on the hyperterminal */
printf("RTC configured....\r\n");
BKP_WriteBackupRegister(BKP_DR1, 0xA5A5);
}
else
{
/* Check if the Power On Reset flag is set */
if (RCC_GetFlagStatus(RCC_FLAG_PORRST) != RESET)
{
printf("Power On Reset occurred....\r\n");
}
/* Check if the Pin Reset flag is set */
else if (RCC_GetFlagStatus(RCC_FLAG_PINRST) != RESET)
{
printf("External Reset occurred....\r\n");
}
printf("No need to configure RTC....\r\n");
/* Wait for RTC registers synchronization */
RTC_WaitForSynchro();
/* Enable the RTC Second */
RTC_ITConfig(RTC_IT_SEC, ENABLE);
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
/* NVIC configuration */
NVIC_Configuration();
#ifdef RTCClockOutput_Enable
/* Enable PWR and BKP clocks */
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
/* Allow access to BKP Domain */
PWR_BackupAccessCmd(ENABLE);
/* Disable the Tamper Pin */
BKP_TamperPinCmd(DISABLE); /* To output RTCCLK/64 on Tamper pin, the tamper
functionality must be disabled */
/* Enable RTC Clock Output on Tamper Pin */
BKP_RTCOutputConfig(BKP_RTCOutputSource_CalibClock);
#endif
/* Clear reset flags */
RCC_ClearFlag();
return;
}
/**
* @brief Adjusts time.
* @param None
* @retval None
*/
void Time_Adjust(void) {
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Change the current time */
RTC_SetCounter(Time_Regulate());
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
/**
* @brief Returns the time entered by user, using demo board keys.
* @param None
* @retval None
*/
void Time_Adjust(void)
{
/* Display the current time */
Time_Display();
/* Change the current time */
Time_Regulate();
}
/*
* 函数名：Time_Adjust
* 描述 ：时间调节
* 输入 ：无
* 输出 ：无
* 调用 ：主函数调用
*/
void Time_Adjust(void)
{
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Change the current time
* 将设置的初始时间值装入RTC计数器，RTC开始运行时，计数器里面的值
* 会在初始值的基础上自动一秒加1次 */
RTC_SetCounter(Time_Regulate());
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
/*
* 函数名：Time_Adjust
* 描述 ：时间调节
* 输入 ：用于读取RTC时间的结构体指针
* 输出 ：无
* 调用 ：外部调用
*/
void Time_Adjust(struct rtc_time *tm)
{
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Get time entred by the user on the hyperterminal */
Time_Regulate(tm);
/* Get wday */
GregorianDay(tm);
/* 修改当前RTC计数寄存器内容 */
RTC_SetCounter(mktimev(tm));
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
}
/*******************************************************************************
* Function Name : Time_PreAdjust
* Description : Returns the time entered by user, using demoboard keys.
* Input : None
* Output : None
* Return : None
*******************************************************************************/
static void Time_PreAdjust(void)
{
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
/* Clear the LCD screen */
LCD_Clear(White);
LCD_SetDisplayWindow(160, 223, 128, 128);
LCD_NORDisplay(WATCH_ICON);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_FSMC, ENABLE);
/* Disable LCD Window mode */
LCD_WindowModeDisable();
if(BKP_ReadBackupRegister(BKP_DR1) != 0xA5A5)
{
RCC_APB1PeriphClockCmd(RCC_APB1Periph_PWR | RCC_APB1Periph_BKP, ENABLE);
/* Allow access to BKP Domain */
PWR_BackupAccessCmd(ENABLE);
LCD_DisplayStringLine(Line7, "RTC Config PLZ Wait.");
/* RTC Configuration */
RTC_Configuration();
LCD_DisplayStringLine(Line7, " TIME ");
/* Clear Line8 */
LCD_ClearLine(Line8);
/* Display time separators ":" on Line4 */
LCD_DisplayChar(Line8, 212, ':');
LCD_DisplayChar(Line8, 166, ':');
/* Display the current time */
Time_Display(RTC_GetCounter());
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Change the current time */
RTC_SetCounter(Time_Regulate());
BKP_WriteBackupRegister(BKP_DR1, 0xA5A5);
/* Clear Line7 */
LCD_ClearLine(Line7);
/* Clear Line8 */
LCD_ClearLine(Line8);
/* Adjust Date */
Date_PreAdjust();
}
else
{
/* Clear Line8 */
LCD_ClearLine(Line8);
/* Display time separators ":" on Line4 */
LCD_DisplayChar(Line8, 212, ':');
LCD_DisplayChar(Line8, 166, ':');
/* Display the current time */
Time_Display(RTC_GetCounter());
/* Wait until last write operation on RTC registers has finished */
RTC_WaitForLastTask();
/* Change the current time */
RTC_SetCounter(Time_Regulate());
}
}
/*********************************************************************************************************
* @brief Calendar program.
* @retval None
********************************************************************************************************/
void Calendar(void)
{
CKCU_APBPerip1ClockConfig(CKCU_APBEN1_RTC, ENABLE);
if(PWRCU_CheckReadyAccessed() != PWRCU_OK)
{
while(1);
}
/* Init LED3 and USART */
LED_Configuration();
USART_Configuration();
/* Enable NVIC RTC interrupt */
NVIC_EnableIRQ(RTC_IRQn);
/* Check if the Power On Reset flag is set */
if(PWRCU_GetFlagStatus() == PWRCU_FLAG_BAKPOR)
{
printf("\r\n\n Power On Reset occurred....");
}
if(PWRCU_ReadBackupRegister(PWRCU_BAKREG_0) != 0x5A5A)
{
u32 wInitTime = 0;
/* Backup data register value is not correct or not yet programmed (when
the first time the program is executed) */
printf("\r\n\n RTC not yet configured....");
/* RTC Configuration */
RTC_Configuration();
printf("\r\n RTC configured....");
/* Adjust time by values entred by the user on the hyperterminal,
Then store the init time to PWRCU_BAKREG_1. */
wInitTime = Time_Regulate() ;
PWRCU_WriteBackupRegister(PWRCU_BAKREG_1, wInitTime);
/* Reset RTC Counter when Time is 23:59:59 */
RTC_SetCompare(86400 - wInitTime) ;
PWRCU_WriteBackupRegister(PWRCU_BAKREG_0, 0x5A5A);
/* Enable RTC */
RTC_Cmd(ENABLE) ;
}
else
{
printf("\r\n No need to configure RTC....");
}
/* Display current time in infinite loop */
printf("\n\r");
while (1)
{
/* If 1s has paased */
if(gwTimeDisplay == 1)
{
/* Display current time.
Current time is sum of the RTC counter value and the init time(stored in PWRCU_BAKREG_1 register).
The init time (PWRCU_BAKREG_1 register) will be clear if the RTC Match flag(CMFLAG) is set.
Refer to RTC_IRQHandler. */
Time_Display(RTC_GetCounter() + PWRCU_ReadBackupRegister(PWRCU_BAKREG_1));
gwTimeDisplay = 0;
}
}
}
