NUC200_Template/BSP/StdDriver/src/rtc.c

787 lines
30 KiB
C

/**************************************************************************//**
* @file rtc.c
* @version V3.00
* $Revision: 13 $
* $Date: 15/05/06 6:51p $
* @brief RTC driver source file
*
* @note
* SPDX-License-Identifier: Apache-2.0
* Copyright (C) 2013 Nuvoton Technology Corp. All rights reserved.
*****************************************************************************/
#include "NUC200Series.h"
/// @cond HIDDEN_SYMBOLS
/*---------------------------------------------------------------------------------------------------------*/
/* Macro, type and constant definitions */
/*---------------------------------------------------------------------------------------------------------*/
#define RTC_GLOBALS
/*---------------------------------------------------------------------------------------------------------*/
/* Global file scope (static) variables */
/*---------------------------------------------------------------------------------------------------------*/
static volatile uint32_t g_u32hiYear, g_u32loYear, g_u32hiMonth, g_u32loMonth, g_u32hiDay, g_u32loDay;
static volatile uint32_t g_u32hiHour, g_u32loHour, g_u32hiMin, g_u32loMin, g_u32hiSec, g_u32loSec;
/// @endcond HIDDEN_SYMBOLS
/** @addtogroup Standard_Driver Standard Driver
@{
*/
/** @addtogroup RTC_Driver RTC Driver
@{
*/
/** @addtogroup RTC_EXPORTED_FUNCTIONS RTC Exported Functions
@{
*/
/**
* @brief Initialize RTC setting and start counting
*
* @param[in] sPt Specify the time property and current date and time. It includes: \n
* u32Year: Year value. \n
* u32Month: Month value. \n
* u32Day: Day value. \n
* u32DayOfWeek: Day of the week. [RTC_SUNDAY / RTC_MONDAY / RTC_TUESDAY /
* RTC_WEDNESDAY / RTC_THURSDAY / RTC_FRIDAY /
* RTC_SATURDAY] \n
* u32Hour: Hour value. \n
* u32Minute: Minute value. \n
* u32Second: Second value. \n
* u32TimeScale: [RTC_CLOCK_12 / RTC_CLOCK_24] \n
* u8AmPm: [RTC_AM / RTC_PM] \n
*
* @return None
*
* @details This function is used to: \n
* 1. Write initial key to let RTC start count. \n
* 2. Input parameter indicates start date/time. \n
* @note Null pointer for using default starting date/time.
*/
void RTC_Open(S_RTC_TIME_DATA_T *sPt)
{
RTC->INIR = RTC_INIT_KEY;
if(RTC->INIR != 0x1)
{
RTC->INIR = RTC_INIT_KEY;
while(RTC->INIR != 0x1);
}
if(sPt == NULL)
return ;
/* Set RTC date and time */
RTC_SetDateAndTime(sPt);
/* Waiting for RTC settings stable */
while((RTC->AER & RTC_AER_ENF_Msk) == RTC_AER_ENF_Msk);
}
/**
* @brief Disable RTC Clock
*
* @param None
*
* @return None
*
* @details This API disable RTC peripheral clock and stops RTC counting.
*/
void RTC_Close(void)
{
CLK->APBCLK &= ~CLK_APBCLK_RTC_EN_Msk;
}
/**
* @brief Set 32k Frequency Compensation Data
*
* @param[in] i32FrequencyX100 Specify the RTC clock X100, ex: 3277365 means 32773.65.
*
* @return None
*
* @details This API is used to compensate the 32 kHz frequency by current LXT frequency for RTC application.
*/
void RTC_32KCalibration(int32_t i32FrequencyX100)
{
int32_t i32RegInt, i32RegFra;
/* Compute integer and fraction for RTC FCR register */
i32RegInt = (i32FrequencyX100 / 100) - RTC_FCR_REFERENCE;
i32RegFra = (((i32FrequencyX100 % 100)) * 60) / 100;
/* Judge Integer part is reasonable */
if((i32RegInt < 0) | (i32RegInt > 15))
{
return ;
}
RTC_WaitAccessEnable();
RTC->FCR = (uint32_t)((i32RegInt << 8) | i32RegFra);
}
/**
* @brief Get Current RTC Date and Time
*
* @param[out] sPt The returned pointer is specified the current RTC value. It includes: \n
* u32Year: Year value \n
* u32Month: Month value \n
* u32Day: Day value \n
* u32DayOfWeek: Day of week \n
* u32Hour: Hour value \n
* u32Minute: Minute value \n
* u32Second: Second value \n
* u32TimeScale: [RTC_CLOCK_12 / RTC_CLOCK_24] \n
* u8AmPm: [RTC_AM / RTC_PM] \n
*
* @return None
*
* @details This API is used to get the current RTC date and time value.
*/
void RTC_GetDateAndTime(S_RTC_TIME_DATA_T *sPt)
{
uint32_t u32Tmp;
sPt->u32TimeScale = RTC->TSSR & RTC_TSSR_24H_12H_Msk; /* 12/24-hour */
sPt->u32DayOfWeek = RTC->DWR & RTC_DWR_DWR_Msk; /* Day of the week */
/* Get [Date digit] data */
g_u32hiYear = (RTC->CLR & RTC_CLR_10YEAR_Msk) >> RTC_CLR_10YEAR_Pos;
g_u32loYear = (RTC->CLR & RTC_CLR_1YEAR_Msk) >> RTC_CLR_1YEAR_Pos;
g_u32hiMonth = (RTC->CLR & RTC_CLR_10MON_Msk) >> RTC_CLR_10MON_Pos;
g_u32loMonth = (RTC->CLR & RTC_CLR_1MON_Msk) >> RTC_CLR_1MON_Pos;
g_u32hiDay = (RTC->CLR & RTC_CLR_10DAY_Msk) >> RTC_CLR_10DAY_Pos;
g_u32loDay = (RTC->CLR & RTC_CLR_1DAY_Msk);
/* Get [Time digit] data */
g_u32hiHour = (RTC->TLR & RTC_TLR_10HR_Msk) >> RTC_TLR_10HR_Pos;
g_u32loHour = (RTC->TLR & RTC_TLR_1HR_Msk) >> RTC_TLR_1HR_Pos;
g_u32hiMin = (RTC->TLR & RTC_TLR_10MIN_Msk) >> RTC_TLR_10MIN_Pos;
g_u32loMin = (RTC->TLR & RTC_TLR_1MIN_Msk) >> RTC_TLR_1MIN_Pos;
g_u32hiSec = (RTC->TLR & RTC_TLR_10SEC_Msk) >> RTC_TLR_10SEC_Pos;
g_u32loSec = (RTC->TLR & RTC_TLR_1SEC_Msk);
/* Compute to 20XX year */
u32Tmp = (g_u32hiYear * 10);
u32Tmp += g_u32loYear;
sPt->u32Year = u32Tmp + RTC_YEAR2000;
/* Compute 0~12 month */
u32Tmp = (g_u32hiMonth * 10);
sPt->u32Month = u32Tmp + g_u32loMonth;
/* Compute 0~31 day */
u32Tmp = (g_u32hiDay * 10);
sPt->u32Day = u32Tmp + g_u32loDay;
/* Compute 12/24 hour */
if(sPt->u32TimeScale == RTC_CLOCK_12)
{
u32Tmp = (g_u32hiHour * 10);
u32Tmp += g_u32loHour;
sPt->u32Hour = u32Tmp; /* AM: 1~12. PM: 21~32. */
if(sPt->u32Hour >= 21)
{
sPt->u32AmPm = RTC_PM;
sPt->u32Hour -= 20;
}
else
{
sPt->u32AmPm = RTC_AM;
}
u32Tmp = (g_u32hiMin * 10);
u32Tmp += g_u32loMin;
sPt->u32Minute = u32Tmp;
u32Tmp = (g_u32hiSec * 10);
u32Tmp += g_u32loSec;
sPt->u32Second = u32Tmp;
}
else
{
u32Tmp = (g_u32hiHour * 10);
u32Tmp += g_u32loHour;
sPt->u32Hour = u32Tmp;
u32Tmp = (g_u32hiMin * 10);
u32Tmp += g_u32loMin;
sPt->u32Minute = u32Tmp;
u32Tmp = (g_u32hiSec * 10);
u32Tmp += g_u32loSec;
sPt->u32Second = u32Tmp;
}
}
/**
* @brief Get RTC Alarm Date and Time
*
* @param[out] sPt The returned pointer is specified the RTC alarm value. It includes: \n
* u32Year: Year value \n
* u32Month: Month value \n
* u32Day: Day value \n
* u32DayOfWeek: Day of week \n
* u32Hour: Hour value \n
* u32Minute: Minute value \n
* u32Second: Second value \n
* u32TimeScale: [RTC_CLOCK_12 / RTC_CLOCK_24] \n
* u8AmPm: [RTC_AM / RTC_PM] \n
*
* @return None
*
* @details This API is used to get the RTC alarm date and time setting.
*/
void RTC_GetAlarmDateAndTime(S_RTC_TIME_DATA_T *sPt)
{
uint32_t u32Tmp;
sPt->u32TimeScale = RTC->TSSR & RTC_TSSR_24H_12H_Msk; /* 12/24-hour */
sPt->u32DayOfWeek = RTC->DWR & RTC_DWR_DWR_Msk; /* Day of the week */
/* Get alarm [Date digit] data */
RTC_WaitAccessEnable();
g_u32hiYear = (RTC->CAR & RTC_CAR_10YEAR_Msk) >> RTC_CAR_10YEAR_Pos;
g_u32loYear = (RTC->CAR & RTC_CAR_1YEAR_Msk) >> RTC_CAR_1YEAR_Pos;
g_u32hiMonth = (RTC->CAR & RTC_CAR_10MON_Msk) >> RTC_CAR_10MON_Pos;
g_u32loMonth = (RTC->CAR & RTC_CAR_1MON_Msk) >> RTC_CAR_1MON_Pos;
g_u32hiDay = (RTC->CAR & RTC_CAR_10DAY_Msk) >> RTC_CAR_10DAY_Pos;
g_u32loDay = (RTC->CAR & RTC_CAR_1DAY_Msk);
/* Get alarm [Time digit] data */
RTC_WaitAccessEnable();
g_u32hiHour = (RTC->TAR & RTC_TAR_10HR_Msk) >> RTC_TAR_10HR_Pos;
g_u32loHour = (RTC->TAR & RTC_TAR_1HR_Msk) >> RTC_TAR_1HR_Pos;
g_u32hiMin = (RTC->TAR & RTC_TAR_10MIN_Msk) >> RTC_TAR_10MIN_Pos;
g_u32loMin = (RTC->TAR & RTC_TAR_1MIN_Msk) >> RTC_TAR_1MIN_Pos;
g_u32hiSec = (RTC->TAR & RTC_TAR_10SEC_Msk) >> RTC_TAR_10SEC_Pos;
g_u32loSec = (RTC->TAR & RTC_TAR_1SEC_Msk);
/* Compute to 20XX year */
u32Tmp = (g_u32hiYear * 10);
u32Tmp += g_u32loYear;
sPt->u32Year = u32Tmp + RTC_YEAR2000;
/* Compute 0~12 month */
u32Tmp = (g_u32hiMonth * 10);
sPt->u32Month = u32Tmp + g_u32loMonth;
/* Compute 0~31 day */
u32Tmp = (g_u32hiDay * 10);
sPt->u32Day = u32Tmp + g_u32loDay;
/* Compute 12/24 hour */
if(sPt->u32TimeScale == RTC_CLOCK_12)
{
u32Tmp = (g_u32hiHour * 10);
u32Tmp += g_u32loHour;
sPt->u32Hour = u32Tmp; /* AM: 1~12. PM: 21~32. */
if(sPt->u32Hour >= 21)
{
sPt->u32AmPm = RTC_PM;
sPt->u32Hour -= 20;
}
else
{
sPt->u32AmPm = RTC_AM;
}
u32Tmp = (g_u32hiMin * 10);
u32Tmp += g_u32loMin;
sPt->u32Minute = u32Tmp;
u32Tmp = (g_u32hiSec * 10);
u32Tmp += g_u32loSec;
sPt->u32Second = u32Tmp;
}
else
{
u32Tmp = (g_u32hiHour * 10);
u32Tmp += g_u32loHour;
sPt->u32Hour = u32Tmp;
u32Tmp = (g_u32hiMin * 10);
u32Tmp += g_u32loMin;
sPt->u32Minute = u32Tmp;
u32Tmp = (g_u32hiSec * 10);
u32Tmp += g_u32loSec;
sPt->u32Second = u32Tmp;
}
}
/**
* @brief Update Current RTC Date and Time
*
* @param[in] sPt Specify the time property and current date and time. It includes: \n
* u32Year: Year value. \n
* u32Month: Month value. \n
* u32Day: Day value. \n
* u32DayOfWeek: Day of the week. [RTC_SUNDAY / RTC_MONDAY / RTC_TUESDAY /
* RTC_WEDNESDAY / RTC_THURSDAY / RTC_FRIDAY /
* RTC_SATURDAY] \n
* u32Hour: Hour value. \n
* u32Minute: Minute value. \n
* u32Second: Second value. \n
* u32TimeScale: [RTC_CLOCK_12 / RTC_CLOCK_24] \n
* u8AmPm: [RTC_AM / RTC_PM] \n
*
* @return None
*
* @details This API is used to update current date and time to RTC.
*/
void RTC_SetDateAndTime(S_RTC_TIME_DATA_T *sPt)
{
uint32_t u32RegCLR, u32RegTLR;
if(sPt == NULL)
return ;
/*-----------------------------------------------------------------------------------------------------*/
/* Set RTC 24/12 hour setting and Day of the Week */
/*-----------------------------------------------------------------------------------------------------*/
RTC_WaitAccessEnable();
if(sPt->u32TimeScale == RTC_CLOCK_12)
{
RTC->TSSR &= ~RTC_TSSR_24H_12H_Msk;
/*-------------------------------------------------------------------------------------------------*/
/* Important, range of 12-hour PM mode is 21 up to 32 */
/*-------------------------------------------------------------------------------------------------*/
if(sPt->u32AmPm == RTC_PM)
sPt->u32Hour += 20;
}
else
{
RTC->TSSR |= RTC_TSSR_24H_12H_Msk;
}
/* Set Day of the Week */
RTC->DWR = sPt->u32DayOfWeek;
u32RegCLR = ((sPt->u32Year - RTC_YEAR2000) / 10) << 20;
u32RegCLR |= (((sPt->u32Year - RTC_YEAR2000) % 10) << 16);
u32RegCLR |= ((sPt->u32Month / 10) << 12);
u32RegCLR |= ((sPt->u32Month % 10) << 8);
u32RegCLR |= ((sPt->u32Day / 10) << 4);
u32RegCLR |= (sPt->u32Day % 10);
u32RegTLR = ((sPt->u32Hour / 10) << 20);
u32RegTLR |= ((sPt->u32Hour % 10) << 16);
u32RegTLR |= ((sPt->u32Minute / 10) << 12);
u32RegTLR |= ((sPt->u32Minute % 10) << 8);
u32RegTLR |= ((sPt->u32Second / 10) << 4);
u32RegTLR |= (sPt->u32Second % 10);
/*-----------------------------------------------------------------------------------------------------*/
/* Set RTC Calender and Time Loading */
/*-----------------------------------------------------------------------------------------------------*/
RTC_WaitAccessEnable();
RTC->CLR = (uint32_t)u32RegCLR;
RTC->TLR = (uint32_t)u32RegTLR;
}
/**
* @brief Update RTC Alarm Date and Time
*
* @param[in] sPt Specify the time property and alarm date and time. It includes: \n
* u32Year: Year value. \n
* u32Month: Month value. \n
* u32Day: Day value. \n
* u32DayOfWeek: Day of the week. [RTC_SUNDAY / RTC_MONDAY / RTC_TUESDAY /
* RTC_WEDNESDAY / RTC_THURSDAY / RTC_FRIDAY /
* RTC_SATURDAY] \n
* u32Hour: Hour value. \n
* u32Minute: Minute value. \n
* u32Second: Second value. \n
* u32TimeScale: [RTC_CLOCK_12 / RTC_CLOCK_24] \n
* u8AmPm: [RTC_AM / RTC_PM] \n
*
* @return None
*
* @details This API is used to update alarm date and time setting to RTC.
*/
void RTC_SetAlarmDateAndTime(S_RTC_TIME_DATA_T *sPt)
{
uint32_t u32RegCAR, u32RegTAR;
if(sPt == NULL)
return ;
/*-----------------------------------------------------------------------------------------------------*/
/* Set RTC 24/12 hour setting and Day of the Week */
/*-----------------------------------------------------------------------------------------------------*/
RTC_WaitAccessEnable();
if(sPt->u32TimeScale == RTC_CLOCK_12)
{
RTC->TSSR &= ~RTC_TSSR_24H_12H_Msk;
/*-------------------------------------------------------------------------------------------------*/
/* Important, range of 12-hour PM mode is 21 up to 32 */
/*-------------------------------------------------------------------------------------------------*/
if(sPt->u32AmPm == RTC_PM)
sPt->u32Hour += 20;
}
else
{
RTC->TSSR |= RTC_TSSR_24H_12H_Msk;
}
/* Set Day of the Week */
RTC->DWR = sPt->u32DayOfWeek;
/*-----------------------------------------------------------------------------------------------------*/
/* Set RTC Calender and Time Loading */
/*-----------------------------------------------------------------------------------------------------*/
u32RegCAR = ((sPt->u32Year - RTC_YEAR2000) / 10) << 20;
u32RegCAR |= (((sPt->u32Year - RTC_YEAR2000) % 10) << 16);
u32RegCAR |= ((sPt->u32Month / 10) << 12);
u32RegCAR |= ((sPt->u32Month % 10) << 8);
u32RegCAR |= ((sPt->u32Day / 10) << 4);
u32RegCAR |= (sPt->u32Day % 10);
u32RegTAR = ((sPt->u32Hour / 10) << 20);
u32RegTAR |= ((sPt->u32Hour % 10) << 16);
u32RegTAR |= ((sPt->u32Minute / 10) << 12);
u32RegTAR |= ((sPt->u32Minute % 10) << 8);
u32RegTAR |= ((sPt->u32Second / 10) << 4);
u32RegTAR |= (sPt->u32Second % 10);
RTC_WaitAccessEnable();
RTC->CAR = (uint32_t)u32RegCAR;
RTC->TAR = (uint32_t)u32RegTAR;
}
/**
* @brief Update RTC Current Date
*
* @param[in] u32Year The year calendar digit of current RTC setting.
* @param[in] u32Month The month calendar digit of current RTC setting.
* @param[in] u32Day The day calendar digit of current RTC setting.
* @param[in] u32DayOfWeek The Day of the week. [RTC_SUNDAY / RTC_MONDAY / RTC_TUESDAY /
* RTC_WEDNESDAY / RTC_THURSDAY / RTC_FRIDAY /
* RTC_SATURDAY]
*
* @return None
*
* @details This API is used to update current date to RTC.
*/
void RTC_SetDate(uint32_t u32Year, uint32_t u32Month, uint32_t u32Day, uint32_t u32DayOfWeek)
{
uint32_t u32RegCLR;
u32RegCLR = ((u32Year - RTC_YEAR2000) / 10) << 20;
u32RegCLR |= (((u32Year - RTC_YEAR2000) % 10) << 16);
u32RegCLR |= ((u32Month / 10) << 12);
u32RegCLR |= ((u32Month % 10) << 8);
u32RegCLR |= ((u32Day / 10) << 4);
u32RegCLR |= (u32Day % 10);
RTC_WaitAccessEnable();
/* Set Day of the Week */
RTC->DWR = u32DayOfWeek & RTC_DWR_DWR_Msk;
/* Set RTC Calender Loading */
RTC->CLR = (uint32_t)u32RegCLR;
}
/**
* @brief Update RTC Current Time
*
* @param[in] u32Hour The hour time digit of current RTC setting.
* @param[in] u32Minute The minute time digit of current RTC setting.
* @param[in] u32Second The second time digit of current RTC setting.
* @param[in] u32TimeMode The 24-Hour / 12-Hour Time Scale Selection. [RTC_CLOCK_12 / RTC_CLOCK_24]
* @param[in] u32AmPm 12-hour time scale with AM and PM indication. Only Time Scale select 12-hour used. [RTC_AM / RTC_PM]
*
* @return None
*
* @details This API is used to update current time to RTC.
*/
void RTC_SetTime(uint32_t u32Hour, uint32_t u32Minute, uint32_t u32Second, uint32_t u32TimeMode, uint32_t u32AmPm)
{
uint32_t u32RegTLR;
/* Important, range of 12-hour PM mode is 21 up to 32 */
if((u32TimeMode == RTC_CLOCK_12) && (u32AmPm == RTC_PM))
u32Hour += 20;
u32RegTLR = ((u32Hour / 10) << 20);
u32RegTLR |= ((u32Hour % 10) << 16);
u32RegTLR |= ((u32Minute / 10) << 12);
u32RegTLR |= ((u32Minute % 10) << 8);
u32RegTLR |= ((u32Second / 10) << 4);
u32RegTLR |= (u32Second % 10);
/*-----------------------------------------------------------------------------------------------------*/
/* Set RTC 24/12 hour setting and Day of the Week */
/*-----------------------------------------------------------------------------------------------------*/
RTC_WaitAccessEnable();
if(u32TimeMode == RTC_CLOCK_12)
{
RTC->TSSR &= ~RTC_TSSR_24H_12H_Msk;
}
else
{
RTC->TSSR |= RTC_TSSR_24H_12H_Msk;
}
RTC->TLR = (uint32_t)u32RegTLR;
}
/**
* @brief Update RTC Alarm Date
*
* @param[in] u32Year The year calendar digit of RTC alarm setting.
* @param[in] u32Month The month calendar digit of RTC alarm setting.
* @param[in] u32Day The day calendar digit of RTC alarm setting.
*
* @return None
*
* @details This API is used to update alarm date setting to RTC.
*/
void RTC_SetAlarmDate(uint32_t u32Year, uint32_t u32Month, uint32_t u32Day)
{
uint32_t u32RegCAR;
u32RegCAR = ((u32Year - RTC_YEAR2000) / 10) << 20;
u32RegCAR |= (((u32Year - RTC_YEAR2000) % 10) << 16);
u32RegCAR |= ((u32Month / 10) << 12);
u32RegCAR |= ((u32Month % 10) << 8);
u32RegCAR |= ((u32Day / 10) << 4);
u32RegCAR |= (u32Day % 10);
RTC_WaitAccessEnable();
/* Set RTC Alarm Date */
RTC->CAR = (uint32_t)u32RegCAR;
}
/**
* @brief Update RTC Alarm Time
*
* @param[in] u32Hour The hour time digit of RTC alarm setting.
* @param[in] u32Minute The minute time digit of RTC alarm setting.
* @param[in] u32Second The second time digit of RTC alarm setting.
* @param[in] u32TimeMode The 24-Hour / 12-Hour Time Scale Selection. [RTC_CLOCK_12 / RTC_CLOCK_24]
* @param[in] u32AmPm 12-hour time scale with AM and PM indication. Only Time Scale select 12-hour used. [RTC_AM / RTC_PM]
*
* @return None
*
* @details This API is used to update alarm time setting to RTC.
*/
void RTC_SetAlarmTime(uint32_t u32Hour, uint32_t u32Minute, uint32_t u32Second, uint32_t u32TimeMode, uint32_t u32AmPm)
{
uint32_t u32RegTAR;
/* Important, range of 12-hour PM mode is 21 up to 32 */
if((u32TimeMode == RTC_CLOCK_12) && (u32AmPm == RTC_PM))
u32Hour += 20;
u32RegTAR = ((u32Hour / 10) << 20);
u32RegTAR |= ((u32Hour % 10) << 16);
u32RegTAR |= ((u32Minute / 10) << 12);
u32RegTAR |= ((u32Minute % 10) << 8);
u32RegTAR |= ((u32Second / 10) << 4);
u32RegTAR |= (u32Second % 10);
/*-----------------------------------------------------------------------------------------------------*/
/* Set RTC 24/12 hour setting and Day of the Week */
/*-----------------------------------------------------------------------------------------------------*/
RTC_WaitAccessEnable();
if(u32TimeMode == RTC_CLOCK_12)
{
RTC->TSSR &= ~RTC_TSSR_24H_12H_Msk;
}
else
{
RTC->TSSR |= RTC_TSSR_24H_12H_Msk;
}
/* Set RTC Alarm Time */
RTC->TAR = (uint32_t)u32RegTAR;
}
/**
* @brief Get Day of the Week
*
* @param None
*
* @retval 0 Sunday
* @retval 1 Monday
* @retval 2 Tuesday
* @retval 3 Wednesday
* @retval 4 Thursday
* @retval 5 Friday
* @retval 6 Saturday
*
* @details This API is used to get day of the week of current RTC setting.
*/
uint32_t RTC_GetDayOfWeek(void)
{
return (RTC->DWR & RTC_DWR_DWR_Msk);
}
/**
* @brief Set RTC Tick Period Time
*
* @param[in] u32TickSelection It is used to set the RTC time tick period for Periodic Time Tick request. \n
* It consists of: \n
* RTC_TICK_1_SEC: Time tick is 1 second \n
* RTC_TICK_1_2_SEC: Time tick is 1/2 second \n
* RTC_TICK_1_4_SEC: Time tick is 1/4 second \n
* RTC_TICK_1_8_SEC: Time tick is 1/8 second \n
* RTC_TICK_1_16_SEC: Time tick is 1/16 second \n
* RTC_TICK_1_32_SEC: Time tick is 1/32 second \n
* RTC_TICK_1_64_SEC: Time tick is 1/64 second \n
* RTC_TICK_1_128_SEC: Time tick is 1/128 second
*
* @return None
*
* @details This API is used to set time tick period for periodic time tick interrupt.
*/
void RTC_SetTickPeriod(uint32_t u32TickSelection)
{
RTC_WaitAccessEnable();
RTC->TTR = (RTC->TTR & ~RTC_TTR_TTR_Msk) | u32TickSelection;
}
/**
* @brief Enable RTC Interrupt
*
* @param[in] u32IntFlagMask The structure of interrupt source. It consists of: \n
* RTC_RIER_AIER_Msk: Alarm interrupt \n
* RTC_RIER_TIER_Msk: Tick interrupt \n
* RTC_RIER_SNOOPIER_Msk: Snooper Pin Event Detection Interrupt \n
*
* @return None
*
* @details This API is used to enable the specify RTC interrupt function.
*/
void RTC_EnableInt(uint32_t u32IntFlagMask)
{
RTC->RIER |= u32IntFlagMask;
}
/**
* @brief Disable RTC Interrupt
*
* @param[in] u32IntFlagMask The structure of interrupt source. It consists of: \n
* RTC_RIER_AIER_Msk: Alarm interrupt \n
* RTC_RIER_TIER_Msk: Tick interrupt \n
* RTC_RIER_SNOOPIER_Msk: Snooper Pin Event Detection interrupt \n
*
* @return None
*
* @details This API is used to disable the specify RTC interrupt function.
*/
void RTC_DisableInt(uint32_t u32IntFlagMask)
{
if(u32IntFlagMask & RTC_RIER_TIER_Msk)
{
RTC->RIER &= ~RTC_RIER_TIER_Msk;
RTC->RIIR |= RTC_RIIR_TIF_Msk;
}
if(u32IntFlagMask & RTC_RIER_AIER_Msk)
{
RTC->RIER &= ~RTC_RIER_AIER_Msk;
RTC->RIIR |= RTC_RIIR_AIF_Msk;
}
if(u32IntFlagMask & RTC_RIER_SNOOPIER_Msk)
{
RTC->RIER &= ~RTC_RIER_SNOOPIER_Msk;
RTC->RIIR |= RTC_RIIR_SNOOPIF_Msk;
}
}
/**
* @brief Enable Spare Register
*
* @param None
*
* @return None
*
* @details This API is used to enable the spare register 0~19 can be accessed.
*/
void RTC_EnableSpareRegister(void)
{
RTC_WaitAccessEnable();
RTC->SPRCTL |= RTC_SPRCTL_SPREN_Msk;
while(!(RTC->SPRCTL & RTC_SPRCTL_SPRRDY_Msk));
}
/**
* @brief Disable Spare Register
*
* @param None
*
* @return None
*
* @details This API is used to disable the spare register 0~19 cannot be accessed.
*/
void RTC_DisableSpareRegister(void)
{
RTC_WaitAccessEnable();
RTC->SPRCTL &= ~RTC_SPRCTL_SPREN_Msk;
}
/**
* @brief Enable Snooper Pin Detect
*
* @param[in] u32PinCondition Snooper pin trigger condition. Possible options are
* - \ref RTC_SNOOPER_LOW_LEVEL
* - \ref RTC_SNOOPER_HIGH_LEVEL
* - \ref RTC_SNOOPER_FALLING_EDGE
* - \ref RTC_SNOOPER_RISING_EDGE
*
* @return None
*
* @details This API is used to enable the snooper pin detect function with specify trigger condition.
*/
void RTC_EnableSnooperDetection(uint32_t u32PinCondition)
{
RTC_WaitAccessEnable();
RTC->SPRCTL = ((RTC->SPRCTL & ~RTC_SNOOPER_DETECT_Msk) | u32PinCondition) | RTC_SPRCTL_SNOOPEN_Msk;
}
/**
* @brief Disable Snooper Pin Detect
*
* @param None
*
* @return None
*
* @details This API is used to disable the snooper pin detect function.
*/
void RTC_DisableSnooperDetection(void)
{
RTC_WaitAccessEnable();
RTC->SPRCTL &= ~RTC_SPRCTL_SNOOPEN_Msk;
}
/*@}*/ /* end of group RTC_EXPORTED_FUNCTIONS */
/*@}*/ /* end of group RTC_Driver */
/*@}*/ /* end of group Device_Driver */
/*** (C) COPYRIGHT 2013 Nuvoton Technology Corp. ***/