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rt-thread-official/bsp/ft32/libraries/FT32F0xx/FT32F0xx_Driver/Src/ft32f0xx_rtc.c

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/**
******************************************************************************
* @file ft32f0xx_rtc.c
* @author FMD AE
* @brief This file provides firmware functions to manage the following
* functionalities of the Real-Time Clock (RTC) peripheral:
* + Initialization
* + Calendar (Time and Date) configuration
* + Alarms (Alarm A) configuration
* + Daylight Saving configuration
* + Output pin Configuration
* + Digital Calibration configuration
* + TimeStamp configuration
* + Tampers configuration
* + Backup Data Registers configuration
* + Output Type Config configuration
* + Shift control synchronisation
* + Interrupts and flags management
* @version V1.0.0
* @data 2021-07-01
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "ft32f0xx_rtc.h"
/* Masks Definition */
#define RTC_TR_RESERVED_MASK ((uint32_t)0x007F7F7F)
#define RTC_DR_RESERVED_MASK ((uint32_t)0x00FFFF3F)
#define RTC_INIT_MASK ((uint32_t)0xFFFFFFFF)
#define RTC_RSF_MASK ((uint32_t)0xFFFFFF5F)
#define RTC_FLAGS_MASK ((uint32_t)(RTC_FLAG_TSOVF | RTC_FLAG_TSF | RTC_FLAG_ALRAF | \
RTC_FLAG_RSF | RTC_FLAG_INITS |RTC_FLAG_INITF | \
RTC_FLAG_TAMP1F | RTC_FLAG_TAMP2F | RTC_FLAG_RECALPF | \
RTC_FLAG_SHPF))
#define INITMODE_TIMEOUT ((uint32_t) 0x00004000)
#define SYNCHRO_TIMEOUT ((uint32_t) 0x00008000)
#define RECALPF_TIMEOUT ((uint32_t) 0x00001000)
#define SHPF_TIMEOUT ((uint32_t) 0x00001000)
static uint8_t RTC_ByteToBcd2(uint8_t Value);
static uint8_t RTC_Bcd2ToByte(uint8_t Value);
/**
* @brief Deinitializes the RTC registers to their default reset values.
* @note This function doesn't reset the RTC Clock source and RTC Backup Data
* registers.
* @param None
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC registers are deinitialized
* - ERROR: RTC registers are not deinitialized
*/
ErrorStatus RTC_DeInit(void)
{
ErrorStatus status = ERROR;
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Set Initialization mode */
if (RTC_EnterInitMode() == ERROR)
{
status = ERROR;
}
else
{
/* Reset TR, DR and CR registers */
RTC->TR = (uint32_t)0x00000000;
RTC->DR = (uint32_t)0x00002101;
RTC->CR &= (uint32_t)0x00000000;
RTC->PRER = (uint32_t)0x007F00FF;
RTC->ALRMAR = (uint32_t)0x00000000;
RTC->SHIFTR = (uint32_t)0x00000000;
RTC->CALR = (uint32_t)0x00000000;
RTC->ALRMASSR = (uint32_t)0x00000000;
/* Reset ISR register and exit initialization mode */
RTC->ISR = (uint32_t)0x00000000;
/* Reset Tamper and alternate functions configuration register */
RTC->TAFCR = 0x00000000;
/* Wait till the RTC RSF flag is set */
if (RTC_WaitForSynchro() == ERROR)
{
status = ERROR;
}
else
{
status = SUCCESS;
}
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return status;
}
/**
* @brief Initializes the RTC registers according to the specified parameters
* in RTC_InitStruct.
* @param RTC_InitStruct: pointer to a RTC_InitTypeDef structure that contains
* the configuration information for the RTC peripheral.
* @note The RTC Prescaler register is write protected and can be written in
* initialization mode only.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC registers are initialized
* - ERROR: RTC registers are not initialized
*/
ErrorStatus RTC_Init(RTC_InitTypeDef* RTC_InitStruct)
{
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_RTC_HOUR_FORMAT(RTC_InitStruct->RTC_HourFormat));
assert_param(IS_RTC_ASYNCH_PREDIV(RTC_InitStruct->RTC_AsynchPrediv));
assert_param(IS_RTC_SYNCH_PREDIV(RTC_InitStruct->RTC_SynchPrediv));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Set Initialization mode */
if (RTC_EnterInitMode() == ERROR)
{
status = ERROR;
}
else
{
/* Clear RTC CR FMT Bit */
RTC->CR &= ((uint32_t)~(RTC_CR_FMT));
/* Set RTC_CR register */
RTC->CR |= ((uint32_t)(RTC_InitStruct->RTC_HourFormat));
/* Configure the RTC PRER */
RTC->PRER = (uint32_t)(RTC_InitStruct->RTC_SynchPrediv);
RTC->PRER |= (uint32_t)(RTC_InitStruct->RTC_AsynchPrediv << 16);
/* Exit Initialization mode */
RTC_ExitInitMode();
status = SUCCESS;
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return status;
}
/**
* @brief Fills each RTC_InitStruct member with its default value.
* @param RTC_InitStruct: pointer to a RTC_InitTypeDef structure which will be
* initialized.
* @retval None
*/
void RTC_StructInit(RTC_InitTypeDef* RTC_InitStruct)
{
/* Initialize the RTC_HourFormat member */
RTC_InitStruct->RTC_HourFormat = RTC_HourFormat_24;
/* Initialize the RTC_AsynchPrediv member */
RTC_InitStruct->RTC_AsynchPrediv = (uint32_t)0x7F;
/* Initialize the RTC_SynchPrediv member */
RTC_InitStruct->RTC_SynchPrediv = (uint32_t)0xFF;
}
/**
* @brief Enables or disables the RTC registers write protection.
* @note All the RTC registers are write protected except for RTC_ISR[13:8],
* RTC_TAFCR and RTC_BKPxR.
* @note Writing a wrong key reactivates the write protection.
* @note The protection mechanism is not affected by system reset.
* @param NewState: new state of the write protection.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_WriteProtectionCmd(FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
else
{
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
}
}
/**
* @brief Enters the RTC Initialization mode.
* @note The RTC Initialization mode is write protected, use the
* RTC_WriteProtectionCmd(DISABLE) before calling this function.
* @param None
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC is in Init mode
* - ERROR: RTC is not in Init mode
*/
ErrorStatus RTC_EnterInitMode(void)
{
__IO uint32_t initcounter = 0x00;
ErrorStatus status = ERROR;
uint32_t initstatus = 0x00;
/* Check if the Initialization mode is set */
if ((RTC->ISR & RTC_ISR_INITF) == (uint32_t)RESET)
{
/* Set the Initialization mode */
RTC->ISR = (uint32_t)RTC_INIT_MASK;
/* Wait till RTC is in INIT state and if Time out is reached exit */
do
{
initstatus = RTC->ISR & RTC_ISR_INITF;
initcounter++;
} while((initcounter != INITMODE_TIMEOUT) && (initstatus == 0x00));
if ((RTC->ISR & RTC_ISR_INITF) != RESET)
{
status = SUCCESS;
}
else
{
status = ERROR;
}
}
else
{
status = SUCCESS;
}
return (status);
}
/**
* @brief Exits the RTC Initialization mode.
* @note When the initialization sequence is complete, the calendar restarts
* counting after 4 RTCCLK cycles.
* @note The RTC Initialization mode is write protected, use the
* RTC_WriteProtectionCmd(DISABLE) before calling this function.
* @param None
* @retval None
*/
void RTC_ExitInitMode(void)
{
/* Exit Initialization mode */
RTC->ISR &= (uint32_t)~RTC_ISR_INIT;
/*when BypassShadow is enable,this bit should wait to clear zero.edit:2020.5.23*/
while((RTC->ISR & RTC_ISR_INITF) != RESET)
{
;
}
}
/**
* @brief Waits until the RTC Time and Date registers (RTC_TR and RTC_DR) are
* synchronized with RTC APB clock.
* @note The RTC Resynchronization mode is write protected, use the
* RTC_WriteProtectionCmd(DISABLE) before calling this function.
* @note To read the calendar through the shadow registers after Calendar
* initialization, calendar update or after wakeup from low power modes
* the software must first clear the RSF flag.
* The software must then wait until it is set again before reading
* the calendar, which means that the calendar registers have been
* correctly copied into the RTC_TR and RTC_DR shadow registers.
* @param None
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC registers are synchronised
* - ERROR: RTC registers are not synchronised
*/
ErrorStatus RTC_WaitForSynchro(void)
{
__IO uint32_t synchrocounter = 0;
ErrorStatus status = ERROR;
uint32_t synchrostatus = 0x00;
if ((RTC->CR & RTC_CR_BYPSHAD) != RESET)
{
/* Bypass shadow mode */
status = SUCCESS;
}
else
{
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Clear RSF flag */
RTC->ISR &= (uint32_t)RTC_RSF_MASK;
/* Wait the registers to be synchronised */
do
{
synchrostatus = RTC->ISR & RTC_ISR_RSF;
synchrocounter++;
} while((synchrocounter != SYNCHRO_TIMEOUT) && (synchrostatus == 0x00));
if ((RTC->ISR & RTC_ISR_RSF) != RESET)
{
status = SUCCESS;
}
else
{
status = ERROR;
}
/* Disable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
return (status);
}
/**
* @brief Enables or disables the RTC reference clock detection.
* @param NewState: new state of the RTC reference clock.
* This parameter can be: ENABLE or DISABLE.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC reference clock detection is enabled
* - ERROR: RTC reference clock detection is disabled
*/
ErrorStatus RTC_RefClockCmd(FunctionalState NewState)
{
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Set Initialization mode */
if (RTC_EnterInitMode() == ERROR)
{
status = ERROR;
}
else
{
if (NewState != DISABLE)
{
/* Enable the RTC reference clock detection */
RTC->CR |= RTC_CR_REFCKON;
}
else
{
/* Disable the RTC reference clock detection */
RTC->CR &= ~RTC_CR_REFCKON;
}
/* Exit Initialization mode */
RTC_ExitInitMode();
status = SUCCESS;
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return status;
}
/**
* @brief Enables or Disables the Bypass Shadow feature.
* @note When the Bypass Shadow is enabled the calendar value are taken
* directly from the Calendar counter.
* @param NewState: new state of the Bypass Shadow feature.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_BypassShadowCmd(FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
if (NewState != DISABLE)
{
/* Set the BYPSHAD bit */
RTC->CR |= (uint8_t)RTC_CR_BYPSHAD;
}
else
{
/* Reset the BYPSHAD bit */
RTC->CR &= (uint8_t)~RTC_CR_BYPSHAD;
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @}
*/
/**
* @brief Set the RTC current time.
* @param RTC_Format: specifies the format of the entered parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_TimeStruct: pointer to a RTC_TimeTypeDef structure that contains
* the time configuration information for the RTC.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC Time register is configured
* - ERROR: RTC Time register is not configured
*/
ErrorStatus RTC_SetTime(uint32_t RTC_Format, RTC_TimeTypeDef* RTC_TimeStruct)
{
uint32_t tmpreg = 0;
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
if (RTC_Format == RTC_Format_BIN)
{
if ((RTC->CR & RTC_CR_FMT) != (uint32_t)RESET)
{
assert_param(IS_RTC_HOUR12(RTC_TimeStruct->RTC_Hours));
assert_param(IS_RTC_H12(RTC_TimeStruct->RTC_H12));
}
else
{
RTC_TimeStruct->RTC_H12 = 0x00;
assert_param(IS_RTC_HOUR24(RTC_TimeStruct->RTC_Hours));
}
assert_param(IS_RTC_MINUTES(RTC_TimeStruct->RTC_Minutes));
assert_param(IS_RTC_SECONDS(RTC_TimeStruct->RTC_Seconds));
}
else
{
if ((RTC->CR & RTC_CR_FMT) != (uint32_t)RESET)
{
tmpreg = RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Hours);
assert_param(IS_RTC_HOUR12(tmpreg));
assert_param(IS_RTC_H12(RTC_TimeStruct->RTC_H12));
}
else
{
RTC_TimeStruct->RTC_H12 = 0x00;
assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Hours)));
}
assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Minutes)));
assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Seconds)));
}
/* Check the input parameters format */
if (RTC_Format != RTC_Format_BIN)
{
tmpreg = (((uint32_t)(RTC_TimeStruct->RTC_Hours) << 16) | \
((uint32_t)(RTC_TimeStruct->RTC_Minutes) << 8) | \
((uint32_t)RTC_TimeStruct->RTC_Seconds) | \
((uint32_t)(RTC_TimeStruct->RTC_H12) << 16));
}
else
{
tmpreg = (uint32_t)(((uint32_t)RTC_ByteToBcd2(RTC_TimeStruct->RTC_Hours) << 16) | \
((uint32_t)RTC_ByteToBcd2(RTC_TimeStruct->RTC_Minutes) << 8) | \
((uint32_t)RTC_ByteToBcd2(RTC_TimeStruct->RTC_Seconds)) | \
(((uint32_t)RTC_TimeStruct->RTC_H12) << 16));
}
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Set Initialization mode */
if (RTC_EnterInitMode() == ERROR)
{
status = ERROR;
}
else
{
/* Set the RTC_TR register */
RTC->TR = (uint32_t)(tmpreg & RTC_TR_RESERVED_MASK);
/* Exit Initialization mode */
RTC_ExitInitMode();
/* If RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
if ((RTC->CR & RTC_CR_BYPSHAD) == RESET)
{
if (RTC_WaitForSynchro() == ERROR)
{
status = ERROR;
}
else
{
status = SUCCESS;
}
}
else
{
status = SUCCESS;
}
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return status;
}
/**
* @brief Fills each RTC_TimeStruct member with its default value
* (Time = 00h:00min:00sec).
* @param RTC_TimeStruct: pointer to a RTC_TimeTypeDef structure which will be
* initialized.
* @retval None
*/
void RTC_TimeStructInit(RTC_TimeTypeDef* RTC_TimeStruct)
{
/* Time = 00h:00min:00sec */
RTC_TimeStruct->RTC_H12 = RTC_H12_AM;
RTC_TimeStruct->RTC_Hours = 0;
RTC_TimeStruct->RTC_Minutes = 0;
RTC_TimeStruct->RTC_Seconds = 0;
}
/**
* @brief Get the RTC current Time.
* @param RTC_Format: specifies the format of the returned parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_TimeStruct: pointer to a RTC_TimeTypeDef structure that will
* contain the returned current time configuration.
* @retval None
*/
void RTC_GetTime(uint32_t RTC_Format, RTC_TimeTypeDef* RTC_TimeStruct)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
/* Get the RTC_TR register */
tmpreg = (uint32_t)(RTC->TR & RTC_TR_RESERVED_MASK);
/* Fill the structure fields with the read parameters */
RTC_TimeStruct->RTC_Hours = (uint8_t)((tmpreg & (RTC_TR_HT | RTC_TR_HU)) >> 16);
RTC_TimeStruct->RTC_Minutes = (uint8_t)((tmpreg & (RTC_TR_MNT | RTC_TR_MNU)) >>8);
RTC_TimeStruct->RTC_Seconds = (uint8_t)(tmpreg & (RTC_TR_ST | RTC_TR_SU));
RTC_TimeStruct->RTC_H12 = (uint8_t)((tmpreg & (RTC_TR_PM)) >> 16);
/* Check the input parameters format */
if (RTC_Format == RTC_Format_BIN)
{
/* Convert the structure parameters to Binary format */
RTC_TimeStruct->RTC_Hours = (uint8_t)RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Hours);
RTC_TimeStruct->RTC_Minutes = (uint8_t)RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Minutes);
RTC_TimeStruct->RTC_Seconds = (uint8_t)RTC_Bcd2ToByte(RTC_TimeStruct->RTC_Seconds);
}
}
/**
* @brief Gets the RTC current Calendar Subseconds value.
* @note This function freeze the Time and Date registers after reading the
* SSR register.
* @param None
* @retval RTC current Calendar Subseconds value.
*/
uint32_t RTC_GetSubSecond(void)
{
uint32_t tmpreg = 0;
/* Get subseconds values from the correspondent registers*/
tmpreg = (uint32_t)(RTC->SSR);
/* Read DR register to unfroze calendar registers */
(void) (RTC->DR);
return (tmpreg);
}
/**
* @brief Set the RTC current date.
* @param RTC_Format: specifies the format of the entered parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_DateStruct: pointer to a RTC_DateTypeDef structure that contains
* the date configuration information for the RTC.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC Date register is configured
* - ERROR: RTC Date register is not configured
*/
ErrorStatus RTC_SetDate(uint32_t RTC_Format, RTC_DateTypeDef* RTC_DateStruct)
{
uint32_t tmpreg = 0;
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
if ((RTC_Format == RTC_Format_BIN) && ((RTC_DateStruct->RTC_Month & 0x10) == 0x10))
{
RTC_DateStruct->RTC_Month = (RTC_DateStruct->RTC_Month & (uint32_t)~(0x10)) + 0x0A;
}
if (RTC_Format == RTC_Format_BIN)
{
assert_param(IS_RTC_YEAR(RTC_DateStruct->RTC_Year));
assert_param(IS_RTC_MONTH(RTC_DateStruct->RTC_Month));
assert_param(IS_RTC_DATE(RTC_DateStruct->RTC_Date));
}
else
{
assert_param(IS_RTC_YEAR(RTC_Bcd2ToByte(RTC_DateStruct->RTC_Year)));
tmpreg = RTC_Bcd2ToByte(RTC_DateStruct->RTC_Month);
assert_param(IS_RTC_MONTH(tmpreg));
tmpreg = RTC_Bcd2ToByte(RTC_DateStruct->RTC_Date);
assert_param(IS_RTC_DATE(tmpreg));
}
assert_param(IS_RTC_WEEKDAY(RTC_DateStruct->RTC_WeekDay));
/* Check the input parameters format */
if (RTC_Format != RTC_Format_BIN)
{
tmpreg = ((((uint32_t)RTC_DateStruct->RTC_Year) << 16) | \
(((uint32_t)RTC_DateStruct->RTC_Month) << 8) | \
((uint32_t)RTC_DateStruct->RTC_Date) | \
(((uint32_t)RTC_DateStruct->RTC_WeekDay) << 13));
}
else
{
tmpreg = (((uint32_t)RTC_ByteToBcd2(RTC_DateStruct->RTC_Year) << 16) | \
((uint32_t)RTC_ByteToBcd2(RTC_DateStruct->RTC_Month) << 8) | \
((uint32_t)RTC_ByteToBcd2(RTC_DateStruct->RTC_Date)) | \
((uint32_t)RTC_DateStruct->RTC_WeekDay << 13));
}
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Set Initialization mode */
if (RTC_EnterInitMode() == ERROR)
{
status = ERROR;
}
else
{
/* Set the RTC_DR register */
RTC->DR = (uint32_t)(tmpreg & RTC_DR_RESERVED_MASK);
/* Exit Initialization mode */
RTC_ExitInitMode();
/* If RTC_CR_BYPSHAD bit = 0, wait for synchro else this check is not needed */
if ((RTC->CR & RTC_CR_BYPSHAD) == RESET)
{
if (RTC_WaitForSynchro() == ERROR)
{
status = ERROR;
}
else
{
status = SUCCESS;
}
}
else
{
status = SUCCESS;
}
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return status;
}
/**
* @brief Fills each RTC_DateStruct member with its default value
* (Monday, January 01 xx00).
* @param RTC_DateStruct: pointer to a RTC_DateTypeDef structure which will be
* initialized.
* @retval None
*/
void RTC_DateStructInit(RTC_DateTypeDef* RTC_DateStruct)
{
/* Monday, January 01 xx00 */
RTC_DateStruct->RTC_WeekDay = RTC_Weekday_Monday;
RTC_DateStruct->RTC_Date = 1;
RTC_DateStruct->RTC_Month = RTC_Month_January;
RTC_DateStruct->RTC_Year = 0;
}
/**
* @brief Get the RTC current date.
* @param RTC_Format: specifies the format of the returned parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_DateStruct: pointer to a RTC_DateTypeDef structure that will
* contain the returned current date configuration.
* @retval None
*/
void RTC_GetDate(uint32_t RTC_Format, RTC_DateTypeDef* RTC_DateStruct)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
/* Get the RTC_TR register */
tmpreg = (uint32_t)(RTC->DR & RTC_DR_RESERVED_MASK);
/* Fill the structure fields with the read parameters */
RTC_DateStruct->RTC_Year = (uint8_t)((tmpreg & (RTC_DR_YT | RTC_DR_YU)) >> 16);
RTC_DateStruct->RTC_Month = (uint8_t)((tmpreg & (RTC_DR_MT | RTC_DR_MU)) >> 8);
RTC_DateStruct->RTC_Date = (uint8_t)(tmpreg & (RTC_DR_DT | RTC_DR_DU));
RTC_DateStruct->RTC_WeekDay = (uint8_t)((tmpreg & (RTC_DR_WDU)) >> 13);
/* Check the input parameters format */
if (RTC_Format == RTC_Format_BIN)
{
/* Convert the structure parameters to Binary format */
RTC_DateStruct->RTC_Year = (uint8_t)RTC_Bcd2ToByte(RTC_DateStruct->RTC_Year);
RTC_DateStruct->RTC_Month = (uint8_t)RTC_Bcd2ToByte(RTC_DateStruct->RTC_Month);
RTC_DateStruct->RTC_Date = (uint8_t)RTC_Bcd2ToByte(RTC_DateStruct->RTC_Date);
RTC_DateStruct->RTC_WeekDay = (uint8_t)(RTC_DateStruct->RTC_WeekDay);
}
}
/**
* @}
*/
/**
* @brief Set the specified RTC Alarm.
* @note The Alarm register can only be written when the corresponding Alarm
* is disabled (Use the RTC_AlarmCmd(DISABLE)).
* @param RTC_Format: specifies the format of the returned parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_Alarm: specifies the alarm to be configured.
* This parameter can be one of the following values:
* @arg RTC_Alarm_A: to select Alarm A
* @param RTC_AlarmStruct: pointer to a RTC_AlarmTypeDef structure that
* contains the alarm configuration parameters.
* @retval None
*/
void RTC_SetAlarm(uint32_t RTC_Format, uint32_t RTC_Alarm, RTC_AlarmTypeDef* RTC_AlarmStruct)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
assert_param(IS_RTC_ALARM(RTC_Alarm));
assert_param(IS_RTC_ALARM_MASK(RTC_AlarmStruct->RTC_AlarmMask));
assert_param(IS_RTC_ALARM_DATE_WEEKDAY_SEL(RTC_AlarmStruct->RTC_AlarmDateWeekDaySel));
if (RTC_Format == RTC_Format_BIN)
{
if ((RTC->CR & RTC_CR_FMT) != (uint32_t)RESET)
{
assert_param(IS_RTC_HOUR12(RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours));
assert_param(IS_RTC_H12(RTC_AlarmStruct->RTC_AlarmTime.RTC_H12));
}
else
{
RTC_AlarmStruct->RTC_AlarmTime.RTC_H12 = 0x00;
assert_param(IS_RTC_HOUR24(RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours));
}
assert_param(IS_RTC_MINUTES(RTC_AlarmStruct->RTC_AlarmTime.RTC_Minutes));
assert_param(IS_RTC_SECONDS(RTC_AlarmStruct->RTC_AlarmTime.RTC_Seconds));
if(RTC_AlarmStruct->RTC_AlarmDateWeekDaySel == RTC_AlarmDateWeekDaySel_Date)
{
assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(RTC_AlarmStruct->RTC_AlarmDateWeekDay));
}
else
{
assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(RTC_AlarmStruct->RTC_AlarmDateWeekDay));
}
}
else
{
if ((RTC->CR & RTC_CR_FMT) != (uint32_t)RESET)
{
tmpreg = RTC_Bcd2ToByte(RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours);
assert_param(IS_RTC_HOUR12(tmpreg));
assert_param(IS_RTC_H12(RTC_AlarmStruct->RTC_AlarmTime.RTC_H12));
}
else
{
RTC_AlarmStruct->RTC_AlarmTime.RTC_H12 = 0x00;
assert_param(IS_RTC_HOUR24(RTC_Bcd2ToByte(RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours)));
}
assert_param(IS_RTC_MINUTES(RTC_Bcd2ToByte(RTC_AlarmStruct->RTC_AlarmTime.RTC_Minutes)));
assert_param(IS_RTC_SECONDS(RTC_Bcd2ToByte(RTC_AlarmStruct->RTC_AlarmTime.RTC_Seconds)));
if(RTC_AlarmStruct->RTC_AlarmDateWeekDaySel == RTC_AlarmDateWeekDaySel_Date)
{
tmpreg = RTC_Bcd2ToByte(RTC_AlarmStruct->RTC_AlarmDateWeekDay);
assert_param(IS_RTC_ALARM_DATE_WEEKDAY_DATE(tmpreg));
}
else
{
tmpreg = RTC_Bcd2ToByte(RTC_AlarmStruct->RTC_AlarmDateWeekDay);
assert_param(IS_RTC_ALARM_DATE_WEEKDAY_WEEKDAY(tmpreg));
}
}
/* Check the input parameters format */
if (RTC_Format != RTC_Format_BIN)
{
tmpreg = (((uint32_t)(RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours) << 16) | \
((uint32_t)(RTC_AlarmStruct->RTC_AlarmTime.RTC_Minutes) << 8) | \
((uint32_t)RTC_AlarmStruct->RTC_AlarmTime.RTC_Seconds) | \
((uint32_t)(RTC_AlarmStruct->RTC_AlarmTime.RTC_H12) << 16) | \
((uint32_t)(RTC_AlarmStruct->RTC_AlarmDateWeekDay) << 24) | \
((uint32_t)RTC_AlarmStruct->RTC_AlarmDateWeekDaySel) | \
((uint32_t)RTC_AlarmStruct->RTC_AlarmMask));
}
else
{
tmpreg = (((uint32_t)RTC_ByteToBcd2(RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours) << 16) | \
((uint32_t)RTC_ByteToBcd2(RTC_AlarmStruct->RTC_AlarmTime.RTC_Minutes) << 8) | \
((uint32_t)RTC_ByteToBcd2(RTC_AlarmStruct->RTC_AlarmTime.RTC_Seconds)) | \
((uint32_t)(RTC_AlarmStruct->RTC_AlarmTime.RTC_H12) << 16) | \
((uint32_t)RTC_ByteToBcd2(RTC_AlarmStruct->RTC_AlarmDateWeekDay) << 24) | \
((uint32_t)RTC_AlarmStruct->RTC_AlarmDateWeekDaySel) | \
((uint32_t)RTC_AlarmStruct->RTC_AlarmMask));
}
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Configure the Alarm register */
RTC->ALRMAR = (uint32_t)tmpreg;
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @brief Fills each RTC_AlarmStruct member with its default value
* (Time = 00h:00mn:00sec / Date = 1st day of the month/Mask =
* all fields are masked).
* @param RTC_AlarmStruct: pointer to a @ref RTC_AlarmTypeDef structure which
* will be initialized.
* @retval None
*/
void RTC_AlarmStructInit(RTC_AlarmTypeDef* RTC_AlarmStruct)
{
/* Alarm Time Settings : Time = 00h:00mn:00sec */
RTC_AlarmStruct->RTC_AlarmTime.RTC_H12 = RTC_H12_AM;
RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours = 0;
RTC_AlarmStruct->RTC_AlarmTime.RTC_Minutes = 0;
RTC_AlarmStruct->RTC_AlarmTime.RTC_Seconds = 0;
/* Alarm Date Settings : Date = 1st day of the month */
RTC_AlarmStruct->RTC_AlarmDateWeekDaySel = RTC_AlarmDateWeekDaySel_Date;
RTC_AlarmStruct->RTC_AlarmDateWeekDay = 1;
/* Alarm Masks Settings : Mask = all fields are not masked */
RTC_AlarmStruct->RTC_AlarmMask = RTC_AlarmMask_None;
}
/**
* @brief Get the RTC Alarm value and masks.
* @param RTC_Format: specifies the format of the output parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_Alarm: specifies the alarm to be read.
* This parameter can be one of the following values:
* @arg RTC_Alarm_A: to select Alarm A
* @param RTC_AlarmStruct: pointer to a RTC_AlarmTypeDef structure that will
* contains the output alarm configuration values.
* @retval None
*/
void RTC_GetAlarm(uint32_t RTC_Format, uint32_t RTC_Alarm, RTC_AlarmTypeDef* RTC_AlarmStruct)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
assert_param(IS_RTC_ALARM(RTC_Alarm));
/* Get the RTC_ALRMAR register */
tmpreg = (uint32_t)(RTC->ALRMAR);
/* Fill the structure with the read parameters */
RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours = (uint32_t)((tmpreg & (RTC_ALRMAR_HT | \
RTC_ALRMAR_HU)) >> 16);
RTC_AlarmStruct->RTC_AlarmTime.RTC_Minutes = (uint32_t)((tmpreg & (RTC_ALRMAR_MNT | \
RTC_ALRMAR_MNU)) >> 8);
RTC_AlarmStruct->RTC_AlarmTime.RTC_Seconds = (uint32_t)(tmpreg & (RTC_ALRMAR_ST | \
RTC_ALRMAR_SU));
RTC_AlarmStruct->RTC_AlarmTime.RTC_H12 = (uint32_t)((tmpreg & RTC_ALRMAR_PM) >> 16);
RTC_AlarmStruct->RTC_AlarmDateWeekDay = (uint32_t)((tmpreg & (RTC_ALRMAR_DT | RTC_ALRMAR_DU)) >> 24);
RTC_AlarmStruct->RTC_AlarmDateWeekDaySel = (uint32_t)(tmpreg & RTC_ALRMAR_WDSEL);
RTC_AlarmStruct->RTC_AlarmMask = (uint32_t)(tmpreg & RTC_AlarmMask_All);
if (RTC_Format == RTC_Format_BIN)
{
RTC_AlarmStruct->RTC_AlarmTime.RTC_Hours = RTC_Bcd2ToByte(RTC_AlarmStruct-> \
RTC_AlarmTime.RTC_Hours);
RTC_AlarmStruct->RTC_AlarmTime.RTC_Minutes = RTC_Bcd2ToByte(RTC_AlarmStruct-> \
RTC_AlarmTime.RTC_Minutes);
RTC_AlarmStruct->RTC_AlarmTime.RTC_Seconds = RTC_Bcd2ToByte(RTC_AlarmStruct-> \
RTC_AlarmTime.RTC_Seconds);
RTC_AlarmStruct->RTC_AlarmDateWeekDay = RTC_Bcd2ToByte(RTC_AlarmStruct->RTC_AlarmDateWeekDay);
}
}
/**
* @brief Enables or disables the specified RTC Alarm.
* @param RTC_Alarm: specifies the alarm to be configured.
* This parameter can be any combination of the following values:
* @arg RTC_Alarm_A: to select Alarm A
* @param NewState: new state of the specified alarm.
* This parameter can be: ENABLE or DISABLE.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC Alarm is enabled/disabled
* - ERROR: RTC Alarm is not enabled/disabled
*/
ErrorStatus RTC_AlarmCmd(uint32_t RTC_Alarm, FunctionalState NewState)
{
__IO uint32_t alarmcounter = 0x00;
uint32_t alarmstatus = 0x00;
ErrorStatus status = ERROR;
/* Check the parameters */
assert_param(IS_RTC_CMD_ALARM(RTC_Alarm));
assert_param(IS_FUNCTIONAL_STATE(NewState));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Configure the Alarm state */
if (NewState != DISABLE)
{
RTC->CR |= (uint32_t)RTC_Alarm;
status = SUCCESS;
}
else
{
/* Disable the Alarm in RTC_CR register */
RTC->CR &= (uint32_t)~RTC_Alarm;
/* Wait till RTC ALRxWF flag is set and if Time out is reached exit */
do
{
alarmstatus = RTC->ISR & (RTC_Alarm >> 8);
alarmcounter++;
} while((alarmcounter != INITMODE_TIMEOUT) && (alarmstatus == 0x00));
if ((RTC->ISR & (RTC_Alarm >> 8)) == RESET)
{
status = ERROR;
}
else
{
status = SUCCESS;
}
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return status;
}
/**
* @brief Configure the RTC AlarmA/B Subseconds value and mask.
* @note This function is performed only when the Alarm is disabled.
* @param RTC_Alarm: specifies the alarm to be configured.
* This parameter can be one of the following values:
* @arg RTC_Alarm_A: to select Alarm A
* @param RTC_AlarmSubSecondValue: specifies the Subseconds value.
* This parameter can be a value from 0 to 0x00007FFF.
* @param RTC_AlarmSubSecondMask: specifies the Subseconds Mask.
* This parameter can be any combination of the following values:
* @arg RTC_AlarmSubSecondMask_All: All Alarm SS fields are masked.
* There is no comparison on sub seconds for Alarm.
* @arg RTC_AlarmSubSecondMask_SS14_1: SS[14:1] are don't care in Alarm comparison.
* Only SS[0] is compared
* @arg RTC_AlarmSubSecondMask_SS14_2: SS[14:2] are don't care in Alarm comparison.
* Only SS[1:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_3: SS[14:3] are don't care in Alarm comparison.
* Only SS[2:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_4: SS[14:4] are don't care in Alarm comparison.
* Only SS[3:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_5: SS[14:5] are don't care in Alarm comparison.
* Only SS[4:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_6: SS[14:6] are don't care in Alarm comparison.
* Only SS[5:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_7: SS[14:7] are don't care in Alarm comparison.
* Only SS[6:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_8: SS[14:8] are don't care in Alarm comparison.
* Only SS[7:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_9: SS[14:9] are don't care in Alarm comparison.
* Only SS[8:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_10: SS[14:10] are don't care in Alarm comparison.
* Only SS[9:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_11: SS[14:11] are don't care in Alarm comparison.
* Only SS[10:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_12: SS[14:12] are don't care in Alarm comparison.
* Only SS[11:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14_13: SS[14:13] are don't care in Alarm comparison.
* Only SS[12:0] are compared
* @arg RTC_AlarmSubSecondMask_SS14: SS[14] is don't care in Alarm comparison.
* Only SS[13:0] are compared
* @arg RTC_AlarmSubSecondMask_None: SS[14:0] are compared and must match to activate alarm
* @retval None
*/
void RTC_AlarmSubSecondConfig(uint32_t RTC_Alarm, uint32_t RTC_AlarmSubSecondValue, uint8_t RTC_AlarmSubSecondMask)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_ALARM(RTC_Alarm));
assert_param(IS_RTC_ALARM_SUB_SECOND_VALUE(RTC_AlarmSubSecondValue));
assert_param(IS_RTC_ALARM_SUB_SECOND_MASK(RTC_AlarmSubSecondMask));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Configure the Alarm A or Alarm B SubSecond registers */
tmpreg = (uint32_t) (((uint32_t)(RTC_AlarmSubSecondValue)) | ((uint32_t)(RTC_AlarmSubSecondMask) << 24));
/* Configure the AlarmA SubSecond register */
RTC->ALRMASSR = tmpreg;
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @brief Gets the RTC Alarm Subseconds value.
* @param RTC_Alarm: specifies the alarm to be read.
* This parameter can be one of the following values:
* @arg RTC_Alarm_A: to select Alarm A
* @param None
* @retval RTC Alarm Subseconds value.
*/
uint32_t RTC_GetAlarmSubSecond(uint32_t RTC_Alarm)
{
uint32_t tmpreg = 0;
/* Get the RTC_ALRMAR register */
tmpreg = (uint32_t)((RTC->ALRMASSR) & RTC_ALRMASSR_SS);
return (tmpreg);
}
/**
* @}
*/
/**
* @brief Adds or substract one hour from the current time.
* @param RTC_DayLightSaveOperation: the value of hour adjustment.
* This parameter can be one of the following values:
* @arg RTC_DayLightSaving_SUB1H: Substract one hour (winter time)
* @arg RTC_DayLightSaving_ADD1H: Add one hour (summer time)
* @param RTC_StoreOperation: Specifies the value to be written in the BCK bit
* in CR register to store the operation.
* This parameter can be one of the following values:
* @arg RTC_StoreOperation_Reset: BCK Bit Reset
* @arg RTC_StoreOperation_Set: BCK Bit Set
* @retval None
*/
void RTC_DayLightSavingConfig(uint32_t RTC_DayLightSaving, uint32_t RTC_StoreOperation)
{
/* Check the parameters */
assert_param(IS_RTC_DAYLIGHT_SAVING(RTC_DayLightSaving));
assert_param(IS_RTC_STORE_OPERATION(RTC_StoreOperation));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Clear the bits to be configured */
RTC->CR &= (uint32_t)~(RTC_CR_BCK);
/* Configure the RTC_CR register */
RTC->CR |= (uint32_t)(RTC_DayLightSaving | RTC_StoreOperation);
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @brief Returns the RTC Day Light Saving stored operation.
* @param None
* @retval RTC Day Light Saving stored operation.
* - RTC_StoreOperation_Reset
* - RTC_StoreOperation_Set
*/
uint32_t RTC_GetStoreOperation(void)
{
return (RTC->CR & RTC_CR_BCK);
}
/**
* @}
*/
/**
* @brief Configures the RTC output source (AFO_ALARM).
* @param RTC_Output: Specifies which signal will be routed to the RTC output.
* This parameter can be one of the following values:
* @arg RTC_Output_Disable: No output selected
* @arg RTC_Output_AlarmA: signal of AlarmA mapped to output
* @arg RTC_Output_WakeUp: signal of WakeUp mapped to output
* @param RTC_OutputPolarity: Specifies the polarity of the output signal.
* This parameter can be one of the following:
* @arg RTC_OutputPolarity_High: The output pin is high when the
* ALRAF is high (depending on OSEL)
* @arg RTC_OutputPolarity_Low: The output pin is low when the
* ALRAF is high (depending on OSEL)
* @retval None
*/
void RTC_OutputConfig(uint32_t RTC_Output, uint32_t RTC_OutputPolarity)
{
/* Check the parameters */
assert_param(IS_RTC_OUTPUT(RTC_Output));
assert_param(IS_RTC_OUTPUT_POL(RTC_OutputPolarity));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Clear the bits to be configured */
RTC->CR &= (uint32_t)~(RTC_CR_OSEL | RTC_CR_POL);
/* Configure the output selection and polarity */
RTC->CR |= (uint32_t)(RTC_Output | RTC_OutputPolarity);
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @}
*/
/**
* @brief Enables or disables the RTC clock to be output through the relative pin.
* @param NewState: new state of the digital calibration Output.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_CalibOutputCmd(FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
if (NewState != DISABLE)
{
/* Enable the RTC clock output */
RTC->CR |= (uint32_t)RTC_CR_COE;
}
else
{
/* Disable the RTC clock output */
RTC->CR &= (uint32_t)~RTC_CR_COE;
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @brief Configure the Calibration Pinout (RTC_CALIB) Selection (1Hz or 512Hz).
* @param RTC_CalibOutput: Select the Calibration output Selection .
* This parameter can be one of the following values:
* @arg RTC_CalibOutput_512Hz: A signal has a regular waveform at 512Hz.
* @arg RTC_CalibOutput_1Hz: A signal has a regular waveform at 1Hz.
* @retval None
*/
void RTC_CalibOutputConfig(uint32_t RTC_CalibOutput)
{
/* Check the parameters */
assert_param(IS_RTC_CALIB_OUTPUT(RTC_CalibOutput));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/*clear flags before config*/
RTC->CR &= (uint32_t)~(RTC_CR_CALSEL);
/* Configure the RTC_CR register */
RTC->CR |= (uint32_t)RTC_CalibOutput;
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @brief Configures the Smooth Calibration Settings.
* @param RTC_SmoothCalibPeriod: Select the Smooth Calibration Period.
* This parameter can be can be one of the following values:
* @arg RTC_SmoothCalibPeriod_32sec: The smooth calibration periode is 32s.
* @arg RTC_SmoothCalibPeriod_16sec: The smooth calibration periode is 16s.
* @arg RTC_SmoothCalibPeriod_8sec: The smooth calibartion periode is 8s.
* @param RTC_SmoothCalibPlusPulses: Select to Set or reset the CALP bit.
* This parameter can be one of the following values:
* @arg RTC_SmoothCalibPlusPulses_Set: Add one RTCCLK puls every 2**11 pulses.
* @arg RTC_SmoothCalibPlusPulses_Reset: No RTCCLK pulses are added.
* @param RTC_SmouthCalibMinusPulsesValue: Select the value of CALM[8:0] bits.
* This parameter can be one any value from 0 to 0x000001FF.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC Calib registers are configured
* - ERROR: RTC Calib registers are not configured
*/
ErrorStatus RTC_SmoothCalibConfig(uint32_t RTC_SmoothCalibPeriod,
uint32_t RTC_SmoothCalibPlusPulses,
uint32_t RTC_SmouthCalibMinusPulsesValue)
{
ErrorStatus status = ERROR;
uint32_t recalpfcount = 0;
/* Check the parameters */
assert_param(IS_RTC_SMOOTH_CALIB_PERIOD(RTC_SmoothCalibPeriod));
assert_param(IS_RTC_SMOOTH_CALIB_PLUS(RTC_SmoothCalibPlusPulses));
assert_param(IS_RTC_SMOOTH_CALIB_MINUS(RTC_SmouthCalibMinusPulsesValue));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* check if a calibration is pending*/
if ((RTC->ISR & RTC_ISR_RECALPF) != RESET)
{
/* wait until the Calibration is completed*/
while (((RTC->ISR & RTC_ISR_RECALPF) != RESET) && (recalpfcount != RECALPF_TIMEOUT))
{
recalpfcount++;
}
}
/* check if the calibration pending is completed or if there is no calibration operation at all*/
if ((RTC->ISR & RTC_ISR_RECALPF) == RESET)
{
/* Configure the Smooth calibration settings */
RTC->CALR = (uint32_t)((uint32_t)RTC_SmoothCalibPeriod | (uint32_t)RTC_SmoothCalibPlusPulses | (uint32_t)RTC_SmouthCalibMinusPulsesValue);
status = SUCCESS;
}
else
{
status = ERROR;
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return (ErrorStatus)(status);
}
/**
* @}
*/
/**
* @brief Enables or Disables the RTC TimeStamp functionality with the
* specified time stamp pin stimulating edge.
* @param RTC_TimeStampEdge: Specifies the pin edge on which the TimeStamp is
* activated.
* This parameter can be one of the following:
* @arg RTC_TimeStampEdge_Rising: the Time stamp event occurs on the rising
* edge of the related pin.
* @arg RTC_TimeStampEdge_Falling: the Time stamp event occurs on the
* falling edge of the related pin.
* @param NewState: new state of the TimeStamp.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_TimeStampCmd(uint32_t RTC_TimeStampEdge, FunctionalState NewState)
{
uint32_t tmpreg = 0;
/* 设置Edge的边缘触发，没有特定位的情况 */
/* Check the parameters */
assert_param(IS_RTC_TIMESTAMP_EDGE(RTC_TimeStampEdge));
assert_param(IS_FUNCTIONAL_STATE(NewState));
/* Get the RTC_CR register and clear the bits to be configured */
tmpreg = (uint32_t)(RTC->CR & (uint32_t)~(RTC_CR_TSEDGE | RTC_CR_TSE));
/* Get the new configuration */
if (NewState != DISABLE)
{
tmpreg |= (uint32_t)(RTC_TimeStampEdge | RTC_CR_TSE);
}
else
{
tmpreg |= (uint32_t)(RTC_TimeStampEdge);
}
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Configure the Time Stamp TSEDGE and Enable bits */
RTC->CR = (uint32_t)tmpreg;
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @brief Get the RTC TimeStamp value and masks.
* @param RTC_Format: specifies the format of the output parameters.
* This parameter can be one of the following values:
* @arg RTC_Format_BIN: Binary data format
* @arg RTC_Format_BCD: BCD data format
* @param RTC_StampTimeStruct: pointer to a RTC_TimeTypeDef structure that will
* contains the TimeStamp time values.
* @param RTC_StampDateStruct: pointer to a RTC_DateTypeDef structure that will
* contains the TimeStamp date values.
* @retval None
*/
void RTC_GetTimeStamp(uint32_t RTC_Format, RTC_TimeTypeDef* RTC_StampTimeStruct,
RTC_DateTypeDef* RTC_StampDateStruct)
{
uint32_t tmptime = 0, tmpdate = 0;
/* Check the parameters */
assert_param(IS_RTC_FORMAT(RTC_Format));
/* Get the TimeStamp time and date registers values */
tmptime = (uint32_t)(RTC->TSTR & RTC_TR_RESERVED_MASK);
tmpdate = (uint32_t)(RTC->TSDR & RTC_DR_RESERVED_MASK);
/* Fill the Time structure fields with the read parameters */
RTC_StampTimeStruct->RTC_Hours = (uint8_t)((tmptime & (RTC_TR_HT | RTC_TR_HU)) >> 16);
RTC_StampTimeStruct->RTC_Minutes = (uint8_t)((tmptime & (RTC_TR_MNT | RTC_TR_MNU)) >> 8);
RTC_StampTimeStruct->RTC_Seconds = (uint8_t)(tmptime & (RTC_TR_ST | RTC_TR_SU));
RTC_StampTimeStruct->RTC_H12 = (uint8_t)((tmptime & (RTC_TR_PM)) >> 16);
/* Fill the Date structure fields with the read parameters */
RTC_StampDateStruct->RTC_Year = 0;
RTC_StampDateStruct->RTC_Month = (uint8_t)((tmpdate & (RTC_DR_MT | RTC_DR_MU)) >> 8);
RTC_StampDateStruct->RTC_Date = (uint8_t)(tmpdate & (RTC_DR_DT | RTC_DR_DU));
RTC_StampDateStruct->RTC_WeekDay = (uint8_t)((tmpdate & (RTC_DR_WDU)) >> 13);
/* Check the input parameters format */
if (RTC_Format == RTC_Format_BIN)
{
/* Convert the Time structure parameters to Binary format */
RTC_StampTimeStruct->RTC_Hours = (uint8_t)RTC_Bcd2ToByte(RTC_StampTimeStruct->RTC_Hours);
RTC_StampTimeStruct->RTC_Minutes = (uint8_t)RTC_Bcd2ToByte(RTC_StampTimeStruct->RTC_Minutes);
RTC_StampTimeStruct->RTC_Seconds = (uint8_t)RTC_Bcd2ToByte(RTC_StampTimeStruct->RTC_Seconds);
/* Convert the Date structure parameters to Binary format */
RTC_StampDateStruct->RTC_Month = (uint8_t)RTC_Bcd2ToByte(RTC_StampDateStruct->RTC_Month);
RTC_StampDateStruct->RTC_Date = (uint8_t)RTC_Bcd2ToByte(RTC_StampDateStruct->RTC_Date);
RTC_StampDateStruct->RTC_WeekDay = (uint8_t)RTC_Bcd2ToByte(RTC_StampDateStruct->RTC_WeekDay);
}
}
/**
* @brief Get the RTC timestamp Subseconds value.
* @param None
* @retval RTC current timestamp Subseconds value.
*/
uint32_t RTC_GetTimeStampSubSecond(void)
{
/* Get timestamp subseconds values from the correspondent registers */
return (uint32_t)(RTC->TSSSR);
}
/**
* @}
*/
/**
* @brief Configures the select Tamper pin edge.
* @param RTC_Tamper: Selected tamper pin.
* This parameter can be any combination of the following values:
* @arg RTC_Tamper_1: Select Tamper 1.
* @arg RTC_Tamper_2: Select Tamper 2.
* @param RTC_TamperTrigger: Specifies the trigger on the tamper pin that
* stimulates tamper event.
* This parameter can be one of the following values:
* @arg RTC_TamperTrigger_RisingEdge: Rising Edge of the tamper pin causes tamper event.
* @arg RTC_TamperTrigger_FallingEdge: Falling Edge of the tamper pin causes tamper event.
* @arg RTC_TamperTrigger_LowLevel: Low Level of the tamper pin causes tamper event.
* @arg RTC_TamperTrigger_HighLevel: High Level of the tamper pin causes tamper event.
* @retval None
*/
void RTC_TamperTriggerConfig(uint32_t RTC_Tamper, uint32_t RTC_TamperTrigger)
{
/* Check the parameters */
assert_param(IS_RTC_TAMPER(RTC_Tamper));
assert_param(IS_RTC_TAMPER_TRIGGER(RTC_TamperTrigger));
if (RTC_TamperTrigger == RTC_TamperTrigger_RisingEdge)
{
/* Configure the RTC_TAFCR register */
RTC->TAFCR &= (uint32_t)((uint32_t)~(RTC_Tamper << 1));
}
else
{
/* Configure the RTC_TAFCR register */
RTC->TAFCR |= (uint32_t)(RTC_Tamper << 1);
}
}
/**
* @brief Enables or Disables the Tamper detection.
* @param RTC_Tamper: Selected tamper pin.
* This parameter can be any combination of the following values:
* @arg RTC_Tamper_1: Select Tamper 1.
* @arg RTC_Tamper_2: Select Tamper 2.
* @param NewState: new state of the tamper pin.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_TamperCmd(uint32_t RTC_Tamper, FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_RTC_TAMPER(RTC_Tamper));
assert_param(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
/* Enable the selected Tamper pin */
RTC->TAFCR |= (uint32_t)RTC_Tamper;
}
else
{
/* Disable the selected Tamper pin */
RTC->TAFCR &= (uint32_t)~RTC_Tamper;
}
}
/**
* @brief Configures the Tampers Filter.
* @param RTC_TamperFilter: Specifies the tampers filter.
* This parameter can be one of the following values:
* @arg RTC_TamperFilter_Disable: Tamper filter is disabled.
* @arg RTC_TamperFilter_2Sample: Tamper is activated after 2 consecutive
* samples at the active level
* @arg RTC_TamperFilter_4Sample: Tamper is activated after 4 consecutive
* samples at the active level
* @arg RTC_TamperFilter_8Sample: Tamper is activated after 8 consecutive
* samples at the active level
* @retval None
*/
void RTC_TamperFilterConfig(uint32_t RTC_TamperFilter)
{
/* Check the parameters */
assert_param(IS_RTC_TAMPER_FILTER(RTC_TamperFilter));
/* Clear TAMPFLT[1:0] bits in the RTC_TAFCR register */
RTC->TAFCR &= (uint32_t)~(RTC_TAFCR_TAMPFLT);
/* Configure the RTC_TAFCR register */
RTC->TAFCR |= (uint32_t)RTC_TamperFilter;
}
/**
* @brief Configures the Tampers Sampling Frequency.
* @param RTC_TamperSamplingFreq: Specifies the tampers Sampling Frequency.
* This parameter can be one of the following values:
* @arg RTC_TamperSamplingFreq_RTCCLK_Div32768: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 32768
* @arg RTC_TamperSamplingFreq_RTCCLK_Div16384: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 16384
* @arg RTC_TamperSamplingFreq_RTCCLK_Div8192: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 8192
* @arg RTC_TamperSamplingFreq_RTCCLK_Div4096: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 4096
* @arg RTC_TamperSamplingFreq_RTCCLK_Div2048: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 2048
* @arg RTC_TamperSamplingFreq_RTCCLK_Div1024: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 1024
* @arg RTC_TamperSamplingFreq_RTCCLK_Div512: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 512
* @arg RTC_TamperSamplingFreq_RTCCLK_Div256: Each of the tamper inputs are sampled
* with a frequency = RTCCLK / 256
* @retval None
*/
void RTC_TamperSamplingFreqConfig(uint32_t RTC_TamperSamplingFreq)
{
/* Check the parameters */
assert_param(IS_RTC_TAMPER_SAMPLING_FREQ(RTC_TamperSamplingFreq));
/* Clear TAMPFREQ[2:0] bits in the RTC_TAFCR register */
RTC->TAFCR &= (uint32_t)~(RTC_TAFCR_TAMPFREQ);
/* Configure the RTC_TAFCR register */
RTC->TAFCR |= (uint32_t)RTC_TamperSamplingFreq;
}
/**
* @brief Configures the Tampers Pins input Precharge Duration.
* @param RTC_TamperPrechargeDuration: Specifies the Tampers Pins input
* Precharge Duration.
* This parameter can be one of the following values:
* @arg RTC_TamperPrechargeDuration_1RTCCLK: Tamper pins are pre-charged before sampling during 1 RTCCLK cycle
* @arg RTC_TamperPrechargeDuration_2RTCCLK: Tamper pins are pre-charged before sampling during 2 RTCCLK cycle
* @arg RTC_TamperPrechargeDuration_4RTCCLK: Tamper pins are pre-charged before sampling during 4 RTCCLK cycle
* @arg RTC_TamperPrechargeDuration_8RTCCLK: Tamper pins are pre-charged before sampling during 8 RTCCLK cycle
* @retval None
*/
void RTC_TamperPinsPrechargeDuration(uint32_t RTC_TamperPrechargeDuration)
{
/* Check the parameters */
assert_param(IS_RTC_TAMPER_PRECHARGE_DURATION(RTC_TamperPrechargeDuration));
/* Clear TAMPPRCH[1:0] bits in the RTC_TAFCR register */
RTC->TAFCR &= (uint32_t)~(RTC_TAFCR_TAMPPRCH);
/* Configure the RTC_TAFCR register */
RTC->TAFCR |= (uint32_t)RTC_TamperPrechargeDuration;
}
/**
* @brief Enables or Disables the TimeStamp on Tamper Detection Event.
* @note The timestamp is valid even the TSE bit in tamper control register
* is reset.
* @param NewState: new state of the timestamp on tamper event.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_TimeStampOnTamperDetectionCmd(FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
/* Save timestamp on tamper detection event */
RTC->TAFCR |= (uint32_t)RTC_TAFCR_TAMPTS;
}
else
{
/* Tamper detection does not cause a timestamp to be saved */
RTC->TAFCR &= (uint32_t)~RTC_TAFCR_TAMPTS;
}
}
/**
* @brief Enables or Disables the Precharge of Tamper pin.
* @param NewState: new state of tamper pull up.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_TamperPullUpCmd(FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_FUNCTIONAL_STATE(NewState));
if (NewState != DISABLE)
{
/* Enable precharge of the selected Tamper pin */
RTC->TAFCR &= (uint32_t)~RTC_TAFCR_TAMPPUDIS;
}
else
{
/* Disable precharge of the selected Tamper pin */
RTC->TAFCR |= (uint32_t)RTC_TAFCR_TAMPPUDIS;
}
}
/**
* @}
*/
/**
* @brief Configures the RTC Output Pin mode.
* @param RTC_OutputType: specifies the RTC Output (PC13) pin mode.
* This parameter can be one of the following values:
* @arg RTC_OutputType_OpenDrain: RTC Output (PC13) is configured in
* Open Drain mode.
* @arg RTC_OutputType_PushPull: RTC Output (PC13) is configured in
* Push Pull mode.
* @retval None
*/
void RTC_OutputTypeConfig(uint32_t RTC_OutputType)
{
/* Check the parameters */
assert_param(IS_RTC_OUTPUT_TYPE(RTC_OutputType));
RTC->TAFCR &= (uint32_t)~(RTC_TAFCR_ALARMOUTTYPE);
RTC->TAFCR |= (uint32_t)(RTC_OutputType);
}
/**
* @}
*/
/**
* @brief Configures the Synchronization Shift Control Settings.
* @note When REFCKON is set, firmware must not write to Shift control register
* @param RTC_ShiftAdd1S: Select to add or not 1 second to the time Calendar.
* This parameter can be one of the following values :
* @arg RTC_ShiftAdd1S_Set: Add one second to the clock calendar.
* @arg RTC_ShiftAdd1S_Reset: No effect.
* @param RTC_ShiftSubFS: Select the number of Second Fractions to Substitute.
* This parameter can be one any value from 0 to 0x7FFF.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RTC Shift registers are configured
* - ERROR: RTC Shift registers are not configured
*/
ErrorStatus RTC_SynchroShiftConfig(uint32_t RTC_ShiftAdd1S, uint32_t RTC_ShiftSubFS)
{
ErrorStatus status = ERROR;
uint32_t shpfcount = 0;
/* Check the parameters */
assert_param(IS_RTC_SHIFT_ADD1S(RTC_ShiftAdd1S));
assert_param(IS_RTC_SHIFT_SUBFS(RTC_ShiftSubFS));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
/* Check if a Shift is pending*/
if ((RTC->ISR & RTC_ISR_SHPF) != RESET)
{
/* Wait until the shift is completed*/
while (((RTC->ISR & RTC_ISR_SHPF) != RESET) && (shpfcount != SHPF_TIMEOUT))
{
shpfcount++;
}
}
/* Check if the Shift pending is completed or if there is no Shift operation at all*/
if ((RTC->ISR & RTC_ISR_SHPF) == RESET)
{
/* check if the reference clock detection is disabled */
if((RTC->CR & RTC_CR_REFCKON) == RESET)
{
/* Configure the Shift settings */
RTC->SHIFTR = (uint32_t)(uint32_t)(RTC_ShiftSubFS) | (uint32_t)(RTC_ShiftAdd1S);
if(RTC_WaitForSynchro() == ERROR)
{
status = ERROR;
}
else
{
status = SUCCESS;
}
}
else
{
status = ERROR;
}
}
else
{
status = ERROR;
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
return (ErrorStatus)(status);
}
/**
* @}
*/
/**
* @brief Enables or disables the specified RTC interrupts.
* @param RTC_IT: specifies the RTC interrupt sources to be enabled or disabled.
* This parameter can be any combination of the following values:
* @arg RTC_IT_TS: Time Stamp interrupt mask
* @arg RTC_IT_WUT: WakeUp Timer interrupt mask
* @arg RTC_IT_ALRA: Alarm A interrupt mask
* @arg RTC_IT_TAMP: Tamper event interrupt mask
* @param NewState: new state of the specified RTC interrupts.
* This parameter can be: ENABLE or DISABLE.
* @retval None
*/
void RTC_ITConfig(uint32_t RTC_IT, FunctionalState NewState)
{
/* Check the parameters */
assert_param(IS_RTC_CONFIG_IT(RTC_IT));
assert_param(IS_FUNCTIONAL_STATE(NewState));
/* Disable the write protection for RTC registers */
RTC->WPR = 0xCA;
RTC->WPR = 0x53;
if (NewState != DISABLE)
{
/* Configure the Interrupts in the RTC_CR register */
RTC->CR |= (uint32_t)(RTC_IT & ~RTC_TAFCR_TAMPIE);
/* Configure the Tamper Interrupt in the RTC_TAFCR */
RTC->TAFCR |= (uint32_t)(RTC_IT & RTC_TAFCR_TAMPIE);
}
else
{
/* Configure the Interrupts in the RTC_CR register */
RTC->CR &= (uint32_t)~(RTC_IT & (uint32_t)~RTC_TAFCR_TAMPIE);
/* Configure the Tamper Interrupt in the RTC_TAFCR */
RTC->TAFCR &= (uint32_t)~(RTC_IT & RTC_TAFCR_TAMPIE);
}
/* Enable the write protection for RTC registers */
RTC->WPR = 0xFF;
}
/**
* @brief Checks whether the specified RTC flag is set or not.
* @param RTC_FLAG: specifies the flag to check.
* This parameter can be one of the following values:
* @arg RTC_FLAG_RECALPF: RECALPF event flag
* @arg RTC_FLAG_TAMP2F: Tamper 2 event flag
* @arg RTC_FLAG_TAMP1F: Tamper 1 event flag
* @arg RTC_FLAG_TSOVF: Time Stamp OverFlow flag
* @arg RTC_FLAG_TSF: Time Stamp event flag
* @arg RTC_FLAG_WUTF: WakeUp Timer flag
* @arg RTC_FLAG_ALRAF: Alarm A flag
* @arg RTC_FLAG_INITF: Initialization mode flag
* @arg RTC_FLAG_RSF: Registers Synchronized flag
* @arg RTC_FLAG_INITS: Registers Configured flag
* @retval The new state of RTC_FLAG (SET or RESET).
*/
FlagStatus RTC_GetFlagStatus(uint32_t RTC_FLAG)
{
FlagStatus bitstatus = RESET;
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_GET_FLAG(RTC_FLAG));
/* Get all the flags */
tmpreg = (uint32_t)(RTC->ISR & RTC_FLAGS_MASK);
/* Return the status of the flag */
if ((tmpreg & RTC_FLAG) != (uint32_t)RESET)
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
return bitstatus;
}
/**
* @brief Clears the RTC's pending flags.
* @param RTC_FLAG: specifies the RTC flag to clear.
* This parameter can be any combination of the following values:
* @arg RTC_FLAG_TAMP2F: Tamper 2 event flag
* @arg RTC_FLAG_TAMP1F: Tamper 1 event flag
* @arg RTC_FLAG_TSOVF: Time Stamp Overflow flag
* @arg RTC_FLAG_TSF: Time Stamp event flag
* @arg RTC_FLAG_WUTF: WakeUp Timer flag
* @arg RTC_FLAG_ALRAF: Alarm A flag
* @arg RTC_FLAG_RSF: Registers Synchronized flag
* @retval None
*/
void RTC_ClearFlag(uint32_t RTC_FLAG)
{
/* Check the parameters */
assert_param(IS_RTC_CLEAR_FLAG(RTC_FLAG));
/* Clear the Flags in the RTC_ISR register */
RTC->ISR = (uint32_t)((uint32_t)(~((RTC_FLAG | RTC_ISR_INIT)& 0x0001FFFF) | (uint32_t)(RTC->ISR & RTC_ISR_INIT)));
}
/**
* @brief Checks whether the specified RTC interrupt has occurred or not.
* @param RTC_IT: specifies the RTC interrupt source to check.
* This parameter can be one of the following values:
* @arg RTC_IT_TS: Time Stamp interrupt
* @arg RTC_IT_WUT: WakeUp Timer interrupt
* @arg RTC_IT_ALRA: Alarm A interrupt
* @arg RTC_IT_TAMP1: Tamper1 event interrupt
* @arg RTC_IT_TAMP2: Tamper2 event interrupt
* @retval The new state of RTC_IT (SET or RESET).
*/
ITStatus RTC_GetITStatus(uint32_t RTC_IT)
{
ITStatus bitstatus = RESET;
uint32_t tmpreg = 0, enablestatus = 0;
/* Check the parameters */
assert_param(IS_RTC_GET_IT(RTC_IT));
/* Get the TAMPER Interrupt enable bit and pending bit */
tmpreg = (uint32_t)(RTC->TAFCR & (RTC_TAFCR_TAMPIE));
/* Get the Interrupt enable Status */
enablestatus = (uint32_t)((RTC->CR & RTC_IT) | (tmpreg & ((RTC_IT >> (RTC_IT >> 18)) >> 15)));
/* Get the Interrupt pending bit */
tmpreg = (uint32_t)((RTC->ISR & (uint32_t)(RTC_IT >> 4)));
/* Get the status of the Interrupt */
if ((enablestatus != (uint32_t)RESET) && ((tmpreg & 0x0000FFFF) != (uint32_t)RESET))
{
bitstatus = SET;
}
else
{
bitstatus = RESET;
}
return bitstatus;
}
/**
* @brief Clears the RTC's interrupt pending bits.
* @param RTC_IT: specifies the RTC interrupt pending bit to clear.
* This parameter can be any combination of the following values:
* @arg RTC_IT_TS: Time Stamp interrupt
* @arg RTC_IT_WUT: WakeUp Timer interrupt
* @arg RTC_IT_ALRA: Alarm A interrupt
* @arg RTC_IT_TAMP1: Tamper1 event interrupt
* @arg RTC_IT_TAMP2: Tamper2 event interrupt
* @retval None
*/
void RTC_ClearITPendingBit(uint32_t RTC_IT)
{
uint32_t tmpreg = 0;
/* Check the parameters */
assert_param(IS_RTC_CLEAR_IT(RTC_IT));
/* Get the RTC_ISR Interrupt pending bits mask */
tmpreg = (uint32_t)(RTC_IT >> 4);
/* Clear the interrupt pending bits in the RTC_ISR register */
RTC->ISR = (uint32_t)((uint32_t)(~((tmpreg | RTC_ISR_INIT)& 0x0000FFFF) | (uint32_t)(RTC->ISR & RTC_ISR_INIT)));
}
/**
* @}
*/
/**
* @brief Converts a 2 digit decimal to BCD format.
* @param Value: Byte to be converted.
* @retval Converted byte
*/
static uint8_t RTC_ByteToBcd2(uint8_t Value)
{
uint8_t bcdhigh = 0;
while (Value >= 10)
{
bcdhigh++;
Value -= 10;
}
return ((uint8_t)(bcdhigh << 4) | Value);
}
/**
* @brief Convert from 2 digit BCD to Binary.
* @param Value: BCD value to be converted.
* @retval Converted word
*/
static uint8_t RTC_Bcd2ToByte(uint8_t Value)
{
uint8_t tmp = 0;
tmp = ((uint8_t)(Value & (uint8_t)0xF0) >> (uint8_t)0x4) * 10;
return (tmp + (Value & (uint8_t)0x0F));
}
/**
* @}
*/
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT FMD *****END OF FILE****/
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