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/*!
* @file apm32e10x_rtc.c
*
* @brief This file provides all the RTC firmware functions
*
* @version V1.0.2
*
* @date 2022-12-31
*
* @attention
*
* Copyright (C) 2021-2023 Geehy Semiconductor
*
* You may not use this file except in compliance with the
* GEEHY COPYRIGHT NOTICE (GEEHY SOFTWARE PACKAGE LICENSE).
*
* The program is only for reference, which is distributed in the hope
* that it will be useful and instructional for customers to develop
* their software. Unless required by applicable law or agreed to in
* writing, the program is distributed on an "AS IS" BASIS, WITHOUT
* ANY WARRANTY OR CONDITIONS OF ANY KIND, either express or implied.
* See the GEEHY SOFTWARE PACKAGE LICENSE for the governing permissions
* and limitations under the License.
*/
#include "apm32e10x_rtc.h"
/** @addtogroup APM32E10x_StdPeriphDriver
@{
*/
/** @addtogroup RTC_Driver
* @brief RTC driver modules
@{
*/
/** @defgroup RTC_Functions Functions
@{
*/
/*!
* @brief Enter RTC configuration mode.
*
* @param None
*
* @retval None
*/
void RTC_EnableConfigMode(void)
{
RTC->CSTS_B.CFGMFLG = BIT_SET;
}
/*!
* @brief Exit RTC configuration mode.
*
* @param None
*
* @retval None
*/
void RTC_DisableConfigMode(void)
{
RTC->CSTS_B.CFGMFLG = BIT_RESET;
}
/*!
* @brief Read the RTC counter value.
*
* @param None
*
* @retval RTC counter value.
*/
uint32_t RTC_ReadCounter(void)
{
uint32_t reg = 0;
reg = (RTC->CNTH_B.CNTH) << 16;
reg |= (RTC->CNTL_B.CNTL);
return (reg);
}
/*!
* @brief Config the RTC counter value.
*
* @param value: RTC counter new value.
*
* @retval None
*/
void RTC_ConfigCounter(uint32_t value)
{
RTC_EnableConfigMode();
RTC->CNTH_B.CNTH = value >> 16;
RTC->CNTL_B.CNTL = value & 0x0000FFFF;
RTC_DisableConfigMode();
}
/*!
* @brief Config the RTC prescaler value.
*
* @param value: RTC prescaler new value.
*
* @retval None
*/
void RTC_ConfigPrescaler(uint32_t value)
{
RTC_EnableConfigMode();
RTC->PSCRLDH_B.PSCRLDH = value >> 16;
RTC->PSCRLDL_B.PSCRLDL = value & 0x0000FFFF;
RTC_DisableConfigMode();
}
/*!
* @brief Config the RTC alarm value.
*
* @param value: RTC alarm new value.
*
* @retval None
*/
void RTC_ConfigAlarm(uint32_t value)
{
RTC_EnableConfigMode();
RTC->ALRH_B.ALRH = value >> 16;
RTC->ALRL_B.ALRL = value & 0x0000FFFF;
RTC_DisableConfigMode();
}
/*!
* @brief Reads the RTC divider value.
*
* @param None
*
* @retval RTC Divider value.
*/
uint32_t RTC_ReadDivider(void)
{
uint32_t reg = 0;
reg = (RTC->PSCH_B.PSCH & 0x000F) << 16 ;
reg |= (RTC->PSCL_B.PSCL);
return (reg);
}
/*!
* @brief Waits until last write operation on RTC registers has finished.
*
* @param None
*
* @retval None
*/
void RTC_WaitForLastTask(void)
{
while(RTC->CSTS_B.OCFLG == BIT_RESET)
{
}
}
/*!
* @brief Waits until the RTC registers
*
* @param None
*
* @retval None
*/
void RTC_WaitForSynchro(void)
{
RTC->CSTS_B.RSYNCFLG = BIT_RESET;
while(RTC->CSTS_B.RSYNCFLG == BIT_RESET)
{
}
}
/*!
* @brief Enable RTC interrupts.
*
* @param interrupt: specifies the RTC interrupt sources to be enabled
* This parameter can be any combination of the following values:
* @arg RTC_INT_OVR : Overflow interrupt
* @arg RTC_INT_ALR : Alarm interrupt
* @arg RTC_INT_SEC : Second interrupt
*/
void RTC_EnableInterrupt(uint16_t interrupt)
{
RTC->CTRL |= interrupt;
}
/*!
* @brief Disable RTC interrupts.
*
* @param interrupt: specifies the RTC interrupt sources to be disabled
* This parameter can be any combination of the following values:
* @arg RTC_INT_OVR : Overflow interrupt
* @arg RTC_INT_ALR : Alarm interrupt
* @arg RTC_INT_SEC : Second interrupt
*
* @retval None
*/
void RTC_DisableInterrupt(uint16_t interrupt)
{
RTC->CTRL &= (uint32_t )~interrupt;
}
/*!
* @brief Read flag bit
*
* @param flag: specifies the flag to check.
* This parameter can be one of the following values:
* @arg RTC_FLAG_OC : RTC Operation Complete flag
* @arg RTC_FLAG_RSYNC: Registers Synchronized flag
* @arg RTC_FLAG_OVR : Overflow flag
* @arg RTC_FLAG_ALR : Alarm flag
* @arg RTC_FLAG_SEC : Second flag
*
* @retval flag bit
*/
uint8_t RTC_ReadStatusFlag(RTC_FLAG_T flag)
{
return (RTC->CSTS & flag) ? SET : RESET;
}
/*!
* @brief Clear flag bit
*
* @param flag: specifies the flag to clear.
* This parameter can be any combination of the following values:
* @arg RTC_FLAG_OVR : Overflow flag
* @arg RTC_FLAG_ALR : Alarm flag
* @arg RTC_FLAG_SEC : Second flag
*
* @retval None
*/
void RTC_ClearStatusFlag(uint16_t flag)
{
RTC->CSTS &= (uint32_t)~flag;
}
/*!
* @brief Read interrupt flag bit is set
*
* @param flag: specifies the flag to check.
* This parameter can be any combination of the following values:
* @arg RTC_INT_OVR : Overflow interrupt
* @arg RTC_INT_ALR : Alarm interrupt
* @arg RTC_INT_SEC : Second interrupt
*
* @retval None
*/
uint8_t RTC_ReadIntFlag(RTC_INT_T flag)
{
return (RTC->CSTS & flag) ? SET : RESET;
}
/*!
* @brief Clear RTC interrupt flag bit
*
* @param flag: specifies the flag to clear.
* This parameter can be one of the following values:
* @arg RTC_INT_OVR : Overflow interrupt
* @arg RTC_INT_ALR : Alarm interrupt
* @arg RTC_INT_SEC : Second interrupt
*
* @retval None
*/
void RTC_ClearIntFlag(uint16_t flag)
{
RTC->CSTS &= (uint32_t)~flag;
}
/**@} end of group RTC_Functions */
/**@} end of group RTC_Driver */
/**@} end of group APM32E10x_StdPeriphDriver */
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