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/*!
* @file apm32f4xx_iwdt.c
*
* @brief This file provides all the IWDT firmware functions
*
* @version V1.0.2
*
* @date 2022-06-23
*
* @attention
*
* Copyright (C) 2021-2022 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 usefull 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 "apm32f4xx_iwdt.h"
/** @addtogroup APM32F4xx_StdPeriphDriver
@{
*/
/** @defgroup IWDT_Driver
* @brief IWDT driver modules
@{
*/
/** @defgroup IWDT_Functions
@{
*/
/*!
* @brief Enable IWDT
*
* @param None
*
* @retval None
*/
void IWDT_Enable(void)
{
IWDT->KEY = IWDT_KEYWORD_ENABLE;
}
/*!
* @brief Reload the IWDT counter with value
*
* @param None
*
* @retval None
*/
void IWDT_Refresh(void)
{
IWDT->KEY = IWDT_KEYWORD_RELOAD;
}
/*!
* @brief Set IWDT count reload values
*
* @param reload: IWDT count reload values
*
* @retval None
*/
void IWDT_ConfigReload(uint16_t reload)
{
IWDT->CNTRLD = reload;
}
/*!
* @brief Enable the IWDT write access
*
* @param None
*
* @retval None
*/
void IWDT_EnableWriteAccess(void)
{
IWDT->KEY_B.KEY = IWDT_WRITEACCESS_ENABLE;
}
/*!
* @brief Disable the IWDT write access
*
* @param None
*
* @retval None
*/
void IWDT_DisableWriteAccess(void)
{
IWDT->KEY_B.KEY = IWDT_WRITEACCESS_DISABLE;
}
/*!
* @brief Set IWDT frequency divider values
*
* @param div: IWDT frequency divider values
* This parameter can be one of the following values:
* @arg IWDT_DIVIDER_4 : prescaler divider equal to 4
* @arg IWDT_DIVIDER_8 : prescaler divider equal to 8
* @arg IWDT_DIVIDER_16 : prescaler divider equal to 16
* @arg IWDT_DIVIDER_32 : prescaler divider equal to 32
* @arg IWDT_DIVIDER_64 : prescaler divider equal to 64
* @arg IWDT_DIVIDER_128: prescaler divider equal to 128
* @arg IWDT_DIVIDER_256: prescaler divider equal to 256
*
* @retval None
*/
void IWDT_ConfigDivider(uint8_t div)
{
IWDT->PSC = div;
}
/*!
* @brief Read the specified IWDT flag
*
* @param flag: specifies the flag to read
* This parameter can be one of the following values:
* @arg IWDT_FLAG_PSCU : Watchdog Prescaler Factor Update flag
* @arg IWDT_FLAG_CNTU : Watchdog Counter Reload Value Update flag
*
* @retval status of IWDT_FLAG (SET or RESET)
*
* @note
*/
uint8_t IWDT_ReadStatusFlag(uint16_t flag)
{
uint8_t bitStatus = RESET;
if ((IWDT->STS & flag) != (uint32_t)RESET)
{
bitStatus = SET;
}
else
{
bitStatus = RESET;
}
return bitStatus;
}
/**@} end of group IWDT_Functions */
/**@} end of group IWDT_Driver */
/**@} end of group APM32F4xx_StdPeriphDriver */
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