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remostat/TinySPL_S103/stm8s_iwdg.h

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/**
******************************************************************************
* @file stm8s_iwdg.h
* @author MCD Application Team
* @version V2.2.0
* @date 30-September-2014
* @brief This file contains all functions prototypes and macros for the IWDG peripheral.
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT 2014 STMicroelectronics</center></h2>
*
* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.st.com/software_license_agreement_liberty_v2
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************
*/
/* Define to prevent recursive inclusion -------------------------------------*/
#ifndef __STM8S_IWDG_H
#define __STM8S_IWDG_H
/* Includes ------------------------------------------------------------------*/
#include "stm8s.h"
/** @addtogroup STM8S_StdPeriph_Driver
* @{
*/
/** @addtogroup IWDG_Private_Define
* @{
*/
/**
* @brief Define used to prevent watchdog reset
*/
#define IWDG_KEY_REFRESH ((uint8_t)0xAA) /*!< This value written in the Key register prevent the watchdog reset */
/**
* @brief Define used to start the watchdog counter down
*/
#define IWDG_KEY_ENABLE ((uint8_t)0xCC) /*!< This value written in the Key register start the watchdog counting down*/
/**
* @}
*/
/** @addtogroup IWDG_Private_Macros
* @{
*/
/**
* @brief Macro used by the assert function in order to check the different
* values of the prescaler.
*/
#define IS_IWDG_PRESCALER_OK(VALUE) (((VALUE) == IWDG_Prescaler_4 ) || \
((VALUE) == IWDG_Prescaler_8 ) || \
((VALUE) == IWDG_Prescaler_16 ) || \
((VALUE) == IWDG_Prescaler_32 ) || \
((VALUE) == IWDG_Prescaler_64 ) || \
((VALUE) == IWDG_Prescaler_128 ) || \
((VALUE) == IWDG_Prescaler_256))
/**
* @brief Macro used by the assert function in order to check the different
* values of the counter register.
*/
#define IS_IWDG_WRITEACCESS_MODE_OK(MODE) (((MODE) == IWDG_WriteAccess_Enable) || ((MODE) == IWDG_WriteAccess_Disable))
/**
* @}
*/
/** @addtogroup IWDG_Exported_Types
* @{
*/
/** IWDG write access enumeration */
typedef enum {
IWDG_WriteAccess_Enable = (uint8_t) 0x55, /*!< Code 0x55 in Key register, allow write access to Prescaler and Reload registers */
IWDG_WriteAccess_Disable = (uint8_t) 0x00 /*!< Code 0x00 in Key register, not allow write access to Prescaler and Reload registers */
} IWDG_WriteAccess_TypeDef;
/** IWDG prescaler enumaration */
typedef enum {
IWDG_Prescaler_4 = (uint8_t) 0x00, /*!< Used to set prescaler register to 4 */
IWDG_Prescaler_8 = (uint8_t) 0x01, /*!< Used to set prescaler register to 8 */
IWDG_Prescaler_16 = (uint8_t) 0x02, /*!< Used to set prescaler register to 16 */
IWDG_Prescaler_32 = (uint8_t) 0x03, /*!< Used to set prescaler register to 32 */
IWDG_Prescaler_64 = (uint8_t) 0x04, /*!< Used to set prescaler register to 64 */
IWDG_Prescaler_128 = (uint8_t) 0x05, /*!< Used to set prescaler register to 128 */
IWDG_Prescaler_256 = (uint8_t) 0x06 /*!< Used to set prescaler register to 256 */
} IWDG_Prescaler_TypeDef;
/**
* @}
*/
/** @addtogroup IWDG_Exported_Functions
* @{
*/
#if 0
void IWDG_WriteAccessCmd(IWDG_WriteAccess_TypeDef IWDG_WriteAccess);
void IWDG_SetPrescaler(IWDG_Prescaler_TypeDef IWDG_Prescaler);
void IWDG_SetReload(uint8_t IWDG_Reload);
void IWDG_ReloadCounter(void);
void IWDG_Enable(void);
#endif
/**
* @}
*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/
/* Public functions ----------------------------------------------------------*/
/** @addtogroup IWDG_Public_Functions
* @{
*/
/**
* @brief Enables or disables write access to Prescaler and Reload registers.
* @param IWDG_WriteAccess : New state of write access to Prescaler and Reload
* registers. This parameter can be a value of @ref IWDG_WriteAccess_TypeDef.
* @retval None
*/
inline void IWDG_WriteAccessCmd(IWDG_WriteAccess_TypeDef IWDG_WriteAccess)
{
/* Check the parameters */
assert_param(IS_IWDG_WRITEACCESS_MODE_OK(IWDG_WriteAccess));
IWDG->KR = (uint8_t) IWDG_WriteAccess; /* Write Access */
}
/**
* @brief Sets IWDG Prescaler value.
* @note Write access should be enabled
* @param IWDG_Prescaler : Specifies the IWDG Prescaler value.
* This parameter can be a value of @ref IWDG_Prescaler_TypeDef.
* @retval None
*/
inline void IWDG_SetPrescaler(IWDG_Prescaler_TypeDef IWDG_Prescaler)
{
/* Check the parameters */
assert_param(IS_IWDG_PRESCALER_OK(IWDG_Prescaler));
IWDG->PR = (uint8_t) IWDG_Prescaler;
}
/**
* @brief Sets IWDG Reload value.
* @note Write access should be enabled
* @param IWDG_Reload : Reload register value.
* This parameter must be a number between 0 and 0xFF.
* @retval None
*/
inline void IWDG_SetReload(uint8_t IWDG_Reload)
{
IWDG->RLR = IWDG_Reload;
}
/**
* @brief Reloads IWDG counter
* @note Write access should be enabled
* @param None
* @retval None
*/
inline void IWDG_ReloadCounter(void)
{
IWDG->KR = IWDG_KEY_REFRESH;
}
/**
* @brief Enables IWDG.
* @param None
* @retval None
*/
inline void IWDG_Enable(void)
{
IWDG->KR = IWDG_KEY_ENABLE;
}
/**
* @}
*/
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
#endif /* __STM8S_IWDG_H */
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/