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Rev	Author	Line No.	Line
2	mjames	1	/**
		2	******************************************************************************
		3	* @file stm32f0xx_hal_iwdg.h
		4	* @author MCD Application Team
		5	* @brief Header file of IWDG HAL module.
		6	******************************************************************************
		7	* @attention
		8	*
		9	* <h2><center>© Copyright (c) 2016 STMicroelectronics.
		10	* All rights reserved.</center></h2>
		11	*
		12	* This software component is licensed by ST under BSD 3-Clause license,
		13	* the "License"; You may not use this file except in compliance with the
		14	* License. You may obtain a copy of the License at:
		15	* opensource.org/licenses/BSD-3-Clause
		16	*
		17	******************************************************************************
		18	*/
		19
		20	/* Define to prevent recursive inclusion -------------------------------------*/
		21	#ifndef STM32F0xx_HAL_IWDG_H
		22	#define STM32F0xx_HAL_IWDG_H
		23
		24	#ifdef __cplusplus
		25	extern "C" {
		26	#endif
		27
		28	/* Includes ------------------------------------------------------------------*/
		29	#include "stm32f0xx_hal_def.h"
		30
		31	/** @addtogroup STM32F0xx_HAL_Driver
		32	* @{
		33	*/
		34
		35	/** @defgroup IWDG IWDG
		36	* @{
		37	*/
		38
		39	/* Exported types ------------------------------------------------------------*/
		40	/** @defgroup IWDG_Exported_Types IWDG Exported Types
		41	* @{
		42	*/
		43
		44	/**
		45	* @brief IWDG Init structure definition
		46	*/
		47	typedef struct
		48	{
		49	uint32_t Prescaler; /*!< Select the prescaler of the IWDG.
		50	This parameter can be a value of @ref IWDG_Prescaler */
		51
		52	uint32_t Reload; /*!< Specifies the IWDG down-counter reload value.
		53	This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */
		54
		55	uint32_t Window; /*!< Specifies the window value to be compared to the down-counter.
		56	This parameter must be a number between Min_Data = 0 and Max_Data = 0x0FFF */
		57
		58	} IWDG_InitTypeDef;
		59
		60	/**
		61	* @brief IWDG Handle Structure definition
		62	*/
		63	typedef struct
		64	{
		65	IWDG_TypeDef Instance; /!< Register base address */
		66
		67	IWDG_InitTypeDef Init; /!< IWDG required parameters /
		68	} IWDG_HandleTypeDef;
		69
		70
		71	/**
		72	* @}
		73	*/
		74
		75	/* Exported constants --------------------------------------------------------*/
		76	/** @defgroup IWDG_Exported_Constants IWDG Exported Constants
		77	* @{
		78	*/
		79
		80	/** @defgroup IWDG_Prescaler IWDG Prescaler
		81	* @{
		82	*/
		83	#define IWDG_PRESCALER_4 0x00000000u /!< IWDG prescaler set to 4 /
		84	#define IWDG_PRESCALER_8 IWDG_PR_PR_0 /!< IWDG prescaler set to 8 /
		85	#define IWDG_PRESCALER_16 IWDG_PR_PR_1 /!< IWDG prescaler set to 16 /
		86	#define IWDG_PRESCALER_32 (IWDG_PR_PR_1 \| IWDG_PR_PR_0) /!< IWDG prescaler set to 32 /
		87	#define IWDG_PRESCALER_64 IWDG_PR_PR_2 /!< IWDG prescaler set to 64 /
		88	#define IWDG_PRESCALER_128 (IWDG_PR_PR_2 \| IWDG_PR_PR_0) /!< IWDG prescaler set to 128 /
		89	#define IWDG_PRESCALER_256 (IWDG_PR_PR_2 \| IWDG_PR_PR_1) /!< IWDG prescaler set to 256 /
		90	/**
		91	* @}
		92	*/
		93
		94	/** @defgroup IWDG_Window_option IWDG Window option
		95	* @{
		96	*/
		97	#define IWDG_WINDOW_DISABLE IWDG_WINR_WIN
		98	/**
		99	* @}
		100	*/
		101
		102	/**
		103	* @}
		104	*/
		105
		106	/* Exported macros -----------------------------------------------------------*/
		107	/** @defgroup IWDG_Exported_Macros IWDG Exported Macros
		108	* @{
		109	*/
		110
		111	/**
		112	* @brief Enable the IWDG peripheral.
		113	* @param __HANDLE__ IWDG handle
		114	* @retval None
		115	*/
		116	#define __HAL_IWDG_START(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_ENABLE)
		117
		118	/**
		119	* @brief Reload IWDG counter with value defined in the reload register
		120	* (write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers disabled).
		121	* @param __HANDLE__ IWDG handle
		122	* @retval None
		123	*/
		124	#define __HAL_IWDG_RELOAD_COUNTER(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_RELOAD)
		125
		126	/**
		127	* @}
		128	*/
		129
		130	/* Exported functions --------------------------------------------------------*/
		131	/** @defgroup IWDG_Exported_Functions IWDG Exported Functions
		132	* @{
		133	*/
		134
		135	/** @defgroup IWDG_Exported_Functions_Group1 Initialization and Start functions
		136	* @{
		137	*/
		138	/* Initialization/Start functions ********************************************/
		139	HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg);
		140	/**
		141	* @}
		142	*/
		143
		144	/** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
		145	* @{
		146	*/
		147	/* I/O operation functions ****************************************************/
		148	HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg);
		149	/**
		150	* @}
		151	*/
		152
		153	/**
		154	* @}
		155	*/
		156
		157	/* Private constants ---------------------------------------------------------*/
		158	/** @defgroup IWDG_Private_Constants IWDG Private Constants
		159	* @{
		160	*/
		161
		162	/**
		163	* @brief IWDG Key Register BitMask
		164	*/
		165	#define IWDG_KEY_RELOAD 0x0000AAAAu /!< IWDG Reload Counter Enable /
		166	#define IWDG_KEY_ENABLE 0x0000CCCCu /!< IWDG Peripheral Enable /
		167	#define IWDG_KEY_WRITE_ACCESS_ENABLE 0x00005555u /!< IWDG KR Write Access Enable /
		168	#define IWDG_KEY_WRITE_ACCESS_DISABLE 0x00000000u /!< IWDG KR Write Access Disable /
		169
		170	/**
		171	* @}
		172	*/
		173
		174	/* Private macros ------------------------------------------------------------*/
		175	/** @defgroup IWDG_Private_Macros IWDG Private Macros
		176	* @{
		177	*/
		178
		179	/**
		180	* @brief Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
		181	* @param __HANDLE__ IWDG handle
		182	* @retval None
		183	*/
		184	#define IWDG_ENABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_ENABLE)
		185
		186	/**
		187	* @brief Disable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
		188	* @param __HANDLE__ IWDG handle
		189	* @retval None
		190	*/
		191	#define IWDG_DISABLE_WRITE_ACCESS(__HANDLE__) WRITE_REG((__HANDLE__)->Instance->KR, IWDG_KEY_WRITE_ACCESS_DISABLE)
		192
		193	/**
		194	* @brief Check IWDG prescaler value.
		195	* @param __PRESCALER__ IWDG prescaler value
		196	* @retval None
		197	*/
		198	#define IS_IWDG_PRESCALER(__PRESCALER__) (((__PRESCALER__) == IWDG_PRESCALER_4) \|\| \
		199	((__PRESCALER__) == IWDG_PRESCALER_8) \|\| \
		200	((__PRESCALER__) == IWDG_PRESCALER_16) \|\| \
		201	((__PRESCALER__) == IWDG_PRESCALER_32) \|\| \
		202	((__PRESCALER__) == IWDG_PRESCALER_64) \|\| \
		203	((__PRESCALER__) == IWDG_PRESCALER_128)\|\| \
		204	((__PRESCALER__) == IWDG_PRESCALER_256))
		205
		206	/**
		207	* @brief Check IWDG reload value.
		208	* @param __RELOAD__ IWDG reload value
		209	* @retval None
		210	*/
		211	#define IS_IWDG_RELOAD(__RELOAD__) ((__RELOAD__) <= IWDG_RLR_RL)
		212
		213	/**
		214	* @brief Check IWDG window value.
		215	* @param __WINDOW__ IWDG window value
		216	* @retval None
		217	*/
		218	#define IS_IWDG_WINDOW(__WINDOW__) ((__WINDOW__) <= IWDG_WINR_WIN)
		219
		220
		221	/**
		222	* @}
		223	*/
		224
		225	/**
		226	* @}
		227	*/
		228
		229	/**
		230	* @}
		231	*/
		232
		233
		234	#ifdef __cplusplus
		235	}
		236	#endif
		237
		238	#endif /* STM32F0xx_HAL_IWDG_H */
		239
		240	/********************** (C) COPYRIGHT STMicroelectronics *END OF FILE**/

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