00001 /*******************************************************************************
00002   * @file    stm8l15x_iwdg.h
00003   * @author  MCD Application Team
00004   * @version V1.5.0
00005   * @date    13-May-2011
00006   * @brief   This file contains all the functions prototypes for the IWDG 
00007   *          firmware library.
00008   ******************************************************************************
00009   * @attention
00010   *
00011   * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
00012   * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
00013   * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
00014   * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
00015   * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
00016   * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
00017   *
00018   * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
00019   ******************************************************************************  
00020   */
00021 
00022 /* Define to prevent recursive inclusion -------------------------------------*/
00023 #ifndef __STM8L15x_IWDG_H
00024 #define __STM8L15x_IWDG_H
00025 
00026 /* Includes ------------------------------------------------------------------*/
00027 #include "stm8l15x.h"
00028 
00029 /** @addtogroup STM8L15x_StdPeriph_Driver
00030   * @{
00031   */
00032 
00033 /** @addtogroup IWDG
00034   * @{
00035   */
00036   
00037 /* Exported variables ------------------------------------------------------- */
00038 /* Exported constants --------------------------------------------------------*/
00039 
00040 /** @defgroup IWDG_Exported_Constants
00041   * @{
00042   */
00043 
00044 /** @defgroup IWDG_KeyRefresh
00045   * @{
00046   */
00047 #define IWDG_KEY_REFRESH    ((uint8_t)0xAA)  /*!< This value written in the Key 
00048                                                   register prevent the watchdog reset */
00049 /**
00050  * @}
00051  */
00052  
00053 /** @defgroup IWDG_KeyEnable
00054   * @{
00055   */
00056 #define IWDG_KEY_ENABLE     ((uint8_t)0xCC)  /*!< This value written in the Key
00057                                                   register start the watchdog counting down*/
00058 /**
00059  * @}
00060  */
00061 /**
00062  * @}
00063  */
00064 
00065 /* Exported macros -----------------------------------------------------------*/
00066 /* Exported types ------------------------------------------------------------*/
00067 
00068 /** @defgroup IWDG_Exported_Types
00069   * @{
00070   */
00071 
00072 /** @defgroup IWDG_WriteAccess
00073   * @{
00074   */
00075 typedef enum
00076 {
00077   IWDG_WriteAccess_Enable  = (uint8_t)0x55, 
00078   IWDG_WriteAccess_Disable = (uint8_t)0x00
00079 } IWDG_WriteAccess_TypeDef;
00080 #define IS_IWDG_WRITE_ACCESS_MODE(MODE) (((MODE) == IWDG_WriteAccess_Enable) || \
00081                                          ((MODE) == IWDG_WriteAccess_Disable))
00082 /**
00083  * @}
00084  */
00085  
00086 /** @defgroup IWDG_prescaler 
00087   * @{
00088   */
00089 typedef enum
00090 {
00091   IWDG_Prescaler_4   = (uint8_t)0x00, /*!< Used to set prescaler register to 4 */
00092   IWDG_Prescaler_8   = (uint8_t)0x01, /*!< Used to set prescaler register to 8 */
00093   IWDG_Prescaler_16  = (uint8_t)0x02, /*!< Used to set prescaler register to 16 */
00094   IWDG_Prescaler_32  = (uint8_t)0x03, /*!< Used to set prescaler register to 32 */
00095   IWDG_Prescaler_64  = (uint8_t)0x04, /*!< Used to set prescaler register to 64 */
00096   IWDG_Prescaler_128 = (uint8_t)0x05, /*!< Used to set prescaler register to 128 */
00097   IWDG_Prescaler_256 = (uint8_t)0x06  /*!< Used to set prescaler register to 256 */
00098 } IWDG_Prescaler_TypeDef;
00099 #define IS_IWDG_PRESCALER_VALUE(VALUE) (((VALUE) == IWDG_Prescaler_4)   || \
00100                                         ((VALUE) == IWDG_Prescaler_8)   || \
00101                                         ((VALUE) == IWDG_Prescaler_16)  || \
00102                                         ((VALUE) == IWDG_Prescaler_32)  || \
00103                                         ((VALUE) == IWDG_Prescaler_64)  || \
00104                                         ((VALUE) == IWDG_Prescaler_128) || \
00105                                         ((VALUE) == IWDG_Prescaler_256))
00106 /**
00107  * @}
00108  */        
00109                                  
00110 /**
00111   * @}
00112   */
00113 
00114 /* Exported functions ------------------------------------------------------- */
00115 /* Prescaler and Counter configuration functions ******************************/
00116 void IWDG_WriteAccessCmd(IWDG_WriteAccess_TypeDef IWDG_WriteAccess);
00117 void IWDG_SetPrescaler(IWDG_Prescaler_TypeDef IWDG_Prescaler);
00118 void IWDG_SetReload(uint8_t IWDG_Reload);
00119 void IWDG_ReloadCounter(void);
00120 
00121 /* IWDG activation function ***************************************************/
00122 void IWDG_Enable(void);
00123 
00124 #endif /* __STM8L15x_IWDG_H */
00125 
00126 /**
00127   * @}
00128   */
00129   
00130 /**
00131   * @}
00132   */
00133 
00134 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/