Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/stm32f10x_iwdg.c

Revision:

52:a51c77007319

Child:

70:c1fbde68b492

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F103RB/stm32f10x_iwdg.c	Mon Dec 02 11:30:05 2013 +0000
@@ -0,0 +1,190 @@
+/**
+  ******************************************************************************
+  * @file    stm32f10x_iwdg.c
+  * @author  MCD Application Team
+  * @version V3.5.0
+  * @date    11-March-2011
+  * @brief   This file provides all the IWDG firmware functions.
+  ******************************************************************************
+  * @attention
+  *
+  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
+  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
+  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
+  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
+  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+  *
+  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
+  ******************************************************************************
+  */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f10x_iwdg.h"
+
+/** @addtogroup STM32F10x_StdPeriph_Driver
+  * @{
+  */
+
+/** @defgroup IWDG 
+  * @brief IWDG driver modules
+  * @{
+  */ 
+
+/** @defgroup IWDG_Private_TypesDefinitions
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @defgroup IWDG_Private_Defines
+  * @{
+  */ 
+
+/* ---------------------- IWDG registers bit mask ----------------------------*/
+
+/* KR register bit mask */
+#define KR_KEY_Reload    ((uint16_t)0xAAAA)
+#define KR_KEY_Enable    ((uint16_t)0xCCCC)
+
+/**
+  * @}
+  */ 
+
+/** @defgroup IWDG_Private_Macros
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @defgroup IWDG_Private_Variables
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @defgroup IWDG_Private_FunctionPrototypes
+  * @{
+  */
+
+/**
+  * @}
+  */
+
+/** @defgroup IWDG_Private_Functions
+  * @{
+  */
+
+/**
+  * @brief  Enables or disables write access to IWDG_PR and IWDG_RLR registers.
+  * @param  IWDG_WriteAccess: new state of write access to IWDG_PR and IWDG_RLR registers.
+  *   This parameter can be one of the following values:
+  *     @arg IWDG_WriteAccess_Enable: Enable write access to IWDG_PR and IWDG_RLR registers
+  *     @arg IWDG_WriteAccess_Disable: Disable write access to IWDG_PR and IWDG_RLR registers
+  * @retval None
+  */
+void IWDG_WriteAccessCmd(uint16_t IWDG_WriteAccess)
+{
+  /* Check the parameters */
+  assert_param(IS_IWDG_WRITE_ACCESS(IWDG_WriteAccess));
+  IWDG->KR = IWDG_WriteAccess;
+}
+
+/**
+  * @brief  Sets IWDG Prescaler value.
+  * @param  IWDG_Prescaler: specifies the IWDG Prescaler value.
+  *   This parameter can be one of the following values:
+  *     @arg IWDG_Prescaler_4: IWDG prescaler set to 4
+  *     @arg IWDG_Prescaler_8: IWDG prescaler set to 8
+  *     @arg IWDG_Prescaler_16: IWDG prescaler set to 16
+  *     @arg IWDG_Prescaler_32: IWDG prescaler set to 32
+  *     @arg IWDG_Prescaler_64: IWDG prescaler set to 64
+  *     @arg IWDG_Prescaler_128: IWDG prescaler set to 128
+  *     @arg IWDG_Prescaler_256: IWDG prescaler set to 256
+  * @retval None
+  */
+void IWDG_SetPrescaler(uint8_t IWDG_Prescaler)
+{
+  /* Check the parameters */
+  assert_param(IS_IWDG_PRESCALER(IWDG_Prescaler));
+  IWDG->PR = IWDG_Prescaler;
+}
+
+/**
+  * @brief  Sets IWDG Reload value.
+  * @param  Reload: specifies the IWDG Reload value.
+  *   This parameter must be a number between 0 and 0x0FFF.
+  * @retval None
+  */
+void IWDG_SetReload(uint16_t Reload)
+{
+  /* Check the parameters */
+  assert_param(IS_IWDG_RELOAD(Reload));
+  IWDG->RLR = Reload;
+}
+
+/**
+  * @brief  Reloads IWDG counter with value defined in the reload register
+  *   (write access to IWDG_PR and IWDG_RLR registers disabled).
+  * @param  None
+  * @retval None
+  */
+void IWDG_ReloadCounter(void)
+{
+  IWDG->KR = KR_KEY_Reload;
+}
+
+/**
+  * @brief  Enables IWDG (write access to IWDG_PR and IWDG_RLR registers disabled).
+  * @param  None
+  * @retval None
+  */
+void IWDG_Enable(void)
+{
+  IWDG->KR = KR_KEY_Enable;
+}
+
+/**
+  * @brief  Checks whether the specified IWDG flag is set or not.
+  * @param  IWDG_FLAG: specifies the flag to check.
+  *   This parameter can be one of the following values:
+  *     @arg IWDG_FLAG_PVU: Prescaler Value Update on going
+  *     @arg IWDG_FLAG_RVU: Reload Value Update on going
+  * @retval The new state of IWDG_FLAG (SET or RESET).
+  */
+FlagStatus IWDG_GetFlagStatus(uint16_t IWDG_FLAG)
+{
+  FlagStatus bitstatus = RESET;
+  /* Check the parameters */
+  assert_param(IS_IWDG_FLAG(IWDG_FLAG));
+  if ((IWDG->SR & IWDG_FLAG) != (uint32_t)RESET)
+  {
+    bitstatus = SET;
+  }
+  else
+  {
+    bitstatus = RESET;
+  }
+  /* Return the flag status */
+  return bitstatus;
+}
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/**
+  * @}
+  */
+
+/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/