en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32L1/stm32l1xx_hal_iwdg.c@0:9b334a45a8ff, 2015-10-01 (annotated)

Committer:
bogdanm
Date:
Thu Oct 01 15:25:22 2015 +0300
Revision:
0:9b334a45a8ff
Initial commit on mbed-dev



Replaces mbed-src (now inactive)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**
bogdanm 0:9b334a45a8ff 2 ******************************************************************************
bogdanm 0:9b334a45a8ff 3 * @file stm32l1xx_hal_iwdg.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
bogdanm 0:9b334a45a8ff 5 * @version V1.0.0
bogdanm 0:9b334a45a8ff 6 * @date 5-September-2014
bogdanm 0:9b334a45a8ff 7 * @brief IWDG HAL module driver.
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 * This file provides firmware functions to manage the following
bogdanm 0:9b334a45a8ff 10 * functionalities of the IWDG peripheral:
bogdanm 0:9b334a45a8ff 11 * + Initialization and Configuration functions
bogdanm 0:9b334a45a8ff 12 * + IO operation functions
bogdanm 0:9b334a45a8ff 13 * + Peripheral State functions
bogdanm 0:9b334a45a8ff 14 *
bogdanm 0:9b334a45a8ff 15 @verbatim
bogdanm 0:9b334a45a8ff 16
bogdanm 0:9b334a45a8ff 17 ================================================================================
bogdanm 0:9b334a45a8ff 18 ##### IWDG specific features #####
bogdanm 0:9b334a45a8ff 19 ================================================================================
bogdanm 0:9b334a45a8ff 20 [..]
bogdanm 0:9b334a45a8ff 21 (+) The IWDG can be started by either software or hardware (configurable
bogdanm 0:9b334a45a8ff 22 through option byte).
bogdanm 0:9b334a45a8ff 23 (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and
bogdanm 0:9b334a45a8ff 24 thus stays active even if the main clock fails.
bogdanm 0:9b334a45a8ff 25 (+) Once the IWDG is started, the LSI is forced ON and cannot be disabled
bogdanm 0:9b334a45a8ff 26 (LSI cannot be disabled too), and the counter starts counting down from
bogdanm 0:9b334a45a8ff 27 the reset value of 0xFFF. When it reaches the end of count value (0x000)
bogdanm 0:9b334a45a8ff 28 a system reset is generated.
bogdanm 0:9b334a45a8ff 29 (+) The IWDG counter should be refreshed at regular intervals, otherwise the
bogdanm 0:9b334a45a8ff 30 watchdog generates an MCU reset when the counter reaches 0.
bogdanm 0:9b334a45a8ff 31 (+) The IWDG is implemented in the VDD voltage domain that is still functional
bogdanm 0:9b334a45a8ff 32 in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY).
bogdanm 0:9b334a45a8ff 33 (+) IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
bogdanm 0:9b334a45a8ff 34 reset occurs.
bogdanm 0:9b334a45a8ff 35
bogdanm 0:9b334a45a8ff 36 (+) Min-max timeout value @37KHz (LSI): ~108us / ~28.3s
bogdanm 0:9b334a45a8ff 37 The IWDG timeout may vary due to LSI frequency dispersion. STM32L1xx
bogdanm 0:9b334a45a8ff 38 devices provide the capability to measure the LSI frequency (LSI clock
bogdanm 0:9b334a45a8ff 39 connected internally to TIM10 CH1 input capture). The measured value
bogdanm 0:9b334a45a8ff 40 can be used to have an IWDG timeout with an acceptable accuracy.
bogdanm 0:9b334a45a8ff 41 For more information, please refer to the STM32L1xx Reference manual.
bogdanm 0:9b334a45a8ff 42
bogdanm 0:9b334a45a8ff 43 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 44 ==============================================================================
bogdanm 0:9b334a45a8ff 45 [..]
bogdanm 0:9b334a45a8ff 46 (+) Set the IWDG prescaler and reload value
bogdanm 0:9b334a45a8ff 47 using HAL_IWDG_Init() function.
bogdanm 0:9b334a45a8ff 48 (+) Use IWDG using HAL_IWDG_Start() function to:
bogdanm 0:9b334a45a8ff 49 (++) Enable write access to IWDG_PR and IWDG_RLR registers.
bogdanm 0:9b334a45a8ff 50 (++) Configure the IWDG prescaler and counter reload values.
bogdanm 0:9b334a45a8ff 51 (++) Reload IWDG counter with value defined in the IWDG_RLR register.
bogdanm 0:9b334a45a8ff 52 (++) Start the IWDG, when the IWDG is used in software mode (no need
bogdanm 0:9b334a45a8ff 53 to enable the LSI, it will be enabled by hardware).
bogdanm 0:9b334a45a8ff 54 (+) Then the application program must refresh the IWDG counter at regular
bogdanm 0:9b334a45a8ff 55 intervals during normal operation to prevent an MCU reset, using
bogdanm 0:9b334a45a8ff 56 HAL_IWDG_Refresh() function.
bogdanm 0:9b334a45a8ff 57
bogdanm 0:9b334a45a8ff 58 *** IWDG HAL driver macros list ***
bogdanm 0:9b334a45a8ff 59 ====================================
bogdanm 0:9b334a45a8ff 60 [..]
bogdanm 0:9b334a45a8ff 61 Below the list of most used macros in IWDG HAL driver.
bogdanm 0:9b334a45a8ff 62
bogdanm 0:9b334a45a8ff 63 (+) __HAL_IWDG_START: Enable the IWDG peripheral
bogdanm 0:9b334a45a8ff 64 (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register
bogdanm 0:9b334a45a8ff 65 (+) __HAL_IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers
bogdanm 0:9b334a45a8ff 66 (+) __HAL_IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers
bogdanm 0:9b334a45a8ff 67 (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
bogdanm 0:9b334a45a8ff 68 (+) __HAL_IWDG_CLEAR_FLAG: Clear the IWDG's pending flags
bogdanm 0:9b334a45a8ff 69
bogdanm 0:9b334a45a8ff 70 @endverbatim
bogdanm 0:9b334a45a8ff 71 ******************************************************************************
bogdanm 0:9b334a45a8ff 72 * @attention
bogdanm 0:9b334a45a8ff 73 *
bogdanm 0:9b334a45a8ff 74 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 75 *
bogdanm 0:9b334a45a8ff 76 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 77 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 78 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 79 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 80 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 81 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 82 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 83 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 84 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 85 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 86 *
bogdanm 0:9b334a45a8ff 87 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 88 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 89 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 90 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 91 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 92 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 93 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 94 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 95 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 96 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 97 *
bogdanm 0:9b334a45a8ff 98 ******************************************************************************
bogdanm 0:9b334a45a8ff 99 */
bogdanm 0:9b334a45a8ff 100
bogdanm 0:9b334a45a8ff 101 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 102 #include "stm32l1xx_hal.h"
bogdanm 0:9b334a45a8ff 103
bogdanm 0:9b334a45a8ff 104 /** @addtogroup STM32L1xx_HAL_Driver
bogdanm 0:9b334a45a8ff 105 * @{
bogdanm 0:9b334a45a8ff 106 */
bogdanm 0:9b334a45a8ff 107
bogdanm 0:9b334a45a8ff 108 /** @defgroup IWDG IWDG
bogdanm 0:9b334a45a8ff 109 * @brief IWDG HAL module driver.
bogdanm 0:9b334a45a8ff 110 * @{
bogdanm 0:9b334a45a8ff 111 */
bogdanm 0:9b334a45a8ff 112
bogdanm 0:9b334a45a8ff 113 #ifdef HAL_IWDG_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 114
bogdanm 0:9b334a45a8ff 115 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 116 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 117
bogdanm 0:9b334a45a8ff 118 /** @defgroup IWDG_Private_Defines IWDG Private Defines
bogdanm 0:9b334a45a8ff 119 * @{
bogdanm 0:9b334a45a8ff 120 */
bogdanm 0:9b334a45a8ff 121
bogdanm 0:9b334a45a8ff 122 #define HAL_IWDG_DEFAULT_TIMEOUT (uint32_t)1000
bogdanm 0:9b334a45a8ff 123
bogdanm 0:9b334a45a8ff 124 /**
bogdanm 0:9b334a45a8ff 125 * @}
bogdanm 0:9b334a45a8ff 126 */
bogdanm 0:9b334a45a8ff 127
bogdanm 0:9b334a45a8ff 128 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 129 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 130 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 131 /* Private functions ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 132
bogdanm 0:9b334a45a8ff 133 /** @defgroup IWDG_Exported_Functions IWDG Exported Functions
bogdanm 0:9b334a45a8ff 134 * @{
bogdanm 0:9b334a45a8ff 135 */
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 /** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 138 * @brief Initialization and Configuration functions.
bogdanm 0:9b334a45a8ff 139 *
bogdanm 0:9b334a45a8ff 140 @verbatim
bogdanm 0:9b334a45a8ff 141 ===============================================================================
bogdanm 0:9b334a45a8ff 142 ##### Initialization and de-initialization functions #####
bogdanm 0:9b334a45a8ff 143 ===============================================================================
bogdanm 0:9b334a45a8ff 144 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 145 (+) Initialize the IWDG according to the specified parameters
bogdanm 0:9b334a45a8ff 146 in the IWDG_InitTypeDef and create the associated handle
bogdanm 0:9b334a45a8ff 147 (+) Initialize the IWDG MSP
bogdanm 0:9b334a45a8ff 148 (+) DeInitialize IWDG MSP
bogdanm 0:9b334a45a8ff 149
bogdanm 0:9b334a45a8ff 150 @endverbatim
bogdanm 0:9b334a45a8ff 151 * @{
bogdanm 0:9b334a45a8ff 152 */
bogdanm 0:9b334a45a8ff 153
bogdanm 0:9b334a45a8ff 154 /**
bogdanm 0:9b334a45a8ff 155 * @brief Initializes the IWDG according to the specified
bogdanm 0:9b334a45a8ff 156 * parameters in the IWDG_InitTypeDef and creates the associated handle.
bogdanm 0:9b334a45a8ff 157 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 158 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 159 * @retval HAL status
bogdanm 0:9b334a45a8ff 160 */
bogdanm 0:9b334a45a8ff 161 HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 162 {
bogdanm 0:9b334a45a8ff 163 /* Check the IWDG handle allocation */
bogdanm 0:9b334a45a8ff 164 if(hiwdg == HAL_NULL)
bogdanm 0:9b334a45a8ff 165 {
bogdanm 0:9b334a45a8ff 166 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 167 }
bogdanm 0:9b334a45a8ff 168
bogdanm 0:9b334a45a8ff 169 /* Check the parameters */
bogdanm 0:9b334a45a8ff 170 assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
bogdanm 0:9b334a45a8ff 171 assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
bogdanm 0:9b334a45a8ff 172 assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
bogdanm 0:9b334a45a8ff 173
bogdanm 0:9b334a45a8ff 174 /* Check pending flag, if previous update not done, return error */
bogdanm 0:9b334a45a8ff 175 if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
bogdanm 0:9b334a45a8ff 176 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET))
bogdanm 0:9b334a45a8ff 177 {
bogdanm 0:9b334a45a8ff 178 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 179 }
bogdanm 0:9b334a45a8ff 180
bogdanm 0:9b334a45a8ff 181 if(hiwdg->State == HAL_IWDG_STATE_RESET)
bogdanm 0:9b334a45a8ff 182 {
bogdanm 0:9b334a45a8ff 183 /* Init the low level hardware */
bogdanm 0:9b334a45a8ff 184 HAL_IWDG_MspInit(hiwdg);
bogdanm 0:9b334a45a8ff 185 }
bogdanm 0:9b334a45a8ff 186
bogdanm 0:9b334a45a8ff 187 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 188 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 189
bogdanm 0:9b334a45a8ff 190 /* Enable write access to IWDG_PR and IWDG_RLR registers */
bogdanm 0:9b334a45a8ff 191 __HAL_IWDG_ENABLE_WRITE_ACCESS(hiwdg);
bogdanm 0:9b334a45a8ff 192
bogdanm 0:9b334a45a8ff 193 /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
bogdanm 0:9b334a45a8ff 194 MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler);
bogdanm 0:9b334a45a8ff 195 MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload);
bogdanm 0:9b334a45a8ff 196
bogdanm 0:9b334a45a8ff 197 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 198 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 199
bogdanm 0:9b334a45a8ff 200 /* Return function status */
bogdanm 0:9b334a45a8ff 201 return HAL_OK;
bogdanm 0:9b334a45a8ff 202 }
bogdanm 0:9b334a45a8ff 203
bogdanm 0:9b334a45a8ff 204 /**
bogdanm 0:9b334a45a8ff 205 * @brief Initializes the IWDG MSP.
bogdanm 0:9b334a45a8ff 206 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 207 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 208 * @retval None
bogdanm 0:9b334a45a8ff 209 */
bogdanm 0:9b334a45a8ff 210 __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 211 {
bogdanm 0:9b334a45a8ff 212 /* NOTE : This function Should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 213 the HAL_IWDG_MspInit could be implemented in the user file
bogdanm 0:9b334a45a8ff 214 */
bogdanm 0:9b334a45a8ff 215 }
bogdanm 0:9b334a45a8ff 216
bogdanm 0:9b334a45a8ff 217 /**
bogdanm 0:9b334a45a8ff 218 * @}
bogdanm 0:9b334a45a8ff 219 */
bogdanm 0:9b334a45a8ff 220
bogdanm 0:9b334a45a8ff 221 /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
bogdanm 0:9b334a45a8ff 222 * @brief IO operation functions
bogdanm 0:9b334a45a8ff 223 *
bogdanm 0:9b334a45a8ff 224 @verbatim
bogdanm 0:9b334a45a8ff 225 ===============================================================================
bogdanm 0:9b334a45a8ff 226 ##### IO operation functions #####
bogdanm 0:9b334a45a8ff 227 ===============================================================================
bogdanm 0:9b334a45a8ff 228 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 229 (+) Start the IWDG.
bogdanm 0:9b334a45a8ff 230 (+) Refresh the IWDG.
bogdanm 0:9b334a45a8ff 231
bogdanm 0:9b334a45a8ff 232 @endverbatim
bogdanm 0:9b334a45a8ff 233 * @{
bogdanm 0:9b334a45a8ff 234 */
bogdanm 0:9b334a45a8ff 235
bogdanm 0:9b334a45a8ff 236 /**
bogdanm 0:9b334a45a8ff 237 * @brief Starts the IWDG.
bogdanm 0:9b334a45a8ff 238 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 239 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 240 * @retval HAL status
bogdanm 0:9b334a45a8ff 241 */
bogdanm 0:9b334a45a8ff 242 HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 243 {
bogdanm 0:9b334a45a8ff 244 /* Process Locked */
bogdanm 0:9b334a45a8ff 245 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 246
bogdanm 0:9b334a45a8ff 247 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 248 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 249
bogdanm 0:9b334a45a8ff 250 /* Start the IWDG peripheral */
bogdanm 0:9b334a45a8ff 251 __HAL_IWDG_START(hiwdg);
bogdanm 0:9b334a45a8ff 252
bogdanm 0:9b334a45a8ff 253 /* Reload IWDG counter with value defined in the RLR register */
bogdanm 0:9b334a45a8ff 254 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 255
bogdanm 0:9b334a45a8ff 256 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 257 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 258
bogdanm 0:9b334a45a8ff 259 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 260 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 261
bogdanm 0:9b334a45a8ff 262 /* Return function status */
bogdanm 0:9b334a45a8ff 263 return HAL_OK;
bogdanm 0:9b334a45a8ff 264 }
bogdanm 0:9b334a45a8ff 265
bogdanm 0:9b334a45a8ff 266 /**
bogdanm 0:9b334a45a8ff 267 * @brief Refreshes the IWDG.
bogdanm 0:9b334a45a8ff 268 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 269 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 270 * @retval HAL status
bogdanm 0:9b334a45a8ff 271 */
bogdanm 0:9b334a45a8ff 272 HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 273 {
bogdanm 0:9b334a45a8ff 274 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 275
bogdanm 0:9b334a45a8ff 276 /* Process Locked */
bogdanm 0:9b334a45a8ff 277 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 278
bogdanm 0:9b334a45a8ff 279 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 280 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 281
bogdanm 0:9b334a45a8ff 282 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 283
bogdanm 0:9b334a45a8ff 284 /* Wait until RVU flag is RESET */
bogdanm 0:9b334a45a8ff 285 while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 286 {
bogdanm 0:9b334a45a8ff 287 if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 288 {
bogdanm 0:9b334a45a8ff 289 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 290 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 291
bogdanm 0:9b334a45a8ff 292 /* Process unlocked */
bogdanm 0:9b334a45a8ff 293 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 294
bogdanm 0:9b334a45a8ff 295 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 296 }
bogdanm 0:9b334a45a8ff 297 }
bogdanm 0:9b334a45a8ff 298
bogdanm 0:9b334a45a8ff 299 /* Reload IWDG counter with value defined in the reload register */
bogdanm 0:9b334a45a8ff 300 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 301
bogdanm 0:9b334a45a8ff 302 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 303 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 304
bogdanm 0:9b334a45a8ff 305 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 306 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 307
bogdanm 0:9b334a45a8ff 308 /* Return function status */
bogdanm 0:9b334a45a8ff 309 return HAL_OK;
bogdanm 0:9b334a45a8ff 310 }
bogdanm 0:9b334a45a8ff 311
bogdanm 0:9b334a45a8ff 312 /**
bogdanm 0:9b334a45a8ff 313 * @}
bogdanm 0:9b334a45a8ff 314 */
bogdanm 0:9b334a45a8ff 315
bogdanm 0:9b334a45a8ff 316 /** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions
bogdanm 0:9b334a45a8ff 317 * @brief Peripheral State functions.
bogdanm 0:9b334a45a8ff 318 *
bogdanm 0:9b334a45a8ff 319 @verbatim
bogdanm 0:9b334a45a8ff 320 ===============================================================================
bogdanm 0:9b334a45a8ff 321 ##### Peripheral State functions #####
bogdanm 0:9b334a45a8ff 322 ===============================================================================
bogdanm 0:9b334a45a8ff 323 [..]
bogdanm 0:9b334a45a8ff 324 This subsection permits to get in run-time the status of the peripheral
bogdanm 0:9b334a45a8ff 325 and the data flow.
bogdanm 0:9b334a45a8ff 326
bogdanm 0:9b334a45a8ff 327 @endverbatim
bogdanm 0:9b334a45a8ff 328 * @{
bogdanm 0:9b334a45a8ff 329 */
bogdanm 0:9b334a45a8ff 330
bogdanm 0:9b334a45a8ff 331 /**
bogdanm 0:9b334a45a8ff 332 * @brief Returns the IWDG state.
bogdanm 0:9b334a45a8ff 333 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 334 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 335 * @retval HAL state
bogdanm 0:9b334a45a8ff 336 */
bogdanm 0:9b334a45a8ff 337 HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 338 {
bogdanm 0:9b334a45a8ff 339 return hiwdg->State;
bogdanm 0:9b334a45a8ff 340 }
bogdanm 0:9b334a45a8ff 341
bogdanm 0:9b334a45a8ff 342 /**
bogdanm 0:9b334a45a8ff 343 * @}
bogdanm 0:9b334a45a8ff 344 */
bogdanm 0:9b334a45a8ff 345
bogdanm 0:9b334a45a8ff 346 /**
bogdanm 0:9b334a45a8ff 347 * @}
bogdanm 0:9b334a45a8ff 348 */
bogdanm 0:9b334a45a8ff 349
bogdanm 0:9b334a45a8ff 350 #endif /* HAL_IWDG_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 351 /**
bogdanm 0:9b334a45a8ff 352 * @}
bogdanm 0:9b334a45a8ff 353 */
bogdanm 0:9b334a45a8ff 354
bogdanm 0:9b334a45a8ff 355 /**
bogdanm 0:9b334a45a8ff 356 * @}
bogdanm 0:9b334a45a8ff 357 */
bogdanm 0:9b334a45a8ff 358
bogdanm 0:9b334a45a8ff 359 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
bogdanm 0:9b334a45a8ff 360