en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_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 stm32f3xx_hal_iwdg.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
bogdanm 0:9b334a45a8ff 5 * @version V1.1.0
bogdanm 0:9b334a45a8ff 6 * @date 12-Sept-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 Independent Watchdog (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 (+) Min-max timeout value @41KHz (LSI): ~0.1ms / ~25.5s
bogdanm 0:9b334a45a8ff 36 The IWDG timeout may vary due to LSI frequency dispersion. STM32F30x
bogdanm 0:9b334a45a8ff 37 devices provide the capability to measure the LSI frequency (LSI clock
bogdanm 0:9b334a45a8ff 38 connected internally to TIM16 CH1 input capture). The measured value
bogdanm 0:9b334a45a8ff 39 can be used to have an IWDG timeout with an acceptable accuracy.
bogdanm 0:9b334a45a8ff 40 For more information, please refer to the STM32F3xx Reference manual.
bogdanm 0:9b334a45a8ff 41
bogdanm 0:9b334a45a8ff 42 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 43 ==============================================================================
bogdanm 0:9b334a45a8ff 44 [..]
bogdanm 0:9b334a45a8ff 45 (#) if Window option is disabled
bogdanm 0:9b334a45a8ff 46 (+) Use IWDG using HAL_IWDG_Init() function to :
bogdanm 0:9b334a45a8ff 47 (++) Enable write access to IWDG_PR, IWDG_RLR.
bogdanm 0:9b334a45a8ff 48 (++) Configure the IWDG prescaler, counter reload value.
bogdanm 0:9b334a45a8ff 49 This reload value will be loaded in the IWDG counter each time the counter
bogdanm 0:9b334a45a8ff 50 is reloaded, then the IWDG will start counting down from this value.
bogdanm 0:9b334a45a8ff 51 (+) Use IWDG using HAL_IWDG_Start() function to :
bogdanm 0:9b334a45a8ff 52 (++) Reload IWDG counter with value defined in the IWDG_RLR register.
bogdanm 0:9b334a45a8ff 53 (++) Start the IWDG, when the IWDG is used in software mode (no need
bogdanm 0:9b334a45a8ff 54 to enable the LSI, it will be enabled by hardware).
bogdanm 0:9b334a45a8ff 55 (+) Then the application program must refresh the IWDG counter at regular
bogdanm 0:9b334a45a8ff 56 intervals during normal operation to prevent an MCU reset, using
bogdanm 0:9b334a45a8ff 57 HAL_IWDG_Refresh() function.
bogdanm 0:9b334a45a8ff 58 (#) if Window option is enabled:
bogdanm 0:9b334a45a8ff 59 (+) Use IWDG using HAL_IWDG_Start() function to enable IWDG downcounter
bogdanm 0:9b334a45a8ff 60 (+) Use IWDG using HAL_IWDG_Init() function to :
bogdanm 0:9b334a45a8ff 61 (++) Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
bogdanm 0:9b334a45a8ff 62 (++) Configure the IWDG prescaler, reload value and window value.
bogdanm 0:9b334a45a8ff 63 (+) Then the application program must refresh the IWDG counter at regular
bogdanm 0:9b334a45a8ff 64 intervals during normal operation to prevent an MCU reset, using
bogdanm 0:9b334a45a8ff 65 HAL_IWDG_Refresh() function.
bogdanm 0:9b334a45a8ff 66
bogdanm 0:9b334a45a8ff 67 *** IWDG HAL driver macros list ***
bogdanm 0:9b334a45a8ff 68 ====================================
bogdanm 0:9b334a45a8ff 69 [..]
bogdanm 0:9b334a45a8ff 70 Below the list of most used macros in IWDG HAL driver.
bogdanm 0:9b334a45a8ff 71
bogdanm 0:9b334a45a8ff 72 (+) __HAL_IWDG_START: Enable the IWDG peripheral
bogdanm 0:9b334a45a8ff 73 (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register
bogdanm 0:9b334a45a8ff 74 (+) __HAL_IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers
bogdanm 0:9b334a45a8ff 75 (+) __HAL_IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers
bogdanm 0:9b334a45a8ff 76 (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78 @endverbatim
bogdanm 0:9b334a45a8ff 79 ******************************************************************************
bogdanm 0:9b334a45a8ff 80 * @attention
bogdanm 0:9b334a45a8ff 81 *
bogdanm 0:9b334a45a8ff 82 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 83 *
bogdanm 0:9b334a45a8ff 84 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 85 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 86 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 87 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 88 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 89 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 90 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 91 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 92 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 93 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 94 *
bogdanm 0:9b334a45a8ff 95 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 96 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 97 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 98 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 99 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 100 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 101 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 102 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 103 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 104 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 105 *
bogdanm 0:9b334a45a8ff 106 ******************************************************************************
bogdanm 0:9b334a45a8ff 107 */
bogdanm 0:9b334a45a8ff 108
bogdanm 0:9b334a45a8ff 109 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 110 #include "stm32f3xx_hal.h"
bogdanm 0:9b334a45a8ff 111
bogdanm 0:9b334a45a8ff 112 /** @addtogroup STM32F3xx_HAL_Driver
bogdanm 0:9b334a45a8ff 113 * @{
bogdanm 0:9b334a45a8ff 114 */
bogdanm 0:9b334a45a8ff 115
bogdanm 0:9b334a45a8ff 116 /** @defgroup IWDG IWDG HAL module driver
bogdanm 0:9b334a45a8ff 117 * @brief IWDG HAL module driver.
bogdanm 0:9b334a45a8ff 118 * @{
bogdanm 0:9b334a45a8ff 119 */
bogdanm 0:9b334a45a8ff 120
bogdanm 0:9b334a45a8ff 121 #ifdef HAL_IWDG_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 122
bogdanm 0:9b334a45a8ff 123 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 124 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 125
bogdanm 0:9b334a45a8ff 126 /** @defgroup IWDG_Private_Defines IWDG Private Defines
bogdanm 0:9b334a45a8ff 127 * @{
bogdanm 0:9b334a45a8ff 128 */
bogdanm 0:9b334a45a8ff 129 #define HAL_IWDG_DEFAULT_TIMEOUT (uint32_t)1000
bogdanm 0:9b334a45a8ff 130 /**
bogdanm 0:9b334a45a8ff 131 * @}
bogdanm 0:9b334a45a8ff 132 */
bogdanm 0:9b334a45a8ff 133
bogdanm 0:9b334a45a8ff 134 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 135 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 136 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 137 /* Private functions ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 138
bogdanm 0:9b334a45a8ff 139 /** @defgroup IWDG_Exported_Functions IWDG Exported Functions
bogdanm 0:9b334a45a8ff 140 * @{
bogdanm 0:9b334a45a8ff 141 */
bogdanm 0:9b334a45a8ff 142
bogdanm 0:9b334a45a8ff 143 /** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 144 * @brief Initialization and Configuration functions.
bogdanm 0:9b334a45a8ff 145 *
bogdanm 0:9b334a45a8ff 146 @verbatim
bogdanm 0:9b334a45a8ff 147 ===============================================================================
bogdanm 0:9b334a45a8ff 148 ##### Initialization functions #####
bogdanm 0:9b334a45a8ff 149 ===============================================================================
bogdanm 0:9b334a45a8ff 150 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 151 (+) Initialize the IWDG according to the specified parameters
bogdanm 0:9b334a45a8ff 152 in the IWDG_InitTypeDef and create the associated handle
bogdanm 0:9b334a45a8ff 153 (+) Manage Window option
bogdanm 0:9b334a45a8ff 154 (+) Initialize the IWDG MSP
bogdanm 0:9b334a45a8ff 155
bogdanm 0:9b334a45a8ff 156 @endverbatim
bogdanm 0:9b334a45a8ff 157 * @{
bogdanm 0:9b334a45a8ff 158 */
bogdanm 0:9b334a45a8ff 159
bogdanm 0:9b334a45a8ff 160 /**
bogdanm 0:9b334a45a8ff 161 * @brief Initializes the IWDG according to the specified
bogdanm 0:9b334a45a8ff 162 * parameters in the IWDG_InitTypeDef and creates the associated handle.
bogdanm 0:9b334a45a8ff 163 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 164 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 165 * @retval HAL status
bogdanm 0:9b334a45a8ff 166 */
bogdanm 0:9b334a45a8ff 167 HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 168 {
bogdanm 0:9b334a45a8ff 169 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 170
bogdanm 0:9b334a45a8ff 171 /* Check the IWDG handle allocation */
bogdanm 0:9b334a45a8ff 172 if(hiwdg == HAL_NULL)
bogdanm 0:9b334a45a8ff 173 {
bogdanm 0:9b334a45a8ff 174 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 175 }
bogdanm 0:9b334a45a8ff 176
bogdanm 0:9b334a45a8ff 177 /* Check the parameters */
bogdanm 0:9b334a45a8ff 178 assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance));
bogdanm 0:9b334a45a8ff 179 assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
bogdanm 0:9b334a45a8ff 180 assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
bogdanm 0:9b334a45a8ff 181 assert_param(IS_IWDG_WINDOW(hiwdg->Init.Window));
bogdanm 0:9b334a45a8ff 182
bogdanm 0:9b334a45a8ff 183 /* Check pending flag, if previous update not done, return error */
bogdanm 0:9b334a45a8ff 184 if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
bogdanm 0:9b334a45a8ff 185 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 186 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_WVU) != RESET))
bogdanm 0:9b334a45a8ff 187 {
bogdanm 0:9b334a45a8ff 188 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 189 }
bogdanm 0:9b334a45a8ff 190
bogdanm 0:9b334a45a8ff 191 if(hiwdg->State == HAL_IWDG_STATE_RESET)
bogdanm 0:9b334a45a8ff 192 {
bogdanm 0:9b334a45a8ff 193 /* Init the low level hardware */
bogdanm 0:9b334a45a8ff 194 HAL_IWDG_MspInit(hiwdg);
bogdanm 0:9b334a45a8ff 195 }
bogdanm 0:9b334a45a8ff 196
bogdanm 0:9b334a45a8ff 197 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 198 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 199
bogdanm 0:9b334a45a8ff 200 /* Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers */
bogdanm 0:9b334a45a8ff 201 /* by writing 0x5555 in KR */
bogdanm 0:9b334a45a8ff 202 __HAL_IWDG_ENABLE_WRITE_ACCESS(hiwdg);
bogdanm 0:9b334a45a8ff 203
bogdanm 0:9b334a45a8ff 204 /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
bogdanm 0:9b334a45a8ff 205 MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler);
bogdanm 0:9b334a45a8ff 206 MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload);
bogdanm 0:9b334a45a8ff 207
bogdanm 0:9b334a45a8ff 208 /* check if window option is enabled */
bogdanm 0:9b334a45a8ff 209 if (((hiwdg->Init.Window) != IWDG_WINDOW_DISABLE) || ((hiwdg->Instance->WINR) != IWDG_WINDOW_DISABLE))
bogdanm 0:9b334a45a8ff 210 {
bogdanm 0:9b334a45a8ff 211 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 212
bogdanm 0:9b334a45a8ff 213 /* Wait for register to be updated */
bogdanm 0:9b334a45a8ff 214 while((uint32_t)(hiwdg->Instance->SR) != RESET)
bogdanm 0:9b334a45a8ff 215 {
bogdanm 0:9b334a45a8ff 216 if((HAL_GetTick()-tickstart) > HAL_IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 217 {
bogdanm 0:9b334a45a8ff 218 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 219 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 220 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 221 }
bogdanm 0:9b334a45a8ff 222 }
bogdanm 0:9b334a45a8ff 223
bogdanm 0:9b334a45a8ff 224 /* Write to IWDG WINR the IWDG_Window value to compare with */
bogdanm 0:9b334a45a8ff 225 MODIFY_REG(hiwdg->Instance->WINR, IWDG_WINR_WIN, hiwdg->Init.Window);
bogdanm 0:9b334a45a8ff 226
bogdanm 0:9b334a45a8ff 227 }
bogdanm 0:9b334a45a8ff 228 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 229 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 230
bogdanm 0:9b334a45a8ff 231 /* Return function status */
bogdanm 0:9b334a45a8ff 232 return HAL_OK;
bogdanm 0:9b334a45a8ff 233 }
bogdanm 0:9b334a45a8ff 234
bogdanm 0:9b334a45a8ff 235 /**
bogdanm 0:9b334a45a8ff 236 * @brief Initializes the IWDG MSP.
bogdanm 0:9b334a45a8ff 237 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 238 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 239 * @retval None
bogdanm 0:9b334a45a8ff 240 */
bogdanm 0:9b334a45a8ff 241 __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 242 {
bogdanm 0:9b334a45a8ff 243 /* NOTE : This function Should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 244 the HAL_IWDG_MspInit could be implemented in the user file
bogdanm 0:9b334a45a8ff 245 */
bogdanm 0:9b334a45a8ff 246 }
bogdanm 0:9b334a45a8ff 247
bogdanm 0:9b334a45a8ff 248 /**
bogdanm 0:9b334a45a8ff 249 * @}
bogdanm 0:9b334a45a8ff 250 */
bogdanm 0:9b334a45a8ff 251
bogdanm 0:9b334a45a8ff 252 /** @defgroup IWDG_Exported_Functions_Group2 Input and Output operation functions
bogdanm 0:9b334a45a8ff 253 * @brief IO operation functions
bogdanm 0:9b334a45a8ff 254 *
bogdanm 0:9b334a45a8ff 255 @verbatim
bogdanm 0:9b334a45a8ff 256 ===============================================================================
bogdanm 0:9b334a45a8ff 257 ##### IO operation functions #####
bogdanm 0:9b334a45a8ff 258 ===============================================================================
bogdanm 0:9b334a45a8ff 259 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 260 (+) Start the IWDG.
bogdanm 0:9b334a45a8ff 261 (+) Refresh the IWDG.
bogdanm 0:9b334a45a8ff 262
bogdanm 0:9b334a45a8ff 263 @endverbatim
bogdanm 0:9b334a45a8ff 264 * @{
bogdanm 0:9b334a45a8ff 265 */
bogdanm 0:9b334a45a8ff 266
bogdanm 0:9b334a45a8ff 267 /**
bogdanm 0:9b334a45a8ff 268 * @brief Starts the IWDG.
bogdanm 0:9b334a45a8ff 269 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 270 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 271 * @retval HAL status
bogdanm 0:9b334a45a8ff 272 */
bogdanm 0:9b334a45a8ff 273 HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 274 {
bogdanm 0:9b334a45a8ff 275 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 276
bogdanm 0:9b334a45a8ff 277 /* Process Locked */
bogdanm 0:9b334a45a8ff 278 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 279
bogdanm 0:9b334a45a8ff 280 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 281 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 282
bogdanm 0:9b334a45a8ff 283 /* Reload IWDG counter with value defined in the RLR register */
bogdanm 0:9b334a45a8ff 284 if ((hiwdg->Init.Window) == IWDG_WINDOW_DISABLE)
bogdanm 0:9b334a45a8ff 285 {
bogdanm 0:9b334a45a8ff 286 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 287 }
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 /* Enable the IWDG peripheral */
bogdanm 0:9b334a45a8ff 290 __HAL_IWDG_START(hiwdg);
bogdanm 0:9b334a45a8ff 291
bogdanm 0:9b334a45a8ff 292 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 293
bogdanm 0:9b334a45a8ff 294 /* Wait until PVU, RVU, WVU flag are RESET */
bogdanm 0:9b334a45a8ff 295 while( (__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
bogdanm 0:9b334a45a8ff 296 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 297 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_WVU) != RESET) )
bogdanm 0:9b334a45a8ff 298 {
bogdanm 0:9b334a45a8ff 299 if((HAL_GetTick()-tickstart) > HAL_IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 300 {
bogdanm 0:9b334a45a8ff 301 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 302 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 303
bogdanm 0:9b334a45a8ff 304 /* Process unlocked */
bogdanm 0:9b334a45a8ff 305 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 306
bogdanm 0:9b334a45a8ff 307 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 308 }
bogdanm 0:9b334a45a8ff 309 }
bogdanm 0:9b334a45a8ff 310
bogdanm 0:9b334a45a8ff 311 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 312 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 313
bogdanm 0:9b334a45a8ff 314 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 315 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 316
bogdanm 0:9b334a45a8ff 317 /* Return function status */
bogdanm 0:9b334a45a8ff 318 return HAL_OK;
bogdanm 0:9b334a45a8ff 319 }
bogdanm 0:9b334a45a8ff 320
bogdanm 0:9b334a45a8ff 321 /**
bogdanm 0:9b334a45a8ff 322 * @brief Refreshes the IWDG.
bogdanm 0:9b334a45a8ff 323 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 324 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 325 * @retval HAL status
bogdanm 0:9b334a45a8ff 326 */
bogdanm 0:9b334a45a8ff 327 HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 328 {
bogdanm 0:9b334a45a8ff 329 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 330
bogdanm 0:9b334a45a8ff 331 /* Process Locked */
bogdanm 0:9b334a45a8ff 332 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 333
bogdanm 0:9b334a45a8ff 334 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 335 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 336
bogdanm 0:9b334a45a8ff 337 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 338
bogdanm 0:9b334a45a8ff 339 /* Wait until RVU flag is RESET */
bogdanm 0:9b334a45a8ff 340 while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 341 {
bogdanm 0:9b334a45a8ff 342 if((HAL_GetTick()-tickstart) > HAL_IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 343 {
bogdanm 0:9b334a45a8ff 344 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 345 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 346
bogdanm 0:9b334a45a8ff 347 /* Process unlocked */
bogdanm 0:9b334a45a8ff 348 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 349
bogdanm 0:9b334a45a8ff 350 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 351 }
bogdanm 0:9b334a45a8ff 352 }
bogdanm 0:9b334a45a8ff 353
bogdanm 0:9b334a45a8ff 354 /* Reload IWDG counter with value defined in the reload register */
bogdanm 0:9b334a45a8ff 355 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 356
bogdanm 0:9b334a45a8ff 357 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 358 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 359
bogdanm 0:9b334a45a8ff 360 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 361 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 362
bogdanm 0:9b334a45a8ff 363 /* Return function status */
bogdanm 0:9b334a45a8ff 364 return HAL_OK;
bogdanm 0:9b334a45a8ff 365 }
bogdanm 0:9b334a45a8ff 366
bogdanm 0:9b334a45a8ff 367 /**
bogdanm 0:9b334a45a8ff 368 * @}
bogdanm 0:9b334a45a8ff 369 */
bogdanm 0:9b334a45a8ff 370
bogdanm 0:9b334a45a8ff 371 /** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions
bogdanm 0:9b334a45a8ff 372 * @brief Peripheral State functions.
bogdanm 0:9b334a45a8ff 373 *
bogdanm 0:9b334a45a8ff 374 @verbatim
bogdanm 0:9b334a45a8ff 375 ===============================================================================
bogdanm 0:9b334a45a8ff 376 ##### Peripheral State functions #####
bogdanm 0:9b334a45a8ff 377 ===============================================================================
bogdanm 0:9b334a45a8ff 378 [..]
bogdanm 0:9b334a45a8ff 379 This subsection permits to get in run-time the status of the peripheral
bogdanm 0:9b334a45a8ff 380 and the data flow.
bogdanm 0:9b334a45a8ff 381
bogdanm 0:9b334a45a8ff 382 @endverbatim
bogdanm 0:9b334a45a8ff 383 * @{
bogdanm 0:9b334a45a8ff 384 */
bogdanm 0:9b334a45a8ff 385
bogdanm 0:9b334a45a8ff 386 /**
bogdanm 0:9b334a45a8ff 387 * @brief Returns the IWDG state.
bogdanm 0:9b334a45a8ff 388 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 389 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 390 * @retval HAL state
bogdanm 0:9b334a45a8ff 391 */
bogdanm 0:9b334a45a8ff 392 HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 393 {
bogdanm 0:9b334a45a8ff 394 return hiwdg->State;
bogdanm 0:9b334a45a8ff 395 }
bogdanm 0:9b334a45a8ff 396
bogdanm 0:9b334a45a8ff 397 /**
bogdanm 0:9b334a45a8ff 398 * @}
bogdanm 0:9b334a45a8ff 399 */
bogdanm 0:9b334a45a8ff 400
bogdanm 0:9b334a45a8ff 401 /**
bogdanm 0:9b334a45a8ff 402 * @}
bogdanm 0:9b334a45a8ff 403 */
bogdanm 0:9b334a45a8ff 404
bogdanm 0:9b334a45a8ff 405 #endif /* HAL_IWDG_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 406 /**
bogdanm 0:9b334a45a8ff 407 * @}
bogdanm 0:9b334a45a8ff 408 */
bogdanm 0:9b334a45a8ff 409
bogdanm 0:9b334a45a8ff 410 /**
bogdanm 0:9b334a45a8ff 411 * @}
bogdanm 0:9b334a45a8ff 412 */
bogdanm 0:9b334a45a8ff 413
bogdanm 0:9b334a45a8ff 414 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/