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targets/cmsis/TARGET_STM/TARGET_STM32L1/stm32l1xx_hal_iwdg.c@394:83f921546702, 2014-11-07 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Nov 07 15:45:07 2014 +0000
- Revision:
- 394:83f921546702
- Parent:
- targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_hal_iwdg.c@354:e67efb2aab0e
Synchronized with git revision aab52cb7ec5a665869e507dd988bbfd55b7e087e
Full URL: https://github.com/mbedmicro/mbed/commit/aab52cb7ec5a665869e507dd988bbfd55b7e087e/
Tests: Fix cpputest testrunner
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mbed_official | 354:e67efb2aab0e | 1 | /** |
mbed_official | 354:e67efb2aab0e | 2 | ****************************************************************************** |
mbed_official | 354:e67efb2aab0e | 3 | * @file stm32l1xx_hal_iwdg.c |
mbed_official | 354:e67efb2aab0e | 4 | * @author MCD Application Team |
mbed_official | 354:e67efb2aab0e | 5 | * @version V1.0.0 |
mbed_official | 354:e67efb2aab0e | 6 | * @date 5-September-2014 |
mbed_official | 354:e67efb2aab0e | 7 | * @brief IWDG HAL module driver. |
mbed_official | 354:e67efb2aab0e | 8 | * |
mbed_official | 354:e67efb2aab0e | 9 | * This file provides firmware functions to manage the following |
mbed_official | 354:e67efb2aab0e | 10 | * functionalities of the IWDG peripheral: |
mbed_official | 354:e67efb2aab0e | 11 | * + Initialization and Configuration functions |
mbed_official | 354:e67efb2aab0e | 12 | * + IO operation functions |
mbed_official | 354:e67efb2aab0e | 13 | * + Peripheral State functions |
mbed_official | 354:e67efb2aab0e | 14 | * |
mbed_official | 354:e67efb2aab0e | 15 | @verbatim |
mbed_official | 354:e67efb2aab0e | 16 | |
mbed_official | 354:e67efb2aab0e | 17 | ================================================================================ |
mbed_official | 354:e67efb2aab0e | 18 | ##### IWDG specific features ##### |
mbed_official | 354:e67efb2aab0e | 19 | ================================================================================ |
mbed_official | 354:e67efb2aab0e | 20 | [..] |
mbed_official | 354:e67efb2aab0e | 21 | (+) The IWDG can be started by either software or hardware (configurable |
mbed_official | 354:e67efb2aab0e | 22 | through option byte). |
mbed_official | 354:e67efb2aab0e | 23 | (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and |
mbed_official | 354:e67efb2aab0e | 24 | thus stays active even if the main clock fails. |
mbed_official | 354:e67efb2aab0e | 25 | (+) Once the IWDG is started, the LSI is forced ON and cannot be disabled |
mbed_official | 354:e67efb2aab0e | 26 | (LSI cannot be disabled too), and the counter starts counting down from |
mbed_official | 354:e67efb2aab0e | 27 | the reset value of 0xFFF. When it reaches the end of count value (0x000) |
mbed_official | 354:e67efb2aab0e | 28 | a system reset is generated. |
mbed_official | 354:e67efb2aab0e | 29 | (+) The IWDG counter should be refreshed at regular intervals, otherwise the |
mbed_official | 354:e67efb2aab0e | 30 | watchdog generates an MCU reset when the counter reaches 0. |
mbed_official | 354:e67efb2aab0e | 31 | (+) The IWDG is implemented in the VDD voltage domain that is still functional |
mbed_official | 354:e67efb2aab0e | 32 | in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY). |
mbed_official | 354:e67efb2aab0e | 33 | (+) IWDGRST flag in RCC_CSR register can be used to inform when an IWDG |
mbed_official | 354:e67efb2aab0e | 34 | reset occurs. |
mbed_official | 354:e67efb2aab0e | 35 | |
mbed_official | 354:e67efb2aab0e | 36 | (+) Min-max timeout value @37KHz (LSI): ~108us / ~28.3s |
mbed_official | 354:e67efb2aab0e | 37 | The IWDG timeout may vary due to LSI frequency dispersion. STM32L1xx |
mbed_official | 354:e67efb2aab0e | 38 | devices provide the capability to measure the LSI frequency (LSI clock |
mbed_official | 354:e67efb2aab0e | 39 | connected internally to TIM10 CH1 input capture). The measured value |
mbed_official | 354:e67efb2aab0e | 40 | can be used to have an IWDG timeout with an acceptable accuracy. |
mbed_official | 354:e67efb2aab0e | 41 | For more information, please refer to the STM32L1xx Reference manual. |
mbed_official | 354:e67efb2aab0e | 42 | |
mbed_official | 354:e67efb2aab0e | 43 | ##### How to use this driver ##### |
mbed_official | 354:e67efb2aab0e | 44 | ============================================================================== |
mbed_official | 354:e67efb2aab0e | 45 | [..] |
mbed_official | 354:e67efb2aab0e | 46 | (+) Set the IWDG prescaler and reload value |
mbed_official | 354:e67efb2aab0e | 47 | using HAL_IWDG_Init() function. |
mbed_official | 354:e67efb2aab0e | 48 | (+) Use IWDG using HAL_IWDG_Start() function to: |
mbed_official | 354:e67efb2aab0e | 49 | (++) Enable write access to IWDG_PR and IWDG_RLR registers. |
mbed_official | 354:e67efb2aab0e | 50 | (++) Configure the IWDG prescaler and counter reload values. |
mbed_official | 354:e67efb2aab0e | 51 | (++) Reload IWDG counter with value defined in the IWDG_RLR register. |
mbed_official | 354:e67efb2aab0e | 52 | (++) Start the IWDG, when the IWDG is used in software mode (no need |
mbed_official | 354:e67efb2aab0e | 53 | to enable the LSI, it will be enabled by hardware). |
mbed_official | 354:e67efb2aab0e | 54 | (+) Then the application program must refresh the IWDG counter at regular |
mbed_official | 354:e67efb2aab0e | 55 | intervals during normal operation to prevent an MCU reset, using |
mbed_official | 354:e67efb2aab0e | 56 | HAL_IWDG_Refresh() function. |
mbed_official | 354:e67efb2aab0e | 57 | |
mbed_official | 354:e67efb2aab0e | 58 | *** IWDG HAL driver macros list *** |
mbed_official | 354:e67efb2aab0e | 59 | ==================================== |
mbed_official | 354:e67efb2aab0e | 60 | [..] |
mbed_official | 354:e67efb2aab0e | 61 | Below the list of most used macros in IWDG HAL driver. |
mbed_official | 354:e67efb2aab0e | 62 | |
mbed_official | 354:e67efb2aab0e | 63 | (+) __HAL_IWDG_START: Enable the IWDG peripheral |
mbed_official | 354:e67efb2aab0e | 64 | (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register |
mbed_official | 354:e67efb2aab0e | 65 | (+) __HAL_IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers |
mbed_official | 354:e67efb2aab0e | 66 | (+) __HAL_IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers |
mbed_official | 354:e67efb2aab0e | 67 | (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status |
mbed_official | 354:e67efb2aab0e | 68 | (+) __HAL_IWDG_CLEAR_FLAG: Clear the IWDG's pending flags |
mbed_official | 354:e67efb2aab0e | 69 | |
mbed_official | 354:e67efb2aab0e | 70 | @endverbatim |
mbed_official | 354:e67efb2aab0e | 71 | ****************************************************************************** |
mbed_official | 354:e67efb2aab0e | 72 | * @attention |
mbed_official | 354:e67efb2aab0e | 73 | * |
mbed_official | 354:e67efb2aab0e | 74 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
mbed_official | 354:e67efb2aab0e | 75 | * |
mbed_official | 354:e67efb2aab0e | 76 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 354:e67efb2aab0e | 77 | * are permitted provided that the following conditions are met: |
mbed_official | 354:e67efb2aab0e | 78 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 354:e67efb2aab0e | 79 | * this list of conditions and the following disclaimer. |
mbed_official | 354:e67efb2aab0e | 80 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 354:e67efb2aab0e | 81 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 354:e67efb2aab0e | 82 | * and/or other materials provided with the distribution. |
mbed_official | 354:e67efb2aab0e | 83 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 354:e67efb2aab0e | 84 | * may be used to endorse or promote products derived from this software |
mbed_official | 354:e67efb2aab0e | 85 | * without specific prior written permission. |
mbed_official | 354:e67efb2aab0e | 86 | * |
mbed_official | 354:e67efb2aab0e | 87 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 354:e67efb2aab0e | 88 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 354:e67efb2aab0e | 89 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 354:e67efb2aab0e | 90 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 354:e67efb2aab0e | 91 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 354:e67efb2aab0e | 92 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 354:e67efb2aab0e | 93 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 354:e67efb2aab0e | 94 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 354:e67efb2aab0e | 95 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 354:e67efb2aab0e | 96 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 354:e67efb2aab0e | 97 | * |
mbed_official | 354:e67efb2aab0e | 98 | ****************************************************************************** |
mbed_official | 354:e67efb2aab0e | 99 | */ |
mbed_official | 354:e67efb2aab0e | 100 | |
mbed_official | 354:e67efb2aab0e | 101 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 354:e67efb2aab0e | 102 | #include "stm32l1xx_hal.h" |
mbed_official | 354:e67efb2aab0e | 103 | |
mbed_official | 354:e67efb2aab0e | 104 | /** @addtogroup STM32L1xx_HAL_Driver |
mbed_official | 354:e67efb2aab0e | 105 | * @{ |
mbed_official | 354:e67efb2aab0e | 106 | */ |
mbed_official | 354:e67efb2aab0e | 107 | |
mbed_official | 354:e67efb2aab0e | 108 | /** @defgroup IWDG IWDG |
mbed_official | 354:e67efb2aab0e | 109 | * @brief IWDG HAL module driver. |
mbed_official | 354:e67efb2aab0e | 110 | * @{ |
mbed_official | 354:e67efb2aab0e | 111 | */ |
mbed_official | 354:e67efb2aab0e | 112 | |
mbed_official | 354:e67efb2aab0e | 113 | #ifdef HAL_IWDG_MODULE_ENABLED |
mbed_official | 354:e67efb2aab0e | 114 | |
mbed_official | 354:e67efb2aab0e | 115 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 354:e67efb2aab0e | 116 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 354:e67efb2aab0e | 117 | |
mbed_official | 354:e67efb2aab0e | 118 | /** @defgroup IWDG_Private_Defines IWDG Private Defines |
mbed_official | 354:e67efb2aab0e | 119 | * @{ |
mbed_official | 354:e67efb2aab0e | 120 | */ |
mbed_official | 354:e67efb2aab0e | 121 | |
mbed_official | 354:e67efb2aab0e | 122 | #define HAL_IWDG_DEFAULT_TIMEOUT (uint32_t)1000 |
mbed_official | 354:e67efb2aab0e | 123 | |
mbed_official | 354:e67efb2aab0e | 124 | /** |
mbed_official | 354:e67efb2aab0e | 125 | * @} |
mbed_official | 354:e67efb2aab0e | 126 | */ |
mbed_official | 354:e67efb2aab0e | 127 | |
mbed_official | 354:e67efb2aab0e | 128 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 354:e67efb2aab0e | 129 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 354:e67efb2aab0e | 130 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 354:e67efb2aab0e | 131 | /* Private functions ---------------------------------------------------------*/ |
mbed_official | 354:e67efb2aab0e | 132 | |
mbed_official | 354:e67efb2aab0e | 133 | /** @defgroup IWDG_Exported_Functions IWDG Exported Functions |
mbed_official | 354:e67efb2aab0e | 134 | * @{ |
mbed_official | 354:e67efb2aab0e | 135 | */ |
mbed_official | 354:e67efb2aab0e | 136 | |
mbed_official | 354:e67efb2aab0e | 137 | /** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions |
mbed_official | 354:e67efb2aab0e | 138 | * @brief Initialization and Configuration functions. |
mbed_official | 354:e67efb2aab0e | 139 | * |
mbed_official | 354:e67efb2aab0e | 140 | @verbatim |
mbed_official | 354:e67efb2aab0e | 141 | =============================================================================== |
mbed_official | 354:e67efb2aab0e | 142 | ##### Initialization and de-initialization functions ##### |
mbed_official | 354:e67efb2aab0e | 143 | =============================================================================== |
mbed_official | 354:e67efb2aab0e | 144 | [..] This section provides functions allowing to: |
mbed_official | 354:e67efb2aab0e | 145 | (+) Initialize the IWDG according to the specified parameters |
mbed_official | 354:e67efb2aab0e | 146 | in the IWDG_InitTypeDef and create the associated handle |
mbed_official | 354:e67efb2aab0e | 147 | (+) Initialize the IWDG MSP |
mbed_official | 354:e67efb2aab0e | 148 | (+) DeInitialize IWDG MSP |
mbed_official | 354:e67efb2aab0e | 149 | |
mbed_official | 354:e67efb2aab0e | 150 | @endverbatim |
mbed_official | 354:e67efb2aab0e | 151 | * @{ |
mbed_official | 354:e67efb2aab0e | 152 | */ |
mbed_official | 354:e67efb2aab0e | 153 | |
mbed_official | 354:e67efb2aab0e | 154 | /** |
mbed_official | 354:e67efb2aab0e | 155 | * @brief Initializes the IWDG according to the specified |
mbed_official | 354:e67efb2aab0e | 156 | * parameters in the IWDG_InitTypeDef and creates the associated handle. |
mbed_official | 354:e67efb2aab0e | 157 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 354:e67efb2aab0e | 158 | * the configuration information for the specified IWDG module. |
mbed_official | 354:e67efb2aab0e | 159 | * @retval HAL status |
mbed_official | 354:e67efb2aab0e | 160 | */ |
mbed_official | 354:e67efb2aab0e | 161 | HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 354:e67efb2aab0e | 162 | { |
mbed_official | 354:e67efb2aab0e | 163 | /* Check the IWDG handle allocation */ |
mbed_official | 354:e67efb2aab0e | 164 | if(hiwdg == HAL_NULL) |
mbed_official | 354:e67efb2aab0e | 165 | { |
mbed_official | 354:e67efb2aab0e | 166 | return HAL_ERROR; |
mbed_official | 354:e67efb2aab0e | 167 | } |
mbed_official | 354:e67efb2aab0e | 168 | |
mbed_official | 354:e67efb2aab0e | 169 | /* Check the parameters */ |
mbed_official | 354:e67efb2aab0e | 170 | assert_param(IS_IWDG_ALL_INSTANCE(hiwdg->Instance)); |
mbed_official | 354:e67efb2aab0e | 171 | assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler)); |
mbed_official | 354:e67efb2aab0e | 172 | assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload)); |
mbed_official | 354:e67efb2aab0e | 173 | |
mbed_official | 354:e67efb2aab0e | 174 | /* Check pending flag, if previous update not done, return error */ |
mbed_official | 354:e67efb2aab0e | 175 | if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET) |
mbed_official | 354:e67efb2aab0e | 176 | &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)) |
mbed_official | 354:e67efb2aab0e | 177 | { |
mbed_official | 354:e67efb2aab0e | 178 | return HAL_ERROR; |
mbed_official | 354:e67efb2aab0e | 179 | } |
mbed_official | 354:e67efb2aab0e | 180 | |
mbed_official | 354:e67efb2aab0e | 181 | if(hiwdg->State == HAL_IWDG_STATE_RESET) |
mbed_official | 354:e67efb2aab0e | 182 | { |
mbed_official | 354:e67efb2aab0e | 183 | /* Init the low level hardware */ |
mbed_official | 354:e67efb2aab0e | 184 | HAL_IWDG_MspInit(hiwdg); |
mbed_official | 354:e67efb2aab0e | 185 | } |
mbed_official | 354:e67efb2aab0e | 186 | |
mbed_official | 354:e67efb2aab0e | 187 | /* Change IWDG peripheral state */ |
mbed_official | 354:e67efb2aab0e | 188 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 354:e67efb2aab0e | 189 | |
mbed_official | 354:e67efb2aab0e | 190 | /* Enable write access to IWDG_PR and IWDG_RLR registers */ |
mbed_official | 354:e67efb2aab0e | 191 | __HAL_IWDG_ENABLE_WRITE_ACCESS(hiwdg); |
mbed_official | 354:e67efb2aab0e | 192 | |
mbed_official | 354:e67efb2aab0e | 193 | /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */ |
mbed_official | 354:e67efb2aab0e | 194 | MODIFY_REG(hiwdg->Instance->PR, IWDG_PR_PR, hiwdg->Init.Prescaler); |
mbed_official | 354:e67efb2aab0e | 195 | MODIFY_REG(hiwdg->Instance->RLR, IWDG_RLR_RL, hiwdg->Init.Reload); |
mbed_official | 354:e67efb2aab0e | 196 | |
mbed_official | 354:e67efb2aab0e | 197 | /* Change IWDG peripheral state */ |
mbed_official | 354:e67efb2aab0e | 198 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 354:e67efb2aab0e | 199 | |
mbed_official | 354:e67efb2aab0e | 200 | /* Return function status */ |
mbed_official | 354:e67efb2aab0e | 201 | return HAL_OK; |
mbed_official | 354:e67efb2aab0e | 202 | } |
mbed_official | 354:e67efb2aab0e | 203 | |
mbed_official | 354:e67efb2aab0e | 204 | /** |
mbed_official | 354:e67efb2aab0e | 205 | * @brief Initializes the IWDG MSP. |
mbed_official | 354:e67efb2aab0e | 206 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 354:e67efb2aab0e | 207 | * the configuration information for the specified IWDG module. |
mbed_official | 354:e67efb2aab0e | 208 | * @retval None |
mbed_official | 354:e67efb2aab0e | 209 | */ |
mbed_official | 354:e67efb2aab0e | 210 | __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 354:e67efb2aab0e | 211 | { |
mbed_official | 354:e67efb2aab0e | 212 | /* NOTE : This function Should not be modified, when the callback is needed, |
mbed_official | 354:e67efb2aab0e | 213 | the HAL_IWDG_MspInit could be implemented in the user file |
mbed_official | 354:e67efb2aab0e | 214 | */ |
mbed_official | 354:e67efb2aab0e | 215 | } |
mbed_official | 354:e67efb2aab0e | 216 | |
mbed_official | 354:e67efb2aab0e | 217 | /** |
mbed_official | 354:e67efb2aab0e | 218 | * @} |
mbed_official | 354:e67efb2aab0e | 219 | */ |
mbed_official | 354:e67efb2aab0e | 220 | |
mbed_official | 354:e67efb2aab0e | 221 | /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions |
mbed_official | 354:e67efb2aab0e | 222 | * @brief IO operation functions |
mbed_official | 354:e67efb2aab0e | 223 | * |
mbed_official | 354:e67efb2aab0e | 224 | @verbatim |
mbed_official | 354:e67efb2aab0e | 225 | =============================================================================== |
mbed_official | 354:e67efb2aab0e | 226 | ##### IO operation functions ##### |
mbed_official | 354:e67efb2aab0e | 227 | =============================================================================== |
mbed_official | 354:e67efb2aab0e | 228 | [..] This section provides functions allowing to: |
mbed_official | 354:e67efb2aab0e | 229 | (+) Start the IWDG. |
mbed_official | 354:e67efb2aab0e | 230 | (+) Refresh the IWDG. |
mbed_official | 354:e67efb2aab0e | 231 | |
mbed_official | 354:e67efb2aab0e | 232 | @endverbatim |
mbed_official | 354:e67efb2aab0e | 233 | * @{ |
mbed_official | 354:e67efb2aab0e | 234 | */ |
mbed_official | 354:e67efb2aab0e | 235 | |
mbed_official | 354:e67efb2aab0e | 236 | /** |
mbed_official | 354:e67efb2aab0e | 237 | * @brief Starts the IWDG. |
mbed_official | 354:e67efb2aab0e | 238 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 354:e67efb2aab0e | 239 | * the configuration information for the specified IWDG module. |
mbed_official | 354:e67efb2aab0e | 240 | * @retval HAL status |
mbed_official | 354:e67efb2aab0e | 241 | */ |
mbed_official | 354:e67efb2aab0e | 242 | HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 354:e67efb2aab0e | 243 | { |
mbed_official | 354:e67efb2aab0e | 244 | /* Process Locked */ |
mbed_official | 354:e67efb2aab0e | 245 | __HAL_LOCK(hiwdg); |
mbed_official | 354:e67efb2aab0e | 246 | |
mbed_official | 354:e67efb2aab0e | 247 | /* Change IWDG peripheral state */ |
mbed_official | 354:e67efb2aab0e | 248 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 354:e67efb2aab0e | 249 | |
mbed_official | 354:e67efb2aab0e | 250 | /* Start the IWDG peripheral */ |
mbed_official | 354:e67efb2aab0e | 251 | __HAL_IWDG_START(hiwdg); |
mbed_official | 354:e67efb2aab0e | 252 | |
mbed_official | 354:e67efb2aab0e | 253 | /* Reload IWDG counter with value defined in the RLR register */ |
mbed_official | 354:e67efb2aab0e | 254 | __HAL_IWDG_RELOAD_COUNTER(hiwdg); |
mbed_official | 354:e67efb2aab0e | 255 | |
mbed_official | 354:e67efb2aab0e | 256 | /* Change IWDG peripheral state */ |
mbed_official | 354:e67efb2aab0e | 257 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 354:e67efb2aab0e | 258 | |
mbed_official | 354:e67efb2aab0e | 259 | /* Process Unlocked */ |
mbed_official | 354:e67efb2aab0e | 260 | __HAL_UNLOCK(hiwdg); |
mbed_official | 354:e67efb2aab0e | 261 | |
mbed_official | 354:e67efb2aab0e | 262 | /* Return function status */ |
mbed_official | 354:e67efb2aab0e | 263 | return HAL_OK; |
mbed_official | 354:e67efb2aab0e | 264 | } |
mbed_official | 354:e67efb2aab0e | 265 | |
mbed_official | 354:e67efb2aab0e | 266 | /** |
mbed_official | 354:e67efb2aab0e | 267 | * @brief Refreshes the IWDG. |
mbed_official | 354:e67efb2aab0e | 268 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 354:e67efb2aab0e | 269 | * the configuration information for the specified IWDG module. |
mbed_official | 354:e67efb2aab0e | 270 | * @retval HAL status |
mbed_official | 354:e67efb2aab0e | 271 | */ |
mbed_official | 354:e67efb2aab0e | 272 | HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 354:e67efb2aab0e | 273 | { |
mbed_official | 354:e67efb2aab0e | 274 | uint32_t tickstart = 0; |
mbed_official | 354:e67efb2aab0e | 275 | |
mbed_official | 354:e67efb2aab0e | 276 | /* Process Locked */ |
mbed_official | 354:e67efb2aab0e | 277 | __HAL_LOCK(hiwdg); |
mbed_official | 354:e67efb2aab0e | 278 | |
mbed_official | 354:e67efb2aab0e | 279 | /* Change IWDG peripheral state */ |
mbed_official | 354:e67efb2aab0e | 280 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 354:e67efb2aab0e | 281 | |
mbed_official | 354:e67efb2aab0e | 282 | tickstart = HAL_GetTick(); |
mbed_official | 354:e67efb2aab0e | 283 | |
mbed_official | 354:e67efb2aab0e | 284 | /* Wait until RVU flag is RESET */ |
mbed_official | 354:e67efb2aab0e | 285 | while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET) |
mbed_official | 354:e67efb2aab0e | 286 | { |
mbed_official | 354:e67efb2aab0e | 287 | if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT) |
mbed_official | 354:e67efb2aab0e | 288 | { |
mbed_official | 354:e67efb2aab0e | 289 | /* Set IWDG state */ |
mbed_official | 354:e67efb2aab0e | 290 | hiwdg->State = HAL_IWDG_STATE_TIMEOUT; |
mbed_official | 354:e67efb2aab0e | 291 | |
mbed_official | 354:e67efb2aab0e | 292 | /* Process unlocked */ |
mbed_official | 354:e67efb2aab0e | 293 | __HAL_UNLOCK(hiwdg); |
mbed_official | 354:e67efb2aab0e | 294 | |
mbed_official | 354:e67efb2aab0e | 295 | return HAL_TIMEOUT; |
mbed_official | 354:e67efb2aab0e | 296 | } |
mbed_official | 354:e67efb2aab0e | 297 | } |
mbed_official | 354:e67efb2aab0e | 298 | |
mbed_official | 354:e67efb2aab0e | 299 | /* Reload IWDG counter with value defined in the reload register */ |
mbed_official | 354:e67efb2aab0e | 300 | __HAL_IWDG_RELOAD_COUNTER(hiwdg); |
mbed_official | 354:e67efb2aab0e | 301 | |
mbed_official | 354:e67efb2aab0e | 302 | /* Change IWDG peripheral state */ |
mbed_official | 354:e67efb2aab0e | 303 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 354:e67efb2aab0e | 304 | |
mbed_official | 354:e67efb2aab0e | 305 | /* Process Unlocked */ |
mbed_official | 354:e67efb2aab0e | 306 | __HAL_UNLOCK(hiwdg); |
mbed_official | 354:e67efb2aab0e | 307 | |
mbed_official | 354:e67efb2aab0e | 308 | /* Return function status */ |
mbed_official | 354:e67efb2aab0e | 309 | return HAL_OK; |
mbed_official | 354:e67efb2aab0e | 310 | } |
mbed_official | 354:e67efb2aab0e | 311 | |
mbed_official | 354:e67efb2aab0e | 312 | /** |
mbed_official | 354:e67efb2aab0e | 313 | * @} |
mbed_official | 354:e67efb2aab0e | 314 | */ |
mbed_official | 354:e67efb2aab0e | 315 | |
mbed_official | 354:e67efb2aab0e | 316 | /** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions |
mbed_official | 354:e67efb2aab0e | 317 | * @brief Peripheral State functions. |
mbed_official | 354:e67efb2aab0e | 318 | * |
mbed_official | 354:e67efb2aab0e | 319 | @verbatim |
mbed_official | 354:e67efb2aab0e | 320 | =============================================================================== |
mbed_official | 354:e67efb2aab0e | 321 | ##### Peripheral State functions ##### |
mbed_official | 354:e67efb2aab0e | 322 | =============================================================================== |
mbed_official | 354:e67efb2aab0e | 323 | [..] |
mbed_official | 354:e67efb2aab0e | 324 | This subsection permits to get in run-time the status of the peripheral |
mbed_official | 354:e67efb2aab0e | 325 | and the data flow. |
mbed_official | 354:e67efb2aab0e | 326 | |
mbed_official | 354:e67efb2aab0e | 327 | @endverbatim |
mbed_official | 354:e67efb2aab0e | 328 | * @{ |
mbed_official | 354:e67efb2aab0e | 329 | */ |
mbed_official | 354:e67efb2aab0e | 330 | |
mbed_official | 354:e67efb2aab0e | 331 | /** |
mbed_official | 354:e67efb2aab0e | 332 | * @brief Returns the IWDG state. |
mbed_official | 354:e67efb2aab0e | 333 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 354:e67efb2aab0e | 334 | * the configuration information for the specified IWDG module. |
mbed_official | 354:e67efb2aab0e | 335 | * @retval HAL state |
mbed_official | 354:e67efb2aab0e | 336 | */ |
mbed_official | 354:e67efb2aab0e | 337 | HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 354:e67efb2aab0e | 338 | { |
mbed_official | 354:e67efb2aab0e | 339 | return hiwdg->State; |
mbed_official | 354:e67efb2aab0e | 340 | } |
mbed_official | 354:e67efb2aab0e | 341 | |
mbed_official | 354:e67efb2aab0e | 342 | /** |
mbed_official | 354:e67efb2aab0e | 343 | * @} |
mbed_official | 354:e67efb2aab0e | 344 | */ |
mbed_official | 354:e67efb2aab0e | 345 | |
mbed_official | 354:e67efb2aab0e | 346 | /** |
mbed_official | 354:e67efb2aab0e | 347 | * @} |
mbed_official | 354:e67efb2aab0e | 348 | */ |
mbed_official | 354:e67efb2aab0e | 349 | |
mbed_official | 354:e67efb2aab0e | 350 | #endif /* HAL_IWDG_MODULE_ENABLED */ |
mbed_official | 354:e67efb2aab0e | 351 | /** |
mbed_official | 354:e67efb2aab0e | 352 | * @} |
mbed_official | 354:e67efb2aab0e | 353 | */ |
mbed_official | 354:e67efb2aab0e | 354 | |
mbed_official | 354:e67efb2aab0e | 355 | /** |
mbed_official | 354:e67efb2aab0e | 356 | * @} |
mbed_official | 354:e67efb2aab0e | 357 | */ |
mbed_official | 354:e67efb2aab0e | 358 | |
mbed_official | 354:e67efb2aab0e | 359 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
mbed_official | 354:e67efb2aab0e | 360 |