mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_STM32F407VG/stm32f4xx_hal_iwdg.c@323:9e901b0a5aa1, 2014-09-13 (annotated)
- Committer:
- shaoziyang
- Date:
- Sat Sep 13 14:25:46 2014 +0000
- Revision:
- 323:9e901b0a5aa1
- Parent:
- 296:ec1b66a3d094
test with CLOCK_SETUP = 0
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 133:d4dda5c437f0 | 1 | /** |
mbed_official | 133:d4dda5c437f0 | 2 | ****************************************************************************** |
mbed_official | 133:d4dda5c437f0 | 3 | * @file stm32f4xx_hal_iwdg.c |
mbed_official | 133:d4dda5c437f0 | 4 | * @author MCD Application Team |
mbed_official | 242:7074e42da0b2 | 5 | * @version V1.1.0RC2 |
mbed_official | 242:7074e42da0b2 | 6 | * @date 14-May-2014 |
mbed_official | 133:d4dda5c437f0 | 7 | * @brief IWDG HAL module driver. |
mbed_official | 133:d4dda5c437f0 | 8 | * This file provides firmware functions to manage the following |
mbed_official | 133:d4dda5c437f0 | 9 | * functionalities of the Independent Watchdog (IWDG) peripheral: |
mbed_official | 133:d4dda5c437f0 | 10 | * + Initialization and de-initialization functions |
mbed_official | 133:d4dda5c437f0 | 11 | * + IO operation functions |
mbed_official | 133:d4dda5c437f0 | 12 | * + Peripheral State functions |
mbed_official | 133:d4dda5c437f0 | 13 | * |
mbed_official | 133:d4dda5c437f0 | 14 | @verbatim |
mbed_official | 133:d4dda5c437f0 | 15 | ============================================================================== |
mbed_official | 133:d4dda5c437f0 | 16 | ##### IWDG Generic features ##### |
mbed_official | 133:d4dda5c437f0 | 17 | ============================================================================== |
mbed_official | 133:d4dda5c437f0 | 18 | [..] |
mbed_official | 133:d4dda5c437f0 | 19 | (+) The IWDG can be started by either software or hardware (configurable |
mbed_official | 133:d4dda5c437f0 | 20 | through option byte). |
mbed_official | 133:d4dda5c437f0 | 21 | |
mbed_official | 133:d4dda5c437f0 | 22 | (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and |
mbed_official | 133:d4dda5c437f0 | 23 | thus stays active even if the main clock fails. |
mbed_official | 133:d4dda5c437f0 | 24 | Once the IWDG is started, the LSI is forced ON and cannot be disabled |
mbed_official | 133:d4dda5c437f0 | 25 | (LSI cannot be disabled too), and the counter starts counting down from |
mbed_official | 133:d4dda5c437f0 | 26 | the reset value of 0xFFF. When it reaches the end of count value (0x000) |
mbed_official | 133:d4dda5c437f0 | 27 | a system reset is generated. |
mbed_official | 133:d4dda5c437f0 | 28 | |
mbed_official | 133:d4dda5c437f0 | 29 | (+) The IWDG counter should be refreshed at regular intervals, otherwise the |
mbed_official | 133:d4dda5c437f0 | 30 | watchdog generates an MCU reset when the counter reaches 0. |
mbed_official | 133:d4dda5c437f0 | 31 | |
mbed_official | 133:d4dda5c437f0 | 32 | (+) The IWDG is implemented in the VDD voltage domain that is still functional |
mbed_official | 133:d4dda5c437f0 | 33 | in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY). |
mbed_official | 133:d4dda5c437f0 | 34 | IWDGRST flag in RCC_CSR register can be used to inform when an IWDG |
mbed_official | 133:d4dda5c437f0 | 35 | reset occurs. |
mbed_official | 133:d4dda5c437f0 | 36 | |
mbed_official | 133:d4dda5c437f0 | 37 | (+) Min-max timeout value @32KHz (LSI): ~125us / ~32.7s |
mbed_official | 133:d4dda5c437f0 | 38 | The IWDG timeout may vary due to LSI frequency dispersion. STM32F4xx |
mbed_official | 133:d4dda5c437f0 | 39 | devices provide the capability to measure the LSI frequency (LSI clock |
mbed_official | 133:d4dda5c437f0 | 40 | connected internally to TIM5 CH4 input capture). The measured value |
mbed_official | 133:d4dda5c437f0 | 41 | can be used to have an IWDG timeout with an acceptable accuracy. |
mbed_official | 133:d4dda5c437f0 | 42 | |
mbed_official | 133:d4dda5c437f0 | 43 | |
mbed_official | 133:d4dda5c437f0 | 44 | ##### How to use this driver ##### |
mbed_official | 133:d4dda5c437f0 | 45 | ============================================================================== |
mbed_official | 133:d4dda5c437f0 | 46 | [..] |
mbed_official | 133:d4dda5c437f0 | 47 | (+) Use IWDG using HAL_IWDG_Start() function to: |
mbed_official | 133:d4dda5c437f0 | 48 | (++) Enable write access to IWDG_PR and IWDG_RLR registers. |
mbed_official | 133:d4dda5c437f0 | 49 | (++) Configure the IWDG prescaler and counter reload values. |
mbed_official | 133:d4dda5c437f0 | 50 | (++) Reload IWDG counter with value defined in the IWDG_RLR register. |
mbed_official | 133:d4dda5c437f0 | 51 | (++) Start the IWDG, when the IWDG is used in software mode (no need |
mbed_official | 133:d4dda5c437f0 | 52 | to enable the LSI, it will be enabled by hardware). |
mbed_official | 133:d4dda5c437f0 | 53 | (+) Then the application program must refresh the IWDG counter at regular |
mbed_official | 133:d4dda5c437f0 | 54 | intervals during normal operation to prevent an MCU reset, using |
mbed_official | 133:d4dda5c437f0 | 55 | HAL_IWDG_Refresh() function. |
mbed_official | 133:d4dda5c437f0 | 56 | |
mbed_official | 133:d4dda5c437f0 | 57 | *** IWDG HAL driver macros list *** |
mbed_official | 133:d4dda5c437f0 | 58 | ==================================== |
mbed_official | 133:d4dda5c437f0 | 59 | [..] |
mbed_official | 133:d4dda5c437f0 | 60 | Below the list of most used macros in IWDG HAL driver. |
mbed_official | 133:d4dda5c437f0 | 61 | |
mbed_official | 133:d4dda5c437f0 | 62 | (+) __HAL_IWDG_START: Enable the IWDG peripheral |
mbed_official | 133:d4dda5c437f0 | 63 | (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register |
mbed_official | 133:d4dda5c437f0 | 64 | (+) __HAL_IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers |
mbed_official | 133:d4dda5c437f0 | 65 | (+) __HAL_IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers |
mbed_official | 133:d4dda5c437f0 | 66 | (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status |
mbed_official | 133:d4dda5c437f0 | 67 | (+) __HAL_IWDG_CLEAR_FLAG: Clear the IWDG's pending flags |
mbed_official | 133:d4dda5c437f0 | 68 | |
mbed_official | 133:d4dda5c437f0 | 69 | @endverbatim |
mbed_official | 133:d4dda5c437f0 | 70 | ****************************************************************************** |
mbed_official | 133:d4dda5c437f0 | 71 | * @attention |
mbed_official | 133:d4dda5c437f0 | 72 | * |
mbed_official | 133:d4dda5c437f0 | 73 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
mbed_official | 133:d4dda5c437f0 | 74 | * |
mbed_official | 133:d4dda5c437f0 | 75 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 133:d4dda5c437f0 | 76 | * are permitted provided that the following conditions are met: |
mbed_official | 133:d4dda5c437f0 | 77 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 133:d4dda5c437f0 | 78 | * this list of conditions and the following disclaimer. |
mbed_official | 133:d4dda5c437f0 | 79 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 133:d4dda5c437f0 | 80 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 133:d4dda5c437f0 | 81 | * and/or other materials provided with the distribution. |
mbed_official | 133:d4dda5c437f0 | 82 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 133:d4dda5c437f0 | 83 | * may be used to endorse or promote products derived from this software |
mbed_official | 133:d4dda5c437f0 | 84 | * without specific prior written permission. |
mbed_official | 133:d4dda5c437f0 | 85 | * |
mbed_official | 133:d4dda5c437f0 | 86 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 133:d4dda5c437f0 | 87 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 133:d4dda5c437f0 | 88 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 133:d4dda5c437f0 | 89 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 133:d4dda5c437f0 | 90 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 133:d4dda5c437f0 | 91 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 133:d4dda5c437f0 | 92 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 133:d4dda5c437f0 | 93 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 133:d4dda5c437f0 | 94 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 133:d4dda5c437f0 | 95 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 133:d4dda5c437f0 | 96 | * |
mbed_official | 133:d4dda5c437f0 | 97 | ****************************************************************************** |
mbed_official | 133:d4dda5c437f0 | 98 | */ |
mbed_official | 133:d4dda5c437f0 | 99 | |
mbed_official | 133:d4dda5c437f0 | 100 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 133:d4dda5c437f0 | 101 | #include "stm32f4xx_hal.h" |
mbed_official | 133:d4dda5c437f0 | 102 | |
mbed_official | 133:d4dda5c437f0 | 103 | /** @addtogroup STM32F4xx_HAL_Driver |
mbed_official | 133:d4dda5c437f0 | 104 | * @{ |
mbed_official | 133:d4dda5c437f0 | 105 | */ |
mbed_official | 133:d4dda5c437f0 | 106 | |
mbed_official | 133:d4dda5c437f0 | 107 | /** @defgroup IWDG |
mbed_official | 133:d4dda5c437f0 | 108 | * @brief IWDG HAL module driver. |
mbed_official | 133:d4dda5c437f0 | 109 | * @{ |
mbed_official | 133:d4dda5c437f0 | 110 | */ |
mbed_official | 133:d4dda5c437f0 | 111 | |
mbed_official | 133:d4dda5c437f0 | 112 | #ifdef HAL_IWDG_MODULE_ENABLED |
mbed_official | 133:d4dda5c437f0 | 113 | |
mbed_official | 133:d4dda5c437f0 | 114 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 133:d4dda5c437f0 | 115 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 133:d4dda5c437f0 | 116 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 133:d4dda5c437f0 | 117 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 133:d4dda5c437f0 | 118 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 133:d4dda5c437f0 | 119 | /* Private functions ---------------------------------------------------------*/ |
mbed_official | 133:d4dda5c437f0 | 120 | |
mbed_official | 133:d4dda5c437f0 | 121 | /** @defgroup IWDG_Private_Functions |
mbed_official | 133:d4dda5c437f0 | 122 | * @{ |
mbed_official | 133:d4dda5c437f0 | 123 | */ |
mbed_official | 133:d4dda5c437f0 | 124 | |
mbed_official | 133:d4dda5c437f0 | 125 | /** @defgroup IWDG_Group1 Initialization and de-initialization functions |
mbed_official | 133:d4dda5c437f0 | 126 | * @brief Initialization and Configuration functions. |
mbed_official | 133:d4dda5c437f0 | 127 | * |
mbed_official | 133:d4dda5c437f0 | 128 | @verbatim |
mbed_official | 133:d4dda5c437f0 | 129 | =============================================================================== |
mbed_official | 133:d4dda5c437f0 | 130 | ##### Initialization and de-initialization functions ##### |
mbed_official | 133:d4dda5c437f0 | 131 | =============================================================================== |
mbed_official | 133:d4dda5c437f0 | 132 | [..] This section provides functions allowing to: |
mbed_official | 133:d4dda5c437f0 | 133 | (+) Initialize the IWDG according to the specified parameters |
mbed_official | 133:d4dda5c437f0 | 134 | in the IWDG_InitTypeDef and create the associated handle |
mbed_official | 133:d4dda5c437f0 | 135 | (+) Initialize the IWDG MSP |
mbed_official | 133:d4dda5c437f0 | 136 | (+) DeInitialize IWDG MSP |
mbed_official | 133:d4dda5c437f0 | 137 | |
mbed_official | 133:d4dda5c437f0 | 138 | @endverbatim |
mbed_official | 133:d4dda5c437f0 | 139 | * @{ |
mbed_official | 133:d4dda5c437f0 | 140 | */ |
mbed_official | 133:d4dda5c437f0 | 141 | |
mbed_official | 133:d4dda5c437f0 | 142 | /** |
mbed_official | 133:d4dda5c437f0 | 143 | * @brief Initializes the IWDG according to the specified |
mbed_official | 133:d4dda5c437f0 | 144 | * parameters in the IWDG_InitTypeDef and creates the associated handle. |
mbed_official | 242:7074e42da0b2 | 145 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 242:7074e42da0b2 | 146 | * the configuration information for the specified IWDG module. |
mbed_official | 133:d4dda5c437f0 | 147 | * @retval HAL status |
mbed_official | 133:d4dda5c437f0 | 148 | */ |
mbed_official | 133:d4dda5c437f0 | 149 | HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 133:d4dda5c437f0 | 150 | { |
mbed_official | 133:d4dda5c437f0 | 151 | uint32_t tmp; |
mbed_official | 133:d4dda5c437f0 | 152 | |
mbed_official | 133:d4dda5c437f0 | 153 | /* Check the IWDG handle allocation */ |
mbed_official | 133:d4dda5c437f0 | 154 | if(hiwdg == NULL) |
mbed_official | 133:d4dda5c437f0 | 155 | { |
mbed_official | 133:d4dda5c437f0 | 156 | return HAL_ERROR; |
mbed_official | 133:d4dda5c437f0 | 157 | } |
mbed_official | 133:d4dda5c437f0 | 158 | |
mbed_official | 133:d4dda5c437f0 | 159 | /* Check the parameters */ |
mbed_official | 133:d4dda5c437f0 | 160 | assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler)); |
mbed_official | 133:d4dda5c437f0 | 161 | assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload)); |
mbed_official | 133:d4dda5c437f0 | 162 | |
mbed_official | 133:d4dda5c437f0 | 163 | if(hiwdg->State == HAL_IWDG_STATE_RESET) |
mbed_official | 133:d4dda5c437f0 | 164 | { |
mbed_official | 133:d4dda5c437f0 | 165 | /* Init the low level hardware */ |
mbed_official | 133:d4dda5c437f0 | 166 | HAL_IWDG_MspInit(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 167 | } |
mbed_official | 133:d4dda5c437f0 | 168 | |
mbed_official | 133:d4dda5c437f0 | 169 | /* Change IWDG peripheral state */ |
mbed_official | 133:d4dda5c437f0 | 170 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 133:d4dda5c437f0 | 171 | |
mbed_official | 133:d4dda5c437f0 | 172 | /* Set IWDG counter clock prescaler */ |
mbed_official | 133:d4dda5c437f0 | 173 | /* Get the PR register value */ |
mbed_official | 133:d4dda5c437f0 | 174 | tmp = hiwdg->Instance->PR; |
mbed_official | 133:d4dda5c437f0 | 175 | |
mbed_official | 133:d4dda5c437f0 | 176 | /* Clear PR[2:0] bits */ |
mbed_official | 133:d4dda5c437f0 | 177 | tmp &= ((uint32_t)~(IWDG_PR_PR)); |
mbed_official | 133:d4dda5c437f0 | 178 | |
mbed_official | 133:d4dda5c437f0 | 179 | /* Prepare the IWDG Prescaler parameter */ |
mbed_official | 133:d4dda5c437f0 | 180 | tmp |= hiwdg->Init.Prescaler; |
mbed_official | 133:d4dda5c437f0 | 181 | |
mbed_official | 133:d4dda5c437f0 | 182 | /* Enable write access to IWDG_PR and IWDG_RLR registers */ |
mbed_official | 133:d4dda5c437f0 | 183 | __HAL_IWDG_ENABLE_WRITE_ACCESS(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 184 | |
mbed_official | 133:d4dda5c437f0 | 185 | /* Write to IWDG PR */ |
mbed_official | 133:d4dda5c437f0 | 186 | hiwdg->Instance->PR = tmp; |
mbed_official | 133:d4dda5c437f0 | 187 | |
mbed_official | 133:d4dda5c437f0 | 188 | /* Set IWDG counter reload value */ |
mbed_official | 133:d4dda5c437f0 | 189 | /* Get the RLR register value */ |
mbed_official | 133:d4dda5c437f0 | 190 | tmp = hiwdg->Instance->RLR; |
mbed_official | 133:d4dda5c437f0 | 191 | |
mbed_official | 133:d4dda5c437f0 | 192 | /* Clear RL[11:0] bits */ |
mbed_official | 133:d4dda5c437f0 | 193 | tmp &= ((uint32_t)~(IWDG_RLR_RL)); |
mbed_official | 133:d4dda5c437f0 | 194 | |
mbed_official | 133:d4dda5c437f0 | 195 | /* Prepare the IWDG Prescaler parameter */ |
mbed_official | 133:d4dda5c437f0 | 196 | tmp |= hiwdg->Init.Reload; |
mbed_official | 133:d4dda5c437f0 | 197 | |
mbed_official | 133:d4dda5c437f0 | 198 | /* Write to IWDG RLR */ |
mbed_official | 133:d4dda5c437f0 | 199 | hiwdg->Instance->RLR = tmp; |
mbed_official | 133:d4dda5c437f0 | 200 | |
mbed_official | 133:d4dda5c437f0 | 201 | /* Change IWDG peripheral state */ |
mbed_official | 133:d4dda5c437f0 | 202 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 133:d4dda5c437f0 | 203 | |
mbed_official | 133:d4dda5c437f0 | 204 | /* Return function status */ |
mbed_official | 133:d4dda5c437f0 | 205 | return HAL_OK; |
mbed_official | 133:d4dda5c437f0 | 206 | } |
mbed_official | 133:d4dda5c437f0 | 207 | |
mbed_official | 133:d4dda5c437f0 | 208 | /** |
mbed_official | 133:d4dda5c437f0 | 209 | * @brief Initializes the IWDG MSP. |
mbed_official | 242:7074e42da0b2 | 210 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 242:7074e42da0b2 | 211 | * the configuration information for the specified IWDG module. |
mbed_official | 133:d4dda5c437f0 | 212 | * @retval None |
mbed_official | 133:d4dda5c437f0 | 213 | */ |
mbed_official | 133:d4dda5c437f0 | 214 | __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 133:d4dda5c437f0 | 215 | { |
mbed_official | 133:d4dda5c437f0 | 216 | /* NOTE : This function Should not be modified, when the callback is needed, |
mbed_official | 133:d4dda5c437f0 | 217 | the HAL_IWDG_MspInit could be implemented in the user file |
mbed_official | 133:d4dda5c437f0 | 218 | */ |
mbed_official | 133:d4dda5c437f0 | 219 | } |
mbed_official | 133:d4dda5c437f0 | 220 | |
mbed_official | 133:d4dda5c437f0 | 221 | /** |
mbed_official | 133:d4dda5c437f0 | 222 | * @} |
mbed_official | 133:d4dda5c437f0 | 223 | */ |
mbed_official | 133:d4dda5c437f0 | 224 | |
mbed_official | 133:d4dda5c437f0 | 225 | /** @defgroup IWDG_Group2 IO operation functions |
mbed_official | 133:d4dda5c437f0 | 226 | * @brief IO operation functions |
mbed_official | 133:d4dda5c437f0 | 227 | * |
mbed_official | 133:d4dda5c437f0 | 228 | @verbatim |
mbed_official | 133:d4dda5c437f0 | 229 | =============================================================================== |
mbed_official | 133:d4dda5c437f0 | 230 | ##### IO operation functions ##### |
mbed_official | 133:d4dda5c437f0 | 231 | =============================================================================== |
mbed_official | 133:d4dda5c437f0 | 232 | [..] This section provides functions allowing to: |
mbed_official | 133:d4dda5c437f0 | 233 | (+) Start the IWDG. |
mbed_official | 133:d4dda5c437f0 | 234 | (+) Refresh the IWDG. |
mbed_official | 133:d4dda5c437f0 | 235 | |
mbed_official | 133:d4dda5c437f0 | 236 | @endverbatim |
mbed_official | 133:d4dda5c437f0 | 237 | * @{ |
mbed_official | 133:d4dda5c437f0 | 238 | */ |
mbed_official | 133:d4dda5c437f0 | 239 | |
mbed_official | 133:d4dda5c437f0 | 240 | /** |
mbed_official | 133:d4dda5c437f0 | 241 | * @brief Starts the IWDG. |
mbed_official | 242:7074e42da0b2 | 242 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 242:7074e42da0b2 | 243 | * the configuration information for the specified IWDG module. |
mbed_official | 133:d4dda5c437f0 | 244 | * @retval HAL status |
mbed_official | 133:d4dda5c437f0 | 245 | */ |
mbed_official | 133:d4dda5c437f0 | 246 | HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 133:d4dda5c437f0 | 247 | { |
mbed_official | 133:d4dda5c437f0 | 248 | /* Process Locked */ |
mbed_official | 133:d4dda5c437f0 | 249 | __HAL_LOCK(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 250 | |
mbed_official | 133:d4dda5c437f0 | 251 | /* Change IWDG peripheral state */ |
mbed_official | 133:d4dda5c437f0 | 252 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 133:d4dda5c437f0 | 253 | |
mbed_official | 133:d4dda5c437f0 | 254 | /* Start the IWDG peripheral */ |
mbed_official | 133:d4dda5c437f0 | 255 | __HAL_IWDG_START(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 256 | |
mbed_official | 133:d4dda5c437f0 | 257 | /* Reload IWDG counter with value defined in the RLR register */ |
mbed_official | 133:d4dda5c437f0 | 258 | __HAL_IWDG_RELOAD_COUNTER(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 259 | |
mbed_official | 133:d4dda5c437f0 | 260 | /* Change IWDG peripheral state */ |
mbed_official | 133:d4dda5c437f0 | 261 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 133:d4dda5c437f0 | 262 | |
mbed_official | 133:d4dda5c437f0 | 263 | /* Process Unlocked */ |
mbed_official | 133:d4dda5c437f0 | 264 | __HAL_UNLOCK(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 265 | |
mbed_official | 133:d4dda5c437f0 | 266 | /* Return function status */ |
mbed_official | 133:d4dda5c437f0 | 267 | return HAL_OK; |
mbed_official | 133:d4dda5c437f0 | 268 | } |
mbed_official | 133:d4dda5c437f0 | 269 | |
mbed_official | 133:d4dda5c437f0 | 270 | /** |
mbed_official | 133:d4dda5c437f0 | 271 | * @brief Refreshes the IWDG. |
mbed_official | 242:7074e42da0b2 | 272 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 242:7074e42da0b2 | 273 | * the configuration information for the specified IWDG module. |
mbed_official | 133:d4dda5c437f0 | 274 | * @retval HAL status |
mbed_official | 133:d4dda5c437f0 | 275 | */ |
mbed_official | 133:d4dda5c437f0 | 276 | HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 133:d4dda5c437f0 | 277 | { |
mbed_official | 133:d4dda5c437f0 | 278 | /* Process Locked */ |
mbed_official | 133:d4dda5c437f0 | 279 | __HAL_LOCK(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 280 | |
mbed_official | 133:d4dda5c437f0 | 281 | /* Change IWDG peripheral state */ |
mbed_official | 133:d4dda5c437f0 | 282 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 133:d4dda5c437f0 | 283 | |
mbed_official | 133:d4dda5c437f0 | 284 | /* Clear the RVU flag */ |
mbed_official | 133:d4dda5c437f0 | 285 | __HAL_IWDG_CLEAR_FLAG(hiwdg, IWDG_FLAG_RVU); |
mbed_official | 133:d4dda5c437f0 | 286 | |
mbed_official | 133:d4dda5c437f0 | 287 | /* Reload IWDG counter with value defined in the reload register */ |
mbed_official | 133:d4dda5c437f0 | 288 | __HAL_IWDG_RELOAD_COUNTER(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 289 | |
mbed_official | 133:d4dda5c437f0 | 290 | /* Change IWDG peripheral state */ |
mbed_official | 133:d4dda5c437f0 | 291 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 133:d4dda5c437f0 | 292 | |
mbed_official | 133:d4dda5c437f0 | 293 | /* Process Unlocked */ |
mbed_official | 133:d4dda5c437f0 | 294 | __HAL_UNLOCK(hiwdg); |
mbed_official | 133:d4dda5c437f0 | 295 | |
mbed_official | 133:d4dda5c437f0 | 296 | /* Return function status */ |
mbed_official | 133:d4dda5c437f0 | 297 | return HAL_OK; |
mbed_official | 133:d4dda5c437f0 | 298 | } |
mbed_official | 133:d4dda5c437f0 | 299 | |
mbed_official | 133:d4dda5c437f0 | 300 | /** |
mbed_official | 133:d4dda5c437f0 | 301 | * @} |
mbed_official | 133:d4dda5c437f0 | 302 | */ |
mbed_official | 133:d4dda5c437f0 | 303 | |
mbed_official | 133:d4dda5c437f0 | 304 | /** @defgroup IWDG_Group3 Peripheral State functions |
mbed_official | 133:d4dda5c437f0 | 305 | * @brief Peripheral State functions. |
mbed_official | 133:d4dda5c437f0 | 306 | * |
mbed_official | 133:d4dda5c437f0 | 307 | @verbatim |
mbed_official | 133:d4dda5c437f0 | 308 | =============================================================================== |
mbed_official | 133:d4dda5c437f0 | 309 | ##### Peripheral State functions ##### |
mbed_official | 133:d4dda5c437f0 | 310 | =============================================================================== |
mbed_official | 133:d4dda5c437f0 | 311 | [..] |
mbed_official | 133:d4dda5c437f0 | 312 | This subsection permits to get in run-time the status of the peripheral |
mbed_official | 133:d4dda5c437f0 | 313 | and the data flow. |
mbed_official | 133:d4dda5c437f0 | 314 | |
mbed_official | 133:d4dda5c437f0 | 315 | @endverbatim |
mbed_official | 133:d4dda5c437f0 | 316 | * @{ |
mbed_official | 133:d4dda5c437f0 | 317 | */ |
mbed_official | 133:d4dda5c437f0 | 318 | |
mbed_official | 133:d4dda5c437f0 | 319 | /** |
mbed_official | 133:d4dda5c437f0 | 320 | * @brief Returns the IWDG state. |
mbed_official | 242:7074e42da0b2 | 321 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 242:7074e42da0b2 | 322 | * the configuration information for the specified IWDG module. |
mbed_official | 133:d4dda5c437f0 | 323 | * @retval HAL state |
mbed_official | 133:d4dda5c437f0 | 324 | */ |
mbed_official | 133:d4dda5c437f0 | 325 | HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 133:d4dda5c437f0 | 326 | { |
mbed_official | 133:d4dda5c437f0 | 327 | return hiwdg->State; |
mbed_official | 133:d4dda5c437f0 | 328 | } |
mbed_official | 133:d4dda5c437f0 | 329 | |
mbed_official | 133:d4dda5c437f0 | 330 | /** |
mbed_official | 133:d4dda5c437f0 | 331 | * @} |
mbed_official | 133:d4dda5c437f0 | 332 | */ |
mbed_official | 133:d4dda5c437f0 | 333 | |
mbed_official | 133:d4dda5c437f0 | 334 | /** |
mbed_official | 133:d4dda5c437f0 | 335 | * @} |
mbed_official | 133:d4dda5c437f0 | 336 | */ |
mbed_official | 133:d4dda5c437f0 | 337 | |
mbed_official | 133:d4dda5c437f0 | 338 | #endif /* HAL_IWDG_MODULE_ENABLED */ |
mbed_official | 133:d4dda5c437f0 | 339 | /** |
mbed_official | 133:d4dda5c437f0 | 340 | * @} |
mbed_official | 133:d4dda5c437f0 | 341 | */ |
mbed_official | 133:d4dda5c437f0 | 342 | |
mbed_official | 133:d4dda5c437f0 | 343 | /** |
mbed_official | 133:d4dda5c437f0 | 344 | * @} |
mbed_official | 133:d4dda5c437f0 | 345 | */ |
mbed_official | 133:d4dda5c437f0 | 346 | |
mbed_official | 133:d4dda5c437f0 | 347 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |