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targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_iwdg.c@610:813dcc80987e, 2015-08-14 (annotated)
- Committer:
- mbed_official
- Date:
- Fri Aug 14 13:15:17 2015 +0100
- Revision:
- 610:813dcc80987e
- Parent:
- 573:ad23fe03a082
Synchronized with git revision 6d84db41c6833e0b9b024741eb0616a5f62d5599
Full URL: https://github.com/mbedmicro/mbed/commit/6d84db41c6833e0b9b024741eb0616a5f62d5599/
DISCO_F746NG - Improvements
Who changed what in which revision?
User | Revision | Line number | New contents of line |
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mbed_official | 573:ad23fe03a082 | 1 | /** |
mbed_official | 573:ad23fe03a082 | 2 | ****************************************************************************** |
mbed_official | 573:ad23fe03a082 | 3 | * @file stm32f7xx_hal_iwdg.c |
mbed_official | 573:ad23fe03a082 | 4 | * @author MCD Application Team |
mbed_official | 610:813dcc80987e | 5 | * @version V1.0.1 |
mbed_official | 610:813dcc80987e | 6 | * @date 25-June-2015 |
mbed_official | 573:ad23fe03a082 | 7 | * @brief IWDG HAL module driver. |
mbed_official | 573:ad23fe03a082 | 8 | * |
mbed_official | 573:ad23fe03a082 | 9 | * This file provides firmware functions to manage the following |
mbed_official | 573:ad23fe03a082 | 10 | * functionalities of the Independent Watchdog (IWDG) peripheral: |
mbed_official | 573:ad23fe03a082 | 11 | * + Initialization and de-initialization functions |
mbed_official | 573:ad23fe03a082 | 12 | * + IO operation functions |
mbed_official | 573:ad23fe03a082 | 13 | * + Peripheral State functions |
mbed_official | 573:ad23fe03a082 | 14 | * |
mbed_official | 573:ad23fe03a082 | 15 | @verbatim |
mbed_official | 573:ad23fe03a082 | 16 | ============================================================================== |
mbed_official | 573:ad23fe03a082 | 17 | ##### IWDG Generic features ##### |
mbed_official | 573:ad23fe03a082 | 18 | ============================================================================== |
mbed_official | 573:ad23fe03a082 | 19 | [..] |
mbed_official | 573:ad23fe03a082 | 20 | (+) The IWDG can be started by either software or hardware (configurable |
mbed_official | 573:ad23fe03a082 | 21 | through option byte). |
mbed_official | 573:ad23fe03a082 | 22 | |
mbed_official | 573:ad23fe03a082 | 23 | (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and |
mbed_official | 573:ad23fe03a082 | 24 | thus stays active even if the main clock fails. |
mbed_official | 573:ad23fe03a082 | 25 | Once the IWDG is started, the LSI is forced ON and cannot be disabled |
mbed_official | 573:ad23fe03a082 | 26 | (LSI cannot be disabled too), and the counter starts counting down from |
mbed_official | 573:ad23fe03a082 | 27 | the reset value of 0xFFF. When it reaches the end of count value (0x000) |
mbed_official | 573:ad23fe03a082 | 28 | a system reset is generated. |
mbed_official | 573:ad23fe03a082 | 29 | |
mbed_official | 573:ad23fe03a082 | 30 | (+) The IWDG counter should be refreshed at regular intervals, otherwise the |
mbed_official | 573:ad23fe03a082 | 31 | watchdog generates an MCU reset when the counter reaches 0. |
mbed_official | 573:ad23fe03a082 | 32 | |
mbed_official | 573:ad23fe03a082 | 33 | (+) The IWDG is implemented in the VDD voltage domain that is still functional |
mbed_official | 573:ad23fe03a082 | 34 | in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY). |
mbed_official | 573:ad23fe03a082 | 35 | IWDGRST flag in RCC_CSR register can be used to inform when an IWDG |
mbed_official | 573:ad23fe03a082 | 36 | reset occurs. |
mbed_official | 573:ad23fe03a082 | 37 | |
mbed_official | 573:ad23fe03a082 | 38 | [..] Min-max timeout value @32KHz (LSI): ~125us / ~32.7s |
mbed_official | 573:ad23fe03a082 | 39 | The IWDG timeout may vary due to LSI frequency dispersion. STM32L4xx |
mbed_official | 573:ad23fe03a082 | 40 | devices provide the capability to measure the LSI frequency (LSI clock |
mbed_official | 573:ad23fe03a082 | 41 | connected internally to TIM16 CH1 input capture). The measured value |
mbed_official | 573:ad23fe03a082 | 42 | can be used to have an IWDG timeout with an acceptable accuracy. |
mbed_official | 573:ad23fe03a082 | 43 | |
mbed_official | 573:ad23fe03a082 | 44 | |
mbed_official | 573:ad23fe03a082 | 45 | ##### How to use this driver ##### |
mbed_official | 573:ad23fe03a082 | 46 | ============================================================================== |
mbed_official | 573:ad23fe03a082 | 47 | [..] |
mbed_official | 573:ad23fe03a082 | 48 | If Window option is disabled |
mbed_official | 573:ad23fe03a082 | 49 | |
mbed_official | 573:ad23fe03a082 | 50 | (+) Use IWDG using HAL_IWDG_Init() function to : |
mbed_official | 573:ad23fe03a082 | 51 | (++) Enable write access to IWDG_PR, IWDG_RLR. |
mbed_official | 573:ad23fe03a082 | 52 | (++) Configure the IWDG prescaler, counter reload value. |
mbed_official | 573:ad23fe03a082 | 53 | This reload value will be loaded in the IWDG counter each time the counter |
mbed_official | 573:ad23fe03a082 | 54 | is reloaded, then the IWDG will start counting down from this value. |
mbed_official | 573:ad23fe03a082 | 55 | (+) Use IWDG using HAL_IWDG_Start() function to : |
mbed_official | 573:ad23fe03a082 | 56 | (++) Reload IWDG counter with value defined in the IWDG_RLR register. |
mbed_official | 573:ad23fe03a082 | 57 | (++) Start the IWDG, when the IWDG is used in software mode (no need |
mbed_official | 573:ad23fe03a082 | 58 | to enable the LSI, it will be enabled by hardware). |
mbed_official | 573:ad23fe03a082 | 59 | (+) Then the application program must refresh the IWDG counter at regular |
mbed_official | 573:ad23fe03a082 | 60 | intervals during normal operation to prevent an MCU reset, using |
mbed_official | 573:ad23fe03a082 | 61 | HAL_IWDG_Refresh() function. |
mbed_official | 573:ad23fe03a082 | 62 | [..] |
mbed_official | 573:ad23fe03a082 | 63 | if Window option is enabled: |
mbed_official | 573:ad23fe03a082 | 64 | |
mbed_official | 573:ad23fe03a082 | 65 | (+) Use IWDG using HAL_IWDG_Start() function to enable IWDG downcounter |
mbed_official | 573:ad23fe03a082 | 66 | (+) Use IWDG using HAL_IWDG_Init() function to : |
mbed_official | 573:ad23fe03a082 | 67 | (++) Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers. |
mbed_official | 573:ad23fe03a082 | 68 | (++) Configure the IWDG prescaler, reload value and window value. |
mbed_official | 573:ad23fe03a082 | 69 | (+) Then the application program must refresh the IWDG counter at regular |
mbed_official | 573:ad23fe03a082 | 70 | intervals during normal operation to prevent an MCU reset, using |
mbed_official | 573:ad23fe03a082 | 71 | HAL_IWDG_Refresh() function. |
mbed_official | 573:ad23fe03a082 | 72 | |
mbed_official | 573:ad23fe03a082 | 73 | *** IWDG HAL driver macros list *** |
mbed_official | 573:ad23fe03a082 | 74 | ==================================== |
mbed_official | 573:ad23fe03a082 | 75 | [..] |
mbed_official | 573:ad23fe03a082 | 76 | Below the list of most used macros in IWDG HAL driver. |
mbed_official | 573:ad23fe03a082 | 77 | |
mbed_official | 573:ad23fe03a082 | 78 | (+) __HAL_IWDG_START: Enable the IWDG peripheral |
mbed_official | 573:ad23fe03a082 | 79 | (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register |
mbed_official | 573:ad23fe03a082 | 80 | (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status |
mbed_official | 573:ad23fe03a082 | 81 | (+) IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers |
mbed_official | 573:ad23fe03a082 | 82 | (+) IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers |
mbed_official | 573:ad23fe03a082 | 83 | |
mbed_official | 573:ad23fe03a082 | 84 | @endverbatim |
mbed_official | 573:ad23fe03a082 | 85 | ****************************************************************************** |
mbed_official | 573:ad23fe03a082 | 86 | * @attention |
mbed_official | 573:ad23fe03a082 | 87 | * |
mbed_official | 573:ad23fe03a082 | 88 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> |
mbed_official | 573:ad23fe03a082 | 89 | * |
mbed_official | 573:ad23fe03a082 | 90 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 573:ad23fe03a082 | 91 | * are permitted provided that the following conditions are met: |
mbed_official | 573:ad23fe03a082 | 92 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 573:ad23fe03a082 | 93 | * this list of conditions and the following disclaimer. |
mbed_official | 573:ad23fe03a082 | 94 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 573:ad23fe03a082 | 95 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 573:ad23fe03a082 | 96 | * and/or other materials provided with the distribution. |
mbed_official | 573:ad23fe03a082 | 97 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 573:ad23fe03a082 | 98 | * may be used to endorse or promote products derived from this software |
mbed_official | 573:ad23fe03a082 | 99 | * without specific prior written permission. |
mbed_official | 573:ad23fe03a082 | 100 | * |
mbed_official | 573:ad23fe03a082 | 101 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 573:ad23fe03a082 | 102 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 573:ad23fe03a082 | 103 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 573:ad23fe03a082 | 104 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 573:ad23fe03a082 | 105 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 573:ad23fe03a082 | 106 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 573:ad23fe03a082 | 107 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 573:ad23fe03a082 | 108 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 573:ad23fe03a082 | 109 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 573:ad23fe03a082 | 110 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 573:ad23fe03a082 | 111 | * |
mbed_official | 573:ad23fe03a082 | 112 | ****************************************************************************** |
mbed_official | 573:ad23fe03a082 | 113 | */ |
mbed_official | 573:ad23fe03a082 | 114 | |
mbed_official | 573:ad23fe03a082 | 115 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 573:ad23fe03a082 | 116 | #include "stm32f7xx_hal.h" |
mbed_official | 573:ad23fe03a082 | 117 | |
mbed_official | 573:ad23fe03a082 | 118 | /** @addtogroup STM32F7xx_HAL_Driver |
mbed_official | 573:ad23fe03a082 | 119 | * @{ |
mbed_official | 573:ad23fe03a082 | 120 | */ |
mbed_official | 573:ad23fe03a082 | 121 | |
mbed_official | 573:ad23fe03a082 | 122 | /** @defgroup IWDG IWDG HAL module driver |
mbed_official | 573:ad23fe03a082 | 123 | * @brief IWDG HAL module driver. |
mbed_official | 573:ad23fe03a082 | 124 | * @{ |
mbed_official | 573:ad23fe03a082 | 125 | */ |
mbed_official | 573:ad23fe03a082 | 126 | |
mbed_official | 573:ad23fe03a082 | 127 | #ifdef HAL_IWDG_MODULE_ENABLED |
mbed_official | 573:ad23fe03a082 | 128 | |
mbed_official | 573:ad23fe03a082 | 129 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 573:ad23fe03a082 | 130 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 573:ad23fe03a082 | 131 | /** @defgroup IWDG_Private_Defines IWDG Private Defines |
mbed_official | 573:ad23fe03a082 | 132 | * @{ |
mbed_official | 573:ad23fe03a082 | 133 | */ |
mbed_official | 573:ad23fe03a082 | 134 | |
mbed_official | 573:ad23fe03a082 | 135 | #define HAL_IWDG_DEFAULT_TIMEOUT (uint32_t)1000 |
mbed_official | 573:ad23fe03a082 | 136 | |
mbed_official | 573:ad23fe03a082 | 137 | /** |
mbed_official | 573:ad23fe03a082 | 138 | * @} |
mbed_official | 573:ad23fe03a082 | 139 | */ |
mbed_official | 573:ad23fe03a082 | 140 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 573:ad23fe03a082 | 141 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 573:ad23fe03a082 | 142 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 573:ad23fe03a082 | 143 | /* Exported functions --------------------------------------------------------*/ |
mbed_official | 573:ad23fe03a082 | 144 | |
mbed_official | 573:ad23fe03a082 | 145 | /** @defgroup IWDG_Exported_Functions IWDG Exported Functions |
mbed_official | 573:ad23fe03a082 | 146 | * @{ |
mbed_official | 573:ad23fe03a082 | 147 | */ |
mbed_official | 573:ad23fe03a082 | 148 | |
mbed_official | 573:ad23fe03a082 | 149 | /** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions |
mbed_official | 573:ad23fe03a082 | 150 | * @brief Initialization and Configuration functions. |
mbed_official | 573:ad23fe03a082 | 151 | * |
mbed_official | 573:ad23fe03a082 | 152 | @verbatim |
mbed_official | 573:ad23fe03a082 | 153 | =============================================================================== |
mbed_official | 573:ad23fe03a082 | 154 | ##### Initialization and de-initialization functions ##### |
mbed_official | 573:ad23fe03a082 | 155 | =============================================================================== |
mbed_official | 573:ad23fe03a082 | 156 | [..] This section provides functions allowing to: |
mbed_official | 573:ad23fe03a082 | 157 | (+) Initialize the IWDG according to the specified parameters |
mbed_official | 573:ad23fe03a082 | 158 | in the IWDG_InitTypeDef and create the associated handle |
mbed_official | 573:ad23fe03a082 | 159 | (+) Manage Window option |
mbed_official | 573:ad23fe03a082 | 160 | (+) Initialize the IWDG MSP |
mbed_official | 573:ad23fe03a082 | 161 | (+) DeInitialize IWDG MSP |
mbed_official | 573:ad23fe03a082 | 162 | |
mbed_official | 573:ad23fe03a082 | 163 | @endverbatim |
mbed_official | 573:ad23fe03a082 | 164 | * @{ |
mbed_official | 573:ad23fe03a082 | 165 | */ |
mbed_official | 573:ad23fe03a082 | 166 | |
mbed_official | 573:ad23fe03a082 | 167 | /** |
mbed_official | 573:ad23fe03a082 | 168 | * @brief Initializes the IWDG according to the specified |
mbed_official | 573:ad23fe03a082 | 169 | * parameters in the IWDG_InitTypeDef and creates the associated handle. |
mbed_official | 573:ad23fe03a082 | 170 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 573:ad23fe03a082 | 171 | * the configuration information for the specified IWDG module. |
mbed_official | 573:ad23fe03a082 | 172 | * @retval HAL status |
mbed_official | 573:ad23fe03a082 | 173 | */ |
mbed_official | 573:ad23fe03a082 | 174 | HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 573:ad23fe03a082 | 175 | { |
mbed_official | 573:ad23fe03a082 | 176 | uint32_t tickstart = 0; |
mbed_official | 573:ad23fe03a082 | 177 | |
mbed_official | 573:ad23fe03a082 | 178 | /* Check the IWDG handle allocation */ |
mbed_official | 573:ad23fe03a082 | 179 | if(hiwdg == NULL) |
mbed_official | 573:ad23fe03a082 | 180 | { |
mbed_official | 573:ad23fe03a082 | 181 | return HAL_ERROR; |
mbed_official | 573:ad23fe03a082 | 182 | } |
mbed_official | 573:ad23fe03a082 | 183 | |
mbed_official | 573:ad23fe03a082 | 184 | /* Check the parameters */ |
mbed_official | 573:ad23fe03a082 | 185 | assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler)); |
mbed_official | 573:ad23fe03a082 | 186 | assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload)); |
mbed_official | 573:ad23fe03a082 | 187 | assert_param(IS_IWDG_WINDOW(hiwdg->Init.Window)); |
mbed_official | 573:ad23fe03a082 | 188 | |
mbed_official | 573:ad23fe03a082 | 189 | /* Check pending flag, if previous update not done, return error */ |
mbed_official | 573:ad23fe03a082 | 190 | if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET) |
mbed_official | 573:ad23fe03a082 | 191 | &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET) |
mbed_official | 573:ad23fe03a082 | 192 | &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_WVU) != RESET)) |
mbed_official | 573:ad23fe03a082 | 193 | { |
mbed_official | 573:ad23fe03a082 | 194 | return HAL_ERROR; |
mbed_official | 573:ad23fe03a082 | 195 | } |
mbed_official | 573:ad23fe03a082 | 196 | |
mbed_official | 573:ad23fe03a082 | 197 | if(hiwdg->State == HAL_IWDG_STATE_RESET) |
mbed_official | 573:ad23fe03a082 | 198 | { |
mbed_official | 573:ad23fe03a082 | 199 | /* Allocate lock resource and initialize it */ |
mbed_official | 573:ad23fe03a082 | 200 | hiwdg->Lock = HAL_UNLOCKED; |
mbed_official | 573:ad23fe03a082 | 201 | |
mbed_official | 573:ad23fe03a082 | 202 | /* Init the low level hardware */ |
mbed_official | 573:ad23fe03a082 | 203 | HAL_IWDG_MspInit(hiwdg); |
mbed_official | 573:ad23fe03a082 | 204 | } |
mbed_official | 573:ad23fe03a082 | 205 | |
mbed_official | 573:ad23fe03a082 | 206 | /* Change IWDG peripheral state */ |
mbed_official | 573:ad23fe03a082 | 207 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 573:ad23fe03a082 | 208 | |
mbed_official | 573:ad23fe03a082 | 209 | /* Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers */ |
mbed_official | 573:ad23fe03a082 | 210 | /* by writing 0x5555 in KR */ |
mbed_official | 573:ad23fe03a082 | 211 | IWDG_ENABLE_WRITE_ACCESS(hiwdg); |
mbed_official | 573:ad23fe03a082 | 212 | |
mbed_official | 573:ad23fe03a082 | 213 | /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */ |
mbed_official | 573:ad23fe03a082 | 214 | MODIFY_REG(hiwdg->Instance->PR, (uint32_t)IWDG_PR_PR, hiwdg->Init.Prescaler); |
mbed_official | 573:ad23fe03a082 | 215 | MODIFY_REG(hiwdg->Instance->RLR, (uint32_t)IWDG_RLR_RL, hiwdg->Init.Reload); |
mbed_official | 573:ad23fe03a082 | 216 | |
mbed_official | 573:ad23fe03a082 | 217 | /* check if window option is enabled */ |
mbed_official | 573:ad23fe03a082 | 218 | if (((hiwdg->Init.Window) != IWDG_WINDOW_DISABLE) || ((hiwdg->Instance->WINR) != IWDG_WINDOW_DISABLE)) |
mbed_official | 573:ad23fe03a082 | 219 | { |
mbed_official | 573:ad23fe03a082 | 220 | tickstart = HAL_GetTick(); |
mbed_official | 573:ad23fe03a082 | 221 | |
mbed_official | 573:ad23fe03a082 | 222 | /* Wait for register to be updated */ |
mbed_official | 573:ad23fe03a082 | 223 | while((uint32_t)(hiwdg->Instance->SR) != RESET) |
mbed_official | 573:ad23fe03a082 | 224 | { |
mbed_official | 573:ad23fe03a082 | 225 | if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT) |
mbed_official | 573:ad23fe03a082 | 226 | { |
mbed_official | 573:ad23fe03a082 | 227 | /* Set IWDG state */ |
mbed_official | 573:ad23fe03a082 | 228 | hiwdg->State = HAL_IWDG_STATE_TIMEOUT; |
mbed_official | 573:ad23fe03a082 | 229 | return HAL_TIMEOUT; |
mbed_official | 573:ad23fe03a082 | 230 | } |
mbed_official | 573:ad23fe03a082 | 231 | } |
mbed_official | 573:ad23fe03a082 | 232 | |
mbed_official | 573:ad23fe03a082 | 233 | /* Write to IWDG WINR the IWDG_Window value to compare with */ |
mbed_official | 573:ad23fe03a082 | 234 | MODIFY_REG(hiwdg->Instance->WINR, (uint32_t)IWDG_WINR_WIN, hiwdg->Init.Window); |
mbed_official | 573:ad23fe03a082 | 235 | } |
mbed_official | 573:ad23fe03a082 | 236 | |
mbed_official | 573:ad23fe03a082 | 237 | /* Change IWDG peripheral state */ |
mbed_official | 573:ad23fe03a082 | 238 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 573:ad23fe03a082 | 239 | |
mbed_official | 573:ad23fe03a082 | 240 | /* Return function status */ |
mbed_official | 573:ad23fe03a082 | 241 | return HAL_OK; |
mbed_official | 573:ad23fe03a082 | 242 | } |
mbed_official | 573:ad23fe03a082 | 243 | |
mbed_official | 573:ad23fe03a082 | 244 | /** |
mbed_official | 573:ad23fe03a082 | 245 | * @brief Initializes the IWDG MSP. |
mbed_official | 573:ad23fe03a082 | 246 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 573:ad23fe03a082 | 247 | * the configuration information for the specified IWDG module. |
mbed_official | 573:ad23fe03a082 | 248 | * @retval None |
mbed_official | 573:ad23fe03a082 | 249 | */ |
mbed_official | 573:ad23fe03a082 | 250 | __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 573:ad23fe03a082 | 251 | { |
mbed_official | 573:ad23fe03a082 | 252 | /* NOTE : This function should not be modified, when the callback is needed, |
mbed_official | 573:ad23fe03a082 | 253 | the HAL_IWDG_MspInit could be implemented in the user file |
mbed_official | 573:ad23fe03a082 | 254 | */ |
mbed_official | 573:ad23fe03a082 | 255 | } |
mbed_official | 573:ad23fe03a082 | 256 | |
mbed_official | 573:ad23fe03a082 | 257 | /** |
mbed_official | 573:ad23fe03a082 | 258 | * @} |
mbed_official | 573:ad23fe03a082 | 259 | */ |
mbed_official | 573:ad23fe03a082 | 260 | |
mbed_official | 573:ad23fe03a082 | 261 | /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions |
mbed_official | 573:ad23fe03a082 | 262 | * @brief IO operation functions |
mbed_official | 573:ad23fe03a082 | 263 | * |
mbed_official | 573:ad23fe03a082 | 264 | @verbatim |
mbed_official | 573:ad23fe03a082 | 265 | =============================================================================== |
mbed_official | 573:ad23fe03a082 | 266 | ##### IO operation functions ##### |
mbed_official | 573:ad23fe03a082 | 267 | =============================================================================== |
mbed_official | 573:ad23fe03a082 | 268 | [..] This section provides functions allowing to: |
mbed_official | 573:ad23fe03a082 | 269 | (+) Start the IWDG. |
mbed_official | 573:ad23fe03a082 | 270 | (+) Refresh the IWDG. |
mbed_official | 573:ad23fe03a082 | 271 | |
mbed_official | 573:ad23fe03a082 | 272 | @endverbatim |
mbed_official | 573:ad23fe03a082 | 273 | * @{ |
mbed_official | 573:ad23fe03a082 | 274 | */ |
mbed_official | 573:ad23fe03a082 | 275 | |
mbed_official | 573:ad23fe03a082 | 276 | /** |
mbed_official | 573:ad23fe03a082 | 277 | * @brief Starts the IWDG. |
mbed_official | 573:ad23fe03a082 | 278 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 573:ad23fe03a082 | 279 | * the configuration information for the specified IWDG module. |
mbed_official | 573:ad23fe03a082 | 280 | * @retval HAL status |
mbed_official | 573:ad23fe03a082 | 281 | */ |
mbed_official | 573:ad23fe03a082 | 282 | HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 573:ad23fe03a082 | 283 | { |
mbed_official | 573:ad23fe03a082 | 284 | uint32_t tickstart = 0; |
mbed_official | 573:ad23fe03a082 | 285 | |
mbed_official | 573:ad23fe03a082 | 286 | /* Process locked */ |
mbed_official | 573:ad23fe03a082 | 287 | __HAL_LOCK(hiwdg); |
mbed_official | 573:ad23fe03a082 | 288 | |
mbed_official | 573:ad23fe03a082 | 289 | /* Change IWDG peripheral state */ |
mbed_official | 573:ad23fe03a082 | 290 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 573:ad23fe03a082 | 291 | |
mbed_official | 573:ad23fe03a082 | 292 | /* Reload IWDG counter with value defined in the RLR register */ |
mbed_official | 573:ad23fe03a082 | 293 | if ((hiwdg->Init.Window) == IWDG_WINDOW_DISABLE) |
mbed_official | 573:ad23fe03a082 | 294 | { |
mbed_official | 573:ad23fe03a082 | 295 | __HAL_IWDG_RELOAD_COUNTER(hiwdg); |
mbed_official | 573:ad23fe03a082 | 296 | } |
mbed_official | 573:ad23fe03a082 | 297 | |
mbed_official | 573:ad23fe03a082 | 298 | /* Start the IWDG peripheral */ |
mbed_official | 573:ad23fe03a082 | 299 | __HAL_IWDG_START(hiwdg); |
mbed_official | 573:ad23fe03a082 | 300 | |
mbed_official | 573:ad23fe03a082 | 301 | tickstart = HAL_GetTick(); |
mbed_official | 573:ad23fe03a082 | 302 | |
mbed_official | 573:ad23fe03a082 | 303 | /* Wait until PVU, RVU, WVU flag are RESET */ |
mbed_official | 573:ad23fe03a082 | 304 | while( (__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET) |
mbed_official | 573:ad23fe03a082 | 305 | &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET) |
mbed_official | 573:ad23fe03a082 | 306 | &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_WVU) != RESET) ) |
mbed_official | 573:ad23fe03a082 | 307 | { |
mbed_official | 573:ad23fe03a082 | 308 | |
mbed_official | 573:ad23fe03a082 | 309 | if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT) |
mbed_official | 573:ad23fe03a082 | 310 | { |
mbed_official | 573:ad23fe03a082 | 311 | /* Set IWDG state */ |
mbed_official | 573:ad23fe03a082 | 312 | hiwdg->State = HAL_IWDG_STATE_TIMEOUT; |
mbed_official | 573:ad23fe03a082 | 313 | |
mbed_official | 573:ad23fe03a082 | 314 | /* Process unlocked */ |
mbed_official | 573:ad23fe03a082 | 315 | __HAL_UNLOCK(hiwdg); |
mbed_official | 573:ad23fe03a082 | 316 | |
mbed_official | 573:ad23fe03a082 | 317 | return HAL_TIMEOUT; |
mbed_official | 573:ad23fe03a082 | 318 | } |
mbed_official | 573:ad23fe03a082 | 319 | } |
mbed_official | 573:ad23fe03a082 | 320 | |
mbed_official | 573:ad23fe03a082 | 321 | /* Change IWDG peripheral state */ |
mbed_official | 573:ad23fe03a082 | 322 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 573:ad23fe03a082 | 323 | |
mbed_official | 573:ad23fe03a082 | 324 | /* Process Unlocked */ |
mbed_official | 573:ad23fe03a082 | 325 | __HAL_UNLOCK(hiwdg); |
mbed_official | 573:ad23fe03a082 | 326 | |
mbed_official | 573:ad23fe03a082 | 327 | /* Return function status */ |
mbed_official | 573:ad23fe03a082 | 328 | return HAL_OK; |
mbed_official | 573:ad23fe03a082 | 329 | } |
mbed_official | 573:ad23fe03a082 | 330 | |
mbed_official | 573:ad23fe03a082 | 331 | /** |
mbed_official | 573:ad23fe03a082 | 332 | * @brief Refreshes the IWDG. |
mbed_official | 573:ad23fe03a082 | 333 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 573:ad23fe03a082 | 334 | * the configuration information for the specified IWDG module. |
mbed_official | 573:ad23fe03a082 | 335 | * @retval HAL status |
mbed_official | 573:ad23fe03a082 | 336 | */ |
mbed_official | 573:ad23fe03a082 | 337 | HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 573:ad23fe03a082 | 338 | { |
mbed_official | 573:ad23fe03a082 | 339 | uint32_t tickstart = 0; |
mbed_official | 573:ad23fe03a082 | 340 | |
mbed_official | 573:ad23fe03a082 | 341 | /* Process Locked */ |
mbed_official | 573:ad23fe03a082 | 342 | __HAL_LOCK(hiwdg); |
mbed_official | 573:ad23fe03a082 | 343 | |
mbed_official | 573:ad23fe03a082 | 344 | /* Change IWDG peripheral state */ |
mbed_official | 573:ad23fe03a082 | 345 | hiwdg->State = HAL_IWDG_STATE_BUSY; |
mbed_official | 573:ad23fe03a082 | 346 | |
mbed_official | 573:ad23fe03a082 | 347 | tickstart = HAL_GetTick(); |
mbed_official | 573:ad23fe03a082 | 348 | |
mbed_official | 573:ad23fe03a082 | 349 | /* Wait until RVU flag is RESET */ |
mbed_official | 573:ad23fe03a082 | 350 | while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET) |
mbed_official | 573:ad23fe03a082 | 351 | { |
mbed_official | 573:ad23fe03a082 | 352 | if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT) |
mbed_official | 573:ad23fe03a082 | 353 | { |
mbed_official | 573:ad23fe03a082 | 354 | /* Set IWDG state */ |
mbed_official | 573:ad23fe03a082 | 355 | hiwdg->State = HAL_IWDG_STATE_TIMEOUT; |
mbed_official | 573:ad23fe03a082 | 356 | |
mbed_official | 573:ad23fe03a082 | 357 | /* Process unlocked */ |
mbed_official | 573:ad23fe03a082 | 358 | __HAL_UNLOCK(hiwdg); |
mbed_official | 573:ad23fe03a082 | 359 | |
mbed_official | 573:ad23fe03a082 | 360 | return HAL_TIMEOUT; |
mbed_official | 573:ad23fe03a082 | 361 | } |
mbed_official | 573:ad23fe03a082 | 362 | } |
mbed_official | 573:ad23fe03a082 | 363 | |
mbed_official | 573:ad23fe03a082 | 364 | /* Reload IWDG counter with value defined in the reload register */ |
mbed_official | 573:ad23fe03a082 | 365 | __HAL_IWDG_RELOAD_COUNTER(hiwdg); |
mbed_official | 573:ad23fe03a082 | 366 | |
mbed_official | 573:ad23fe03a082 | 367 | /* Change IWDG peripheral state */ |
mbed_official | 573:ad23fe03a082 | 368 | hiwdg->State = HAL_IWDG_STATE_READY; |
mbed_official | 573:ad23fe03a082 | 369 | |
mbed_official | 573:ad23fe03a082 | 370 | /* Process Unlocked */ |
mbed_official | 573:ad23fe03a082 | 371 | __HAL_UNLOCK(hiwdg); |
mbed_official | 573:ad23fe03a082 | 372 | |
mbed_official | 573:ad23fe03a082 | 373 | /* Return function status */ |
mbed_official | 573:ad23fe03a082 | 374 | return HAL_OK; |
mbed_official | 573:ad23fe03a082 | 375 | } |
mbed_official | 573:ad23fe03a082 | 376 | |
mbed_official | 573:ad23fe03a082 | 377 | /** |
mbed_official | 573:ad23fe03a082 | 378 | * @} |
mbed_official | 573:ad23fe03a082 | 379 | */ |
mbed_official | 573:ad23fe03a082 | 380 | |
mbed_official | 573:ad23fe03a082 | 381 | /** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions |
mbed_official | 573:ad23fe03a082 | 382 | * @brief Peripheral State functions. |
mbed_official | 573:ad23fe03a082 | 383 | * |
mbed_official | 573:ad23fe03a082 | 384 | @verbatim |
mbed_official | 573:ad23fe03a082 | 385 | =============================================================================== |
mbed_official | 573:ad23fe03a082 | 386 | ##### Peripheral State functions ##### |
mbed_official | 573:ad23fe03a082 | 387 | =============================================================================== |
mbed_official | 573:ad23fe03a082 | 388 | [..] |
mbed_official | 573:ad23fe03a082 | 389 | This subsection permits to get in run-time the status of the peripheral. |
mbed_official | 573:ad23fe03a082 | 390 | |
mbed_official | 573:ad23fe03a082 | 391 | @endverbatim |
mbed_official | 573:ad23fe03a082 | 392 | * @{ |
mbed_official | 573:ad23fe03a082 | 393 | */ |
mbed_official | 573:ad23fe03a082 | 394 | |
mbed_official | 573:ad23fe03a082 | 395 | /** |
mbed_official | 573:ad23fe03a082 | 396 | * @brief Returns the IWDG state. |
mbed_official | 573:ad23fe03a082 | 397 | * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains |
mbed_official | 573:ad23fe03a082 | 398 | * the configuration information for the specified IWDG module. |
mbed_official | 573:ad23fe03a082 | 399 | * @retval HAL state |
mbed_official | 573:ad23fe03a082 | 400 | */ |
mbed_official | 573:ad23fe03a082 | 401 | HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg) |
mbed_official | 573:ad23fe03a082 | 402 | { |
mbed_official | 573:ad23fe03a082 | 403 | return hiwdg->State; |
mbed_official | 573:ad23fe03a082 | 404 | } |
mbed_official | 573:ad23fe03a082 | 405 | |
mbed_official | 573:ad23fe03a082 | 406 | /** |
mbed_official | 573:ad23fe03a082 | 407 | * @} |
mbed_official | 573:ad23fe03a082 | 408 | */ |
mbed_official | 573:ad23fe03a082 | 409 | |
mbed_official | 573:ad23fe03a082 | 410 | /** |
mbed_official | 573:ad23fe03a082 | 411 | * @} |
mbed_official | 573:ad23fe03a082 | 412 | */ |
mbed_official | 573:ad23fe03a082 | 413 | |
mbed_official | 573:ad23fe03a082 | 414 | #endif /* HAL_IWDG_MODULE_ENABLED */ |
mbed_official | 573:ad23fe03a082 | 415 | /** |
mbed_official | 573:ad23fe03a082 | 416 | * @} |
mbed_official | 573:ad23fe03a082 | 417 | */ |
mbed_official | 573:ad23fe03a082 | 418 | |
mbed_official | 573:ad23fe03a082 | 419 | /** |
mbed_official | 573:ad23fe03a082 | 420 | * @} |
mbed_official | 573:ad23fe03a082 | 421 | */ |
mbed_official | 573:ad23fe03a082 | 422 | |
mbed_official | 573:ad23fe03a082 | 423 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |