mbed library sources
Dependents: frdm_kl05z_gpio_test
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targets/cmsis/TARGET_STM/TARGET_NUCLEO_L053R8/stm32l0xx_hal_wwdg.c@323:9e901b0a5aa1, 2014-09-13 (annotated)
- Committer:
- shaoziyang
- Date:
- Sat Sep 13 14:25:46 2014 +0000
- Revision:
- 323:9e901b0a5aa1
- Parent:
- 181:a4cbdfbbd2f4
test with CLOCK_SETUP = 0
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 181:a4cbdfbbd2f4 | 1 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 2 | ****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 3 | * @file stm32l0xx_hal_wwdg.c |
mbed_official | 181:a4cbdfbbd2f4 | 4 | * @author MCD Application Team |
mbed_official | 181:a4cbdfbbd2f4 | 5 | * @version V1.0.0 |
mbed_official | 181:a4cbdfbbd2f4 | 6 | * @date 22-April-2014 |
mbed_official | 181:a4cbdfbbd2f4 | 7 | * @brief WWDG HAL module driver. |
mbed_official | 181:a4cbdfbbd2f4 | 8 | * This file provides firmware functions to manage the following |
mbed_official | 181:a4cbdfbbd2f4 | 9 | * functionalities of the Window Watchdog (WWDG) peripheral: |
mbed_official | 181:a4cbdfbbd2f4 | 10 | * + Initialization and de-initialization functions |
mbed_official | 181:a4cbdfbbd2f4 | 11 | * + IO operation functions |
mbed_official | 181:a4cbdfbbd2f4 | 12 | * + Peripheral State functions |
mbed_official | 181:a4cbdfbbd2f4 | 13 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 14 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 15 | ##### WWDG specific features ##### |
mbed_official | 181:a4cbdfbbd2f4 | 16 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 17 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 18 | Once enabled the WWDG generates a system reset on expiry of a programmed |
mbed_official | 181:a4cbdfbbd2f4 | 19 | time period, unless the program refreshes the counter (downcounter) |
mbed_official | 181:a4cbdfbbd2f4 | 20 | before reaching 0x3F value (i.e. a reset is generated when the counter |
mbed_official | 181:a4cbdfbbd2f4 | 21 | value rolls over from 0x40 to 0x3F). |
mbed_official | 181:a4cbdfbbd2f4 | 22 | |
mbed_official | 181:a4cbdfbbd2f4 | 23 | (+) An MCU reset is also generated if the counter value is refreshed |
mbed_official | 181:a4cbdfbbd2f4 | 24 | before the counter has reached the refresh window value. This |
mbed_official | 181:a4cbdfbbd2f4 | 25 | implies that the counter must be refreshed in a limited window. |
mbed_official | 181:a4cbdfbbd2f4 | 26 | (+) Once enabled the WWDG cannot be disabled except by a system reset. |
mbed_official | 181:a4cbdfbbd2f4 | 27 | (+) WWDGRST flag in RCC_CSR register can be used to inform when a WWDG |
mbed_official | 181:a4cbdfbbd2f4 | 28 | reset occurs. |
mbed_official | 181:a4cbdfbbd2f4 | 29 | (+) The WWDG counter input clock is derived from the APB clock divided |
mbed_official | 181:a4cbdfbbd2f4 | 30 | by a programmable prescaler. |
mbed_official | 181:a4cbdfbbd2f4 | 31 | (+) WWDG counter clock = PCLK1 / Prescaler |
mbed_official | 181:a4cbdfbbd2f4 | 32 | WWDG timeout = (WWDG counter clock) * (counter value) |
mbed_official | 181:a4cbdfbbd2f4 | 33 | (+) Min-max timeout value @32 MHz(PCLK1): ~128.0 us / ~65.54 ms |
mbed_official | 181:a4cbdfbbd2f4 | 34 | |
mbed_official | 181:a4cbdfbbd2f4 | 35 | |
mbed_official | 181:a4cbdfbbd2f4 | 36 | ##### How to use this driver ##### |
mbed_official | 181:a4cbdfbbd2f4 | 37 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 38 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 39 | (+) Enable WWDG APB1 clock using __WWDG_CLK_ENABLE(). |
mbed_official | 181:a4cbdfbbd2f4 | 40 | (+) Set the WWDG prescaler, refresh window and counter value |
mbed_official | 181:a4cbdfbbd2f4 | 41 | using HAL_WWDG_Init() function. |
mbed_official | 181:a4cbdfbbd2f4 | 42 | (+) Start the WWDG using HAL_WWDG_Start() function. |
mbed_official | 181:a4cbdfbbd2f4 | 43 | When the WWDG is enabled the counter value should be configured to |
mbed_official | 181:a4cbdfbbd2f4 | 44 | a value greater than 0x40 to prevent generating an immediate reset. |
mbed_official | 181:a4cbdfbbd2f4 | 45 | (+) Optionally you can enable the Early Wakeup Interrupt (EWI) which is |
mbed_official | 181:a4cbdfbbd2f4 | 46 | generated when the counter reaches 0x40, and then start the WWDG using |
mbed_official | 181:a4cbdfbbd2f4 | 47 | HAL_WWDG_Start_IT(). |
mbed_official | 181:a4cbdfbbd2f4 | 48 | Once enabled, EWI interrupt cannot be disabled except by a system reset. |
mbed_official | 181:a4cbdfbbd2f4 | 49 | (+) Then the application program must refresh the WWDG counter at regular |
mbed_official | 181:a4cbdfbbd2f4 | 50 | intervals during normal operation to prevent an MCU reset, using |
mbed_official | 181:a4cbdfbbd2f4 | 51 | HAL_WWDG_Refresh() function. This operation must occur only when |
mbed_official | 181:a4cbdfbbd2f4 | 52 | the counter is lower than the refresh window value already programmed. |
mbed_official | 181:a4cbdfbbd2f4 | 53 | |
mbed_official | 181:a4cbdfbbd2f4 | 54 | *** WWDG HAL driver macros list *** |
mbed_official | 181:a4cbdfbbd2f4 | 55 | ================================== |
mbed_official | 181:a4cbdfbbd2f4 | 56 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 57 | Below the list of most used macros in WWDG HAL driver. |
mbed_official | 181:a4cbdfbbd2f4 | 58 | |
mbed_official | 181:a4cbdfbbd2f4 | 59 | (+) __HAL_WWDG_ENABLE: Enable the WWDG peripheral |
mbed_official | 181:a4cbdfbbd2f4 | 60 | (+) __HAL_WWDG_GET_FLAG: Get the selected WWDG's flag status |
mbed_official | 181:a4cbdfbbd2f4 | 61 | (+) __HAL_WWDG_CLEAR_FLAG: Clear the WWDG's pending flags |
mbed_official | 181:a4cbdfbbd2f4 | 62 | (+) __HAL_WWDG_ENABLE_IT: Enables the WWDG early wakeup interrupt |
mbed_official | 181:a4cbdfbbd2f4 | 63 | |
mbed_official | 181:a4cbdfbbd2f4 | 64 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 65 | ****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 66 | * @attention |
mbed_official | 181:a4cbdfbbd2f4 | 67 | * |
mbed_official | 181:a4cbdfbbd2f4 | 68 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
mbed_official | 181:a4cbdfbbd2f4 | 69 | * |
mbed_official | 181:a4cbdfbbd2f4 | 70 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 181:a4cbdfbbd2f4 | 71 | * are permitted provided that the following conditions are met: |
mbed_official | 181:a4cbdfbbd2f4 | 72 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 181:a4cbdfbbd2f4 | 73 | * this list of conditions and the following disclaimer. |
mbed_official | 181:a4cbdfbbd2f4 | 74 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 181:a4cbdfbbd2f4 | 75 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 181:a4cbdfbbd2f4 | 76 | * and/or other materials provided with the distribution. |
mbed_official | 181:a4cbdfbbd2f4 | 77 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 181:a4cbdfbbd2f4 | 78 | * may be used to endorse or promote products derived from this software |
mbed_official | 181:a4cbdfbbd2f4 | 79 | * without specific prior written permission. |
mbed_official | 181:a4cbdfbbd2f4 | 80 | * |
mbed_official | 181:a4cbdfbbd2f4 | 81 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 181:a4cbdfbbd2f4 | 82 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 181:a4cbdfbbd2f4 | 83 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 181:a4cbdfbbd2f4 | 84 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 181:a4cbdfbbd2f4 | 85 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 181:a4cbdfbbd2f4 | 86 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 181:a4cbdfbbd2f4 | 87 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 181:a4cbdfbbd2f4 | 88 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 181:a4cbdfbbd2f4 | 89 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 181:a4cbdfbbd2f4 | 90 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 181:a4cbdfbbd2f4 | 91 | * |
mbed_official | 181:a4cbdfbbd2f4 | 92 | ****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 93 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 94 | |
mbed_official | 181:a4cbdfbbd2f4 | 95 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 96 | #include "stm32l0xx_hal.h" |
mbed_official | 181:a4cbdfbbd2f4 | 97 | |
mbed_official | 181:a4cbdfbbd2f4 | 98 | /** @addtogroup STM32L0xx_HAL_Driver |
mbed_official | 181:a4cbdfbbd2f4 | 99 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 100 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 101 | |
mbed_official | 181:a4cbdfbbd2f4 | 102 | /** @defgroup WWDG |
mbed_official | 181:a4cbdfbbd2f4 | 103 | * @brief WWDG HAL module driver. |
mbed_official | 181:a4cbdfbbd2f4 | 104 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 105 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 106 | |
mbed_official | 181:a4cbdfbbd2f4 | 107 | #ifdef HAL_WWDG_MODULE_ENABLED |
mbed_official | 181:a4cbdfbbd2f4 | 108 | |
mbed_official | 181:a4cbdfbbd2f4 | 109 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 110 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 111 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 112 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 113 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 114 | /* Private functions ---------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 115 | |
mbed_official | 181:a4cbdfbbd2f4 | 116 | /** @defgroup WWDG_Private_Functions |
mbed_official | 181:a4cbdfbbd2f4 | 117 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 118 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 119 | |
mbed_official | 181:a4cbdfbbd2f4 | 120 | /** @defgroup WWDG_Group1 Initialization and de-initialization functions |
mbed_official | 181:a4cbdfbbd2f4 | 121 | * @brief Initialization and Configuration functions. |
mbed_official | 181:a4cbdfbbd2f4 | 122 | * |
mbed_official | 181:a4cbdfbbd2f4 | 123 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 124 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 125 | ##### Initialization and de-initialization functions ##### |
mbed_official | 181:a4cbdfbbd2f4 | 126 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 127 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 128 | This section provides functions allowing to: |
mbed_official | 181:a4cbdfbbd2f4 | 129 | (+) Initialize the WWDG according to the specified parameters |
mbed_official | 181:a4cbdfbbd2f4 | 130 | in the WWDG_InitTypeDef and create the associated handle |
mbed_official | 181:a4cbdfbbd2f4 | 131 | (+) DeInitialize the WWDG peripheral |
mbed_official | 181:a4cbdfbbd2f4 | 132 | (+) Initialize the WWDG MSP |
mbed_official | 181:a4cbdfbbd2f4 | 133 | (+) DeInitialize the WWDG MSP |
mbed_official | 181:a4cbdfbbd2f4 | 134 | |
mbed_official | 181:a4cbdfbbd2f4 | 135 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 136 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 137 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 138 | |
mbed_official | 181:a4cbdfbbd2f4 | 139 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 140 | * @brief Initializes the WWDG according to the specified |
mbed_official | 181:a4cbdfbbd2f4 | 141 | * parameters in the WWDG_InitTypeDef and creates the associated handle. |
mbed_official | 181:a4cbdfbbd2f4 | 142 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 143 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 144 | * @retval HAL status |
mbed_official | 181:a4cbdfbbd2f4 | 145 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 146 | HAL_StatusTypeDef HAL_WWDG_Init(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 147 | { |
mbed_official | 181:a4cbdfbbd2f4 | 148 | uint32_t tmp = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 149 | |
mbed_official | 181:a4cbdfbbd2f4 | 150 | /* Check the WWDG handle allocation */ |
mbed_official | 181:a4cbdfbbd2f4 | 151 | if(hwwdg == NULL) |
mbed_official | 181:a4cbdfbbd2f4 | 152 | { |
mbed_official | 181:a4cbdfbbd2f4 | 153 | return HAL_ERROR; |
mbed_official | 181:a4cbdfbbd2f4 | 154 | } |
mbed_official | 181:a4cbdfbbd2f4 | 155 | |
mbed_official | 181:a4cbdfbbd2f4 | 156 | /* Check the parameters */ |
mbed_official | 181:a4cbdfbbd2f4 | 157 | assert_param(IS_WWDG_PRESCALER(hwwdg->Init.Prescaler)); |
mbed_official | 181:a4cbdfbbd2f4 | 158 | assert_param(IS_WWDG_WINDOW(hwwdg->Init.Window)); |
mbed_official | 181:a4cbdfbbd2f4 | 159 | assert_param(IS_WWDG_COUNTER(hwwdg->Init.Counter)); |
mbed_official | 181:a4cbdfbbd2f4 | 160 | |
mbed_official | 181:a4cbdfbbd2f4 | 161 | if(hwwdg->State == HAL_WWDG_STATE_RESET) |
mbed_official | 181:a4cbdfbbd2f4 | 162 | { |
mbed_official | 181:a4cbdfbbd2f4 | 163 | /* Init the low level hardware */ |
mbed_official | 181:a4cbdfbbd2f4 | 164 | HAL_WWDG_MspInit(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 165 | } |
mbed_official | 181:a4cbdfbbd2f4 | 166 | |
mbed_official | 181:a4cbdfbbd2f4 | 167 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 168 | hwwdg->State = HAL_WWDG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 169 | |
mbed_official | 181:a4cbdfbbd2f4 | 170 | /* Set WWDG Prescaler and Window */ |
mbed_official | 181:a4cbdfbbd2f4 | 171 | /* Get the CFR register value */ |
mbed_official | 181:a4cbdfbbd2f4 | 172 | tmp = hwwdg->Instance->CFR; |
mbed_official | 181:a4cbdfbbd2f4 | 173 | |
mbed_official | 181:a4cbdfbbd2f4 | 174 | /* Clear WDGTB[1:0] and W[6:0] bits */ |
mbed_official | 181:a4cbdfbbd2f4 | 175 | tmp &= ((uint32_t)~(WWDG_CFR_WDGTB | WWDG_CFR_W)); |
mbed_official | 181:a4cbdfbbd2f4 | 176 | |
mbed_official | 181:a4cbdfbbd2f4 | 177 | /* Prepare the WWDG Prescaler and Window parameters */ |
mbed_official | 181:a4cbdfbbd2f4 | 178 | tmp |= hwwdg->Init.Prescaler | hwwdg->Init.Window; |
mbed_official | 181:a4cbdfbbd2f4 | 179 | |
mbed_official | 181:a4cbdfbbd2f4 | 180 | /* Write to WWDG CFR */ |
mbed_official | 181:a4cbdfbbd2f4 | 181 | hwwdg->Instance->CFR = tmp; |
mbed_official | 181:a4cbdfbbd2f4 | 182 | |
mbed_official | 181:a4cbdfbbd2f4 | 183 | /* Set WWDG Counter */ |
mbed_official | 181:a4cbdfbbd2f4 | 184 | /* Get the CR register value */ |
mbed_official | 181:a4cbdfbbd2f4 | 185 | tmp = hwwdg->Instance->CR; |
mbed_official | 181:a4cbdfbbd2f4 | 186 | |
mbed_official | 181:a4cbdfbbd2f4 | 187 | /* Clear T[6:0] bits */ |
mbed_official | 181:a4cbdfbbd2f4 | 188 | tmp &= (uint32_t)~((uint32_t)WWDG_CR_T); |
mbed_official | 181:a4cbdfbbd2f4 | 189 | |
mbed_official | 181:a4cbdfbbd2f4 | 190 | /* Prepare the WWDG Counter parameter */ |
mbed_official | 181:a4cbdfbbd2f4 | 191 | tmp |= (hwwdg->Init.Counter); |
mbed_official | 181:a4cbdfbbd2f4 | 192 | |
mbed_official | 181:a4cbdfbbd2f4 | 193 | /* Write to WWDG CR */ |
mbed_official | 181:a4cbdfbbd2f4 | 194 | hwwdg->Instance->CR = tmp; |
mbed_official | 181:a4cbdfbbd2f4 | 195 | |
mbed_official | 181:a4cbdfbbd2f4 | 196 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 197 | hwwdg->State = HAL_WWDG_STATE_READY; |
mbed_official | 181:a4cbdfbbd2f4 | 198 | |
mbed_official | 181:a4cbdfbbd2f4 | 199 | /* Return function status */ |
mbed_official | 181:a4cbdfbbd2f4 | 200 | return HAL_OK; |
mbed_official | 181:a4cbdfbbd2f4 | 201 | } |
mbed_official | 181:a4cbdfbbd2f4 | 202 | |
mbed_official | 181:a4cbdfbbd2f4 | 203 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 204 | * @brief DeInitializes the WWDG peripheral. |
mbed_official | 181:a4cbdfbbd2f4 | 205 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 206 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 207 | * @retval HAL status |
mbed_official | 181:a4cbdfbbd2f4 | 208 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 209 | HAL_StatusTypeDef HAL_WWDG_DeInit(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 210 | { |
mbed_official | 181:a4cbdfbbd2f4 | 211 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 212 | hwwdg->State = HAL_WWDG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 213 | |
mbed_official | 181:a4cbdfbbd2f4 | 214 | /* DeInit the low level hardware */ |
mbed_official | 181:a4cbdfbbd2f4 | 215 | HAL_WWDG_MspDeInit(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 216 | |
mbed_official | 181:a4cbdfbbd2f4 | 217 | /* Reset WWDG Control register */ |
mbed_official | 181:a4cbdfbbd2f4 | 218 | hwwdg->Instance->CR = (uint32_t)0x0000007F; |
mbed_official | 181:a4cbdfbbd2f4 | 219 | |
mbed_official | 181:a4cbdfbbd2f4 | 220 | /* Reset WWDG Configuration register */ |
mbed_official | 181:a4cbdfbbd2f4 | 221 | hwwdg->Instance->CFR = (uint32_t)0x0000007F; |
mbed_official | 181:a4cbdfbbd2f4 | 222 | |
mbed_official | 181:a4cbdfbbd2f4 | 223 | /* Reset WWDG Status register */ |
mbed_official | 181:a4cbdfbbd2f4 | 224 | hwwdg->Instance->SR = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 225 | |
mbed_official | 181:a4cbdfbbd2f4 | 226 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 227 | hwwdg->State = HAL_WWDG_STATE_RESET; |
mbed_official | 181:a4cbdfbbd2f4 | 228 | |
mbed_official | 181:a4cbdfbbd2f4 | 229 | /* Release Lock */ |
mbed_official | 181:a4cbdfbbd2f4 | 230 | __HAL_UNLOCK(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 231 | |
mbed_official | 181:a4cbdfbbd2f4 | 232 | /* Return function status */ |
mbed_official | 181:a4cbdfbbd2f4 | 233 | return HAL_OK; |
mbed_official | 181:a4cbdfbbd2f4 | 234 | } |
mbed_official | 181:a4cbdfbbd2f4 | 235 | |
mbed_official | 181:a4cbdfbbd2f4 | 236 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 237 | * @brief Initializes the WWDG MSP. |
mbed_official | 181:a4cbdfbbd2f4 | 238 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 239 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 240 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 241 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 242 | __weak void HAL_WWDG_MspInit(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 243 | { |
mbed_official | 181:a4cbdfbbd2f4 | 244 | /* NOTE: This function Should not be modified, when the callback is needed, |
mbed_official | 181:a4cbdfbbd2f4 | 245 | the HAL_WWDG_MspInit could be implemented in the user file |
mbed_official | 181:a4cbdfbbd2f4 | 246 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 247 | } |
mbed_official | 181:a4cbdfbbd2f4 | 248 | |
mbed_official | 181:a4cbdfbbd2f4 | 249 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 250 | * @brief DeInitializes the WWDG MSP. |
mbed_official | 181:a4cbdfbbd2f4 | 251 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 252 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 253 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 254 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 255 | __weak void HAL_WWDG_MspDeInit(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 256 | { |
mbed_official | 181:a4cbdfbbd2f4 | 257 | /* NOTE: This function Should not be modified, when the callback is needed, |
mbed_official | 181:a4cbdfbbd2f4 | 258 | the HAL_WWDG_MspDeInit could be implemented in the user file |
mbed_official | 181:a4cbdfbbd2f4 | 259 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 260 | } |
mbed_official | 181:a4cbdfbbd2f4 | 261 | |
mbed_official | 181:a4cbdfbbd2f4 | 262 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 263 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 264 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 265 | |
mbed_official | 181:a4cbdfbbd2f4 | 266 | /** @defgroup WWDG_Group2 IO operation functions |
mbed_official | 181:a4cbdfbbd2f4 | 267 | * @brief IO operation functions |
mbed_official | 181:a4cbdfbbd2f4 | 268 | * |
mbed_official | 181:a4cbdfbbd2f4 | 269 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 270 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 271 | ##### IO operation functions ##### |
mbed_official | 181:a4cbdfbbd2f4 | 272 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 273 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 274 | This section provides functions allowing to: |
mbed_official | 181:a4cbdfbbd2f4 | 275 | (+) Start the WWDG. |
mbed_official | 181:a4cbdfbbd2f4 | 276 | (+) Refresh the WWDG. |
mbed_official | 181:a4cbdfbbd2f4 | 277 | (+) Handle WWDG interrupt request. |
mbed_official | 181:a4cbdfbbd2f4 | 278 | |
mbed_official | 181:a4cbdfbbd2f4 | 279 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 280 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 281 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 282 | |
mbed_official | 181:a4cbdfbbd2f4 | 283 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 284 | * @brief Starts the WWDG. |
mbed_official | 181:a4cbdfbbd2f4 | 285 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 286 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 287 | * @retval HAL status |
mbed_official | 181:a4cbdfbbd2f4 | 288 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 289 | HAL_StatusTypeDef HAL_WWDG_Start(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 290 | { |
mbed_official | 181:a4cbdfbbd2f4 | 291 | /* Process Locked */ |
mbed_official | 181:a4cbdfbbd2f4 | 292 | __HAL_LOCK(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 293 | |
mbed_official | 181:a4cbdfbbd2f4 | 294 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 295 | hwwdg->State = HAL_WWDG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 296 | |
mbed_official | 181:a4cbdfbbd2f4 | 297 | /* Enable the peripheral */ |
mbed_official | 181:a4cbdfbbd2f4 | 298 | __HAL_WWDG_ENABLE(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 299 | |
mbed_official | 181:a4cbdfbbd2f4 | 300 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 301 | hwwdg->State = HAL_WWDG_STATE_READY; |
mbed_official | 181:a4cbdfbbd2f4 | 302 | |
mbed_official | 181:a4cbdfbbd2f4 | 303 | /* Process Unlocked */ |
mbed_official | 181:a4cbdfbbd2f4 | 304 | __HAL_UNLOCK(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 305 | |
mbed_official | 181:a4cbdfbbd2f4 | 306 | /* Return function status */ |
mbed_official | 181:a4cbdfbbd2f4 | 307 | return HAL_OK; |
mbed_official | 181:a4cbdfbbd2f4 | 308 | } |
mbed_official | 181:a4cbdfbbd2f4 | 309 | |
mbed_official | 181:a4cbdfbbd2f4 | 310 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 311 | * @brief Starts the WWDG with interrupt enabled. |
mbed_official | 181:a4cbdfbbd2f4 | 312 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 313 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 314 | * @retval HAL status |
mbed_official | 181:a4cbdfbbd2f4 | 315 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 316 | HAL_StatusTypeDef HAL_WWDG_Start_IT(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 317 | { |
mbed_official | 181:a4cbdfbbd2f4 | 318 | /* Process Locked */ |
mbed_official | 181:a4cbdfbbd2f4 | 319 | __HAL_LOCK(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 320 | |
mbed_official | 181:a4cbdfbbd2f4 | 321 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 322 | hwwdg->State = HAL_WWDG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 323 | |
mbed_official | 181:a4cbdfbbd2f4 | 324 | /* Enable the Early Wakeup Interrupt */ |
mbed_official | 181:a4cbdfbbd2f4 | 325 | __HAL_WWDG_ENABLE_IT(WWDG_IT_EWI); |
mbed_official | 181:a4cbdfbbd2f4 | 326 | |
mbed_official | 181:a4cbdfbbd2f4 | 327 | /* Enable the peripheral */ |
mbed_official | 181:a4cbdfbbd2f4 | 328 | __HAL_WWDG_ENABLE(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 329 | |
mbed_official | 181:a4cbdfbbd2f4 | 330 | /* Return function status */ |
mbed_official | 181:a4cbdfbbd2f4 | 331 | return HAL_OK; |
mbed_official | 181:a4cbdfbbd2f4 | 332 | } |
mbed_official | 181:a4cbdfbbd2f4 | 333 | |
mbed_official | 181:a4cbdfbbd2f4 | 334 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 335 | * @brief Refreshes the WWDG. |
mbed_official | 181:a4cbdfbbd2f4 | 336 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 337 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 338 | * @retval HAL status |
mbed_official | 181:a4cbdfbbd2f4 | 339 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 340 | HAL_StatusTypeDef HAL_WWDG_Refresh(WWDG_HandleTypeDef *hwwdg, uint32_t Counter) |
mbed_official | 181:a4cbdfbbd2f4 | 341 | { |
mbed_official | 181:a4cbdfbbd2f4 | 342 | /* Process Locked */ |
mbed_official | 181:a4cbdfbbd2f4 | 343 | __HAL_LOCK(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 344 | |
mbed_official | 181:a4cbdfbbd2f4 | 345 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 346 | hwwdg->State = HAL_WWDG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 347 | |
mbed_official | 181:a4cbdfbbd2f4 | 348 | /* Check the parameters */ |
mbed_official | 181:a4cbdfbbd2f4 | 349 | assert_param(IS_WWDG_COUNTER(Counter)); |
mbed_official | 181:a4cbdfbbd2f4 | 350 | |
mbed_official | 181:a4cbdfbbd2f4 | 351 | /* Write to WWDG CR the WWDG Counter value to refresh with */ |
mbed_official | 181:a4cbdfbbd2f4 | 352 | MODIFY_REG(hwwdg->Instance->CR, (uint32_t)WWDG_CR_T, Counter); |
mbed_official | 181:a4cbdfbbd2f4 | 353 | |
mbed_official | 181:a4cbdfbbd2f4 | 354 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 355 | hwwdg->State = HAL_WWDG_STATE_READY; |
mbed_official | 181:a4cbdfbbd2f4 | 356 | |
mbed_official | 181:a4cbdfbbd2f4 | 357 | /* Process Unlocked */ |
mbed_official | 181:a4cbdfbbd2f4 | 358 | __HAL_UNLOCK(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 359 | |
mbed_official | 181:a4cbdfbbd2f4 | 360 | /* Return function status */ |
mbed_official | 181:a4cbdfbbd2f4 | 361 | return HAL_OK; |
mbed_official | 181:a4cbdfbbd2f4 | 362 | } |
mbed_official | 181:a4cbdfbbd2f4 | 363 | |
mbed_official | 181:a4cbdfbbd2f4 | 364 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 365 | * @brief Handles WWDG interrupt request. |
mbed_official | 181:a4cbdfbbd2f4 | 366 | * @note The Early Wakeup Interrupt (EWI) can be used if specific safety operations |
mbed_official | 181:a4cbdfbbd2f4 | 367 | * or data logging must be performed before the actual reset is generated. |
mbed_official | 181:a4cbdfbbd2f4 | 368 | * The EWI interrupt is enabled using __HAL_WWDG_ENABLE_IT() macro. |
mbed_official | 181:a4cbdfbbd2f4 | 369 | * When the downcounter reaches the value 0x40, and EWI interrupt is |
mbed_official | 181:a4cbdfbbd2f4 | 370 | * generated and the corresponding Interrupt Service Routine (ISR) can |
mbed_official | 181:a4cbdfbbd2f4 | 371 | * be used to trigger specific actions (such as communications or data |
mbed_official | 181:a4cbdfbbd2f4 | 372 | * logging), before resetting the device. |
mbed_official | 181:a4cbdfbbd2f4 | 373 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 374 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 375 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 376 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 377 | void HAL_WWDG_IRQHandler(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 378 | { |
mbed_official | 181:a4cbdfbbd2f4 | 379 | /* WWDG Early Wakeup Interrupt occurred */ |
mbed_official | 181:a4cbdfbbd2f4 | 380 | if(__HAL_WWDG_GET_FLAG(hwwdg, WWDG_FLAG_EWIF) != RESET) |
mbed_official | 181:a4cbdfbbd2f4 | 381 | { |
mbed_official | 181:a4cbdfbbd2f4 | 382 | /* Early Wakeup callback */ |
mbed_official | 181:a4cbdfbbd2f4 | 383 | HAL_WWDG_WakeupCallback(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 384 | |
mbed_official | 181:a4cbdfbbd2f4 | 385 | /* Change WWDG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 386 | hwwdg->State = HAL_WWDG_STATE_READY; |
mbed_official | 181:a4cbdfbbd2f4 | 387 | |
mbed_official | 181:a4cbdfbbd2f4 | 388 | /* Clear the WWDG Data Ready flag */ |
mbed_official | 181:a4cbdfbbd2f4 | 389 | __HAL_WWDG_CLEAR_FLAG(hwwdg, WWDG_FLAG_EWIF); |
mbed_official | 181:a4cbdfbbd2f4 | 390 | |
mbed_official | 181:a4cbdfbbd2f4 | 391 | /* Process Unlocked */ |
mbed_official | 181:a4cbdfbbd2f4 | 392 | __HAL_UNLOCK(hwwdg); |
mbed_official | 181:a4cbdfbbd2f4 | 393 | } |
mbed_official | 181:a4cbdfbbd2f4 | 394 | } |
mbed_official | 181:a4cbdfbbd2f4 | 395 | |
mbed_official | 181:a4cbdfbbd2f4 | 396 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 397 | * @brief Early Wakeup WWDG callback. |
mbed_official | 181:a4cbdfbbd2f4 | 398 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 399 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 400 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 401 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 402 | __weak void HAL_WWDG_WakeupCallback(WWDG_HandleTypeDef* hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 403 | { |
mbed_official | 181:a4cbdfbbd2f4 | 404 | /* NOTE: This function Should not be modified, when the callback is needed, |
mbed_official | 181:a4cbdfbbd2f4 | 405 | the HAL_WWDG_WakeupCallback could be implemented in the user file |
mbed_official | 181:a4cbdfbbd2f4 | 406 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 407 | } |
mbed_official | 181:a4cbdfbbd2f4 | 408 | |
mbed_official | 181:a4cbdfbbd2f4 | 409 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 410 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 411 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 412 | |
mbed_official | 181:a4cbdfbbd2f4 | 413 | /** @defgroup WWDG_Group3 Peripheral State functions |
mbed_official | 181:a4cbdfbbd2f4 | 414 | * @brief Peripheral State functions. |
mbed_official | 181:a4cbdfbbd2f4 | 415 | * |
mbed_official | 181:a4cbdfbbd2f4 | 416 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 417 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 418 | ##### Peripheral State functions ##### |
mbed_official | 181:a4cbdfbbd2f4 | 419 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 420 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 421 | This subsection permits to get in run-time the status of the peripheral |
mbed_official | 181:a4cbdfbbd2f4 | 422 | and the data flow. |
mbed_official | 181:a4cbdfbbd2f4 | 423 | |
mbed_official | 181:a4cbdfbbd2f4 | 424 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 425 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 426 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 427 | |
mbed_official | 181:a4cbdfbbd2f4 | 428 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 429 | * @brief Returns the WWDG state. |
mbed_official | 181:a4cbdfbbd2f4 | 430 | * @param hwwdg: pointer to a WWDG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 431 | * the configuration information for the specified WWDG module. |
mbed_official | 181:a4cbdfbbd2f4 | 432 | * @retval HAL state |
mbed_official | 181:a4cbdfbbd2f4 | 433 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 434 | HAL_WWDG_StateTypeDef HAL_WWDG_GetState(WWDG_HandleTypeDef *hwwdg) |
mbed_official | 181:a4cbdfbbd2f4 | 435 | { |
mbed_official | 181:a4cbdfbbd2f4 | 436 | return hwwdg->State; |
mbed_official | 181:a4cbdfbbd2f4 | 437 | } |
mbed_official | 181:a4cbdfbbd2f4 | 438 | |
mbed_official | 181:a4cbdfbbd2f4 | 439 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 440 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 441 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 442 | |
mbed_official | 181:a4cbdfbbd2f4 | 443 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 444 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 445 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 446 | |
mbed_official | 181:a4cbdfbbd2f4 | 447 | #endif /* HAL_WWDG_MODULE_ENABLED */ |
mbed_official | 181:a4cbdfbbd2f4 | 448 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 449 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 450 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 451 | |
mbed_official | 181:a4cbdfbbd2f4 | 452 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 453 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 454 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 455 | |
mbed_official | 181:a4cbdfbbd2f4 | 456 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |