en 129 / mbed-dev

fix LPC812 PWM

Dependents:   IR_LED_Send

Fork of mbed-dev by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F7/stm32f7xx_hal_iwdg.c@129:2e517c56bcfb, 2016-05-16 (annotated)

Committer:
nameless129
Date:
Mon May 16 16:50:30 2016 +0000
Revision:
129:2e517c56bcfb
Parent:
83:a036322b8637 
PWM Fix:Duty 0%??H???????????????

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 0:9b334a45a8ff 1 /**
bogdanm 0:9b334a45a8ff 2 ******************************************************************************
bogdanm 0:9b334a45a8ff 3 * @file stm32f7xx_hal_iwdg.c
bogdanm 0:9b334a45a8ff 4 * @author MCD Application Team
mbed_official 83:a036322b8637 5 * @version V1.0.4
mbed_official 83:a036322b8637 6 * @date 09-December-2015
bogdanm 0:9b334a45a8ff 7 * @brief IWDG HAL module driver.
bogdanm 0:9b334a45a8ff 8 *
bogdanm 0:9b334a45a8ff 9 * This file provides firmware functions to manage the following
bogdanm 0:9b334a45a8ff 10 * functionalities of the Independent Watchdog (IWDG) peripheral:
bogdanm 0:9b334a45a8ff 11 * + Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 12 * + IO operation functions
bogdanm 0:9b334a45a8ff 13 * + Peripheral State functions
bogdanm 0:9b334a45a8ff 14 *
bogdanm 0:9b334a45a8ff 15 @verbatim
bogdanm 0:9b334a45a8ff 16 ==============================================================================
bogdanm 0:9b334a45a8ff 17 ##### IWDG Generic features #####
bogdanm 0:9b334a45a8ff 18 ==============================================================================
bogdanm 0:9b334a45a8ff 19 [..]
bogdanm 0:9b334a45a8ff 20 (+) The IWDG can be started by either software or hardware (configurable
bogdanm 0:9b334a45a8ff 21 through option byte).
bogdanm 0:9b334a45a8ff 22
bogdanm 0:9b334a45a8ff 23 (+) The IWDG is clocked by its own dedicated Low-Speed clock (LSI) and
bogdanm 0:9b334a45a8ff 24 thus stays active even if the main clock fails.
bogdanm 0:9b334a45a8ff 25 Once the IWDG is started, the LSI is forced ON and cannot be disabled
bogdanm 0:9b334a45a8ff 26 (LSI cannot be disabled too), and the counter starts counting down from
bogdanm 0:9b334a45a8ff 27 the reset value of 0xFFF. When it reaches the end of count value (0x000)
bogdanm 0:9b334a45a8ff 28 a system reset is generated.
bogdanm 0:9b334a45a8ff 29
bogdanm 0:9b334a45a8ff 30 (+) The IWDG counter should be refreshed at regular intervals, otherwise the
bogdanm 0:9b334a45a8ff 31 watchdog generates an MCU reset when the counter reaches 0.
bogdanm 0:9b334a45a8ff 32
bogdanm 0:9b334a45a8ff 33 (+) The IWDG is implemented in the VDD voltage domain that is still functional
bogdanm 0:9b334a45a8ff 34 in STOP and STANDBY mode (IWDG reset can wake-up from STANDBY).
bogdanm 0:9b334a45a8ff 35 IWDGRST flag in RCC_CSR register can be used to inform when an IWDG
bogdanm 0:9b334a45a8ff 36 reset occurs.
bogdanm 0:9b334a45a8ff 37
bogdanm 0:9b334a45a8ff 38 [..] Min-max timeout value @32KHz (LSI): ~125us / ~32.7s
bogdanm 0:9b334a45a8ff 39 The IWDG timeout may vary due to LSI frequency dispersion. STM32L4xx
bogdanm 0:9b334a45a8ff 40 devices provide the capability to measure the LSI frequency (LSI clock
bogdanm 0:9b334a45a8ff 41 connected internally to TIM16 CH1 input capture). The measured value
bogdanm 0:9b334a45a8ff 42 can be used to have an IWDG timeout with an acceptable accuracy.
bogdanm 0:9b334a45a8ff 43
bogdanm 0:9b334a45a8ff 44
bogdanm 0:9b334a45a8ff 45 ##### How to use this driver #####
bogdanm 0:9b334a45a8ff 46 ==============================================================================
bogdanm 0:9b334a45a8ff 47 [..]
bogdanm 0:9b334a45a8ff 48 If Window option is disabled
bogdanm 0:9b334a45a8ff 49
bogdanm 0:9b334a45a8ff 50 (+) Use IWDG using HAL_IWDG_Init() function to :
bogdanm 0:9b334a45a8ff 51 (++) Enable write access to IWDG_PR, IWDG_RLR.
bogdanm 0:9b334a45a8ff 52 (++) Configure the IWDG prescaler, counter reload value.
bogdanm 0:9b334a45a8ff 53 This reload value will be loaded in the IWDG counter each time the counter
bogdanm 0:9b334a45a8ff 54 is reloaded, then the IWDG will start counting down from this value.
bogdanm 0:9b334a45a8ff 55 (+) Use IWDG using HAL_IWDG_Start() function to :
bogdanm 0:9b334a45a8ff 56 (++) Reload IWDG counter with value defined in the IWDG_RLR register.
bogdanm 0:9b334a45a8ff 57 (++) Start the IWDG, when the IWDG is used in software mode (no need
bogdanm 0:9b334a45a8ff 58 to enable the LSI, it will be enabled by hardware).
bogdanm 0:9b334a45a8ff 59 (+) Then the application program must refresh the IWDG counter at regular
bogdanm 0:9b334a45a8ff 60 intervals during normal operation to prevent an MCU reset, using
bogdanm 0:9b334a45a8ff 61 HAL_IWDG_Refresh() function.
bogdanm 0:9b334a45a8ff 62 [..]
bogdanm 0:9b334a45a8ff 63 if Window option is enabled:
bogdanm 0:9b334a45a8ff 64
bogdanm 0:9b334a45a8ff 65 (+) Use IWDG using HAL_IWDG_Start() function to enable IWDG downcounter
bogdanm 0:9b334a45a8ff 66 (+) Use IWDG using HAL_IWDG_Init() function to :
bogdanm 0:9b334a45a8ff 67 (++) Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers.
bogdanm 0:9b334a45a8ff 68 (++) Configure the IWDG prescaler, reload value and window value.
bogdanm 0:9b334a45a8ff 69 (+) Then the application program must refresh the IWDG counter at regular
bogdanm 0:9b334a45a8ff 70 intervals during normal operation to prevent an MCU reset, using
bogdanm 0:9b334a45a8ff 71 HAL_IWDG_Refresh() function.
bogdanm 0:9b334a45a8ff 72
bogdanm 0:9b334a45a8ff 73 *** IWDG HAL driver macros list ***
bogdanm 0:9b334a45a8ff 74 ====================================
bogdanm 0:9b334a45a8ff 75 [..]
bogdanm 0:9b334a45a8ff 76 Below the list of most used macros in IWDG HAL driver.
bogdanm 0:9b334a45a8ff 77
bogdanm 0:9b334a45a8ff 78 (+) __HAL_IWDG_START: Enable the IWDG peripheral
bogdanm 0:9b334a45a8ff 79 (+) __HAL_IWDG_RELOAD_COUNTER: Reloads IWDG counter with value defined in the reload register
bogdanm 0:9b334a45a8ff 80 (+) __HAL_IWDG_GET_FLAG: Get the selected IWDG's flag status
bogdanm 0:9b334a45a8ff 81 (+) IWDG_ENABLE_WRITE_ACCESS : Enable write access to IWDG_PR and IWDG_RLR registers
bogdanm 0:9b334a45a8ff 82 (+) IWDG_DISABLE_WRITE_ACCESS : Disable write access to IWDG_PR and IWDG_RLR registers
bogdanm 0:9b334a45a8ff 83
bogdanm 0:9b334a45a8ff 84 @endverbatim
bogdanm 0:9b334a45a8ff 85 ******************************************************************************
bogdanm 0:9b334a45a8ff 86 * @attention
bogdanm 0:9b334a45a8ff 87 *
bogdanm 0:9b334a45a8ff 88 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
bogdanm 0:9b334a45a8ff 89 *
bogdanm 0:9b334a45a8ff 90 * Redistribution and use in source and binary forms, with or without modification,
bogdanm 0:9b334a45a8ff 91 * are permitted provided that the following conditions are met:
bogdanm 0:9b334a45a8ff 92 * 1. Redistributions of source code must retain the above copyright notice,
bogdanm 0:9b334a45a8ff 93 * this list of conditions and the following disclaimer.
bogdanm 0:9b334a45a8ff 94 * 2. Redistributions in binary form must reproduce the above copyright notice,
bogdanm 0:9b334a45a8ff 95 * this list of conditions and the following disclaimer in the documentation
bogdanm 0:9b334a45a8ff 96 * and/or other materials provided with the distribution.
bogdanm 0:9b334a45a8ff 97 * 3. Neither the name of STMicroelectronics nor the names of its contributors
bogdanm 0:9b334a45a8ff 98 * may be used to endorse or promote products derived from this software
bogdanm 0:9b334a45a8ff 99 * without specific prior written permission.
bogdanm 0:9b334a45a8ff 100 *
bogdanm 0:9b334a45a8ff 101 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
bogdanm 0:9b334a45a8ff 102 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
bogdanm 0:9b334a45a8ff 103 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
bogdanm 0:9b334a45a8ff 104 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
bogdanm 0:9b334a45a8ff 105 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
bogdanm 0:9b334a45a8ff 106 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
bogdanm 0:9b334a45a8ff 107 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
bogdanm 0:9b334a45a8ff 108 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
bogdanm 0:9b334a45a8ff 109 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
bogdanm 0:9b334a45a8ff 110 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
bogdanm 0:9b334a45a8ff 111 *
bogdanm 0:9b334a45a8ff 112 ******************************************************************************
bogdanm 0:9b334a45a8ff 113 */
bogdanm 0:9b334a45a8ff 114
bogdanm 0:9b334a45a8ff 115 /* Includes ------------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 116 #include "stm32f7xx_hal.h"
bogdanm 0:9b334a45a8ff 117
bogdanm 0:9b334a45a8ff 118 /** @addtogroup STM32F7xx_HAL_Driver
bogdanm 0:9b334a45a8ff 119 * @{
bogdanm 0:9b334a45a8ff 120 */
bogdanm 0:9b334a45a8ff 121
bogdanm 0:9b334a45a8ff 122 /** @defgroup IWDG IWDG HAL module driver
bogdanm 0:9b334a45a8ff 123 * @brief IWDG HAL module driver.
bogdanm 0:9b334a45a8ff 124 * @{
bogdanm 0:9b334a45a8ff 125 */
bogdanm 0:9b334a45a8ff 126
bogdanm 0:9b334a45a8ff 127 #ifdef HAL_IWDG_MODULE_ENABLED
bogdanm 0:9b334a45a8ff 128
bogdanm 0:9b334a45a8ff 129 /* Private typedef -----------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 130 /* Private define ------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 131 /** @defgroup IWDG_Private_Defines IWDG Private Defines
bogdanm 0:9b334a45a8ff 132 * @{
bogdanm 0:9b334a45a8ff 133 */
bogdanm 0:9b334a45a8ff 134
bogdanm 0:9b334a45a8ff 135 #define HAL_IWDG_DEFAULT_TIMEOUT (uint32_t)1000
bogdanm 0:9b334a45a8ff 136
bogdanm 0:9b334a45a8ff 137 /**
bogdanm 0:9b334a45a8ff 138 * @}
bogdanm 0:9b334a45a8ff 139 */
bogdanm 0:9b334a45a8ff 140 /* Private macro -------------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 141 /* Private variables ---------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 142 /* Private function prototypes -----------------------------------------------*/
bogdanm 0:9b334a45a8ff 143 /* Exported functions --------------------------------------------------------*/
bogdanm 0:9b334a45a8ff 144
bogdanm 0:9b334a45a8ff 145 /** @defgroup IWDG_Exported_Functions IWDG Exported Functions
bogdanm 0:9b334a45a8ff 146 * @{
bogdanm 0:9b334a45a8ff 147 */
bogdanm 0:9b334a45a8ff 148
bogdanm 0:9b334a45a8ff 149 /** @defgroup IWDG_Exported_Functions_Group1 Initialization and de-initialization functions
bogdanm 0:9b334a45a8ff 150 * @brief Initialization and Configuration functions.
bogdanm 0:9b334a45a8ff 151 *
bogdanm 0:9b334a45a8ff 152 @verbatim
bogdanm 0:9b334a45a8ff 153 ===============================================================================
bogdanm 0:9b334a45a8ff 154 ##### Initialization and de-initialization functions #####
bogdanm 0:9b334a45a8ff 155 ===============================================================================
bogdanm 0:9b334a45a8ff 156 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 157 (+) Initialize the IWDG according to the specified parameters
bogdanm 0:9b334a45a8ff 158 in the IWDG_InitTypeDef and create the associated handle
bogdanm 0:9b334a45a8ff 159 (+) Manage Window option
bogdanm 0:9b334a45a8ff 160 (+) Initialize the IWDG MSP
bogdanm 0:9b334a45a8ff 161 (+) DeInitialize IWDG MSP
bogdanm 0:9b334a45a8ff 162
bogdanm 0:9b334a45a8ff 163 @endverbatim
bogdanm 0:9b334a45a8ff 164 * @{
bogdanm 0:9b334a45a8ff 165 */
bogdanm 0:9b334a45a8ff 166
bogdanm 0:9b334a45a8ff 167 /**
bogdanm 0:9b334a45a8ff 168 * @brief Initializes the IWDG according to the specified
bogdanm 0:9b334a45a8ff 169 * parameters in the IWDG_InitTypeDef and creates the associated handle.
bogdanm 0:9b334a45a8ff 170 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 171 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 172 * @retval HAL status
bogdanm 0:9b334a45a8ff 173 */
bogdanm 0:9b334a45a8ff 174 HAL_StatusTypeDef HAL_IWDG_Init(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 175 {
bogdanm 0:9b334a45a8ff 176 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 177
bogdanm 0:9b334a45a8ff 178 /* Check the IWDG handle allocation */
bogdanm 0:9b334a45a8ff 179 if(hiwdg == NULL)
bogdanm 0:9b334a45a8ff 180 {
bogdanm 0:9b334a45a8ff 181 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 182 }
bogdanm 0:9b334a45a8ff 183
bogdanm 0:9b334a45a8ff 184 /* Check the parameters */
bogdanm 0:9b334a45a8ff 185 assert_param(IS_IWDG_PRESCALER(hiwdg->Init.Prescaler));
bogdanm 0:9b334a45a8ff 186 assert_param(IS_IWDG_RELOAD(hiwdg->Init.Reload));
bogdanm 0:9b334a45a8ff 187 assert_param(IS_IWDG_WINDOW(hiwdg->Init.Window));
bogdanm 0:9b334a45a8ff 188
bogdanm 0:9b334a45a8ff 189 /* Check pending flag, if previous update not done, return error */
bogdanm 0:9b334a45a8ff 190 if((__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
bogdanm 0:9b334a45a8ff 191 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 192 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_WVU) != RESET))
bogdanm 0:9b334a45a8ff 193 {
bogdanm 0:9b334a45a8ff 194 return HAL_ERROR;
bogdanm 0:9b334a45a8ff 195 }
bogdanm 0:9b334a45a8ff 196
bogdanm 0:9b334a45a8ff 197 if(hiwdg->State == HAL_IWDG_STATE_RESET)
bogdanm 0:9b334a45a8ff 198 {
bogdanm 0:9b334a45a8ff 199 /* Allocate lock resource and initialize it */
bogdanm 0:9b334a45a8ff 200 hiwdg->Lock = HAL_UNLOCKED;
bogdanm 0:9b334a45a8ff 201
bogdanm 0:9b334a45a8ff 202 /* Init the low level hardware */
bogdanm 0:9b334a45a8ff 203 HAL_IWDG_MspInit(hiwdg);
bogdanm 0:9b334a45a8ff 204 }
bogdanm 0:9b334a45a8ff 205
bogdanm 0:9b334a45a8ff 206 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 207 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 208
bogdanm 0:9b334a45a8ff 209 /* Enable write access to IWDG_PR, IWDG_RLR and IWDG_WINR registers */
mbed_official 83:a036322b8637 210 /* by writing 0x00005555 in KR */
bogdanm 0:9b334a45a8ff 211 IWDG_ENABLE_WRITE_ACCESS(hiwdg);
bogdanm 0:9b334a45a8ff 212
bogdanm 0:9b334a45a8ff 213 /* Write to IWDG registers the IWDG_Prescaler & IWDG_Reload values to work with */
bogdanm 0:9b334a45a8ff 214 MODIFY_REG(hiwdg->Instance->PR, (uint32_t)IWDG_PR_PR, hiwdg->Init.Prescaler);
bogdanm 0:9b334a45a8ff 215 MODIFY_REG(hiwdg->Instance->RLR, (uint32_t)IWDG_RLR_RL, hiwdg->Init.Reload);
bogdanm 0:9b334a45a8ff 216
bogdanm 0:9b334a45a8ff 217 /* check if window option is enabled */
bogdanm 0:9b334a45a8ff 218 if (((hiwdg->Init.Window) != IWDG_WINDOW_DISABLE) || ((hiwdg->Instance->WINR) != IWDG_WINDOW_DISABLE))
bogdanm 0:9b334a45a8ff 219 {
bogdanm 0:9b334a45a8ff 220 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 221
bogdanm 0:9b334a45a8ff 222 /* Wait for register to be updated */
bogdanm 0:9b334a45a8ff 223 while((uint32_t)(hiwdg->Instance->SR) != RESET)
bogdanm 0:9b334a45a8ff 224 {
bogdanm 0:9b334a45a8ff 225 if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 226 {
bogdanm 0:9b334a45a8ff 227 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 228 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 229 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 230 }
bogdanm 0:9b334a45a8ff 231 }
bogdanm 0:9b334a45a8ff 232
bogdanm 0:9b334a45a8ff 233 /* Write to IWDG WINR the IWDG_Window value to compare with */
bogdanm 0:9b334a45a8ff 234 MODIFY_REG(hiwdg->Instance->WINR, (uint32_t)IWDG_WINR_WIN, hiwdg->Init.Window);
bogdanm 0:9b334a45a8ff 235 }
bogdanm 0:9b334a45a8ff 236
bogdanm 0:9b334a45a8ff 237 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 238 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 239
bogdanm 0:9b334a45a8ff 240 /* Return function status */
bogdanm 0:9b334a45a8ff 241 return HAL_OK;
bogdanm 0:9b334a45a8ff 242 }
bogdanm 0:9b334a45a8ff 243
bogdanm 0:9b334a45a8ff 244 /**
bogdanm 0:9b334a45a8ff 245 * @brief Initializes the IWDG MSP.
bogdanm 0:9b334a45a8ff 246 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 247 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 248 * @retval None
bogdanm 0:9b334a45a8ff 249 */
bogdanm 0:9b334a45a8ff 250 __weak void HAL_IWDG_MspInit(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 251 {
mbed_official 83:a036322b8637 252 /* Prevent unused argument(s) compilation warning */
mbed_official 83:a036322b8637 253 UNUSED(hiwdg);
mbed_official 83:a036322b8637 254
bogdanm 0:9b334a45a8ff 255 /* NOTE : This function should not be modified, when the callback is needed,
bogdanm 0:9b334a45a8ff 256 the HAL_IWDG_MspInit could be implemented in the user file
bogdanm 0:9b334a45a8ff 257 */
bogdanm 0:9b334a45a8ff 258 }
bogdanm 0:9b334a45a8ff 259
bogdanm 0:9b334a45a8ff 260 /**
bogdanm 0:9b334a45a8ff 261 * @}
bogdanm 0:9b334a45a8ff 262 */
bogdanm 0:9b334a45a8ff 263
bogdanm 0:9b334a45a8ff 264 /** @defgroup IWDG_Exported_Functions_Group2 IO operation functions
bogdanm 0:9b334a45a8ff 265 * @brief IO operation functions
bogdanm 0:9b334a45a8ff 266 *
bogdanm 0:9b334a45a8ff 267 @verbatim
bogdanm 0:9b334a45a8ff 268 ===============================================================================
bogdanm 0:9b334a45a8ff 269 ##### IO operation functions #####
bogdanm 0:9b334a45a8ff 270 ===============================================================================
bogdanm 0:9b334a45a8ff 271 [..] This section provides functions allowing to:
bogdanm 0:9b334a45a8ff 272 (+) Start the IWDG.
bogdanm 0:9b334a45a8ff 273 (+) Refresh the IWDG.
bogdanm 0:9b334a45a8ff 274
bogdanm 0:9b334a45a8ff 275 @endverbatim
bogdanm 0:9b334a45a8ff 276 * @{
bogdanm 0:9b334a45a8ff 277 */
bogdanm 0:9b334a45a8ff 278
bogdanm 0:9b334a45a8ff 279 /**
bogdanm 0:9b334a45a8ff 280 * @brief Starts the IWDG.
bogdanm 0:9b334a45a8ff 281 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 282 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 283 * @retval HAL status
bogdanm 0:9b334a45a8ff 284 */
bogdanm 0:9b334a45a8ff 285 HAL_StatusTypeDef HAL_IWDG_Start(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 286 {
bogdanm 0:9b334a45a8ff 287 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 288
bogdanm 0:9b334a45a8ff 289 /* Process locked */
bogdanm 0:9b334a45a8ff 290 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 291
bogdanm 0:9b334a45a8ff 292 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 293 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 294
bogdanm 0:9b334a45a8ff 295 /* Reload IWDG counter with value defined in the RLR register */
bogdanm 0:9b334a45a8ff 296 if ((hiwdg->Init.Window) == IWDG_WINDOW_DISABLE)
bogdanm 0:9b334a45a8ff 297 {
bogdanm 0:9b334a45a8ff 298 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 299 }
bogdanm 0:9b334a45a8ff 300
bogdanm 0:9b334a45a8ff 301 /* Start the IWDG peripheral */
bogdanm 0:9b334a45a8ff 302 __HAL_IWDG_START(hiwdg);
bogdanm 0:9b334a45a8ff 303
bogdanm 0:9b334a45a8ff 304 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 305
bogdanm 0:9b334a45a8ff 306 /* Wait until PVU, RVU, WVU flag are RESET */
bogdanm 0:9b334a45a8ff 307 while( (__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_PVU) != RESET)
bogdanm 0:9b334a45a8ff 308 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 309 &&(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_WVU) != RESET) )
bogdanm 0:9b334a45a8ff 310 {
bogdanm 0:9b334a45a8ff 311
bogdanm 0:9b334a45a8ff 312 if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 313 {
bogdanm 0:9b334a45a8ff 314 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 315 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 316
bogdanm 0:9b334a45a8ff 317 /* Process unlocked */
bogdanm 0:9b334a45a8ff 318 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 319
bogdanm 0:9b334a45a8ff 320 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 321 }
bogdanm 0:9b334a45a8ff 322 }
bogdanm 0:9b334a45a8ff 323
bogdanm 0:9b334a45a8ff 324 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 325 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 326
bogdanm 0:9b334a45a8ff 327 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 328 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 329
bogdanm 0:9b334a45a8ff 330 /* Return function status */
bogdanm 0:9b334a45a8ff 331 return HAL_OK;
bogdanm 0:9b334a45a8ff 332 }
bogdanm 0:9b334a45a8ff 333
bogdanm 0:9b334a45a8ff 334 /**
bogdanm 0:9b334a45a8ff 335 * @brief Refreshes the IWDG.
bogdanm 0:9b334a45a8ff 336 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 337 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 338 * @retval HAL status
bogdanm 0:9b334a45a8ff 339 */
bogdanm 0:9b334a45a8ff 340 HAL_StatusTypeDef HAL_IWDG_Refresh(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 341 {
bogdanm 0:9b334a45a8ff 342 uint32_t tickstart = 0;
bogdanm 0:9b334a45a8ff 343
bogdanm 0:9b334a45a8ff 344 /* Process Locked */
bogdanm 0:9b334a45a8ff 345 __HAL_LOCK(hiwdg);
bogdanm 0:9b334a45a8ff 346
bogdanm 0:9b334a45a8ff 347 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 348 hiwdg->State = HAL_IWDG_STATE_BUSY;
bogdanm 0:9b334a45a8ff 349
bogdanm 0:9b334a45a8ff 350 tickstart = HAL_GetTick();
bogdanm 0:9b334a45a8ff 351
bogdanm 0:9b334a45a8ff 352 /* Wait until RVU flag is RESET */
bogdanm 0:9b334a45a8ff 353 while(__HAL_IWDG_GET_FLAG(hiwdg, IWDG_FLAG_RVU) != RESET)
bogdanm 0:9b334a45a8ff 354 {
bogdanm 0:9b334a45a8ff 355 if((HAL_GetTick() - tickstart ) > HAL_IWDG_DEFAULT_TIMEOUT)
bogdanm 0:9b334a45a8ff 356 {
bogdanm 0:9b334a45a8ff 357 /* Set IWDG state */
bogdanm 0:9b334a45a8ff 358 hiwdg->State = HAL_IWDG_STATE_TIMEOUT;
bogdanm 0:9b334a45a8ff 359
bogdanm 0:9b334a45a8ff 360 /* Process unlocked */
bogdanm 0:9b334a45a8ff 361 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 362
bogdanm 0:9b334a45a8ff 363 return HAL_TIMEOUT;
bogdanm 0:9b334a45a8ff 364 }
bogdanm 0:9b334a45a8ff 365 }
bogdanm 0:9b334a45a8ff 366
bogdanm 0:9b334a45a8ff 367 /* Reload IWDG counter with value defined in the reload register */
bogdanm 0:9b334a45a8ff 368 __HAL_IWDG_RELOAD_COUNTER(hiwdg);
bogdanm 0:9b334a45a8ff 369
bogdanm 0:9b334a45a8ff 370 /* Change IWDG peripheral state */
bogdanm 0:9b334a45a8ff 371 hiwdg->State = HAL_IWDG_STATE_READY;
bogdanm 0:9b334a45a8ff 372
bogdanm 0:9b334a45a8ff 373 /* Process Unlocked */
bogdanm 0:9b334a45a8ff 374 __HAL_UNLOCK(hiwdg);
bogdanm 0:9b334a45a8ff 375
bogdanm 0:9b334a45a8ff 376 /* Return function status */
bogdanm 0:9b334a45a8ff 377 return HAL_OK;
bogdanm 0:9b334a45a8ff 378 }
bogdanm 0:9b334a45a8ff 379
bogdanm 0:9b334a45a8ff 380 /**
bogdanm 0:9b334a45a8ff 381 * @}
bogdanm 0:9b334a45a8ff 382 */
bogdanm 0:9b334a45a8ff 383
bogdanm 0:9b334a45a8ff 384 /** @defgroup IWDG_Exported_Functions_Group3 Peripheral State functions
bogdanm 0:9b334a45a8ff 385 * @brief Peripheral State functions.
bogdanm 0:9b334a45a8ff 386 *
bogdanm 0:9b334a45a8ff 387 @verbatim
bogdanm 0:9b334a45a8ff 388 ===============================================================================
bogdanm 0:9b334a45a8ff 389 ##### Peripheral State functions #####
bogdanm 0:9b334a45a8ff 390 ===============================================================================
bogdanm 0:9b334a45a8ff 391 [..]
bogdanm 0:9b334a45a8ff 392 This subsection permits to get in run-time the status of the peripheral.
bogdanm 0:9b334a45a8ff 393
bogdanm 0:9b334a45a8ff 394 @endverbatim
bogdanm 0:9b334a45a8ff 395 * @{
bogdanm 0:9b334a45a8ff 396 */
bogdanm 0:9b334a45a8ff 397
bogdanm 0:9b334a45a8ff 398 /**
bogdanm 0:9b334a45a8ff 399 * @brief Returns the IWDG state.
bogdanm 0:9b334a45a8ff 400 * @param hiwdg: pointer to a IWDG_HandleTypeDef structure that contains
bogdanm 0:9b334a45a8ff 401 * the configuration information for the specified IWDG module.
bogdanm 0:9b334a45a8ff 402 * @retval HAL state
bogdanm 0:9b334a45a8ff 403 */
bogdanm 0:9b334a45a8ff 404 HAL_IWDG_StateTypeDef HAL_IWDG_GetState(IWDG_HandleTypeDef *hiwdg)
bogdanm 0:9b334a45a8ff 405 {
bogdanm 0:9b334a45a8ff 406 return hiwdg->State;
bogdanm 0:9b334a45a8ff 407 }
bogdanm 0:9b334a45a8ff 408
bogdanm 0:9b334a45a8ff 409 /**
bogdanm 0:9b334a45a8ff 410 * @}
bogdanm 0:9b334a45a8ff 411 */
bogdanm 0:9b334a45a8ff 412
bogdanm 0:9b334a45a8ff 413 /**
bogdanm 0:9b334a45a8ff 414 * @}
bogdanm 0:9b334a45a8ff 415 */
bogdanm 0:9b334a45a8ff 416
bogdanm 0:9b334a45a8ff 417 #endif /* HAL_IWDG_MODULE_ENABLED */
bogdanm 0:9b334a45a8ff 418 /**
bogdanm 0:9b334a45a8ff 419 * @}
bogdanm 0:9b334a45a8ff 420 */
bogdanm 0:9b334a45a8ff 421
bogdanm 0:9b334a45a8ff 422 /**
bogdanm 0:9b334a45a8ff 423 * @}
bogdanm 0:9b334a45a8ff 424 */
bogdanm 0:9b334a45a8ff 425
bogdanm 0:9b334a45a8ff 426 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/