Stuart Northfield / mbed-src

mbed library sources

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F4/stm32f4xx_hal_rng.c@384:ef87175507f1, 2014-11-04 (annotated)

Committer:
mbed_official
Date:
Tue Nov 04 09:30:07 2014 +0000
Revision:
384:ef87175507f1
Parent:
380:510f0c3515e3 
Synchronized with git revision 8f7778d898867246da01cfccb39396c2e419c1f6



Full URL: https://github.com/mbedmicro/mbed/commit/8f7778d898867246da01cfccb39396c2e419c1f6/



Targets: Nucleo F4xx - Reorder f4xx structure

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 235:685d5f11838f 1 /**
mbed_official 235:685d5f11838f 2 ******************************************************************************
mbed_official 235:685d5f11838f 3 * @file stm32f4xx_hal_rng.c
mbed_official 235:685d5f11838f 4 * @author MCD Application Team
mbed_official 235:685d5f11838f 5 * @version V1.1.0
mbed_official 235:685d5f11838f 6 * @date 19-June-2014
mbed_official 235:685d5f11838f 7 * @brief RNG HAL module driver.
mbed_official 235:685d5f11838f 8 * This file provides firmware functions to manage the following
mbed_official 235:685d5f11838f 9 * functionalities of the Random Number Generator (RNG) peripheral:
mbed_official 235:685d5f11838f 10 * + Initialization/de-initialization functions
mbed_official 235:685d5f11838f 11 * + Peripheral Control functions
mbed_official 235:685d5f11838f 12 * + Peripheral State functions
mbed_official 235:685d5f11838f 13 *
mbed_official 235:685d5f11838f 14 @verbatim
mbed_official 235:685d5f11838f 15 ==============================================================================
mbed_official 235:685d5f11838f 16 ##### How to use this driver #####
mbed_official 235:685d5f11838f 17 ==============================================================================
mbed_official 235:685d5f11838f 18 [..]
mbed_official 235:685d5f11838f 19 The RNG HAL driver can be used as follows:
mbed_official 235:685d5f11838f 20
mbed_official 235:685d5f11838f 21 (#) Enable the RNG controller clock using __RNG_CLK_ENABLE() macro.
mbed_official 235:685d5f11838f 22 (#) Activate the RNG peripheral using __HAL_RNG_ENABLE() macro.
mbed_official 235:685d5f11838f 23 (#) Wait until the 32 bit Random Number Generator contains a valid
mbed_official 235:685d5f11838f 24 random data using (polling/interrupt) mode.
mbed_official 235:685d5f11838f 25 (#) Get the 32 bit random number using HAL_RNG_GetRandomNumber() function.
mbed_official 235:685d5f11838f 26
mbed_official 235:685d5f11838f 27 @endverbatim
mbed_official 235:685d5f11838f 28 ******************************************************************************
mbed_official 235:685d5f11838f 29 * @attention
mbed_official 235:685d5f11838f 30 *
mbed_official 235:685d5f11838f 31 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 235:685d5f11838f 32 *
mbed_official 235:685d5f11838f 33 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 235:685d5f11838f 34 * are permitted provided that the following conditions are met:
mbed_official 235:685d5f11838f 35 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 235:685d5f11838f 36 * this list of conditions and the following disclaimer.
mbed_official 235:685d5f11838f 37 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 235:685d5f11838f 38 * this list of conditions and the following disclaimer in the documentation
mbed_official 235:685d5f11838f 39 * and/or other materials provided with the distribution.
mbed_official 235:685d5f11838f 40 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 235:685d5f11838f 41 * may be used to endorse or promote products derived from this software
mbed_official 235:685d5f11838f 42 * without specific prior written permission.
mbed_official 235:685d5f11838f 43 *
mbed_official 235:685d5f11838f 44 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 235:685d5f11838f 45 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 235:685d5f11838f 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 235:685d5f11838f 47 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 235:685d5f11838f 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 235:685d5f11838f 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 235:685d5f11838f 50 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 235:685d5f11838f 51 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 235:685d5f11838f 52 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 235:685d5f11838f 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 235:685d5f11838f 54 *
mbed_official 235:685d5f11838f 55 ******************************************************************************
mbed_official 235:685d5f11838f 56 */
mbed_official 235:685d5f11838f 57
mbed_official 235:685d5f11838f 58 /* Includes ------------------------------------------------------------------*/
mbed_official 235:685d5f11838f 59 #include "stm32f4xx_hal.h"
mbed_official 235:685d5f11838f 60
mbed_official 235:685d5f11838f 61 /** @addtogroup STM32F4xx_HAL_Driver
mbed_official 235:685d5f11838f 62 * @{
mbed_official 235:685d5f11838f 63 */
mbed_official 235:685d5f11838f 64
mbed_official 235:685d5f11838f 65 /** @defgroup RNG
mbed_official 235:685d5f11838f 66 * @brief RNG HAL module driver.
mbed_official 235:685d5f11838f 67 * @{
mbed_official 235:685d5f11838f 68 */
mbed_official 235:685d5f11838f 69
mbed_official 235:685d5f11838f 70 #ifdef HAL_RNG_MODULE_ENABLED
mbed_official 235:685d5f11838f 71
mbed_official 235:685d5f11838f 72 #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx) || defined(STM32F417xx) ||\
mbed_official 235:685d5f11838f 73 defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx) || defined(STM32F439xx)
mbed_official 235:685d5f11838f 74
mbed_official 235:685d5f11838f 75 /* Private typedef -----------------------------------------------------------*/
mbed_official 235:685d5f11838f 76 /* Private define ------------------------------------------------------------*/
mbed_official 235:685d5f11838f 77 #define RNG_TIMEOUT_VALUE 1000
mbed_official 235:685d5f11838f 78 /* Private macro -------------------------------------------------------------*/
mbed_official 235:685d5f11838f 79 /* Private variables ---------------------------------------------------------*/
mbed_official 235:685d5f11838f 80 /* Private function prototypes -----------------------------------------------*/
mbed_official 235:685d5f11838f 81 /* Private functions ---------------------------------------------------------*/
mbed_official 235:685d5f11838f 82
mbed_official 235:685d5f11838f 83 /** @defgroup RNG_Private_Functions
mbed_official 235:685d5f11838f 84 * @{
mbed_official 235:685d5f11838f 85 */
mbed_official 235:685d5f11838f 86
mbed_official 235:685d5f11838f 87 /** @defgroup RNG_Group1 Initialization and de-initialization functions
mbed_official 235:685d5f11838f 88 * @brief Initialization and Configuration functions.
mbed_official 235:685d5f11838f 89 *
mbed_official 235:685d5f11838f 90 @verbatim
mbed_official 235:685d5f11838f 91 ===============================================================================
mbed_official 235:685d5f11838f 92 ##### Initialization and de-initialization functions #####
mbed_official 235:685d5f11838f 93 ===============================================================================
mbed_official 235:685d5f11838f 94 [..] This section provides functions allowing to:
mbed_official 235:685d5f11838f 95 (+) Initialize the RNG according to the specified parameters
mbed_official 235:685d5f11838f 96 in the RNG_InitTypeDef and create the associated handle
mbed_official 235:685d5f11838f 97 (+) DeInitialize the RNG peripheral
mbed_official 235:685d5f11838f 98 (+) Initialize the RNG MSP
mbed_official 235:685d5f11838f 99 (+) DeInitialize RNG MSP
mbed_official 235:685d5f11838f 100
mbed_official 235:685d5f11838f 101 @endverbatim
mbed_official 235:685d5f11838f 102 * @{
mbed_official 235:685d5f11838f 103 */
mbed_official 235:685d5f11838f 104
mbed_official 235:685d5f11838f 105 /**
mbed_official 235:685d5f11838f 106 * @brief Initializes the RNG according to the specified
mbed_official 235:685d5f11838f 107 * parameters in the RNG_InitTypeDef and creates the associated handle.
mbed_official 235:685d5f11838f 108 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 109 * the configuration information for RNG.
mbed_official 235:685d5f11838f 110 * @retval HAL status
mbed_official 235:685d5f11838f 111 */
mbed_official 235:685d5f11838f 112 HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 113 {
mbed_official 235:685d5f11838f 114 /* Check the RNG handle allocation */
mbed_official 384:ef87175507f1 115 if(hrng == HAL_NULL)
mbed_official 235:685d5f11838f 116 {
mbed_official 235:685d5f11838f 117 return HAL_ERROR;
mbed_official 235:685d5f11838f 118 }
mbed_official 235:685d5f11838f 119
mbed_official 235:685d5f11838f 120 if(hrng->State == HAL_RNG_STATE_RESET)
mbed_official 235:685d5f11838f 121 {
mbed_official 235:685d5f11838f 122 /* Init the low level hardware */
mbed_official 235:685d5f11838f 123 HAL_RNG_MspInit(hrng);
mbed_official 235:685d5f11838f 124 }
mbed_official 235:685d5f11838f 125 /* Change RNG peripheral state */
mbed_official 235:685d5f11838f 126 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 235:685d5f11838f 127
mbed_official 235:685d5f11838f 128 /* Enable the RNG Peripheral */
mbed_official 235:685d5f11838f 129 __HAL_RNG_ENABLE(hrng);
mbed_official 235:685d5f11838f 130
mbed_official 235:685d5f11838f 131 /* Initialize the RNG state */
mbed_official 235:685d5f11838f 132 hrng->State = HAL_RNG_STATE_READY;
mbed_official 235:685d5f11838f 133
mbed_official 235:685d5f11838f 134 /* Return function status */
mbed_official 235:685d5f11838f 135 return HAL_OK;
mbed_official 235:685d5f11838f 136 }
mbed_official 235:685d5f11838f 137
mbed_official 235:685d5f11838f 138 /**
mbed_official 235:685d5f11838f 139 * @brief DeInitializes the RNG peripheral.
mbed_official 235:685d5f11838f 140 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 141 * the configuration information for RNG.
mbed_official 235:685d5f11838f 142 * @retval HAL status
mbed_official 235:685d5f11838f 143 */
mbed_official 235:685d5f11838f 144 HAL_StatusTypeDef HAL_RNG_DeInit(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 145 {
mbed_official 235:685d5f11838f 146 /* Check the RNG peripheral state */
mbed_official 235:685d5f11838f 147 if(hrng->State == HAL_RNG_STATE_BUSY)
mbed_official 235:685d5f11838f 148 {
mbed_official 235:685d5f11838f 149 return HAL_BUSY;
mbed_official 235:685d5f11838f 150 }
mbed_official 235:685d5f11838f 151
mbed_official 235:685d5f11838f 152 /* Update the RNG state */
mbed_official 235:685d5f11838f 153 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 235:685d5f11838f 154
mbed_official 235:685d5f11838f 155 /* Disable the RNG Peripheral */
mbed_official 235:685d5f11838f 156 __HAL_RNG_DISABLE(hrng);
mbed_official 235:685d5f11838f 157
mbed_official 235:685d5f11838f 158 /* Set the RNG registers to their reset values */
mbed_official 235:685d5f11838f 159 hrng->Instance->CR &= 0xFFFFFFF3;
mbed_official 235:685d5f11838f 160 hrng->Instance->SR &= 0xFFFFFF98;
mbed_official 235:685d5f11838f 161 hrng->Instance->DR &= 0x0;
mbed_official 235:685d5f11838f 162
mbed_official 235:685d5f11838f 163 /* DeInit the low level hardware */
mbed_official 235:685d5f11838f 164 HAL_RNG_MspDeInit(hrng);
mbed_official 235:685d5f11838f 165
mbed_official 235:685d5f11838f 166 /* Update the RNG state */
mbed_official 235:685d5f11838f 167 hrng->State = HAL_RNG_STATE_RESET;
mbed_official 235:685d5f11838f 168
mbed_official 235:685d5f11838f 169 /* Release Lock */
mbed_official 235:685d5f11838f 170 __HAL_UNLOCK(hrng);
mbed_official 235:685d5f11838f 171
mbed_official 235:685d5f11838f 172 /* Return the function status */
mbed_official 235:685d5f11838f 173 return HAL_OK;
mbed_official 235:685d5f11838f 174 }
mbed_official 235:685d5f11838f 175
mbed_official 235:685d5f11838f 176 /**
mbed_official 235:685d5f11838f 177 * @brief Initializes the RNG MSP.
mbed_official 235:685d5f11838f 178 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 179 * the configuration information for RNG.
mbed_official 235:685d5f11838f 180 * @retval None
mbed_official 235:685d5f11838f 181 */
mbed_official 235:685d5f11838f 182 __weak void HAL_RNG_MspInit(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 183 {
mbed_official 235:685d5f11838f 184 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 235:685d5f11838f 185 the HAL_RNG_MspInit could be implemented in the user file
mbed_official 235:685d5f11838f 186 */
mbed_official 235:685d5f11838f 187 }
mbed_official 235:685d5f11838f 188
mbed_official 235:685d5f11838f 189 /**
mbed_official 235:685d5f11838f 190 * @brief DeInitializes the RNG MSP.
mbed_official 235:685d5f11838f 191 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 192 * the configuration information for RNG.
mbed_official 235:685d5f11838f 193 * @retval None
mbed_official 235:685d5f11838f 194 */
mbed_official 235:685d5f11838f 195 __weak void HAL_RNG_MspDeInit(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 196 {
mbed_official 235:685d5f11838f 197 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 235:685d5f11838f 198 the HAL_RNG_MspDeInit could be implemented in the user file
mbed_official 235:685d5f11838f 199 */
mbed_official 235:685d5f11838f 200 }
mbed_official 235:685d5f11838f 201
mbed_official 235:685d5f11838f 202 /**
mbed_official 235:685d5f11838f 203 * @}
mbed_official 235:685d5f11838f 204 */
mbed_official 235:685d5f11838f 205
mbed_official 235:685d5f11838f 206 /** @defgroup RNG_Group2 Peripheral Control functions
mbed_official 235:685d5f11838f 207 * @brief management functions.
mbed_official 235:685d5f11838f 208 *
mbed_official 235:685d5f11838f 209 @verbatim
mbed_official 235:685d5f11838f 210 ===============================================================================
mbed_official 235:685d5f11838f 211 ##### Peripheral Control functions #####
mbed_official 235:685d5f11838f 212 ===============================================================================
mbed_official 235:685d5f11838f 213 [..] This section provides functions allowing to:
mbed_official 235:685d5f11838f 214 (+) Get the 32 bit Random number
mbed_official 235:685d5f11838f 215 (+) Get the 32 bit Random number with interrupt enabled
mbed_official 235:685d5f11838f 216 (+) Handle RNG interrupt request
mbed_official 235:685d5f11838f 217
mbed_official 235:685d5f11838f 218
mbed_official 235:685d5f11838f 219 @endverbatim
mbed_official 235:685d5f11838f 220 * @{
mbed_official 235:685d5f11838f 221 */
mbed_official 235:685d5f11838f 222
mbed_official 235:685d5f11838f 223 /**
mbed_official 235:685d5f11838f 224 * @brief Returns a 32-bit random number.
mbed_official 235:685d5f11838f 225 * @note Each time the random number data is read the RNG_FLAG_DRDY flag
mbed_official 235:685d5f11838f 226 * is automatically cleared.
mbed_official 235:685d5f11838f 227 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 228 * the configuration information for RNG.
mbed_official 235:685d5f11838f 229 * @retval 32-bit random number
mbed_official 235:685d5f11838f 230 */
mbed_official 235:685d5f11838f 231 uint32_t HAL_RNG_GetRandomNumber(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 232 {
mbed_official 235:685d5f11838f 233 uint32_t random32bit = 0;
mbed_official 235:685d5f11838f 234 uint32_t tickstart = 0;
mbed_official 235:685d5f11838f 235
mbed_official 235:685d5f11838f 236 /* Process Locked */
mbed_official 235:685d5f11838f 237 __HAL_LOCK(hrng);
mbed_official 235:685d5f11838f 238
mbed_official 235:685d5f11838f 239 /* Get tick */
mbed_official 235:685d5f11838f 240 tickstart = HAL_GetTick();
mbed_official 235:685d5f11838f 241
mbed_official 235:685d5f11838f 242 /* Check if data register contains valid random data */
mbed_official 235:685d5f11838f 243 while(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) == RESET)
mbed_official 235:685d5f11838f 244 {
mbed_official 235:685d5f11838f 245 if((HAL_GetTick() - tickstart ) > RNG_TIMEOUT_VALUE)
mbed_official 235:685d5f11838f 246 {
mbed_official 235:685d5f11838f 247 return HAL_TIMEOUT;
mbed_official 235:685d5f11838f 248 }
mbed_official 235:685d5f11838f 249 }
mbed_official 235:685d5f11838f 250
mbed_official 235:685d5f11838f 251 /* Get a 32bit Random number */
mbed_official 235:685d5f11838f 252 random32bit = hrng->Instance->DR;
mbed_official 235:685d5f11838f 253
mbed_official 235:685d5f11838f 254 /* Process Unlocked */
mbed_official 235:685d5f11838f 255 __HAL_UNLOCK(hrng);
mbed_official 235:685d5f11838f 256
mbed_official 235:685d5f11838f 257 /* Return the 32 bit random number */
mbed_official 235:685d5f11838f 258 return random32bit;
mbed_official 235:685d5f11838f 259 }
mbed_official 235:685d5f11838f 260
mbed_official 235:685d5f11838f 261 /**
mbed_official 235:685d5f11838f 262 * @brief Returns a 32-bit random number with interrupt enabled.
mbed_official 235:685d5f11838f 263 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 264 * the configuration information for RNG.
mbed_official 235:685d5f11838f 265 * @retval 32-bit random number
mbed_official 235:685d5f11838f 266 */
mbed_official 235:685d5f11838f 267 uint32_t HAL_RNG_GetRandomNumber_IT(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 268 {
mbed_official 235:685d5f11838f 269 uint32_t random32bit = 0;
mbed_official 235:685d5f11838f 270
mbed_official 235:685d5f11838f 271 /* Process Locked */
mbed_official 235:685d5f11838f 272 __HAL_LOCK(hrng);
mbed_official 235:685d5f11838f 273
mbed_official 235:685d5f11838f 274 /* Change RNG peripheral state */
mbed_official 235:685d5f11838f 275 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 235:685d5f11838f 276
mbed_official 235:685d5f11838f 277 /* Get a 32bit Random number */
mbed_official 235:685d5f11838f 278 random32bit = hrng->Instance->DR;
mbed_official 235:685d5f11838f 279
mbed_official 235:685d5f11838f 280 /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */
mbed_official 235:685d5f11838f 281 __HAL_RNG_ENABLE_IT(hrng);
mbed_official 235:685d5f11838f 282
mbed_official 235:685d5f11838f 283 /* Return the 32 bit random number */
mbed_official 235:685d5f11838f 284 return random32bit;
mbed_official 235:685d5f11838f 285 }
mbed_official 235:685d5f11838f 286
mbed_official 235:685d5f11838f 287 /**
mbed_official 235:685d5f11838f 288 * @brief Handles RNG interrupt request.
mbed_official 235:685d5f11838f 289 * @note In the case of a clock error, the RNG is no more able to generate
mbed_official 235:685d5f11838f 290 * random numbers because the PLL48CLK clock is not correct. User has
mbed_official 235:685d5f11838f 291 * to check that the clock controller is correctly configured to provide
mbed_official 235:685d5f11838f 292 * the RNG clock and clear the CEIS bit using __HAL_RNG_CLEAR_FLAG().
mbed_official 235:685d5f11838f 293 * The clock error has no impact on the previously generated
mbed_official 235:685d5f11838f 294 * random numbers, and the RNG_DR register contents can be used.
mbed_official 235:685d5f11838f 295 * @note In the case of a seed error, the generation of random numbers is
mbed_official 235:685d5f11838f 296 * interrupted as long as the SECS bit is '1'. If a number is
mbed_official 235:685d5f11838f 297 * available in the RNG_DR register, it must not be used because it may
mbed_official 235:685d5f11838f 298 * not have enough entropy. In this case, it is recommended to clear the
mbed_official 235:685d5f11838f 299 * SEIS bit using __HAL_RNG_CLEAR_FLAG(), then disable and enable
mbed_official 235:685d5f11838f 300 * the RNG peripheral to reinitialize and restart the RNG.
mbed_official 235:685d5f11838f 301 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 302 * the configuration information for RNG.
mbed_official 235:685d5f11838f 303 * @retval None
mbed_official 235:685d5f11838f 304
mbed_official 235:685d5f11838f 305 */
mbed_official 235:685d5f11838f 306 void HAL_RNG_IRQHandler(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 307 {
mbed_official 235:685d5f11838f 308 /* RNG clock error interrupt occurred */
mbed_official 235:685d5f11838f 309 if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_CEI) != RESET)
mbed_official 235:685d5f11838f 310 {
mbed_official 235:685d5f11838f 311 HAL_RNG_ErrorCallback(hrng);
mbed_official 235:685d5f11838f 312
mbed_official 235:685d5f11838f 313 /* Clear the clock error flag */
mbed_official 235:685d5f11838f 314 __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_CEI);
mbed_official 235:685d5f11838f 315
mbed_official 235:685d5f11838f 316 /* Change RNG peripheral state */
mbed_official 235:685d5f11838f 317 hrng->State = HAL_RNG_STATE_ERROR;
mbed_official 235:685d5f11838f 318
mbed_official 235:685d5f11838f 319 /* Process Unlocked */
mbed_official 235:685d5f11838f 320 __HAL_UNLOCK(hrng);
mbed_official 235:685d5f11838f 321 }
mbed_official 235:685d5f11838f 322
mbed_official 235:685d5f11838f 323 /* RNG seed error interrupt occurred */
mbed_official 235:685d5f11838f 324 if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_SEI) != RESET)
mbed_official 235:685d5f11838f 325 {
mbed_official 235:685d5f11838f 326 HAL_RNG_ErrorCallback(hrng);
mbed_official 235:685d5f11838f 327
mbed_official 235:685d5f11838f 328 /* Clear the seed error flag */
mbed_official 235:685d5f11838f 329 __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_SEI);
mbed_official 235:685d5f11838f 330
mbed_official 235:685d5f11838f 331 /* Change RNG peripheral state */
mbed_official 235:685d5f11838f 332 hrng->State = HAL_RNG_STATE_ERROR;
mbed_official 235:685d5f11838f 333
mbed_official 235:685d5f11838f 334 /* Process Unlocked */
mbed_official 235:685d5f11838f 335 __HAL_UNLOCK(hrng);
mbed_official 235:685d5f11838f 336 }
mbed_official 235:685d5f11838f 337
mbed_official 235:685d5f11838f 338 /* Check RNG data ready flag */
mbed_official 235:685d5f11838f 339 if(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) != RESET)
mbed_official 235:685d5f11838f 340 {
mbed_official 235:685d5f11838f 341 /* Data Ready callback */
mbed_official 235:685d5f11838f 342 HAL_RNG_ReadyCallback(hrng);
mbed_official 235:685d5f11838f 343
mbed_official 235:685d5f11838f 344 /* Change RNG peripheral state */
mbed_official 235:685d5f11838f 345 hrng->State = HAL_RNG_STATE_READY;
mbed_official 235:685d5f11838f 346
mbed_official 235:685d5f11838f 347 /* Clear the RNG Data Ready flag */
mbed_official 235:685d5f11838f 348 __HAL_RNG_CLEAR_FLAG(hrng, RNG_FLAG_DRDY);
mbed_official 235:685d5f11838f 349
mbed_official 235:685d5f11838f 350 /* Process Unlocked */
mbed_official 235:685d5f11838f 351 __HAL_UNLOCK(hrng);
mbed_official 235:685d5f11838f 352 }
mbed_official 235:685d5f11838f 353 }
mbed_official 235:685d5f11838f 354
mbed_official 235:685d5f11838f 355 /**
mbed_official 235:685d5f11838f 356 * @brief Data Ready callback in non-blocking mode.
mbed_official 235:685d5f11838f 357 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 358 * the configuration information for RNG.
mbed_official 235:685d5f11838f 359 * @retval None
mbed_official 235:685d5f11838f 360 */
mbed_official 235:685d5f11838f 361
mbed_official 235:685d5f11838f 362 __weak void HAL_RNG_ReadyCallback(RNG_HandleTypeDef* hrng)
mbed_official 235:685d5f11838f 363 {
mbed_official 235:685d5f11838f 364 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 235:685d5f11838f 365 the HAL_RNG_ReadyCallback could be implemented in the user file
mbed_official 235:685d5f11838f 366 */
mbed_official 235:685d5f11838f 367 }
mbed_official 235:685d5f11838f 368
mbed_official 235:685d5f11838f 369 /**
mbed_official 235:685d5f11838f 370 * @brief RNG error callbacks.
mbed_official 235:685d5f11838f 371 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 372 * the configuration information for RNG.
mbed_official 235:685d5f11838f 373 * @retval None
mbed_official 235:685d5f11838f 374 */
mbed_official 235:685d5f11838f 375 __weak void HAL_RNG_ErrorCallback(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 376 {
mbed_official 235:685d5f11838f 377 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 235:685d5f11838f 378 the HAL_RNG_ErrorCallback could be implemented in the user file
mbed_official 235:685d5f11838f 379 */
mbed_official 235:685d5f11838f 380 }
mbed_official 235:685d5f11838f 381
mbed_official 235:685d5f11838f 382 /**
mbed_official 235:685d5f11838f 383 * @}
mbed_official 235:685d5f11838f 384 */
mbed_official 235:685d5f11838f 385
mbed_official 235:685d5f11838f 386 /** @defgroup RNG_Group3 Peripheral State functions
mbed_official 235:685d5f11838f 387 * @brief Peripheral State functions.
mbed_official 235:685d5f11838f 388 *
mbed_official 235:685d5f11838f 389 @verbatim
mbed_official 235:685d5f11838f 390 ===============================================================================
mbed_official 235:685d5f11838f 391 ##### Peripheral State functions #####
mbed_official 235:685d5f11838f 392 ===============================================================================
mbed_official 235:685d5f11838f 393 [..]
mbed_official 235:685d5f11838f 394 This subsection permits to get in run-time the status of the peripheral
mbed_official 235:685d5f11838f 395 and the data flow.
mbed_official 235:685d5f11838f 396
mbed_official 235:685d5f11838f 397 @endverbatim
mbed_official 235:685d5f11838f 398 * @{
mbed_official 235:685d5f11838f 399 */
mbed_official 235:685d5f11838f 400
mbed_official 235:685d5f11838f 401 /**
mbed_official 235:685d5f11838f 402 * @brief Returns the RNG state.
mbed_official 235:685d5f11838f 403 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 235:685d5f11838f 404 * the configuration information for RNG.
mbed_official 235:685d5f11838f 405 * @retval HAL state
mbed_official 235:685d5f11838f 406 */
mbed_official 235:685d5f11838f 407 HAL_RNG_StateTypeDef HAL_RNG_GetState(RNG_HandleTypeDef *hrng)
mbed_official 235:685d5f11838f 408 {
mbed_official 235:685d5f11838f 409 return hrng->State;
mbed_official 235:685d5f11838f 410 }
mbed_official 235:685d5f11838f 411
mbed_official 235:685d5f11838f 412 /**
mbed_official 235:685d5f11838f 413 * @}
mbed_official 235:685d5f11838f 414 */
mbed_official 235:685d5f11838f 415
mbed_official 235:685d5f11838f 416 /**
mbed_official 235:685d5f11838f 417 * @}
mbed_official 235:685d5f11838f 418 */
mbed_official 235:685d5f11838f 419
mbed_official 235:685d5f11838f 420 #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx */
mbed_official 235:685d5f11838f 421
mbed_official 235:685d5f11838f 422 #endif /* HAL_RNG_MODULE_ENABLED */
mbed_official 235:685d5f11838f 423 /**
mbed_official 235:685d5f11838f 424 * @}
mbed_official 235:685d5f11838f 425 */
mbed_official 235:685d5f11838f 426
mbed_official 235:685d5f11838f 427 /**
mbed_official 235:685d5f11838f 428 * @}
mbed_official 235:685d5f11838f 429 */
mbed_official 235:685d5f11838f 430
mbed_official 235:685d5f11838f 431 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/