lzbp li / mbed-stm32l0l1-src-1

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of mbed-stm32l0/l1-src by lzbp li

targets/cmsis/TARGET_STM/TARGET_DISCO_L053C8/stm32l0xx_hal_rng.c@376:cb4d9db17537, 2014-10-31 (annotated)

Committer:
mbed_official
Date:
Fri Oct 31 11:00:10 2014 +0000
Revision:
376:cb4d9db17537
Synchronized with git revision 07b49da75eac883fc8916d3d6b6962664b8db29e



Full URL: https://github.com/mbedmicro/mbed/commit/07b49da75eac883fc8916d3d6b6962664b8db29e/



Targets: DISCO_L053C8 - new platform - STM32L0 Discovery board

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 376:cb4d9db17537 1 /**
mbed_official 376:cb4d9db17537 2 ******************************************************************************
mbed_official 376:cb4d9db17537 3 * @file stm32l0xx_hal_rng.c
mbed_official 376:cb4d9db17537 4 * @author MCD Application Team
mbed_official 376:cb4d9db17537 5 * @version V1.1.0
mbed_official 376:cb4d9db17537 6 * @date 18-June-2014
mbed_official 376:cb4d9db17537 7 * @brief RNG HAL module driver.
mbed_official 376:cb4d9db17537 8 * This file provides firmware functions to manage the following
mbed_official 376:cb4d9db17537 9 * functionalities of the Random Number Generator (RNG) peripheral:
mbed_official 376:cb4d9db17537 10 * + Initialization/de-initialization functions
mbed_official 376:cb4d9db17537 11 * + Peripheral Control functions
mbed_official 376:cb4d9db17537 12 * + Peripheral State functions
mbed_official 376:cb4d9db17537 13 *
mbed_official 376:cb4d9db17537 14 @verbatim
mbed_official 376:cb4d9db17537 15 ==============================================================================
mbed_official 376:cb4d9db17537 16 ##### How to use this driver #####
mbed_official 376:cb4d9db17537 17 ==============================================================================
mbed_official 376:cb4d9db17537 18 [..]
mbed_official 376:cb4d9db17537 19 The RNG HAL driver can be used as follows:
mbed_official 376:cb4d9db17537 20
mbed_official 376:cb4d9db17537 21 (#) Enable the RNG controller clock using __RNG_CLK_ENABLE() macro.
mbed_official 376:cb4d9db17537 22 (#) Activate the RNG peripheral using __HAL_RNG_ENABLE() macro.
mbed_official 376:cb4d9db17537 23 (#) Wait until the 32 bit Random Number Generator contains a valid
mbed_official 376:cb4d9db17537 24 random data using (polling/interrupt) mode.
mbed_official 376:cb4d9db17537 25 (#) Get the 32 bit random number using HAL_RNG_GetRandomNumber() function.
mbed_official 376:cb4d9db17537 26
mbed_official 376:cb4d9db17537 27 @endverbatim
mbed_official 376:cb4d9db17537 28 ******************************************************************************
mbed_official 376:cb4d9db17537 29 * @attention
mbed_official 376:cb4d9db17537 30 *
mbed_official 376:cb4d9db17537 31 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 376:cb4d9db17537 32 *
mbed_official 376:cb4d9db17537 33 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 376:cb4d9db17537 34 * are permitted provided that the following conditions are met:
mbed_official 376:cb4d9db17537 35 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 376:cb4d9db17537 36 * this list of conditions and the following disclaimer.
mbed_official 376:cb4d9db17537 37 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 376:cb4d9db17537 38 * this list of conditions and the following disclaimer in the documentation
mbed_official 376:cb4d9db17537 39 * and/or other materials provided with the distribution.
mbed_official 376:cb4d9db17537 40 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 376:cb4d9db17537 41 * may be used to endorse or promote products derived from this software
mbed_official 376:cb4d9db17537 42 * without specific prior written permission.
mbed_official 376:cb4d9db17537 43 *
mbed_official 376:cb4d9db17537 44 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 376:cb4d9db17537 45 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 376:cb4d9db17537 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 376:cb4d9db17537 47 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 376:cb4d9db17537 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 376:cb4d9db17537 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 376:cb4d9db17537 50 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 376:cb4d9db17537 51 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 376:cb4d9db17537 52 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 376:cb4d9db17537 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 376:cb4d9db17537 54 *
mbed_official 376:cb4d9db17537 55 ******************************************************************************
mbed_official 376:cb4d9db17537 56 */
mbed_official 376:cb4d9db17537 57
mbed_official 376:cb4d9db17537 58 /* Includes ------------------------------------------------------------------*/
mbed_official 376:cb4d9db17537 59 #include "stm32l0xx_hal.h"
mbed_official 376:cb4d9db17537 60
mbed_official 376:cb4d9db17537 61 /** @addtogroup STM32L0xx_HAL_Driver
mbed_official 376:cb4d9db17537 62 * @{
mbed_official 376:cb4d9db17537 63 */
mbed_official 376:cb4d9db17537 64
mbed_official 376:cb4d9db17537 65 /** @defgroup RNG
mbed_official 376:cb4d9db17537 66 * @brief RNG HAL module driver.
mbed_official 376:cb4d9db17537 67 * @{
mbed_official 376:cb4d9db17537 68 */
mbed_official 376:cb4d9db17537 69
mbed_official 376:cb4d9db17537 70 #ifdef HAL_RNG_MODULE_ENABLED
mbed_official 376:cb4d9db17537 71 #if !defined (STM32L051xx) && !defined (STM32L061xx)
mbed_official 376:cb4d9db17537 72
mbed_official 376:cb4d9db17537 73 /* Private typedef -----------------------------------------------------------*/
mbed_official 376:cb4d9db17537 74 /* Private define ------------------------------------------------------------*/
mbed_official 376:cb4d9db17537 75 #define RNG_TIMEOUT_VALUE 1000
mbed_official 376:cb4d9db17537 76 /* Private macro -------------------------------------------------------------*/
mbed_official 376:cb4d9db17537 77 /* Private variables ---------------------------------------------------------*/
mbed_official 376:cb4d9db17537 78 /* Private function prototypes -----------------------------------------------*/
mbed_official 376:cb4d9db17537 79 /* Private functions ---------------------------------------------------------*/
mbed_official 376:cb4d9db17537 80
mbed_official 376:cb4d9db17537 81 /** @defgroup RNG_Private_Functions
mbed_official 376:cb4d9db17537 82 * @{
mbed_official 376:cb4d9db17537 83 */
mbed_official 376:cb4d9db17537 84
mbed_official 376:cb4d9db17537 85 /** @defgroup RNG_Group1 Initialization and de-initialization functions
mbed_official 376:cb4d9db17537 86 * @brief Initialization and Configuration functions.
mbed_official 376:cb4d9db17537 87 *
mbed_official 376:cb4d9db17537 88 @verbatim
mbed_official 376:cb4d9db17537 89 ===============================================================================
mbed_official 376:cb4d9db17537 90 ##### Initialization and de-initialization functions #####
mbed_official 376:cb4d9db17537 91 ===============================================================================
mbed_official 376:cb4d9db17537 92 [..] This section provides functions allowing to:
mbed_official 376:cb4d9db17537 93 (+) Initialize the RNG according to the specified parameters
mbed_official 376:cb4d9db17537 94 in the RNG_InitTypeDef and create the associated handle
mbed_official 376:cb4d9db17537 95 (+) DeInitialize the RNG peripheral
mbed_official 376:cb4d9db17537 96 (+) Initialize the RNG MSP
mbed_official 376:cb4d9db17537 97 (+) DeInitialize RNG MSP
mbed_official 376:cb4d9db17537 98
mbed_official 376:cb4d9db17537 99 @endverbatim
mbed_official 376:cb4d9db17537 100 * @{
mbed_official 376:cb4d9db17537 101 */
mbed_official 376:cb4d9db17537 102
mbed_official 376:cb4d9db17537 103 /**
mbed_official 376:cb4d9db17537 104 * @brief Initializes the RNG according to the specified
mbed_official 376:cb4d9db17537 105 * parameters in the RNG_InitTypeDef and creates the associated handle.
mbed_official 376:cb4d9db17537 106 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 107 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 108 * @retval HAL status
mbed_official 376:cb4d9db17537 109 */
mbed_official 376:cb4d9db17537 110 HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 111 {
mbed_official 376:cb4d9db17537 112 /* Check the RNG handle allocation */
mbed_official 376:cb4d9db17537 113 if(hrng == NULL)
mbed_official 376:cb4d9db17537 114 {
mbed_official 376:cb4d9db17537 115 return HAL_ERROR;
mbed_official 376:cb4d9db17537 116 }
mbed_official 376:cb4d9db17537 117
mbed_official 376:cb4d9db17537 118 if(hrng->State == HAL_RNG_STATE_RESET)
mbed_official 376:cb4d9db17537 119 {
mbed_official 376:cb4d9db17537 120 /* Init the low level hardware */
mbed_official 376:cb4d9db17537 121 HAL_RNG_MspInit(hrng);
mbed_official 376:cb4d9db17537 122 }
mbed_official 376:cb4d9db17537 123
mbed_official 376:cb4d9db17537 124 /* Change RNG peripheral state */
mbed_official 376:cb4d9db17537 125 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 376:cb4d9db17537 126
mbed_official 376:cb4d9db17537 127 /* Enable the RNG Peripheral */
mbed_official 376:cb4d9db17537 128 __HAL_RNG_ENABLE(hrng);
mbed_official 376:cb4d9db17537 129
mbed_official 376:cb4d9db17537 130 /* Initialize the RNG state */
mbed_official 376:cb4d9db17537 131 hrng->State = HAL_RNG_STATE_READY;
mbed_official 376:cb4d9db17537 132
mbed_official 376:cb4d9db17537 133 /* Return function status */
mbed_official 376:cb4d9db17537 134 return HAL_OK;
mbed_official 376:cb4d9db17537 135 }
mbed_official 376:cb4d9db17537 136
mbed_official 376:cb4d9db17537 137 /**
mbed_official 376:cb4d9db17537 138 * @brief DeInitializes the RNG peripheral.
mbed_official 376:cb4d9db17537 139 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 140 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 141 * @retval HAL status
mbed_official 376:cb4d9db17537 142 */
mbed_official 376:cb4d9db17537 143 HAL_StatusTypeDef HAL_RNG_DeInit(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 144 {
mbed_official 376:cb4d9db17537 145 /* Check the RNG peripheral state */
mbed_official 376:cb4d9db17537 146 if(hrng->State == HAL_RNG_STATE_BUSY)
mbed_official 376:cb4d9db17537 147 {
mbed_official 376:cb4d9db17537 148 return HAL_BUSY;
mbed_official 376:cb4d9db17537 149 }
mbed_official 376:cb4d9db17537 150
mbed_official 376:cb4d9db17537 151 /* Update the RNG state */
mbed_official 376:cb4d9db17537 152 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 376:cb4d9db17537 153
mbed_official 376:cb4d9db17537 154 /* Disable the RNG Peripheral */
mbed_official 376:cb4d9db17537 155 __HAL_RNG_DISABLE(hrng);
mbed_official 376:cb4d9db17537 156
mbed_official 376:cb4d9db17537 157 /* Set the RNG registers to their reset values */
mbed_official 376:cb4d9db17537 158 hrng->Instance->CR &= 0xFFFFFFF3;
mbed_official 376:cb4d9db17537 159 hrng->Instance->SR &= 0xFFFFFF98;
mbed_official 376:cb4d9db17537 160 hrng->Instance->DR &= 0x0;
mbed_official 376:cb4d9db17537 161
mbed_official 376:cb4d9db17537 162 /* DeInit the low level hardware */
mbed_official 376:cb4d9db17537 163 HAL_RNG_MspDeInit(hrng);
mbed_official 376:cb4d9db17537 164
mbed_official 376:cb4d9db17537 165 /* Update the RNG state */
mbed_official 376:cb4d9db17537 166 hrng->State = HAL_RNG_STATE_RESET;
mbed_official 376:cb4d9db17537 167
mbed_official 376:cb4d9db17537 168 /* Release Lock */
mbed_official 376:cb4d9db17537 169 __HAL_UNLOCK(hrng);
mbed_official 376:cb4d9db17537 170
mbed_official 376:cb4d9db17537 171 /* Return the function status */
mbed_official 376:cb4d9db17537 172 return HAL_OK;
mbed_official 376:cb4d9db17537 173 }
mbed_official 376:cb4d9db17537 174
mbed_official 376:cb4d9db17537 175 /**
mbed_official 376:cb4d9db17537 176 * @brief Initializes the RNG MSP.
mbed_official 376:cb4d9db17537 177 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 178 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 179 * @retval None
mbed_official 376:cb4d9db17537 180 */
mbed_official 376:cb4d9db17537 181 __weak void HAL_RNG_MspInit(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 182 {
mbed_official 376:cb4d9db17537 183 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 376:cb4d9db17537 184 the HAL_RNG_MspInit could be implemented in the user file
mbed_official 376:cb4d9db17537 185 */
mbed_official 376:cb4d9db17537 186 }
mbed_official 376:cb4d9db17537 187
mbed_official 376:cb4d9db17537 188 /**
mbed_official 376:cb4d9db17537 189 * @brief DeInitializes the RNG MSP.
mbed_official 376:cb4d9db17537 190 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 191 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 192 * @retval None
mbed_official 376:cb4d9db17537 193 */
mbed_official 376:cb4d9db17537 194 __weak void HAL_RNG_MspDeInit(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 195 {
mbed_official 376:cb4d9db17537 196 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 376:cb4d9db17537 197 the HAL_RNG_MspDeInit could be implemented in the user file
mbed_official 376:cb4d9db17537 198 */
mbed_official 376:cb4d9db17537 199 }
mbed_official 376:cb4d9db17537 200
mbed_official 376:cb4d9db17537 201 /**
mbed_official 376:cb4d9db17537 202 * @}
mbed_official 376:cb4d9db17537 203 */
mbed_official 376:cb4d9db17537 204
mbed_official 376:cb4d9db17537 205 /** @defgroup RNG_Group2 Peripheral Control functions
mbed_official 376:cb4d9db17537 206 * @brief management functions.
mbed_official 376:cb4d9db17537 207 *
mbed_official 376:cb4d9db17537 208 @verbatim
mbed_official 376:cb4d9db17537 209 ===============================================================================
mbed_official 376:cb4d9db17537 210 ##### Peripheral Control functions #####
mbed_official 376:cb4d9db17537 211 ===============================================================================
mbed_official 376:cb4d9db17537 212 [..] This section provides functions allowing to:
mbed_official 376:cb4d9db17537 213 (+) Get the 32 bit Random number
mbed_official 376:cb4d9db17537 214 (+) Get the 32 bit Random number with interrupt enabled
mbed_official 376:cb4d9db17537 215 (+) Handle RNG interrupt request
mbed_official 376:cb4d9db17537 216
mbed_official 376:cb4d9db17537 217
mbed_official 376:cb4d9db17537 218 @endverbatim
mbed_official 376:cb4d9db17537 219 * @{
mbed_official 376:cb4d9db17537 220 */
mbed_official 376:cb4d9db17537 221
mbed_official 376:cb4d9db17537 222 /**
mbed_official 376:cb4d9db17537 223 * @brief Returns a 32-bit random number.
mbed_official 376:cb4d9db17537 224 * @note Each time the random number data is read the RNG_FLAG_DRDY flag
mbed_official 376:cb4d9db17537 225 * is automatically cleared.
mbed_official 376:cb4d9db17537 226 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 227 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 228 * @retval 32-bit random number
mbed_official 376:cb4d9db17537 229 */
mbed_official 376:cb4d9db17537 230 uint32_t HAL_RNG_GetRandomNumber(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 231 {
mbed_official 376:cb4d9db17537 232 uint32_t random32bit = 0;
mbed_official 376:cb4d9db17537 233 uint32_t tickstart = 0;
mbed_official 376:cb4d9db17537 234
mbed_official 376:cb4d9db17537 235 /* Process Locked */
mbed_official 376:cb4d9db17537 236 __HAL_LOCK(hrng);
mbed_official 376:cb4d9db17537 237
mbed_official 376:cb4d9db17537 238 /* Get timeout */
mbed_official 376:cb4d9db17537 239 tickstart = HAL_GetTick();
mbed_official 376:cb4d9db17537 240
mbed_official 376:cb4d9db17537 241 /* Check if data register contains valid random data */
mbed_official 376:cb4d9db17537 242 while(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) == RESET)
mbed_official 376:cb4d9db17537 243 {
mbed_official 376:cb4d9db17537 244 if((HAL_GetTick() - tickstart ) > RNG_TIMEOUT_VALUE)
mbed_official 376:cb4d9db17537 245 {
mbed_official 376:cb4d9db17537 246 return HAL_TIMEOUT;
mbed_official 376:cb4d9db17537 247 }
mbed_official 376:cb4d9db17537 248 }
mbed_official 376:cb4d9db17537 249
mbed_official 376:cb4d9db17537 250 /* Get a 32bit Random number */
mbed_official 376:cb4d9db17537 251 random32bit = hrng->Instance->DR;
mbed_official 376:cb4d9db17537 252
mbed_official 376:cb4d9db17537 253 /* Process Unlocked */
mbed_official 376:cb4d9db17537 254 __HAL_UNLOCK(hrng);
mbed_official 376:cb4d9db17537 255
mbed_official 376:cb4d9db17537 256 /* Return the 32 bit random number */
mbed_official 376:cb4d9db17537 257 return random32bit;
mbed_official 376:cb4d9db17537 258 }
mbed_official 376:cb4d9db17537 259
mbed_official 376:cb4d9db17537 260 /**
mbed_official 376:cb4d9db17537 261 * @brief Returns a 32-bit random number with interrupt enabled.
mbed_official 376:cb4d9db17537 262 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 263 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 264 * @retval 32-bit random number
mbed_official 376:cb4d9db17537 265 */
mbed_official 376:cb4d9db17537 266 uint32_t HAL_RNG_GetRandomNumber_IT(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 267 {
mbed_official 376:cb4d9db17537 268 uint32_t random32bit = 0;
mbed_official 376:cb4d9db17537 269
mbed_official 376:cb4d9db17537 270 /* Process Locked */
mbed_official 376:cb4d9db17537 271 __HAL_LOCK(hrng);
mbed_official 376:cb4d9db17537 272
mbed_official 376:cb4d9db17537 273 /* Change RNG peripheral state */
mbed_official 376:cb4d9db17537 274 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 376:cb4d9db17537 275
mbed_official 376:cb4d9db17537 276 /* Get a 32bit Random number */
mbed_official 376:cb4d9db17537 277 random32bit = hrng->Instance->DR;
mbed_official 376:cb4d9db17537 278
mbed_official 376:cb4d9db17537 279 /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */
mbed_official 376:cb4d9db17537 280 __HAL_RNG_ENABLE_IT(hrng);
mbed_official 376:cb4d9db17537 281
mbed_official 376:cb4d9db17537 282 /* Return the 32 bit random number */
mbed_official 376:cb4d9db17537 283 return random32bit;
mbed_official 376:cb4d9db17537 284 }
mbed_official 376:cb4d9db17537 285
mbed_official 376:cb4d9db17537 286 /**
mbed_official 376:cb4d9db17537 287 * @brief Handles RNG interrupt request.
mbed_official 376:cb4d9db17537 288 * @note In the case of a clock error, the RNG is no more able to generate
mbed_official 376:cb4d9db17537 289 * random numbers because the PLL48CLK clock is not correct. User has
mbed_official 376:cb4d9db17537 290 * to check that the clock controller is correctly configured to provide
mbed_official 376:cb4d9db17537 291 * the RNG clock and clear the CEIS bit using __HAL_RNG_CLEAR_FLAG().
mbed_official 376:cb4d9db17537 292 * The clock error has no impact on the previously generated
mbed_official 376:cb4d9db17537 293 * random numbers, and the RNG_DR register contents can be used.
mbed_official 376:cb4d9db17537 294 * @note In the case of a seed error, the generation of random numbers is
mbed_official 376:cb4d9db17537 295 * interrupted as long as the SECS bit is '1'. If a number is
mbed_official 376:cb4d9db17537 296 * available in the RNG_DR register, it must not be used because it may
mbed_official 376:cb4d9db17537 297 * not have enough entropy. In this case, it is recommended to clear the
mbed_official 376:cb4d9db17537 298 * SEIS bit using __HAL_RNG_CLEAR_FLAG(), then disable and enable
mbed_official 376:cb4d9db17537 299 * the RNG peripheral to reinitialize and restart the RNG.
mbed_official 376:cb4d9db17537 300 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 301 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 302 * @retval None
mbed_official 376:cb4d9db17537 303
mbed_official 376:cb4d9db17537 304 */
mbed_official 376:cb4d9db17537 305 void HAL_RNG_IRQHandler(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 306 {
mbed_official 376:cb4d9db17537 307 /* RNG clock error interrupt occurred */
mbed_official 376:cb4d9db17537 308 if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_CEI) != RESET)
mbed_official 376:cb4d9db17537 309 {
mbed_official 376:cb4d9db17537 310 HAL_RNG_ErrorCallback(hrng);
mbed_official 376:cb4d9db17537 311
mbed_official 376:cb4d9db17537 312 /* Clear the clock error flag */
mbed_official 376:cb4d9db17537 313 __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_CEI);
mbed_official 376:cb4d9db17537 314
mbed_official 376:cb4d9db17537 315 /* Change RNG peripheral state */
mbed_official 376:cb4d9db17537 316 hrng->State = HAL_RNG_STATE_ERROR;
mbed_official 376:cb4d9db17537 317
mbed_official 376:cb4d9db17537 318 /* Process Unlocked */
mbed_official 376:cb4d9db17537 319 __HAL_UNLOCK(hrng);
mbed_official 376:cb4d9db17537 320 }
mbed_official 376:cb4d9db17537 321
mbed_official 376:cb4d9db17537 322 /* RNG seed error interrupt occurred */
mbed_official 376:cb4d9db17537 323 if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_SEI) != RESET)
mbed_official 376:cb4d9db17537 324 {
mbed_official 376:cb4d9db17537 325 HAL_RNG_ErrorCallback(hrng);
mbed_official 376:cb4d9db17537 326
mbed_official 376:cb4d9db17537 327 /* Clear the seed error flag */
mbed_official 376:cb4d9db17537 328 __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_SEI);
mbed_official 376:cb4d9db17537 329
mbed_official 376:cb4d9db17537 330 /* Change RNG peripheral state */
mbed_official 376:cb4d9db17537 331 hrng->State = HAL_RNG_STATE_ERROR;
mbed_official 376:cb4d9db17537 332
mbed_official 376:cb4d9db17537 333 /* Process Unlocked */
mbed_official 376:cb4d9db17537 334 __HAL_UNLOCK(hrng);
mbed_official 376:cb4d9db17537 335 }
mbed_official 376:cb4d9db17537 336
mbed_official 376:cb4d9db17537 337 /* Check RNG data ready flag */
mbed_official 376:cb4d9db17537 338 if(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) != RESET)
mbed_official 376:cb4d9db17537 339 {
mbed_official 376:cb4d9db17537 340 /* Data Ready callback */
mbed_official 376:cb4d9db17537 341 HAL_RNG_ReadyCallback(hrng);
mbed_official 376:cb4d9db17537 342
mbed_official 376:cb4d9db17537 343 /* Change RNG peripheral state */
mbed_official 376:cb4d9db17537 344 hrng->State = HAL_RNG_STATE_READY;
mbed_official 376:cb4d9db17537 345
mbed_official 376:cb4d9db17537 346 /* Clear the RNG Data Ready flag */
mbed_official 376:cb4d9db17537 347 __HAL_RNG_CLEAR_FLAG(hrng, RNG_FLAG_DRDY);
mbed_official 376:cb4d9db17537 348
mbed_official 376:cb4d9db17537 349 /* Process Unlocked */
mbed_official 376:cb4d9db17537 350 __HAL_UNLOCK(hrng);
mbed_official 376:cb4d9db17537 351 }
mbed_official 376:cb4d9db17537 352 }
mbed_official 376:cb4d9db17537 353
mbed_official 376:cb4d9db17537 354 /**
mbed_official 376:cb4d9db17537 355 * @brief Data Ready callback in non-blocking mode.
mbed_official 376:cb4d9db17537 356 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 357 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 358 * @retval None
mbed_official 376:cb4d9db17537 359 */
mbed_official 376:cb4d9db17537 360
mbed_official 376:cb4d9db17537 361 __weak void HAL_RNG_ReadyCallback(RNG_HandleTypeDef* hrng)
mbed_official 376:cb4d9db17537 362 {
mbed_official 376:cb4d9db17537 363 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 376:cb4d9db17537 364 the HAL_RNG_ReadyCallback could be implemented in the user file
mbed_official 376:cb4d9db17537 365 */
mbed_official 376:cb4d9db17537 366 }
mbed_official 376:cb4d9db17537 367
mbed_official 376:cb4d9db17537 368 /**
mbed_official 376:cb4d9db17537 369 * @brief RNG error callbacks.
mbed_official 376:cb4d9db17537 370 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 371 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 372 * @retval None
mbed_official 376:cb4d9db17537 373 */
mbed_official 376:cb4d9db17537 374 __weak void HAL_RNG_ErrorCallback(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 375 {
mbed_official 376:cb4d9db17537 376 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 376:cb4d9db17537 377 the HAL_RNG_ErrorCallback could be implemented in the user file
mbed_official 376:cb4d9db17537 378 */
mbed_official 376:cb4d9db17537 379 }
mbed_official 376:cb4d9db17537 380
mbed_official 376:cb4d9db17537 381 /**
mbed_official 376:cb4d9db17537 382 * @}
mbed_official 376:cb4d9db17537 383 */
mbed_official 376:cb4d9db17537 384
mbed_official 376:cb4d9db17537 385 /** @defgroup RNG_Group3 Peripheral State functions
mbed_official 376:cb4d9db17537 386 * @brief Peripheral State functions.
mbed_official 376:cb4d9db17537 387 *
mbed_official 376:cb4d9db17537 388 @verbatim
mbed_official 376:cb4d9db17537 389 ===============================================================================
mbed_official 376:cb4d9db17537 390 ##### Peripheral State functions #####
mbed_official 376:cb4d9db17537 391 ===============================================================================
mbed_official 376:cb4d9db17537 392 [..]
mbed_official 376:cb4d9db17537 393 This subsection permits to get in run-time the status of the peripheral
mbed_official 376:cb4d9db17537 394 and the data flow.
mbed_official 376:cb4d9db17537 395
mbed_official 376:cb4d9db17537 396 @endverbatim
mbed_official 376:cb4d9db17537 397 * @{
mbed_official 376:cb4d9db17537 398 */
mbed_official 376:cb4d9db17537 399
mbed_official 376:cb4d9db17537 400 /**
mbed_official 376:cb4d9db17537 401 * @brief Returns the RNG state.
mbed_official 376:cb4d9db17537 402 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 376:cb4d9db17537 403 * the configuration information for RNG.
mbed_official 376:cb4d9db17537 404 * @retval HAL state
mbed_official 376:cb4d9db17537 405 */
mbed_official 376:cb4d9db17537 406 HAL_RNG_StateTypeDef HAL_RNG_GetState(RNG_HandleTypeDef *hrng)
mbed_official 376:cb4d9db17537 407 {
mbed_official 376:cb4d9db17537 408 return hrng->State;
mbed_official 376:cb4d9db17537 409 }
mbed_official 376:cb4d9db17537 410
mbed_official 376:cb4d9db17537 411 /**
mbed_official 376:cb4d9db17537 412 * @}
mbed_official 376:cb4d9db17537 413 */
mbed_official 376:cb4d9db17537 414
mbed_official 376:cb4d9db17537 415 /**
mbed_official 376:cb4d9db17537 416 * @}
mbed_official 376:cb4d9db17537 417 */
mbed_official 376:cb4d9db17537 418 #endif /* STM32L051xx && STM32L061xx*/
mbed_official 376:cb4d9db17537 419 #endif /* HAL_RNG_MODULE_ENABLED */
mbed_official 376:cb4d9db17537 420 /**
mbed_official 376:cb4d9db17537 421 * @}
mbed_official 376:cb4d9db17537 422 */
mbed_official 376:cb4d9db17537 423
mbed_official 376:cb4d9db17537 424 /**
mbed_official 376:cb4d9db17537 425 * @}
mbed_official 376:cb4d9db17537 426 */
mbed_official 376:cb4d9db17537 427
mbed_official 376:cb4d9db17537 428 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
mbed_official 376:cb4d9db17537 429