Janek Mann / mbed-src-openwear

mbed library sources modified for open wear

Dependents:   openwear-lifelogger-example

Fork of mbed-src by mbed official

targets/cmsis/TARGET_STM/TARGET_STM32F407VG/stm32f4xx_hal_rng.c@310:6188e0254baa, 2014-09-16 (annotated)

Committer:
janekm
Date:
Tue Sep 16 22:42:01 2014 +0000
Revision:
310:6188e0254baa
Parent:
297:ec1b66a3d094 
N/A

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 133:d4dda5c437f0 1 /**
mbed_official 133:d4dda5c437f0 2 ******************************************************************************
mbed_official 133:d4dda5c437f0 3 * @file stm32f4xx_hal_rng.c
mbed_official 133:d4dda5c437f0 4 * @author MCD Application Team
mbed_official 242:7074e42da0b2 5 * @version V1.1.0RC2
mbed_official 242:7074e42da0b2 6 * @date 14-May-2014
mbed_official 133:d4dda5c437f0 7 * @brief RNG HAL module driver.
mbed_official 133:d4dda5c437f0 8 * This file provides firmware functions to manage the following
mbed_official 133:d4dda5c437f0 9 * functionalities of the Random Number Generator (RNG) peripheral:
mbed_official 133:d4dda5c437f0 10 * + Initialization/de-initialization functions
mbed_official 133:d4dda5c437f0 11 * + Peripheral Control functions
mbed_official 133:d4dda5c437f0 12 * + Peripheral State functions
mbed_official 133:d4dda5c437f0 13 *
mbed_official 133:d4dda5c437f0 14 @verbatim
mbed_official 133:d4dda5c437f0 15 ==============================================================================
mbed_official 133:d4dda5c437f0 16 ##### How to use this driver #####
mbed_official 133:d4dda5c437f0 17 ==============================================================================
mbed_official 133:d4dda5c437f0 18 [..]
mbed_official 133:d4dda5c437f0 19 The RNG HAL driver can be used as follows:
mbed_official 133:d4dda5c437f0 20
mbed_official 133:d4dda5c437f0 21 (#) Enable the RNG controller clock using __RNG_CLK_ENABLE() macro.
mbed_official 133:d4dda5c437f0 22 (#) Activate the RNG peripheral using __HAL_RNG_ENABLE() macro.
mbed_official 133:d4dda5c437f0 23 (#) Wait until the 32 bit Random Number Generator contains a valid
mbed_official 133:d4dda5c437f0 24 random data using (polling/interrupt) mode.
mbed_official 133:d4dda5c437f0 25 (#) Get the 32 bit random number using HAL_RNG_GetRandomNumber() function.
mbed_official 133:d4dda5c437f0 26
mbed_official 133:d4dda5c437f0 27 @endverbatim
mbed_official 133:d4dda5c437f0 28 ******************************************************************************
mbed_official 133:d4dda5c437f0 29 * @attention
mbed_official 133:d4dda5c437f0 30 *
mbed_official 133:d4dda5c437f0 31 * <h2><center>&copy; COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
mbed_official 133:d4dda5c437f0 32 *
mbed_official 133:d4dda5c437f0 33 * Redistribution and use in source and binary forms, with or without modification,
mbed_official 133:d4dda5c437f0 34 * are permitted provided that the following conditions are met:
mbed_official 133:d4dda5c437f0 35 * 1. Redistributions of source code must retain the above copyright notice,
mbed_official 133:d4dda5c437f0 36 * this list of conditions and the following disclaimer.
mbed_official 133:d4dda5c437f0 37 * 2. Redistributions in binary form must reproduce the above copyright notice,
mbed_official 133:d4dda5c437f0 38 * this list of conditions and the following disclaimer in the documentation
mbed_official 133:d4dda5c437f0 39 * and/or other materials provided with the distribution.
mbed_official 133:d4dda5c437f0 40 * 3. Neither the name of STMicroelectronics nor the names of its contributors
mbed_official 133:d4dda5c437f0 41 * may be used to endorse or promote products derived from this software
mbed_official 133:d4dda5c437f0 42 * without specific prior written permission.
mbed_official 133:d4dda5c437f0 43 *
mbed_official 133:d4dda5c437f0 44 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
mbed_official 133:d4dda5c437f0 45 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
mbed_official 133:d4dda5c437f0 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
mbed_official 133:d4dda5c437f0 47 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
mbed_official 133:d4dda5c437f0 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
mbed_official 133:d4dda5c437f0 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
mbed_official 133:d4dda5c437f0 50 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
mbed_official 133:d4dda5c437f0 51 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
mbed_official 133:d4dda5c437f0 52 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
mbed_official 133:d4dda5c437f0 53 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
mbed_official 133:d4dda5c437f0 54 *
mbed_official 133:d4dda5c437f0 55 ******************************************************************************
mbed_official 133:d4dda5c437f0 56 */
mbed_official 133:d4dda5c437f0 57
mbed_official 133:d4dda5c437f0 58 /* Includes ------------------------------------------------------------------*/
mbed_official 133:d4dda5c437f0 59 #include "stm32f4xx_hal.h"
mbed_official 133:d4dda5c437f0 60
mbed_official 133:d4dda5c437f0 61 /** @addtogroup STM32F4xx_HAL_Driver
mbed_official 133:d4dda5c437f0 62 * @{
mbed_official 133:d4dda5c437f0 63 */
mbed_official 133:d4dda5c437f0 64
mbed_official 133:d4dda5c437f0 65 /** @defgroup RNG
mbed_official 133:d4dda5c437f0 66 * @brief RNG HAL module driver.
mbed_official 133:d4dda5c437f0 67 * @{
mbed_official 133:d4dda5c437f0 68 */
mbed_official 133:d4dda5c437f0 69
mbed_official 133:d4dda5c437f0 70 #ifdef HAL_RNG_MODULE_ENABLED
mbed_official 133:d4dda5c437f0 71
mbed_official 133:d4dda5c437f0 72 /* Private typedef -----------------------------------------------------------*/
mbed_official 133:d4dda5c437f0 73 /* Private define ------------------------------------------------------------*/
mbed_official 133:d4dda5c437f0 74 #define RNG_TIMEOUT_VALUE 1000
mbed_official 133:d4dda5c437f0 75 /* Private macro -------------------------------------------------------------*/
mbed_official 133:d4dda5c437f0 76 /* Private variables ---------------------------------------------------------*/
mbed_official 133:d4dda5c437f0 77 /* Private function prototypes -----------------------------------------------*/
mbed_official 133:d4dda5c437f0 78 /* Private functions ---------------------------------------------------------*/
mbed_official 133:d4dda5c437f0 79
mbed_official 133:d4dda5c437f0 80 /** @defgroup RNG_Private_Functions
mbed_official 133:d4dda5c437f0 81 * @{
mbed_official 133:d4dda5c437f0 82 */
mbed_official 133:d4dda5c437f0 83
mbed_official 133:d4dda5c437f0 84 /** @defgroup RNG_Group1 Initialization and de-initialization functions
mbed_official 133:d4dda5c437f0 85 * @brief Initialization and Configuration functions.
mbed_official 133:d4dda5c437f0 86 *
mbed_official 133:d4dda5c437f0 87 @verbatim
mbed_official 133:d4dda5c437f0 88 ===============================================================================
mbed_official 133:d4dda5c437f0 89 ##### Initialization and de-initialization functions #####
mbed_official 133:d4dda5c437f0 90 ===============================================================================
mbed_official 133:d4dda5c437f0 91 [..] This section provides functions allowing to:
mbed_official 133:d4dda5c437f0 92 (+) Initialize the RNG according to the specified parameters
mbed_official 133:d4dda5c437f0 93 in the RNG_InitTypeDef and create the associated handle
mbed_official 133:d4dda5c437f0 94 (+) DeInitialize the RNG peripheral
mbed_official 133:d4dda5c437f0 95 (+) Initialize the RNG MSP
mbed_official 133:d4dda5c437f0 96 (+) DeInitialize RNG MSP
mbed_official 133:d4dda5c437f0 97
mbed_official 133:d4dda5c437f0 98 @endverbatim
mbed_official 133:d4dda5c437f0 99 * @{
mbed_official 133:d4dda5c437f0 100 */
mbed_official 133:d4dda5c437f0 101
mbed_official 133:d4dda5c437f0 102 /**
mbed_official 133:d4dda5c437f0 103 * @brief Initializes the RNG according to the specified
mbed_official 133:d4dda5c437f0 104 * parameters in the RNG_InitTypeDef and creates the associated handle.
mbed_official 242:7074e42da0b2 105 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 106 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 107 * @retval HAL status
mbed_official 133:d4dda5c437f0 108 */
mbed_official 133:d4dda5c437f0 109 HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 110 {
mbed_official 133:d4dda5c437f0 111 /* Check the RNG handle allocation */
mbed_official 133:d4dda5c437f0 112 if(hrng == NULL)
mbed_official 133:d4dda5c437f0 113 {
mbed_official 133:d4dda5c437f0 114 return HAL_ERROR;
mbed_official 133:d4dda5c437f0 115 }
mbed_official 133:d4dda5c437f0 116
mbed_official 133:d4dda5c437f0 117 if(hrng->State == HAL_RNG_STATE_RESET)
mbed_official 133:d4dda5c437f0 118 {
mbed_official 133:d4dda5c437f0 119 /* Init the low level hardware */
mbed_official 133:d4dda5c437f0 120 HAL_RNG_MspInit(hrng);
mbed_official 133:d4dda5c437f0 121 }
mbed_official 242:7074e42da0b2 122 /* Change RNG peripheral state */
mbed_official 242:7074e42da0b2 123 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 133:d4dda5c437f0 124
mbed_official 133:d4dda5c437f0 125 /* Enable the RNG Peripheral */
mbed_official 133:d4dda5c437f0 126 __HAL_RNG_ENABLE(hrng);
mbed_official 242:7074e42da0b2 127
mbed_official 133:d4dda5c437f0 128 /* Initialize the RNG state */
mbed_official 133:d4dda5c437f0 129 hrng->State = HAL_RNG_STATE_READY;
mbed_official 242:7074e42da0b2 130
mbed_official 133:d4dda5c437f0 131 /* Return function status */
mbed_official 133:d4dda5c437f0 132 return HAL_OK;
mbed_official 133:d4dda5c437f0 133 }
mbed_official 133:d4dda5c437f0 134
mbed_official 133:d4dda5c437f0 135 /**
mbed_official 133:d4dda5c437f0 136 * @brief DeInitializes the RNG peripheral.
mbed_official 242:7074e42da0b2 137 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 138 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 139 * @retval HAL status
mbed_official 133:d4dda5c437f0 140 */
mbed_official 133:d4dda5c437f0 141 HAL_StatusTypeDef HAL_RNG_DeInit(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 142 {
mbed_official 133:d4dda5c437f0 143 /* Check the RNG peripheral state */
mbed_official 133:d4dda5c437f0 144 if(hrng->State == HAL_RNG_STATE_BUSY)
mbed_official 133:d4dda5c437f0 145 {
mbed_official 133:d4dda5c437f0 146 return HAL_BUSY;
mbed_official 133:d4dda5c437f0 147 }
mbed_official 133:d4dda5c437f0 148
mbed_official 133:d4dda5c437f0 149 /* Update the RNG state */
mbed_official 133:d4dda5c437f0 150 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 133:d4dda5c437f0 151
mbed_official 133:d4dda5c437f0 152 /* Disable the RNG Peripheral */
mbed_official 133:d4dda5c437f0 153 __HAL_RNG_DISABLE(hrng);
mbed_official 133:d4dda5c437f0 154
mbed_official 133:d4dda5c437f0 155 /* Set the RNG registers to their reset values */
mbed_official 133:d4dda5c437f0 156 hrng->Instance->CR &= 0xFFFFFFF3;
mbed_official 133:d4dda5c437f0 157 hrng->Instance->SR &= 0xFFFFFF98;
mbed_official 133:d4dda5c437f0 158 hrng->Instance->DR &= 0x0;
mbed_official 133:d4dda5c437f0 159
mbed_official 133:d4dda5c437f0 160 /* DeInit the low level hardware */
mbed_official 133:d4dda5c437f0 161 HAL_RNG_MspDeInit(hrng);
mbed_official 133:d4dda5c437f0 162
mbed_official 133:d4dda5c437f0 163 /* Update the RNG state */
mbed_official 133:d4dda5c437f0 164 hrng->State = HAL_RNG_STATE_RESET;
mbed_official 133:d4dda5c437f0 165
mbed_official 133:d4dda5c437f0 166 /* Release Lock */
mbed_official 133:d4dda5c437f0 167 __HAL_UNLOCK(hrng);
mbed_official 133:d4dda5c437f0 168
mbed_official 133:d4dda5c437f0 169 /* Return the function status */
mbed_official 133:d4dda5c437f0 170 return HAL_OK;
mbed_official 133:d4dda5c437f0 171 }
mbed_official 133:d4dda5c437f0 172
mbed_official 133:d4dda5c437f0 173 /**
mbed_official 133:d4dda5c437f0 174 * @brief Initializes the RNG MSP.
mbed_official 242:7074e42da0b2 175 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 176 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 177 * @retval None
mbed_official 133:d4dda5c437f0 178 */
mbed_official 133:d4dda5c437f0 179 __weak void HAL_RNG_MspInit(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 180 {
mbed_official 133:d4dda5c437f0 181 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 133:d4dda5c437f0 182 the HAL_RNG_MspInit could be implemented in the user file
mbed_official 133:d4dda5c437f0 183 */
mbed_official 133:d4dda5c437f0 184 }
mbed_official 133:d4dda5c437f0 185
mbed_official 133:d4dda5c437f0 186 /**
mbed_official 133:d4dda5c437f0 187 * @brief DeInitializes the RNG MSP.
mbed_official 242:7074e42da0b2 188 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 189 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 190 * @retval None
mbed_official 133:d4dda5c437f0 191 */
mbed_official 133:d4dda5c437f0 192 __weak void HAL_RNG_MspDeInit(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 193 {
mbed_official 133:d4dda5c437f0 194 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 133:d4dda5c437f0 195 the HAL_RNG_MspDeInit could be implemented in the user file
mbed_official 133:d4dda5c437f0 196 */
mbed_official 133:d4dda5c437f0 197 }
mbed_official 133:d4dda5c437f0 198
mbed_official 133:d4dda5c437f0 199 /**
mbed_official 133:d4dda5c437f0 200 * @}
mbed_official 133:d4dda5c437f0 201 */
mbed_official 133:d4dda5c437f0 202
mbed_official 133:d4dda5c437f0 203 /** @defgroup RNG_Group2 Peripheral Control functions
mbed_official 133:d4dda5c437f0 204 * @brief management functions.
mbed_official 133:d4dda5c437f0 205 *
mbed_official 133:d4dda5c437f0 206 @verbatim
mbed_official 133:d4dda5c437f0 207 ===============================================================================
mbed_official 133:d4dda5c437f0 208 ##### Peripheral Control functions #####
mbed_official 133:d4dda5c437f0 209 ===============================================================================
mbed_official 133:d4dda5c437f0 210 [..] This section provides functions allowing to:
mbed_official 133:d4dda5c437f0 211 (+) Get the 32 bit Random number
mbed_official 133:d4dda5c437f0 212 (+) Get the 32 bit Random number with interrupt enabled
mbed_official 133:d4dda5c437f0 213 (+) Handle RNG interrupt request
mbed_official 133:d4dda5c437f0 214
mbed_official 133:d4dda5c437f0 215
mbed_official 133:d4dda5c437f0 216 @endverbatim
mbed_official 133:d4dda5c437f0 217 * @{
mbed_official 133:d4dda5c437f0 218 */
mbed_official 133:d4dda5c437f0 219
mbed_official 133:d4dda5c437f0 220 /**
mbed_official 133:d4dda5c437f0 221 * @brief Returns a 32-bit random number.
mbed_official 133:d4dda5c437f0 222 * @note Each time the random number data is read the RNG_FLAG_DRDY flag
mbed_official 133:d4dda5c437f0 223 * is automatically cleared.
mbed_official 242:7074e42da0b2 224 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 225 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 226 * @retval 32-bit random number
mbed_official 133:d4dda5c437f0 227 */
mbed_official 133:d4dda5c437f0 228 uint32_t HAL_RNG_GetRandomNumber(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 229 {
mbed_official 133:d4dda5c437f0 230 uint32_t random32bit = 0;
mbed_official 133:d4dda5c437f0 231 uint32_t timeout = 0;
mbed_official 133:d4dda5c437f0 232
mbed_official 133:d4dda5c437f0 233 /* Process Locked */
mbed_official 133:d4dda5c437f0 234 __HAL_LOCK(hrng);
mbed_official 133:d4dda5c437f0 235
mbed_official 133:d4dda5c437f0 236 timeout = HAL_GetTick() + RNG_TIMEOUT_VALUE;
mbed_official 133:d4dda5c437f0 237
mbed_official 133:d4dda5c437f0 238 /* Check if data register contains valid random data */
mbed_official 133:d4dda5c437f0 239 while(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) == RESET)
mbed_official 133:d4dda5c437f0 240 {
mbed_official 133:d4dda5c437f0 241 if(HAL_GetTick() >= timeout)
mbed_official 133:d4dda5c437f0 242 {
mbed_official 133:d4dda5c437f0 243 return HAL_TIMEOUT;
mbed_official 133:d4dda5c437f0 244 }
mbed_official 133:d4dda5c437f0 245 }
mbed_official 133:d4dda5c437f0 246
mbed_official 133:d4dda5c437f0 247 /* Get a 32bit Random number */
mbed_official 133:d4dda5c437f0 248 random32bit = hrng->Instance->DR;
mbed_official 133:d4dda5c437f0 249
mbed_official 133:d4dda5c437f0 250 /* Process Unlocked */
mbed_official 133:d4dda5c437f0 251 __HAL_UNLOCK(hrng);
mbed_official 133:d4dda5c437f0 252
mbed_official 133:d4dda5c437f0 253 /* Return the 32 bit random number */
mbed_official 133:d4dda5c437f0 254 return random32bit;
mbed_official 133:d4dda5c437f0 255 }
mbed_official 133:d4dda5c437f0 256
mbed_official 133:d4dda5c437f0 257 /**
mbed_official 133:d4dda5c437f0 258 * @brief Returns a 32-bit random number with interrupt enabled.
mbed_official 242:7074e42da0b2 259 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 260 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 261 * @retval 32-bit random number
mbed_official 133:d4dda5c437f0 262 */
mbed_official 133:d4dda5c437f0 263 uint32_t HAL_RNG_GetRandomNumber_IT(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 264 {
mbed_official 133:d4dda5c437f0 265 uint32_t random32bit = 0;
mbed_official 133:d4dda5c437f0 266
mbed_official 133:d4dda5c437f0 267 /* Process Locked */
mbed_official 133:d4dda5c437f0 268 __HAL_LOCK(hrng);
mbed_official 133:d4dda5c437f0 269
mbed_official 133:d4dda5c437f0 270 /* Change RNG peripheral state */
mbed_official 133:d4dda5c437f0 271 hrng->State = HAL_RNG_STATE_BUSY;
mbed_official 133:d4dda5c437f0 272
mbed_official 133:d4dda5c437f0 273 /* Get a 32bit Random number */
mbed_official 133:d4dda5c437f0 274 random32bit = hrng->Instance->DR;
mbed_official 133:d4dda5c437f0 275
mbed_official 133:d4dda5c437f0 276 /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */
mbed_official 133:d4dda5c437f0 277 __HAL_RNG_ENABLE_IT(hrng);
mbed_official 133:d4dda5c437f0 278
mbed_official 133:d4dda5c437f0 279 /* Return the 32 bit random number */
mbed_official 133:d4dda5c437f0 280 return random32bit;
mbed_official 133:d4dda5c437f0 281 }
mbed_official 133:d4dda5c437f0 282
mbed_official 133:d4dda5c437f0 283 /**
mbed_official 133:d4dda5c437f0 284 * @brief Handles RNG interrupt request.
mbed_official 133:d4dda5c437f0 285 * @note In the case of a clock error, the RNG is no more able to generate
mbed_official 133:d4dda5c437f0 286 * random numbers because the PLL48CLK clock is not correct. User has
mbed_official 133:d4dda5c437f0 287 * to check that the clock controller is correctly configured to provide
mbed_official 133:d4dda5c437f0 288 * the RNG clock and clear the CEIS bit using __HAL_RNG_CLEAR_FLAG().
mbed_official 133:d4dda5c437f0 289 * The clock error has no impact on the previously generated
mbed_official 133:d4dda5c437f0 290 * random numbers, and the RNG_DR register contents can be used.
mbed_official 133:d4dda5c437f0 291 * @note In the case of a seed error, the generation of random numbers is
mbed_official 133:d4dda5c437f0 292 * interrupted as long as the SECS bit is '1'. If a number is
mbed_official 133:d4dda5c437f0 293 * available in the RNG_DR register, it must not be used because it may
mbed_official 133:d4dda5c437f0 294 * not have enough entropy. In this case, it is recommended to clear the
mbed_official 133:d4dda5c437f0 295 * SEIS bit using __HAL_RNG_CLEAR_FLAG(), then disable and enable
mbed_official 133:d4dda5c437f0 296 * the RNG peripheral to reinitialize and restart the RNG.
mbed_official 242:7074e42da0b2 297 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 298 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 299 * @retval None
mbed_official 133:d4dda5c437f0 300
mbed_official 133:d4dda5c437f0 301 */
mbed_official 133:d4dda5c437f0 302 void HAL_RNG_IRQHandler(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 303 {
mbed_official 242:7074e42da0b2 304 /* RNG clock error interrupt occurred */
mbed_official 133:d4dda5c437f0 305 if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_CEI) != RESET)
mbed_official 133:d4dda5c437f0 306 {
mbed_official 133:d4dda5c437f0 307 HAL_RNG_ErrorCallback(hrng);
mbed_official 133:d4dda5c437f0 308
mbed_official 133:d4dda5c437f0 309 /* Clear the clock error flag */
mbed_official 133:d4dda5c437f0 310 __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_CEI);
mbed_official 133:d4dda5c437f0 311
mbed_official 133:d4dda5c437f0 312 /* Change RNG peripheral state */
mbed_official 133:d4dda5c437f0 313 hrng->State = HAL_RNG_STATE_ERROR;
mbed_official 133:d4dda5c437f0 314
mbed_official 133:d4dda5c437f0 315 /* Process Unlocked */
mbed_official 133:d4dda5c437f0 316 __HAL_UNLOCK(hrng);
mbed_official 133:d4dda5c437f0 317 }
mbed_official 133:d4dda5c437f0 318
mbed_official 242:7074e42da0b2 319 /* RNG seed error interrupt occurred */
mbed_official 133:d4dda5c437f0 320 if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_SEI) != RESET)
mbed_official 133:d4dda5c437f0 321 {
mbed_official 133:d4dda5c437f0 322 HAL_RNG_ErrorCallback(hrng);
mbed_official 133:d4dda5c437f0 323
mbed_official 133:d4dda5c437f0 324 /* Clear the seed error flag */
mbed_official 133:d4dda5c437f0 325 __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_SEI);
mbed_official 133:d4dda5c437f0 326
mbed_official 133:d4dda5c437f0 327 /* Change RNG peripheral state */
mbed_official 133:d4dda5c437f0 328 hrng->State = HAL_RNG_STATE_ERROR;
mbed_official 133:d4dda5c437f0 329
mbed_official 133:d4dda5c437f0 330 /* Process Unlocked */
mbed_official 133:d4dda5c437f0 331 __HAL_UNLOCK(hrng);
mbed_official 133:d4dda5c437f0 332 }
mbed_official 133:d4dda5c437f0 333
mbed_official 133:d4dda5c437f0 334 /* Check RNG data ready flag */
mbed_official 133:d4dda5c437f0 335 if(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) != RESET)
mbed_official 133:d4dda5c437f0 336 {
mbed_official 133:d4dda5c437f0 337 /* Data Ready callback */
mbed_official 133:d4dda5c437f0 338 HAL_RNG_ReadyCallback(hrng);
mbed_official 133:d4dda5c437f0 339
mbed_official 133:d4dda5c437f0 340 /* Change RNG peripheral state */
mbed_official 133:d4dda5c437f0 341 hrng->State = HAL_RNG_STATE_READY;
mbed_official 133:d4dda5c437f0 342
mbed_official 133:d4dda5c437f0 343 /* Clear the RNG Data Ready flag */
mbed_official 133:d4dda5c437f0 344 __HAL_RNG_CLEAR_FLAG(hrng, RNG_FLAG_DRDY);
mbed_official 133:d4dda5c437f0 345
mbed_official 133:d4dda5c437f0 346 /* Process Unlocked */
mbed_official 133:d4dda5c437f0 347 __HAL_UNLOCK(hrng);
mbed_official 133:d4dda5c437f0 348 }
mbed_official 133:d4dda5c437f0 349 }
mbed_official 133:d4dda5c437f0 350
mbed_official 133:d4dda5c437f0 351 /**
mbed_official 133:d4dda5c437f0 352 * @brief Data Ready callback in non-blocking mode.
mbed_official 242:7074e42da0b2 353 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 354 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 355 * @retval None
mbed_official 133:d4dda5c437f0 356 */
mbed_official 133:d4dda5c437f0 357
mbed_official 133:d4dda5c437f0 358 __weak void HAL_RNG_ReadyCallback(RNG_HandleTypeDef* hrng)
mbed_official 133:d4dda5c437f0 359 {
mbed_official 133:d4dda5c437f0 360 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 133:d4dda5c437f0 361 the HAL_RNG_ReadyCallback could be implemented in the user file
mbed_official 133:d4dda5c437f0 362 */
mbed_official 133:d4dda5c437f0 363 }
mbed_official 133:d4dda5c437f0 364
mbed_official 133:d4dda5c437f0 365 /**
mbed_official 133:d4dda5c437f0 366 * @brief RNG error callbacks.
mbed_official 242:7074e42da0b2 367 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 368 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 369 * @retval None
mbed_official 133:d4dda5c437f0 370 */
mbed_official 133:d4dda5c437f0 371 __weak void HAL_RNG_ErrorCallback(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 372 {
mbed_official 133:d4dda5c437f0 373 /* NOTE : This function Should not be modified, when the callback is needed,
mbed_official 133:d4dda5c437f0 374 the HAL_RNG_ErrorCallback could be implemented in the user file
mbed_official 133:d4dda5c437f0 375 */
mbed_official 133:d4dda5c437f0 376 }
mbed_official 133:d4dda5c437f0 377
mbed_official 133:d4dda5c437f0 378 /**
mbed_official 133:d4dda5c437f0 379 * @}
mbed_official 133:d4dda5c437f0 380 */
mbed_official 133:d4dda5c437f0 381
mbed_official 133:d4dda5c437f0 382 /** @defgroup RNG_Group3 Peripheral State functions
mbed_official 133:d4dda5c437f0 383 * @brief Peripheral State functions.
mbed_official 133:d4dda5c437f0 384 *
mbed_official 133:d4dda5c437f0 385 @verbatim
mbed_official 133:d4dda5c437f0 386 ===============================================================================
mbed_official 133:d4dda5c437f0 387 ##### Peripheral State functions #####
mbed_official 133:d4dda5c437f0 388 ===============================================================================
mbed_official 133:d4dda5c437f0 389 [..]
mbed_official 133:d4dda5c437f0 390 This subsection permits to get in run-time the status of the peripheral
mbed_official 133:d4dda5c437f0 391 and the data flow.
mbed_official 133:d4dda5c437f0 392
mbed_official 133:d4dda5c437f0 393 @endverbatim
mbed_official 133:d4dda5c437f0 394 * @{
mbed_official 133:d4dda5c437f0 395 */
mbed_official 133:d4dda5c437f0 396
mbed_official 133:d4dda5c437f0 397 /**
mbed_official 133:d4dda5c437f0 398 * @brief Returns the RNG state.
mbed_official 242:7074e42da0b2 399 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
mbed_official 242:7074e42da0b2 400 * the configuration information for RNG.
mbed_official 133:d4dda5c437f0 401 * @retval HAL state
mbed_official 133:d4dda5c437f0 402 */
mbed_official 133:d4dda5c437f0 403 HAL_RNG_StateTypeDef HAL_RNG_GetState(RNG_HandleTypeDef *hrng)
mbed_official 133:d4dda5c437f0 404 {
mbed_official 133:d4dda5c437f0 405 return hrng->State;
mbed_official 133:d4dda5c437f0 406 }
mbed_official 133:d4dda5c437f0 407
mbed_official 133:d4dda5c437f0 408 /**
mbed_official 133:d4dda5c437f0 409 * @}
mbed_official 133:d4dda5c437f0 410 */
mbed_official 133:d4dda5c437f0 411
mbed_official 133:d4dda5c437f0 412 /**
mbed_official 133:d4dda5c437f0 413 * @}
mbed_official 133:d4dda5c437f0 414 */
mbed_official 133:d4dda5c437f0 415
mbed_official 133:d4dda5c437f0 416 #endif /* HAL_RNG_MODULE_ENABLED */
mbed_official 133:d4dda5c437f0 417 /**
mbed_official 133:d4dda5c437f0 418 * @}
mbed_official 133:d4dda5c437f0 419 */
mbed_official 133:d4dda5c437f0 420
mbed_official 133:d4dda5c437f0 421 /**
mbed_official 133:d4dda5c437f0 422 * @}
mbed_official 133:d4dda5c437f0 423 */
mbed_official 133:d4dda5c437f0 424
mbed_official 133:d4dda5c437f0 425 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
mbed_official 133:d4dda5c437f0 426