mbed library sources
Dependents: frdm_kl05z_gpio_test
Fork of mbed-src by
targets/cmsis/TARGET_STM/TARGET_NUCLEO_L053R8/stm32l0xx_hal_rng.c@181:a4cbdfbbd2f4, 2014-05-07 (annotated)
- Committer:
- mbed_official
- Date:
- Wed May 07 13:15:08 2014 +0100
- Revision:
- 181:a4cbdfbbd2f4
Synchronized with git revision 7751e759576c6fd68deccb81ea82bac19ed41745
Full URL: https://github.com/mbedmicro/mbed/commit/7751e759576c6fd68deccb81ea82bac19ed41745/
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
mbed_official | 181:a4cbdfbbd2f4 | 1 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 2 | ****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 3 | * @file stm32l0xx_hal_rng.c |
mbed_official | 181:a4cbdfbbd2f4 | 4 | * @author MCD Application Team |
mbed_official | 181:a4cbdfbbd2f4 | 5 | * @version V1.0.0 |
mbed_official | 181:a4cbdfbbd2f4 | 6 | * @date 22-April-2014 |
mbed_official | 181:a4cbdfbbd2f4 | 7 | * @brief RNG HAL module driver. |
mbed_official | 181:a4cbdfbbd2f4 | 8 | * This file provides firmware functions to manage the following |
mbed_official | 181:a4cbdfbbd2f4 | 9 | * functionalities of the Random Number Generator (RNG) peripheral: |
mbed_official | 181:a4cbdfbbd2f4 | 10 | * + Initialization/de-initialization functions |
mbed_official | 181:a4cbdfbbd2f4 | 11 | * + Peripheral Control functions |
mbed_official | 181:a4cbdfbbd2f4 | 12 | * + Peripheral State functions |
mbed_official | 181:a4cbdfbbd2f4 | 13 | * |
mbed_official | 181:a4cbdfbbd2f4 | 14 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 15 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 16 | ##### How to use this driver ##### |
mbed_official | 181:a4cbdfbbd2f4 | 17 | ============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 18 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 19 | The RNG HAL driver can be used as follows: |
mbed_official | 181:a4cbdfbbd2f4 | 20 | |
mbed_official | 181:a4cbdfbbd2f4 | 21 | (#) Enable the RNG controller clock using __RNG_CLK_ENABLE() macro. |
mbed_official | 181:a4cbdfbbd2f4 | 22 | (#) Activate the RNG peripheral using __HAL_RNG_ENABLE() macro. |
mbed_official | 181:a4cbdfbbd2f4 | 23 | (#) Wait until the 32 bit Random Number Generator contains a valid |
mbed_official | 181:a4cbdfbbd2f4 | 24 | random data using (polling/interrupt) mode. |
mbed_official | 181:a4cbdfbbd2f4 | 25 | (#) Get the 32 bit random number using HAL_RNG_GetRandomNumber() function. |
mbed_official | 181:a4cbdfbbd2f4 | 26 | |
mbed_official | 181:a4cbdfbbd2f4 | 27 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 28 | ****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 29 | * @attention |
mbed_official | 181:a4cbdfbbd2f4 | 30 | * |
mbed_official | 181:a4cbdfbbd2f4 | 31 | * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2> |
mbed_official | 181:a4cbdfbbd2f4 | 32 | * |
mbed_official | 181:a4cbdfbbd2f4 | 33 | * Redistribution and use in source and binary forms, with or without modification, |
mbed_official | 181:a4cbdfbbd2f4 | 34 | * are permitted provided that the following conditions are met: |
mbed_official | 181:a4cbdfbbd2f4 | 35 | * 1. Redistributions of source code must retain the above copyright notice, |
mbed_official | 181:a4cbdfbbd2f4 | 36 | * this list of conditions and the following disclaimer. |
mbed_official | 181:a4cbdfbbd2f4 | 37 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
mbed_official | 181:a4cbdfbbd2f4 | 38 | * this list of conditions and the following disclaimer in the documentation |
mbed_official | 181:a4cbdfbbd2f4 | 39 | * and/or other materials provided with the distribution. |
mbed_official | 181:a4cbdfbbd2f4 | 40 | * 3. Neither the name of STMicroelectronics nor the names of its contributors |
mbed_official | 181:a4cbdfbbd2f4 | 41 | * may be used to endorse or promote products derived from this software |
mbed_official | 181:a4cbdfbbd2f4 | 42 | * without specific prior written permission. |
mbed_official | 181:a4cbdfbbd2f4 | 43 | * |
mbed_official | 181:a4cbdfbbd2f4 | 44 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
mbed_official | 181:a4cbdfbbd2f4 | 45 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
mbed_official | 181:a4cbdfbbd2f4 | 46 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
mbed_official | 181:a4cbdfbbd2f4 | 47 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE |
mbed_official | 181:a4cbdfbbd2f4 | 48 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
mbed_official | 181:a4cbdfbbd2f4 | 49 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
mbed_official | 181:a4cbdfbbd2f4 | 50 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER |
mbed_official | 181:a4cbdfbbd2f4 | 51 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
mbed_official | 181:a4cbdfbbd2f4 | 52 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
mbed_official | 181:a4cbdfbbd2f4 | 53 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
mbed_official | 181:a4cbdfbbd2f4 | 54 | * |
mbed_official | 181:a4cbdfbbd2f4 | 55 | ****************************************************************************** |
mbed_official | 181:a4cbdfbbd2f4 | 56 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 57 | |
mbed_official | 181:a4cbdfbbd2f4 | 58 | /* Includes ------------------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 59 | #include "stm32l0xx_hal.h" |
mbed_official | 181:a4cbdfbbd2f4 | 60 | |
mbed_official | 181:a4cbdfbbd2f4 | 61 | /** @addtogroup STM32L0xx_HAL_Driver |
mbed_official | 181:a4cbdfbbd2f4 | 62 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 63 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 64 | |
mbed_official | 181:a4cbdfbbd2f4 | 65 | /** @defgroup RNG |
mbed_official | 181:a4cbdfbbd2f4 | 66 | * @brief RNG HAL module driver. |
mbed_official | 181:a4cbdfbbd2f4 | 67 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 68 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 69 | |
mbed_official | 181:a4cbdfbbd2f4 | 70 | #ifdef HAL_RNG_MODULE_ENABLED |
mbed_official | 181:a4cbdfbbd2f4 | 71 | #if !defined (STM32L051xx) && !defined (STM32L061xx) |
mbed_official | 181:a4cbdfbbd2f4 | 72 | |
mbed_official | 181:a4cbdfbbd2f4 | 73 | /* Private typedef -----------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 74 | /* Private define ------------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 75 | #define RNG_TIMEOUT_VALUE 1000 |
mbed_official | 181:a4cbdfbbd2f4 | 76 | /* Private macro -------------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 77 | /* Private variables ---------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 78 | /* Private function prototypes -----------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 79 | /* Private functions ---------------------------------------------------------*/ |
mbed_official | 181:a4cbdfbbd2f4 | 80 | |
mbed_official | 181:a4cbdfbbd2f4 | 81 | /** @defgroup RNG_Private_Functions |
mbed_official | 181:a4cbdfbbd2f4 | 82 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 83 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 84 | |
mbed_official | 181:a4cbdfbbd2f4 | 85 | /** @defgroup RNG_Group1 Initialization and de-initialization functions |
mbed_official | 181:a4cbdfbbd2f4 | 86 | * @brief Initialization and Configuration functions. |
mbed_official | 181:a4cbdfbbd2f4 | 87 | * |
mbed_official | 181:a4cbdfbbd2f4 | 88 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 89 | =============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 90 | ##### Initialization and de-initialization functions ##### |
mbed_official | 181:a4cbdfbbd2f4 | 91 | =============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 92 | [..] This section provides functions allowing to: |
mbed_official | 181:a4cbdfbbd2f4 | 93 | (+) Initialize the RNG according to the specified parameters |
mbed_official | 181:a4cbdfbbd2f4 | 94 | in the RNG_InitTypeDef and create the associated handle |
mbed_official | 181:a4cbdfbbd2f4 | 95 | (+) DeInitialize the RNG peripheral |
mbed_official | 181:a4cbdfbbd2f4 | 96 | (+) Initialize the RNG MSP |
mbed_official | 181:a4cbdfbbd2f4 | 97 | (+) DeInitialize RNG MSP |
mbed_official | 181:a4cbdfbbd2f4 | 98 | |
mbed_official | 181:a4cbdfbbd2f4 | 99 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 100 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 101 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 102 | |
mbed_official | 181:a4cbdfbbd2f4 | 103 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 104 | * @brief Initializes the RNG according to the specified |
mbed_official | 181:a4cbdfbbd2f4 | 105 | * parameters in the RNG_InitTypeDef and creates the associated handle. |
mbed_official | 181:a4cbdfbbd2f4 | 106 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 107 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 108 | * @retval HAL status |
mbed_official | 181:a4cbdfbbd2f4 | 109 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 110 | HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 111 | { |
mbed_official | 181:a4cbdfbbd2f4 | 112 | /* Check the RNG handle allocation */ |
mbed_official | 181:a4cbdfbbd2f4 | 113 | if(hrng == NULL) |
mbed_official | 181:a4cbdfbbd2f4 | 114 | { |
mbed_official | 181:a4cbdfbbd2f4 | 115 | return HAL_ERROR; |
mbed_official | 181:a4cbdfbbd2f4 | 116 | } |
mbed_official | 181:a4cbdfbbd2f4 | 117 | |
mbed_official | 181:a4cbdfbbd2f4 | 118 | if(hrng->State == HAL_RNG_STATE_RESET) |
mbed_official | 181:a4cbdfbbd2f4 | 119 | { |
mbed_official | 181:a4cbdfbbd2f4 | 120 | /* Init the low level hardware */ |
mbed_official | 181:a4cbdfbbd2f4 | 121 | HAL_RNG_MspInit(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 122 | } |
mbed_official | 181:a4cbdfbbd2f4 | 123 | |
mbed_official | 181:a4cbdfbbd2f4 | 124 | /* Change RNG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 125 | hrng->State = HAL_RNG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 126 | |
mbed_official | 181:a4cbdfbbd2f4 | 127 | /* Enable the RNG Peripheral */ |
mbed_official | 181:a4cbdfbbd2f4 | 128 | __HAL_RNG_ENABLE(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 129 | |
mbed_official | 181:a4cbdfbbd2f4 | 130 | /* Initialize the RNG state */ |
mbed_official | 181:a4cbdfbbd2f4 | 131 | hrng->State = HAL_RNG_STATE_READY; |
mbed_official | 181:a4cbdfbbd2f4 | 132 | |
mbed_official | 181:a4cbdfbbd2f4 | 133 | /* Return function status */ |
mbed_official | 181:a4cbdfbbd2f4 | 134 | return HAL_OK; |
mbed_official | 181:a4cbdfbbd2f4 | 135 | } |
mbed_official | 181:a4cbdfbbd2f4 | 136 | |
mbed_official | 181:a4cbdfbbd2f4 | 137 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 138 | * @brief DeInitializes the RNG peripheral. |
mbed_official | 181:a4cbdfbbd2f4 | 139 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 140 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 141 | * @retval HAL status |
mbed_official | 181:a4cbdfbbd2f4 | 142 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 143 | HAL_StatusTypeDef HAL_RNG_DeInit(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 144 | { |
mbed_official | 181:a4cbdfbbd2f4 | 145 | /* Check the RNG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 146 | if(hrng->State == HAL_RNG_STATE_BUSY) |
mbed_official | 181:a4cbdfbbd2f4 | 147 | { |
mbed_official | 181:a4cbdfbbd2f4 | 148 | return HAL_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 149 | } |
mbed_official | 181:a4cbdfbbd2f4 | 150 | |
mbed_official | 181:a4cbdfbbd2f4 | 151 | /* Update the RNG state */ |
mbed_official | 181:a4cbdfbbd2f4 | 152 | hrng->State = HAL_RNG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 153 | |
mbed_official | 181:a4cbdfbbd2f4 | 154 | /* Disable the RNG Peripheral */ |
mbed_official | 181:a4cbdfbbd2f4 | 155 | __HAL_RNG_DISABLE(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 156 | |
mbed_official | 181:a4cbdfbbd2f4 | 157 | /* Set the RNG registers to their reset values */ |
mbed_official | 181:a4cbdfbbd2f4 | 158 | hrng->Instance->CR &= 0xFFFFFFF3; |
mbed_official | 181:a4cbdfbbd2f4 | 159 | hrng->Instance->SR &= 0xFFFFFF98; |
mbed_official | 181:a4cbdfbbd2f4 | 160 | hrng->Instance->DR &= 0x0; |
mbed_official | 181:a4cbdfbbd2f4 | 161 | |
mbed_official | 181:a4cbdfbbd2f4 | 162 | /* DeInit the low level hardware */ |
mbed_official | 181:a4cbdfbbd2f4 | 163 | HAL_RNG_MspDeInit(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 164 | |
mbed_official | 181:a4cbdfbbd2f4 | 165 | /* Update the RNG state */ |
mbed_official | 181:a4cbdfbbd2f4 | 166 | hrng->State = HAL_RNG_STATE_RESET; |
mbed_official | 181:a4cbdfbbd2f4 | 167 | |
mbed_official | 181:a4cbdfbbd2f4 | 168 | /* Release Lock */ |
mbed_official | 181:a4cbdfbbd2f4 | 169 | __HAL_UNLOCK(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 170 | |
mbed_official | 181:a4cbdfbbd2f4 | 171 | /* Return the function status */ |
mbed_official | 181:a4cbdfbbd2f4 | 172 | return HAL_OK; |
mbed_official | 181:a4cbdfbbd2f4 | 173 | } |
mbed_official | 181:a4cbdfbbd2f4 | 174 | |
mbed_official | 181:a4cbdfbbd2f4 | 175 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 176 | * @brief Initializes the RNG MSP. |
mbed_official | 181:a4cbdfbbd2f4 | 177 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 178 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 179 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 180 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 181 | __weak void HAL_RNG_MspInit(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 182 | { |
mbed_official | 181:a4cbdfbbd2f4 | 183 | /* NOTE : This function Should not be modified, when the callback is needed, |
mbed_official | 181:a4cbdfbbd2f4 | 184 | the HAL_RNG_MspInit could be implemented in the user file |
mbed_official | 181:a4cbdfbbd2f4 | 185 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 186 | } |
mbed_official | 181:a4cbdfbbd2f4 | 187 | |
mbed_official | 181:a4cbdfbbd2f4 | 188 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 189 | * @brief DeInitializes the RNG MSP. |
mbed_official | 181:a4cbdfbbd2f4 | 190 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 191 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 192 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 193 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 194 | __weak void HAL_RNG_MspDeInit(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 195 | { |
mbed_official | 181:a4cbdfbbd2f4 | 196 | /* NOTE : This function Should not be modified, when the callback is needed, |
mbed_official | 181:a4cbdfbbd2f4 | 197 | the HAL_RNG_MspDeInit could be implemented in the user file |
mbed_official | 181:a4cbdfbbd2f4 | 198 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 199 | } |
mbed_official | 181:a4cbdfbbd2f4 | 200 | |
mbed_official | 181:a4cbdfbbd2f4 | 201 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 202 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 203 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 204 | |
mbed_official | 181:a4cbdfbbd2f4 | 205 | /** @defgroup RNG_Group2 Peripheral Control functions |
mbed_official | 181:a4cbdfbbd2f4 | 206 | * @brief management functions. |
mbed_official | 181:a4cbdfbbd2f4 | 207 | * |
mbed_official | 181:a4cbdfbbd2f4 | 208 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 209 | =============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 210 | ##### Peripheral Control functions ##### |
mbed_official | 181:a4cbdfbbd2f4 | 211 | =============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 212 | [..] This section provides functions allowing to: |
mbed_official | 181:a4cbdfbbd2f4 | 213 | (+) Get the 32 bit Random number |
mbed_official | 181:a4cbdfbbd2f4 | 214 | (+) Get the 32 bit Random number with interrupt enabled |
mbed_official | 181:a4cbdfbbd2f4 | 215 | (+) Handle RNG interrupt request |
mbed_official | 181:a4cbdfbbd2f4 | 216 | |
mbed_official | 181:a4cbdfbbd2f4 | 217 | |
mbed_official | 181:a4cbdfbbd2f4 | 218 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 219 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 220 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 221 | |
mbed_official | 181:a4cbdfbbd2f4 | 222 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 223 | * @brief Returns a 32-bit random number. |
mbed_official | 181:a4cbdfbbd2f4 | 224 | * @note Each time the random number data is read the RNG_FLAG_DRDY flag |
mbed_official | 181:a4cbdfbbd2f4 | 225 | * is automatically cleared. |
mbed_official | 181:a4cbdfbbd2f4 | 226 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 227 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 228 | * @retval 32-bit random number |
mbed_official | 181:a4cbdfbbd2f4 | 229 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 230 | uint32_t HAL_RNG_GetRandomNumber(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 231 | { |
mbed_official | 181:a4cbdfbbd2f4 | 232 | uint32_t random32bit = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 233 | uint32_t tickstart = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 234 | |
mbed_official | 181:a4cbdfbbd2f4 | 235 | /* Process Locked */ |
mbed_official | 181:a4cbdfbbd2f4 | 236 | __HAL_LOCK(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 237 | |
mbed_official | 181:a4cbdfbbd2f4 | 238 | /* Get timeout */ |
mbed_official | 181:a4cbdfbbd2f4 | 239 | tickstart = HAL_GetTick(); |
mbed_official | 181:a4cbdfbbd2f4 | 240 | |
mbed_official | 181:a4cbdfbbd2f4 | 241 | /* Check if data register contains valid random data */ |
mbed_official | 181:a4cbdfbbd2f4 | 242 | while(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) == RESET) |
mbed_official | 181:a4cbdfbbd2f4 | 243 | { |
mbed_official | 181:a4cbdfbbd2f4 | 244 | if((HAL_GetTick() - tickstart ) > RNG_TIMEOUT_VALUE) |
mbed_official | 181:a4cbdfbbd2f4 | 245 | { |
mbed_official | 181:a4cbdfbbd2f4 | 246 | return HAL_TIMEOUT; |
mbed_official | 181:a4cbdfbbd2f4 | 247 | } |
mbed_official | 181:a4cbdfbbd2f4 | 248 | } |
mbed_official | 181:a4cbdfbbd2f4 | 249 | |
mbed_official | 181:a4cbdfbbd2f4 | 250 | /* Get a 32bit Random number */ |
mbed_official | 181:a4cbdfbbd2f4 | 251 | random32bit = hrng->Instance->DR; |
mbed_official | 181:a4cbdfbbd2f4 | 252 | |
mbed_official | 181:a4cbdfbbd2f4 | 253 | /* Process Unlocked */ |
mbed_official | 181:a4cbdfbbd2f4 | 254 | __HAL_UNLOCK(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 255 | |
mbed_official | 181:a4cbdfbbd2f4 | 256 | /* Return the 32 bit random number */ |
mbed_official | 181:a4cbdfbbd2f4 | 257 | return random32bit; |
mbed_official | 181:a4cbdfbbd2f4 | 258 | } |
mbed_official | 181:a4cbdfbbd2f4 | 259 | |
mbed_official | 181:a4cbdfbbd2f4 | 260 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 261 | * @brief Returns a 32-bit random number with interrupt enabled. |
mbed_official | 181:a4cbdfbbd2f4 | 262 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 263 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 264 | * @retval 32-bit random number |
mbed_official | 181:a4cbdfbbd2f4 | 265 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 266 | uint32_t HAL_RNG_GetRandomNumber_IT(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 267 | { |
mbed_official | 181:a4cbdfbbd2f4 | 268 | uint32_t random32bit = 0; |
mbed_official | 181:a4cbdfbbd2f4 | 269 | |
mbed_official | 181:a4cbdfbbd2f4 | 270 | /* Process Locked */ |
mbed_official | 181:a4cbdfbbd2f4 | 271 | __HAL_LOCK(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 272 | |
mbed_official | 181:a4cbdfbbd2f4 | 273 | /* Change RNG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 274 | hrng->State = HAL_RNG_STATE_BUSY; |
mbed_official | 181:a4cbdfbbd2f4 | 275 | |
mbed_official | 181:a4cbdfbbd2f4 | 276 | /* Get a 32bit Random number */ |
mbed_official | 181:a4cbdfbbd2f4 | 277 | random32bit = hrng->Instance->DR; |
mbed_official | 181:a4cbdfbbd2f4 | 278 | |
mbed_official | 181:a4cbdfbbd2f4 | 279 | /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */ |
mbed_official | 181:a4cbdfbbd2f4 | 280 | __HAL_RNG_ENABLE_IT(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 281 | |
mbed_official | 181:a4cbdfbbd2f4 | 282 | /* Return the 32 bit random number */ |
mbed_official | 181:a4cbdfbbd2f4 | 283 | return random32bit; |
mbed_official | 181:a4cbdfbbd2f4 | 284 | } |
mbed_official | 181:a4cbdfbbd2f4 | 285 | |
mbed_official | 181:a4cbdfbbd2f4 | 286 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 287 | * @brief Handles RNG interrupt request. |
mbed_official | 181:a4cbdfbbd2f4 | 288 | * @note In the case of a clock error, the RNG is no more able to generate |
mbed_official | 181:a4cbdfbbd2f4 | 289 | * random numbers because the PLL48CLK clock is not correct. User has |
mbed_official | 181:a4cbdfbbd2f4 | 290 | * to check that the clock controller is correctly configured to provide |
mbed_official | 181:a4cbdfbbd2f4 | 291 | * the RNG clock and clear the CEIS bit using __HAL_RNG_CLEAR_FLAG(). |
mbed_official | 181:a4cbdfbbd2f4 | 292 | * The clock error has no impact on the previously generated |
mbed_official | 181:a4cbdfbbd2f4 | 293 | * random numbers, and the RNG_DR register contents can be used. |
mbed_official | 181:a4cbdfbbd2f4 | 294 | * @note In the case of a seed error, the generation of random numbers is |
mbed_official | 181:a4cbdfbbd2f4 | 295 | * interrupted as long as the SECS bit is '1'. If a number is |
mbed_official | 181:a4cbdfbbd2f4 | 296 | * available in the RNG_DR register, it must not be used because it may |
mbed_official | 181:a4cbdfbbd2f4 | 297 | * not have enough entropy. In this case, it is recommended to clear the |
mbed_official | 181:a4cbdfbbd2f4 | 298 | * SEIS bit using __HAL_RNG_CLEAR_FLAG(), then disable and enable |
mbed_official | 181:a4cbdfbbd2f4 | 299 | * the RNG peripheral to reinitialize and restart the RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 300 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 301 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 302 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 303 | |
mbed_official | 181:a4cbdfbbd2f4 | 304 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 305 | void HAL_RNG_IRQHandler(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 306 | { |
mbed_official | 181:a4cbdfbbd2f4 | 307 | /* RNG clock error interrupt occurred */ |
mbed_official | 181:a4cbdfbbd2f4 | 308 | if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_CEI) != RESET) |
mbed_official | 181:a4cbdfbbd2f4 | 309 | { |
mbed_official | 181:a4cbdfbbd2f4 | 310 | HAL_RNG_ErrorCallback(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 311 | |
mbed_official | 181:a4cbdfbbd2f4 | 312 | /* Clear the clock error flag */ |
mbed_official | 181:a4cbdfbbd2f4 | 313 | __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_CEI); |
mbed_official | 181:a4cbdfbbd2f4 | 314 | |
mbed_official | 181:a4cbdfbbd2f4 | 315 | /* Change RNG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 316 | hrng->State = HAL_RNG_STATE_ERROR; |
mbed_official | 181:a4cbdfbbd2f4 | 317 | |
mbed_official | 181:a4cbdfbbd2f4 | 318 | /* Process Unlocked */ |
mbed_official | 181:a4cbdfbbd2f4 | 319 | __HAL_UNLOCK(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 320 | } |
mbed_official | 181:a4cbdfbbd2f4 | 321 | |
mbed_official | 181:a4cbdfbbd2f4 | 322 | /* RNG seed error interrupt occurred */ |
mbed_official | 181:a4cbdfbbd2f4 | 323 | if(__HAL_RNG_GET_FLAG(hrng, RNG_IT_SEI) != RESET) |
mbed_official | 181:a4cbdfbbd2f4 | 324 | { |
mbed_official | 181:a4cbdfbbd2f4 | 325 | HAL_RNG_ErrorCallback(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 326 | |
mbed_official | 181:a4cbdfbbd2f4 | 327 | /* Clear the seed error flag */ |
mbed_official | 181:a4cbdfbbd2f4 | 328 | __HAL_RNG_CLEAR_FLAG(hrng, RNG_IT_SEI); |
mbed_official | 181:a4cbdfbbd2f4 | 329 | |
mbed_official | 181:a4cbdfbbd2f4 | 330 | /* Change RNG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 331 | hrng->State = HAL_RNG_STATE_ERROR; |
mbed_official | 181:a4cbdfbbd2f4 | 332 | |
mbed_official | 181:a4cbdfbbd2f4 | 333 | /* Process Unlocked */ |
mbed_official | 181:a4cbdfbbd2f4 | 334 | __HAL_UNLOCK(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 335 | } |
mbed_official | 181:a4cbdfbbd2f4 | 336 | |
mbed_official | 181:a4cbdfbbd2f4 | 337 | /* Check RNG data ready flag */ |
mbed_official | 181:a4cbdfbbd2f4 | 338 | if(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) != RESET) |
mbed_official | 181:a4cbdfbbd2f4 | 339 | { |
mbed_official | 181:a4cbdfbbd2f4 | 340 | /* Data Ready callback */ |
mbed_official | 181:a4cbdfbbd2f4 | 341 | HAL_RNG_ReadyCallback(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 342 | |
mbed_official | 181:a4cbdfbbd2f4 | 343 | /* Change RNG peripheral state */ |
mbed_official | 181:a4cbdfbbd2f4 | 344 | hrng->State = HAL_RNG_STATE_READY; |
mbed_official | 181:a4cbdfbbd2f4 | 345 | |
mbed_official | 181:a4cbdfbbd2f4 | 346 | /* Clear the RNG Data Ready flag */ |
mbed_official | 181:a4cbdfbbd2f4 | 347 | __HAL_RNG_CLEAR_FLAG(hrng, RNG_FLAG_DRDY); |
mbed_official | 181:a4cbdfbbd2f4 | 348 | |
mbed_official | 181:a4cbdfbbd2f4 | 349 | /* Process Unlocked */ |
mbed_official | 181:a4cbdfbbd2f4 | 350 | __HAL_UNLOCK(hrng); |
mbed_official | 181:a4cbdfbbd2f4 | 351 | } |
mbed_official | 181:a4cbdfbbd2f4 | 352 | } |
mbed_official | 181:a4cbdfbbd2f4 | 353 | |
mbed_official | 181:a4cbdfbbd2f4 | 354 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 355 | * @brief Data Ready callback in non-blocking mode. |
mbed_official | 181:a4cbdfbbd2f4 | 356 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 357 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 358 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 359 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 360 | |
mbed_official | 181:a4cbdfbbd2f4 | 361 | __weak void HAL_RNG_ReadyCallback(RNG_HandleTypeDef* hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 362 | { |
mbed_official | 181:a4cbdfbbd2f4 | 363 | /* NOTE : This function Should not be modified, when the callback is needed, |
mbed_official | 181:a4cbdfbbd2f4 | 364 | the HAL_RNG_ReadyCallback could be implemented in the user file |
mbed_official | 181:a4cbdfbbd2f4 | 365 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 366 | } |
mbed_official | 181:a4cbdfbbd2f4 | 367 | |
mbed_official | 181:a4cbdfbbd2f4 | 368 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 369 | * @brief RNG error callbacks. |
mbed_official | 181:a4cbdfbbd2f4 | 370 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 371 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 372 | * @retval None |
mbed_official | 181:a4cbdfbbd2f4 | 373 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 374 | __weak void HAL_RNG_ErrorCallback(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 375 | { |
mbed_official | 181:a4cbdfbbd2f4 | 376 | /* NOTE : This function Should not be modified, when the callback is needed, |
mbed_official | 181:a4cbdfbbd2f4 | 377 | the HAL_RNG_ErrorCallback could be implemented in the user file |
mbed_official | 181:a4cbdfbbd2f4 | 378 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 379 | } |
mbed_official | 181:a4cbdfbbd2f4 | 380 | |
mbed_official | 181:a4cbdfbbd2f4 | 381 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 382 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 383 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 384 | |
mbed_official | 181:a4cbdfbbd2f4 | 385 | /** @defgroup RNG_Group3 Peripheral State functions |
mbed_official | 181:a4cbdfbbd2f4 | 386 | * @brief Peripheral State functions. |
mbed_official | 181:a4cbdfbbd2f4 | 387 | * |
mbed_official | 181:a4cbdfbbd2f4 | 388 | @verbatim |
mbed_official | 181:a4cbdfbbd2f4 | 389 | =============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 390 | ##### Peripheral State functions ##### |
mbed_official | 181:a4cbdfbbd2f4 | 391 | =============================================================================== |
mbed_official | 181:a4cbdfbbd2f4 | 392 | [..] |
mbed_official | 181:a4cbdfbbd2f4 | 393 | This subsection permits to get in run-time the status of the peripheral |
mbed_official | 181:a4cbdfbbd2f4 | 394 | and the data flow. |
mbed_official | 181:a4cbdfbbd2f4 | 395 | |
mbed_official | 181:a4cbdfbbd2f4 | 396 | @endverbatim |
mbed_official | 181:a4cbdfbbd2f4 | 397 | * @{ |
mbed_official | 181:a4cbdfbbd2f4 | 398 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 399 | |
mbed_official | 181:a4cbdfbbd2f4 | 400 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 401 | * @brief Returns the RNG state. |
mbed_official | 181:a4cbdfbbd2f4 | 402 | * @param hrng: pointer to a RNG_HandleTypeDef structure that contains |
mbed_official | 181:a4cbdfbbd2f4 | 403 | * the configuration information for RNG. |
mbed_official | 181:a4cbdfbbd2f4 | 404 | * @retval HAL state |
mbed_official | 181:a4cbdfbbd2f4 | 405 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 406 | HAL_RNG_StateTypeDef HAL_RNG_GetState(RNG_HandleTypeDef *hrng) |
mbed_official | 181:a4cbdfbbd2f4 | 407 | { |
mbed_official | 181:a4cbdfbbd2f4 | 408 | return hrng->State; |
mbed_official | 181:a4cbdfbbd2f4 | 409 | } |
mbed_official | 181:a4cbdfbbd2f4 | 410 | |
mbed_official | 181:a4cbdfbbd2f4 | 411 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 412 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 413 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 414 | |
mbed_official | 181:a4cbdfbbd2f4 | 415 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 416 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 417 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 418 | #endif /* STM32L051xx && STM32L061xx*/ |
mbed_official | 181:a4cbdfbbd2f4 | 419 | #endif /* HAL_RNG_MODULE_ENABLED */ |
mbed_official | 181:a4cbdfbbd2f4 | 420 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 421 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 422 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 423 | |
mbed_official | 181:a4cbdfbbd2f4 | 424 | /** |
mbed_official | 181:a4cbdfbbd2f4 | 425 | * @} |
mbed_official | 181:a4cbdfbbd2f4 | 426 | */ |
mbed_official | 181:a4cbdfbbd2f4 | 427 | |
mbed_official | 181:a4cbdfbbd2f4 | 428 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |
mbed_official | 181:a4cbdfbbd2f4 | 429 |