MacroRat / MouseCode

Mouse code for the MacroRat

Dependencies:   ITG3200 QEI

mbed-dev/targets/TARGET_STM/TARGET_STM32F2/device/stm32f2xx_hal_rng.c@46:b156ef445742, 2017-06-03 (annotated)

Committer:
sahilmgandhi
Date:
Sat Jun 03 00:22:44 2017 +0000
Revision:
46:b156ef445742
Parent:
18:6a4db94011d3 
Final code for internal battlebot competition.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sahilmgandhi 18:6a4db94011d3 1 /**
sahilmgandhi 18:6a4db94011d3 2 ******************************************************************************
sahilmgandhi 18:6a4db94011d3 3 * @file stm32f2xx_hal_rng.c
sahilmgandhi 18:6a4db94011d3 4 * @author MCD Application Team
sahilmgandhi 18:6a4db94011d3 5 * @version V1.1.3
sahilmgandhi 18:6a4db94011d3 6 * @date 29-June-2016
sahilmgandhi 18:6a4db94011d3 7 * @brief RNG HAL module driver.
sahilmgandhi 18:6a4db94011d3 8 * This file provides firmware functions to manage the following
sahilmgandhi 18:6a4db94011d3 9 * functionalities of the Random Number Generator (RNG) peripheral:
sahilmgandhi 18:6a4db94011d3 10 * + Initialization/de-initialization functions
sahilmgandhi 18:6a4db94011d3 11 * + Peripheral Control functions
sahilmgandhi 18:6a4db94011d3 12 * + Peripheral State functions
sahilmgandhi 18:6a4db94011d3 13 *
sahilmgandhi 18:6a4db94011d3 14 @verbatim
sahilmgandhi 18:6a4db94011d3 15 ==============================================================================
sahilmgandhi 18:6a4db94011d3 16 ##### How to use this driver #####
sahilmgandhi 18:6a4db94011d3 17 ==============================================================================
sahilmgandhi 18:6a4db94011d3 18 [..]
sahilmgandhi 18:6a4db94011d3 19 The RNG HAL driver can be used as follows:
sahilmgandhi 18:6a4db94011d3 20
sahilmgandhi 18:6a4db94011d3 21 (#) Enable the RNG controller clock using __HAL_RCC_RNG_CLK_ENABLE() macro
sahilmgandhi 18:6a4db94011d3 22 in HAL_RNG_MspInit().
sahilmgandhi 18:6a4db94011d3 23 (#) Activate the RNG peripheral using HAL_RNG_Init() function.
sahilmgandhi 18:6a4db94011d3 24 (#) Wait until the 32 bit Random Number Generator contains a valid
sahilmgandhi 18:6a4db94011d3 25 random data using (polling/interrupt) mode.
sahilmgandhi 18:6a4db94011d3 26 (#) Get the 32 bit random number using HAL_RNG_GenerateRandomNumber() function.
sahilmgandhi 18:6a4db94011d3 27
sahilmgandhi 18:6a4db94011d3 28 @endverbatim
sahilmgandhi 18:6a4db94011d3 29 ******************************************************************************
sahilmgandhi 18:6a4db94011d3 30 * @attention
sahilmgandhi 18:6a4db94011d3 31 *
sahilmgandhi 18:6a4db94011d3 32 * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
sahilmgandhi 18:6a4db94011d3 33 *
sahilmgandhi 18:6a4db94011d3 34 * Redistribution and use in source and binary forms, with or without modification,
sahilmgandhi 18:6a4db94011d3 35 * are permitted provided that the following conditions are met:
sahilmgandhi 18:6a4db94011d3 36 * 1. Redistributions of source code must retain the above copyright notice,
sahilmgandhi 18:6a4db94011d3 37 * this list of conditions and the following disclaimer.
sahilmgandhi 18:6a4db94011d3 38 * 2. Redistributions in binary form must reproduce the above copyright notice,
sahilmgandhi 18:6a4db94011d3 39 * this list of conditions and the following disclaimer in the documentation
sahilmgandhi 18:6a4db94011d3 40 * and/or other materials provided with the distribution.
sahilmgandhi 18:6a4db94011d3 41 * 3. Neither the name of STMicroelectronics nor the names of its contributors
sahilmgandhi 18:6a4db94011d3 42 * may be used to endorse or promote products derived from this software
sahilmgandhi 18:6a4db94011d3 43 * without specific prior written permission.
sahilmgandhi 18:6a4db94011d3 44 *
sahilmgandhi 18:6a4db94011d3 45 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
sahilmgandhi 18:6a4db94011d3 46 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sahilmgandhi 18:6a4db94011d3 47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
sahilmgandhi 18:6a4db94011d3 48 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
sahilmgandhi 18:6a4db94011d3 49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sahilmgandhi 18:6a4db94011d3 50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
sahilmgandhi 18:6a4db94011d3 51 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
sahilmgandhi 18:6a4db94011d3 52 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
sahilmgandhi 18:6a4db94011d3 53 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
sahilmgandhi 18:6a4db94011d3 54 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
sahilmgandhi 18:6a4db94011d3 55 *
sahilmgandhi 18:6a4db94011d3 56 ******************************************************************************
sahilmgandhi 18:6a4db94011d3 57 */
sahilmgandhi 18:6a4db94011d3 58
sahilmgandhi 18:6a4db94011d3 59 /* Includes ------------------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 60 #include "stm32f2xx_hal.h"
sahilmgandhi 18:6a4db94011d3 61
sahilmgandhi 18:6a4db94011d3 62 /** @addtogroup STM32F2xx_HAL_Driver
sahilmgandhi 18:6a4db94011d3 63 * @{
sahilmgandhi 18:6a4db94011d3 64 */
sahilmgandhi 18:6a4db94011d3 65
sahilmgandhi 18:6a4db94011d3 66 /** @addtogroup RNG
sahilmgandhi 18:6a4db94011d3 67 * @{
sahilmgandhi 18:6a4db94011d3 68 */
sahilmgandhi 18:6a4db94011d3 69
sahilmgandhi 18:6a4db94011d3 70 #ifdef HAL_RNG_MODULE_ENABLED
sahilmgandhi 18:6a4db94011d3 71
sahilmgandhi 18:6a4db94011d3 72
sahilmgandhi 18:6a4db94011d3 73 /* Private types -------------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 74 /* Private defines -----------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 75 /* Private variables ---------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 76 /* Private constants ---------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 77 /** @addtogroup RNG_Private_Constants
sahilmgandhi 18:6a4db94011d3 78 * @{
sahilmgandhi 18:6a4db94011d3 79 */
sahilmgandhi 18:6a4db94011d3 80 #define RNG_TIMEOUT_VALUE 2U
sahilmgandhi 18:6a4db94011d3 81 /**
sahilmgandhi 18:6a4db94011d3 82 * @}
sahilmgandhi 18:6a4db94011d3 83 */
sahilmgandhi 18:6a4db94011d3 84 /* Private macros ------------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 85 /* Private functions prototypes ----------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 86 /* Private functions ---------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 87 /* Exported functions --------------------------------------------------------*/
sahilmgandhi 18:6a4db94011d3 88
sahilmgandhi 18:6a4db94011d3 89 /** @addtogroup RNG_Exported_Functions
sahilmgandhi 18:6a4db94011d3 90 * @{
sahilmgandhi 18:6a4db94011d3 91 */
sahilmgandhi 18:6a4db94011d3 92
sahilmgandhi 18:6a4db94011d3 93 /** @addtogroup RNG_Exported_Functions_Group1
sahilmgandhi 18:6a4db94011d3 94 * @brief Initialization and de-initialization functions
sahilmgandhi 18:6a4db94011d3 95 *
sahilmgandhi 18:6a4db94011d3 96 @verbatim
sahilmgandhi 18:6a4db94011d3 97 ===============================================================================
sahilmgandhi 18:6a4db94011d3 98 ##### Initialization and de-initialization functions #####
sahilmgandhi 18:6a4db94011d3 99 ===============================================================================
sahilmgandhi 18:6a4db94011d3 100 [..] This section provides functions allowing to:
sahilmgandhi 18:6a4db94011d3 101 (+) Initialize the RNG according to the specified parameters
sahilmgandhi 18:6a4db94011d3 102 in the RNG_InitTypeDef and create the associated handle
sahilmgandhi 18:6a4db94011d3 103 (+) DeInitialize the RNG peripheral
sahilmgandhi 18:6a4db94011d3 104 (+) Initialize the RNG MSP
sahilmgandhi 18:6a4db94011d3 105 (+) DeInitialize RNG MSP
sahilmgandhi 18:6a4db94011d3 106
sahilmgandhi 18:6a4db94011d3 107 @endverbatim
sahilmgandhi 18:6a4db94011d3 108 * @{
sahilmgandhi 18:6a4db94011d3 109 */
sahilmgandhi 18:6a4db94011d3 110
sahilmgandhi 18:6a4db94011d3 111 /**
sahilmgandhi 18:6a4db94011d3 112 * @brief Initializes the RNG peripheral and creates the associated handle.
sahilmgandhi 18:6a4db94011d3 113 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 114 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 115 * @retval HAL status
sahilmgandhi 18:6a4db94011d3 116 */
sahilmgandhi 18:6a4db94011d3 117 HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 118 {
sahilmgandhi 18:6a4db94011d3 119 /* Check the RNG handle allocation */
sahilmgandhi 18:6a4db94011d3 120 if(hrng == NULL)
sahilmgandhi 18:6a4db94011d3 121 {
sahilmgandhi 18:6a4db94011d3 122 return HAL_ERROR;
sahilmgandhi 18:6a4db94011d3 123 }
sahilmgandhi 18:6a4db94011d3 124
sahilmgandhi 18:6a4db94011d3 125 __HAL_LOCK(hrng);
sahilmgandhi 18:6a4db94011d3 126
sahilmgandhi 18:6a4db94011d3 127 if(hrng->State == HAL_RNG_STATE_RESET)
sahilmgandhi 18:6a4db94011d3 128 {
sahilmgandhi 18:6a4db94011d3 129 /* Allocate lock resource and initialize it */
sahilmgandhi 18:6a4db94011d3 130 hrng->Lock = HAL_UNLOCKED;
sahilmgandhi 18:6a4db94011d3 131 /* Init the low level hardware */
sahilmgandhi 18:6a4db94011d3 132 HAL_RNG_MspInit(hrng);
sahilmgandhi 18:6a4db94011d3 133 }
sahilmgandhi 18:6a4db94011d3 134
sahilmgandhi 18:6a4db94011d3 135 /* Change RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 136 hrng->State = HAL_RNG_STATE_BUSY;
sahilmgandhi 18:6a4db94011d3 137
sahilmgandhi 18:6a4db94011d3 138 /* Enable the RNG Peripheral */
sahilmgandhi 18:6a4db94011d3 139 __HAL_RNG_ENABLE(hrng);
sahilmgandhi 18:6a4db94011d3 140
sahilmgandhi 18:6a4db94011d3 141 /* Initialize the RNG state */
sahilmgandhi 18:6a4db94011d3 142 hrng->State = HAL_RNG_STATE_READY;
sahilmgandhi 18:6a4db94011d3 143
sahilmgandhi 18:6a4db94011d3 144 __HAL_UNLOCK(hrng);
sahilmgandhi 18:6a4db94011d3 145
sahilmgandhi 18:6a4db94011d3 146 /* Return function status */
sahilmgandhi 18:6a4db94011d3 147 return HAL_OK;
sahilmgandhi 18:6a4db94011d3 148 }
sahilmgandhi 18:6a4db94011d3 149
sahilmgandhi 18:6a4db94011d3 150 /**
sahilmgandhi 18:6a4db94011d3 151 * @brief DeInitializes the RNG peripheral.
sahilmgandhi 18:6a4db94011d3 152 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 153 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 154 * @retval HAL status
sahilmgandhi 18:6a4db94011d3 155 */
sahilmgandhi 18:6a4db94011d3 156 HAL_StatusTypeDef HAL_RNG_DeInit(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 157 {
sahilmgandhi 18:6a4db94011d3 158 /* Check the RNG handle allocation */
sahilmgandhi 18:6a4db94011d3 159 if(hrng == NULL)
sahilmgandhi 18:6a4db94011d3 160 {
sahilmgandhi 18:6a4db94011d3 161 return HAL_ERROR;
sahilmgandhi 18:6a4db94011d3 162 }
sahilmgandhi 18:6a4db94011d3 163 /* Disable the RNG Peripheral */
sahilmgandhi 18:6a4db94011d3 164 CLEAR_BIT(hrng->Instance->CR, RNG_CR_IE | RNG_CR_RNGEN);
sahilmgandhi 18:6a4db94011d3 165
sahilmgandhi 18:6a4db94011d3 166 /* Clear RNG interrupt status flags */
sahilmgandhi 18:6a4db94011d3 167 CLEAR_BIT(hrng->Instance->SR, RNG_SR_CEIS | RNG_SR_SEIS);
sahilmgandhi 18:6a4db94011d3 168
sahilmgandhi 18:6a4db94011d3 169 /* DeInit the low level hardware */
sahilmgandhi 18:6a4db94011d3 170 HAL_RNG_MspDeInit(hrng);
sahilmgandhi 18:6a4db94011d3 171
sahilmgandhi 18:6a4db94011d3 172 /* Update the RNG state */
sahilmgandhi 18:6a4db94011d3 173 hrng->State = HAL_RNG_STATE_RESET;
sahilmgandhi 18:6a4db94011d3 174
sahilmgandhi 18:6a4db94011d3 175 /* Release Lock */
sahilmgandhi 18:6a4db94011d3 176 __HAL_UNLOCK(hrng);
sahilmgandhi 18:6a4db94011d3 177
sahilmgandhi 18:6a4db94011d3 178 /* Return the function status */
sahilmgandhi 18:6a4db94011d3 179 return HAL_OK;
sahilmgandhi 18:6a4db94011d3 180 }
sahilmgandhi 18:6a4db94011d3 181
sahilmgandhi 18:6a4db94011d3 182 /**
sahilmgandhi 18:6a4db94011d3 183 * @brief Initializes the RNG MSP.
sahilmgandhi 18:6a4db94011d3 184 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 185 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 186 * @retval None
sahilmgandhi 18:6a4db94011d3 187 */
sahilmgandhi 18:6a4db94011d3 188 __weak void HAL_RNG_MspInit(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 189 {
sahilmgandhi 18:6a4db94011d3 190 /* Prevent unused argument(s) compilation warning */
sahilmgandhi 18:6a4db94011d3 191 UNUSED(hrng);
sahilmgandhi 18:6a4db94011d3 192 /* NOTE : This function should not be modified. When the callback is needed,
sahilmgandhi 18:6a4db94011d3 193 function HAL_RNG_MspInit must be implemented in the user file.
sahilmgandhi 18:6a4db94011d3 194 */
sahilmgandhi 18:6a4db94011d3 195 }
sahilmgandhi 18:6a4db94011d3 196
sahilmgandhi 18:6a4db94011d3 197 /**
sahilmgandhi 18:6a4db94011d3 198 * @brief DeInitializes the RNG MSP.
sahilmgandhi 18:6a4db94011d3 199 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 200 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 201 * @retval None
sahilmgandhi 18:6a4db94011d3 202 */
sahilmgandhi 18:6a4db94011d3 203 __weak void HAL_RNG_MspDeInit(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 204 {
sahilmgandhi 18:6a4db94011d3 205 /* Prevent unused argument(s) compilation warning */
sahilmgandhi 18:6a4db94011d3 206 UNUSED(hrng);
sahilmgandhi 18:6a4db94011d3 207 /* NOTE : This function should not be modified. When the callback is needed,
sahilmgandhi 18:6a4db94011d3 208 function HAL_RNG_MspDeInit must be implemented in the user file.
sahilmgandhi 18:6a4db94011d3 209 */
sahilmgandhi 18:6a4db94011d3 210 }
sahilmgandhi 18:6a4db94011d3 211
sahilmgandhi 18:6a4db94011d3 212 /**
sahilmgandhi 18:6a4db94011d3 213 * @}
sahilmgandhi 18:6a4db94011d3 214 */
sahilmgandhi 18:6a4db94011d3 215
sahilmgandhi 18:6a4db94011d3 216 /** @addtogroup RNG_Exported_Functions_Group2
sahilmgandhi 18:6a4db94011d3 217 * @brief Peripheral Control functions
sahilmgandhi 18:6a4db94011d3 218 *
sahilmgandhi 18:6a4db94011d3 219 @verbatim
sahilmgandhi 18:6a4db94011d3 220 ===============================================================================
sahilmgandhi 18:6a4db94011d3 221 ##### Peripheral Control functions #####
sahilmgandhi 18:6a4db94011d3 222 ===============================================================================
sahilmgandhi 18:6a4db94011d3 223 [..] This section provides functions allowing to:
sahilmgandhi 18:6a4db94011d3 224 (+) Get the 32 bit Random number
sahilmgandhi 18:6a4db94011d3 225 (+) Get the 32 bit Random number with interrupt enabled
sahilmgandhi 18:6a4db94011d3 226 (+) Handle RNG interrupt request
sahilmgandhi 18:6a4db94011d3 227
sahilmgandhi 18:6a4db94011d3 228 @endverbatim
sahilmgandhi 18:6a4db94011d3 229 * @{
sahilmgandhi 18:6a4db94011d3 230 */
sahilmgandhi 18:6a4db94011d3 231
sahilmgandhi 18:6a4db94011d3 232 /**
sahilmgandhi 18:6a4db94011d3 233 * @brief Generates a 32-bit random number.
sahilmgandhi 18:6a4db94011d3 234 * @note Each time the random number data is read the RNG_FLAG_DRDY flag
sahilmgandhi 18:6a4db94011d3 235 * is automatically cleared.
sahilmgandhi 18:6a4db94011d3 236 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 237 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 238 * @param random32bit: pointer to generated random number variable if successful.
sahilmgandhi 18:6a4db94011d3 239 * @retval HAL status
sahilmgandhi 18:6a4db94011d3 240 */
sahilmgandhi 18:6a4db94011d3 241
sahilmgandhi 18:6a4db94011d3 242 HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber(RNG_HandleTypeDef *hrng, uint32_t *random32bit)
sahilmgandhi 18:6a4db94011d3 243 {
sahilmgandhi 18:6a4db94011d3 244 uint32_t tickstart = 0U;
sahilmgandhi 18:6a4db94011d3 245 HAL_StatusTypeDef status = HAL_OK;
sahilmgandhi 18:6a4db94011d3 246
sahilmgandhi 18:6a4db94011d3 247 /* Process Locked */
sahilmgandhi 18:6a4db94011d3 248 __HAL_LOCK(hrng);
sahilmgandhi 18:6a4db94011d3 249
sahilmgandhi 18:6a4db94011d3 250 /* Check RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 251 if(hrng->State == HAL_RNG_STATE_READY)
sahilmgandhi 18:6a4db94011d3 252 {
sahilmgandhi 18:6a4db94011d3 253 /* Change RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 254 hrng->State = HAL_RNG_STATE_BUSY;
sahilmgandhi 18:6a4db94011d3 255
sahilmgandhi 18:6a4db94011d3 256 /* Get tick */
sahilmgandhi 18:6a4db94011d3 257 tickstart = HAL_GetTick();
sahilmgandhi 18:6a4db94011d3 258
sahilmgandhi 18:6a4db94011d3 259 /* Check if data register contains valid random data */
sahilmgandhi 18:6a4db94011d3 260 while(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) == RESET)
sahilmgandhi 18:6a4db94011d3 261 {
sahilmgandhi 18:6a4db94011d3 262 if((HAL_GetTick() - tickstart ) > RNG_TIMEOUT_VALUE)
sahilmgandhi 18:6a4db94011d3 263 {
sahilmgandhi 18:6a4db94011d3 264 hrng->State = HAL_RNG_STATE_ERROR;
sahilmgandhi 18:6a4db94011d3 265
sahilmgandhi 18:6a4db94011d3 266 /* Process Unlocked */
sahilmgandhi 18:6a4db94011d3 267 __HAL_UNLOCK(hrng);
sahilmgandhi 18:6a4db94011d3 268
sahilmgandhi 18:6a4db94011d3 269 return HAL_TIMEOUT;
sahilmgandhi 18:6a4db94011d3 270 }
sahilmgandhi 18:6a4db94011d3 271 }
sahilmgandhi 18:6a4db94011d3 272
sahilmgandhi 18:6a4db94011d3 273 /* Get a 32bit Random number */
sahilmgandhi 18:6a4db94011d3 274 hrng->RandomNumber = hrng->Instance->DR;
sahilmgandhi 18:6a4db94011d3 275 *random32bit = hrng->RandomNumber;
sahilmgandhi 18:6a4db94011d3 276
sahilmgandhi 18:6a4db94011d3 277 hrng->State = HAL_RNG_STATE_READY;
sahilmgandhi 18:6a4db94011d3 278 }
sahilmgandhi 18:6a4db94011d3 279 else
sahilmgandhi 18:6a4db94011d3 280 {
sahilmgandhi 18:6a4db94011d3 281 status = HAL_ERROR;
sahilmgandhi 18:6a4db94011d3 282 }
sahilmgandhi 18:6a4db94011d3 283
sahilmgandhi 18:6a4db94011d3 284 /* Process Unlocked */
sahilmgandhi 18:6a4db94011d3 285 __HAL_UNLOCK(hrng);
sahilmgandhi 18:6a4db94011d3 286
sahilmgandhi 18:6a4db94011d3 287 return status;
sahilmgandhi 18:6a4db94011d3 288 }
sahilmgandhi 18:6a4db94011d3 289
sahilmgandhi 18:6a4db94011d3 290 /**
sahilmgandhi 18:6a4db94011d3 291 * @brief Generates a 32-bit random number in interrupt mode.
sahilmgandhi 18:6a4db94011d3 292 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 293 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 294 * @retval HAL status
sahilmgandhi 18:6a4db94011d3 295 */
sahilmgandhi 18:6a4db94011d3 296 HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber_IT(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 297 {
sahilmgandhi 18:6a4db94011d3 298 HAL_StatusTypeDef status = HAL_OK;
sahilmgandhi 18:6a4db94011d3 299
sahilmgandhi 18:6a4db94011d3 300 /* Process Locked */
sahilmgandhi 18:6a4db94011d3 301 __HAL_LOCK(hrng);
sahilmgandhi 18:6a4db94011d3 302
sahilmgandhi 18:6a4db94011d3 303 /* Check RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 304 if(hrng->State == HAL_RNG_STATE_READY)
sahilmgandhi 18:6a4db94011d3 305 {
sahilmgandhi 18:6a4db94011d3 306 /* Change RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 307 hrng->State = HAL_RNG_STATE_BUSY;
sahilmgandhi 18:6a4db94011d3 308
sahilmgandhi 18:6a4db94011d3 309 /* Process Unlocked */
sahilmgandhi 18:6a4db94011d3 310 __HAL_UNLOCK(hrng);
sahilmgandhi 18:6a4db94011d3 311
sahilmgandhi 18:6a4db94011d3 312 /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */
sahilmgandhi 18:6a4db94011d3 313 __HAL_RNG_ENABLE_IT(hrng);
sahilmgandhi 18:6a4db94011d3 314 }
sahilmgandhi 18:6a4db94011d3 315 else
sahilmgandhi 18:6a4db94011d3 316 {
sahilmgandhi 18:6a4db94011d3 317 /* Process Unlocked */
sahilmgandhi 18:6a4db94011d3 318 __HAL_UNLOCK(hrng);
sahilmgandhi 18:6a4db94011d3 319
sahilmgandhi 18:6a4db94011d3 320 status = HAL_ERROR;
sahilmgandhi 18:6a4db94011d3 321 }
sahilmgandhi 18:6a4db94011d3 322
sahilmgandhi 18:6a4db94011d3 323 return status;
sahilmgandhi 18:6a4db94011d3 324 }
sahilmgandhi 18:6a4db94011d3 325
sahilmgandhi 18:6a4db94011d3 326 /**
sahilmgandhi 18:6a4db94011d3 327 * @brief Handles RNG interrupt request.
sahilmgandhi 18:6a4db94011d3 328 * @note In the case of a clock error, the RNG is no more able to generate
sahilmgandhi 18:6a4db94011d3 329 * random numbers because the PLL48CLK clock is not correct. User has
sahilmgandhi 18:6a4db94011d3 330 * to check that the clock controller is correctly configured to provide
sahilmgandhi 18:6a4db94011d3 331 * the RNG clock and clear the CEIS bit using __HAL_RNG_CLEAR_IT().
sahilmgandhi 18:6a4db94011d3 332 * The clock error has no impact on the previously generated
sahilmgandhi 18:6a4db94011d3 333 * random numbers, and the RNG_DR register contents can be used.
sahilmgandhi 18:6a4db94011d3 334 * @note In the case of a seed error, the generation of random numbers is
sahilmgandhi 18:6a4db94011d3 335 * interrupted as long as the SECS bit is '1'. If a number is
sahilmgandhi 18:6a4db94011d3 336 * available in the RNG_DR register, it must not be used because it may
sahilmgandhi 18:6a4db94011d3 337 * not have enough entropy. In this case, it is recommended to clear the
sahilmgandhi 18:6a4db94011d3 338 * SEIS bit using __HAL_RNG_CLEAR_IT(), then disable and enable
sahilmgandhi 18:6a4db94011d3 339 * the RNG peripheral to reinitialize and restart the RNG.
sahilmgandhi 18:6a4db94011d3 340 * @note User-written HAL_RNG_ErrorCallback() API is called once whether SEIS
sahilmgandhi 18:6a4db94011d3 341 * or CEIS are set.
sahilmgandhi 18:6a4db94011d3 342 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 343 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 344 * @retval None
sahilmgandhi 18:6a4db94011d3 345
sahilmgandhi 18:6a4db94011d3 346 */
sahilmgandhi 18:6a4db94011d3 347 void HAL_RNG_IRQHandler(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 348 {
sahilmgandhi 18:6a4db94011d3 349 /* RNG clock error interrupt occurred */
sahilmgandhi 18:6a4db94011d3 350 if((__HAL_RNG_GET_IT(hrng, RNG_IT_CEI) != RESET) || (__HAL_RNG_GET_IT(hrng, RNG_IT_SEI) != RESET))
sahilmgandhi 18:6a4db94011d3 351 {
sahilmgandhi 18:6a4db94011d3 352 /* Change RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 353 hrng->State = HAL_RNG_STATE_ERROR;
sahilmgandhi 18:6a4db94011d3 354
sahilmgandhi 18:6a4db94011d3 355 HAL_RNG_ErrorCallback(hrng);
sahilmgandhi 18:6a4db94011d3 356
sahilmgandhi 18:6a4db94011d3 357 /* Clear the clock error flag */
sahilmgandhi 18:6a4db94011d3 358 __HAL_RNG_CLEAR_IT(hrng, RNG_IT_CEI|RNG_IT_SEI);
sahilmgandhi 18:6a4db94011d3 359
sahilmgandhi 18:6a4db94011d3 360 }
sahilmgandhi 18:6a4db94011d3 361
sahilmgandhi 18:6a4db94011d3 362 /* Check RNG data ready interrupt occurred */
sahilmgandhi 18:6a4db94011d3 363 if(__HAL_RNG_GET_IT(hrng, RNG_IT_DRDY) != RESET)
sahilmgandhi 18:6a4db94011d3 364 {
sahilmgandhi 18:6a4db94011d3 365 /* Generate random number once, so disable the IT */
sahilmgandhi 18:6a4db94011d3 366 __HAL_RNG_DISABLE_IT(hrng);
sahilmgandhi 18:6a4db94011d3 367
sahilmgandhi 18:6a4db94011d3 368 /* Get the 32bit Random number (DRDY flag automatically cleared) */
sahilmgandhi 18:6a4db94011d3 369 hrng->RandomNumber = hrng->Instance->DR;
sahilmgandhi 18:6a4db94011d3 370
sahilmgandhi 18:6a4db94011d3 371 if(hrng->State != HAL_RNG_STATE_ERROR)
sahilmgandhi 18:6a4db94011d3 372 {
sahilmgandhi 18:6a4db94011d3 373 /* Change RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 374 hrng->State = HAL_RNG_STATE_READY;
sahilmgandhi 18:6a4db94011d3 375
sahilmgandhi 18:6a4db94011d3 376 /* Data Ready callback */
sahilmgandhi 18:6a4db94011d3 377 HAL_RNG_ReadyDataCallback(hrng, hrng->RandomNumber);
sahilmgandhi 18:6a4db94011d3 378 }
sahilmgandhi 18:6a4db94011d3 379 }
sahilmgandhi 18:6a4db94011d3 380 }
sahilmgandhi 18:6a4db94011d3 381
sahilmgandhi 18:6a4db94011d3 382 /**
sahilmgandhi 18:6a4db94011d3 383 * @brief Returns generated random number in polling mode (Obsolete)
sahilmgandhi 18:6a4db94011d3 384 * Use HAL_RNG_GenerateRandomNumber() API instead.
sahilmgandhi 18:6a4db94011d3 385 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 386 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 387 * @retval Random value
sahilmgandhi 18:6a4db94011d3 388 */
sahilmgandhi 18:6a4db94011d3 389 uint32_t HAL_RNG_GetRandomNumber(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 390 {
sahilmgandhi 18:6a4db94011d3 391 if(HAL_RNG_GenerateRandomNumber(hrng, &(hrng->RandomNumber)) == HAL_OK)
sahilmgandhi 18:6a4db94011d3 392 {
sahilmgandhi 18:6a4db94011d3 393 return hrng->RandomNumber;
sahilmgandhi 18:6a4db94011d3 394 }
sahilmgandhi 18:6a4db94011d3 395 else
sahilmgandhi 18:6a4db94011d3 396 {
sahilmgandhi 18:6a4db94011d3 397 return 0U;
sahilmgandhi 18:6a4db94011d3 398 }
sahilmgandhi 18:6a4db94011d3 399 }
sahilmgandhi 18:6a4db94011d3 400
sahilmgandhi 18:6a4db94011d3 401 /**
sahilmgandhi 18:6a4db94011d3 402 * @brief Returns a 32-bit random number with interrupt enabled (Obsolete),
sahilmgandhi 18:6a4db94011d3 403 * Use HAL_RNG_GenerateRandomNumber_IT() API instead.
sahilmgandhi 18:6a4db94011d3 404 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 405 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 406 * @retval 32-bit random number
sahilmgandhi 18:6a4db94011d3 407 */
sahilmgandhi 18:6a4db94011d3 408 uint32_t HAL_RNG_GetRandomNumber_IT(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 409 {
sahilmgandhi 18:6a4db94011d3 410 uint32_t random32bit = 0U;
sahilmgandhi 18:6a4db94011d3 411
sahilmgandhi 18:6a4db94011d3 412 /* Process locked */
sahilmgandhi 18:6a4db94011d3 413 __HAL_LOCK(hrng);
sahilmgandhi 18:6a4db94011d3 414
sahilmgandhi 18:6a4db94011d3 415 /* Change RNG peripheral state */
sahilmgandhi 18:6a4db94011d3 416 hrng->State = HAL_RNG_STATE_BUSY;
sahilmgandhi 18:6a4db94011d3 417
sahilmgandhi 18:6a4db94011d3 418 /* Get a 32bit Random number */
sahilmgandhi 18:6a4db94011d3 419 random32bit = hrng->Instance->DR;
sahilmgandhi 18:6a4db94011d3 420
sahilmgandhi 18:6a4db94011d3 421 /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */
sahilmgandhi 18:6a4db94011d3 422 __HAL_RNG_ENABLE_IT(hrng);
sahilmgandhi 18:6a4db94011d3 423
sahilmgandhi 18:6a4db94011d3 424 /* Return the 32 bit random number */
sahilmgandhi 18:6a4db94011d3 425 return random32bit;
sahilmgandhi 18:6a4db94011d3 426 }
sahilmgandhi 18:6a4db94011d3 427
sahilmgandhi 18:6a4db94011d3 428 /**
sahilmgandhi 18:6a4db94011d3 429 * @brief Read latest generated random number.
sahilmgandhi 18:6a4db94011d3 430 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 431 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 432 * @retval random value
sahilmgandhi 18:6a4db94011d3 433 */
sahilmgandhi 18:6a4db94011d3 434 uint32_t HAL_RNG_ReadLastRandomNumber(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 435 {
sahilmgandhi 18:6a4db94011d3 436 return(hrng->RandomNumber);
sahilmgandhi 18:6a4db94011d3 437 }
sahilmgandhi 18:6a4db94011d3 438
sahilmgandhi 18:6a4db94011d3 439 /**
sahilmgandhi 18:6a4db94011d3 440 * @brief Data Ready callback in non-blocking mode.
sahilmgandhi 18:6a4db94011d3 441 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 442 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 443 * @param random32bit: generated random number.
sahilmgandhi 18:6a4db94011d3 444 * @retval None
sahilmgandhi 18:6a4db94011d3 445 */
sahilmgandhi 18:6a4db94011d3 446 __weak void HAL_RNG_ReadyDataCallback(RNG_HandleTypeDef *hrng, uint32_t random32bit)
sahilmgandhi 18:6a4db94011d3 447 {
sahilmgandhi 18:6a4db94011d3 448 /* Prevent unused argument(s) compilation warning */
sahilmgandhi 18:6a4db94011d3 449 UNUSED(hrng);
sahilmgandhi 18:6a4db94011d3 450 UNUSED(random32bit);
sahilmgandhi 18:6a4db94011d3 451 /* NOTE : This function should not be modified. When the callback is needed,
sahilmgandhi 18:6a4db94011d3 452 function HAL_RNG_ReadyDataCallback must be implemented in the user file.
sahilmgandhi 18:6a4db94011d3 453 */
sahilmgandhi 18:6a4db94011d3 454 }
sahilmgandhi 18:6a4db94011d3 455
sahilmgandhi 18:6a4db94011d3 456 /**
sahilmgandhi 18:6a4db94011d3 457 * @brief RNG error callbacks.
sahilmgandhi 18:6a4db94011d3 458 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 459 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 460 * @retval None
sahilmgandhi 18:6a4db94011d3 461 */
sahilmgandhi 18:6a4db94011d3 462 __weak void HAL_RNG_ErrorCallback(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 463 {
sahilmgandhi 18:6a4db94011d3 464 /* Prevent unused argument(s) compilation warning */
sahilmgandhi 18:6a4db94011d3 465 UNUSED(hrng);
sahilmgandhi 18:6a4db94011d3 466 /* NOTE : This function should not be modified. When the callback is needed,
sahilmgandhi 18:6a4db94011d3 467 function HAL_RNG_ErrorCallback must be implemented in the user file.
sahilmgandhi 18:6a4db94011d3 468 */
sahilmgandhi 18:6a4db94011d3 469 }
sahilmgandhi 18:6a4db94011d3 470 /**
sahilmgandhi 18:6a4db94011d3 471 * @}
sahilmgandhi 18:6a4db94011d3 472 */
sahilmgandhi 18:6a4db94011d3 473
sahilmgandhi 18:6a4db94011d3 474
sahilmgandhi 18:6a4db94011d3 475 /** @addtogroup RNG_Exported_Functions_Group3
sahilmgandhi 18:6a4db94011d3 476 * @brief Peripheral State functions
sahilmgandhi 18:6a4db94011d3 477 *
sahilmgandhi 18:6a4db94011d3 478 @verbatim
sahilmgandhi 18:6a4db94011d3 479 ===============================================================================
sahilmgandhi 18:6a4db94011d3 480 ##### Peripheral State functions #####
sahilmgandhi 18:6a4db94011d3 481 ===============================================================================
sahilmgandhi 18:6a4db94011d3 482 [..]
sahilmgandhi 18:6a4db94011d3 483 This subsection permits to get in run-time the status of the peripheral
sahilmgandhi 18:6a4db94011d3 484 and the data flow.
sahilmgandhi 18:6a4db94011d3 485
sahilmgandhi 18:6a4db94011d3 486 @endverbatim
sahilmgandhi 18:6a4db94011d3 487 * @{
sahilmgandhi 18:6a4db94011d3 488 */
sahilmgandhi 18:6a4db94011d3 489
sahilmgandhi 18:6a4db94011d3 490 /**
sahilmgandhi 18:6a4db94011d3 491 * @brief Returns the RNG state.
sahilmgandhi 18:6a4db94011d3 492 * @param hrng: pointer to a RNG_HandleTypeDef structure that contains
sahilmgandhi 18:6a4db94011d3 493 * the configuration information for RNG.
sahilmgandhi 18:6a4db94011d3 494 * @retval HAL state
sahilmgandhi 18:6a4db94011d3 495 */
sahilmgandhi 18:6a4db94011d3 496 HAL_RNG_StateTypeDef HAL_RNG_GetState(RNG_HandleTypeDef *hrng)
sahilmgandhi 18:6a4db94011d3 497 {
sahilmgandhi 18:6a4db94011d3 498 return hrng->State;
sahilmgandhi 18:6a4db94011d3 499 }
sahilmgandhi 18:6a4db94011d3 500
sahilmgandhi 18:6a4db94011d3 501 /**
sahilmgandhi 18:6a4db94011d3 502 * @}
sahilmgandhi 18:6a4db94011d3 503 */
sahilmgandhi 18:6a4db94011d3 504
sahilmgandhi 18:6a4db94011d3 505 /**
sahilmgandhi 18:6a4db94011d3 506 * @}
sahilmgandhi 18:6a4db94011d3 507 */
sahilmgandhi 18:6a4db94011d3 508
sahilmgandhi 18:6a4db94011d3 509 #endif /* HAL_RNG_MODULE_ENABLED */
sahilmgandhi 18:6a4db94011d3 510 /**
sahilmgandhi 18:6a4db94011d3 511 * @}
sahilmgandhi 18:6a4db94011d3 512 */
sahilmgandhi 18:6a4db94011d3 513
sahilmgandhi 18:6a4db94011d3 514 /**
sahilmgandhi 18:6a4db94011d3 515 * @}
sahilmgandhi 18:6a4db94011d3 516 */
sahilmgandhi 18:6a4db94011d3 517
sahilmgandhi 18:6a4db94011d3 518 /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/