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Diffstat (limited to 'c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rng.c')
| -rw-r--r-- | c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rng.c | 510 |
1 files changed, 0 insertions, 510 deletions
diff --git a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rng.c b/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rng.c deleted file mode 100644 index e4b3d20380..0000000000 --- a/c/src/lib/libbsp/arm/stm32f7x/hal/STM32F7xx_HAL_Driver/Src/stm32f7xx_hal_rng.c +++ /dev/null @@ -1,510 +0,0 @@ -/** - ****************************************************************************** - * @file stm32f7xx_hal_rng.c - * @author MCD Application Team - * @version V1.0.1 - * @date 25-June-2015 - * @brief RNG HAL module driver. - * This file provides firmware functions to manage the following - * functionalities of the Random Number Generator (RNG) peripheral: - * + Initialization/de-initialization functions - * + Peripheral Control functions - * + Peripheral State functions - * - @verbatim - ============================================================================== - ##### How to use this driver ##### - ============================================================================== - [..] - The RNG HAL driver can be used as follows: - - (#) Enable the RNG controller clock using __HAL_RCC_RNG_CLK_ENABLE() macro - in HAL_RNG_MspInit(). - (#) Activate the RNG peripheral using HAL_RNG_Init() function. - (#) Wait until the 32 bit Random Number Generator contains a valid - random data using (polling/interrupt) mode. - (#) Get the 32 bit random number using HAL_RNG_GenerateRandomNumber() function. - - @endverbatim - ****************************************************************************** - * @attention - * - * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2> - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * 1. Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * 3. Neither the name of STMicroelectronics nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" - * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR - * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER - * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - * - ****************************************************************************** - */ - -/* Includes ------------------------------------------------------------------*/ -#include "stm32f7xx_hal.h" - -/** @addtogroup STM32F7xx_HAL_Driver - * @{ - */ - -/** @addtogroup RNG - * @{ - */ - -#ifdef HAL_RNG_MODULE_ENABLED - -/* Private types -------------------------------------------------------------*/ -/* Private defines -----------------------------------------------------------*/ -/* Private variables ---------------------------------------------------------*/ -/* Private constants ---------------------------------------------------------*/ -/** @addtogroup RNG_Private_Constants - * @{ - */ -#define RNG_TIMEOUT_VALUE 2 -/** - * @} - */ -/* Private macros ------------------------------------------------------------*/ -/* Private functions prototypes ----------------------------------------------*/ -/* Private functions ---------------------------------------------------------*/ -/* Exported functions --------------------------------------------------------*/ - -/** @addtogroup RNG_Exported_Functions - * @{ - */ - -/** @addtogroup RNG_Exported_Functions_Group1 - * @brief Initialization and de-initialization functions - * -@verbatim - =============================================================================== - ##### Initialization and de-initialization functions ##### - =============================================================================== - [..] This section provides functions allowing to: - (+) Initialize the RNG according to the specified parameters - in the RNG_InitTypeDef and create the associated handle - (+) DeInitialize the RNG peripheral - (+) Initialize the RNG MSP - (+) DeInitialize RNG MSP - -@endverbatim - * @{ - */ - -/** - * @brief Initializes the RNG peripheral and creates the associated handle. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng) -{ - /* Check the RNG handle allocation */ - if(hrng == NULL) - { - return HAL_ERROR; - } - - __HAL_LOCK(hrng); - - if(hrng->State == HAL_RNG_STATE_RESET) - { - /* Allocate lock resource and initialize it */ - hrng->Lock = HAL_UNLOCKED; - - /* Init the low level hardware */ - HAL_RNG_MspInit(hrng); - } - - /* Change RNG peripheral state */ - hrng->State = HAL_RNG_STATE_BUSY; - - /* Enable the RNG Peripheral */ - __HAL_RNG_ENABLE(hrng); - - /* Initialize the RNG state */ - hrng->State = HAL_RNG_STATE_READY; - - __HAL_UNLOCK(hrng); - - /* Return function status */ - return HAL_OK; -} - -/** - * @brief DeInitializes the RNG peripheral. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_RNG_DeInit(RNG_HandleTypeDef *hrng) -{ - /* Check the RNG handle allocation */ - if(hrng == NULL) - { - return HAL_ERROR; - } - /* Disable the RNG Peripheral */ - CLEAR_BIT(hrng->Instance->CR, RNG_CR_IE | RNG_CR_RNGEN); - - /* Clear RNG interrupt status flags */ - CLEAR_BIT(hrng->Instance->SR, RNG_SR_CEIS | RNG_SR_SEIS); - - /* DeInit the low level hardware */ - HAL_RNG_MspDeInit(hrng); - - /* Update the RNG state */ - hrng->State = HAL_RNG_STATE_RESET; - - /* Release Lock */ - __HAL_UNLOCK(hrng); - - /* Return the function status */ - return HAL_OK; -} - -/** - * @brief Initializes the RNG MSP. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval None - */ -__weak void HAL_RNG_MspInit(RNG_HandleTypeDef *hrng) -{ - /* NOTE : This function should not be modified. When the callback is needed, - function HAL_RNG_MspInit must be implemented in the user file. - */ -} - -/** - * @brief DeInitializes the RNG MSP. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval None - */ -__weak void HAL_RNG_MspDeInit(RNG_HandleTypeDef *hrng) -{ - /* NOTE : This function should not be modified. When the callback is needed, - function HAL_RNG_MspDeInit must be implemented in the user file. - */ -} - -/** - * @} - */ - -/** @addtogroup RNG_Exported_Functions_Group2 - * @brief Peripheral Control functions - * -@verbatim - =============================================================================== - ##### Peripheral Control functions ##### - =============================================================================== - [..] This section provides functions allowing to: - (+) Get the 32 bit Random number - (+) Get the 32 bit Random number with interrupt enabled - (+) Handle RNG interrupt request - -@endverbatim - * @{ - */ - -/** - * @brief Generates a 32-bit random number. - * @note Each time the random number data is read the RNG_FLAG_DRDY flag - * is automatically cleared. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @param random32bit: pointer to generated random number variable if successful. - * @retval HAL status - */ - -HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber(RNG_HandleTypeDef *hrng, uint32_t *random32bit) -{ - uint32_t tickstart = 0; - HAL_StatusTypeDef status = HAL_OK; - - /* Process Locked */ - __HAL_LOCK(hrng); - - /* Check RNG peripheral state */ - if(hrng->State == HAL_RNG_STATE_READY) - { - /* Change RNG peripheral state */ - hrng->State = HAL_RNG_STATE_BUSY; - - /* Get tick */ - tickstart = HAL_GetTick(); - - /* Check if data register contains valid random data */ - while(__HAL_RNG_GET_FLAG(hrng, RNG_FLAG_DRDY) == RESET) - { - if((HAL_GetTick() - tickstart ) > RNG_TIMEOUT_VALUE) - { - hrng->State = HAL_RNG_STATE_ERROR; - - /* Process Unlocked */ - __HAL_UNLOCK(hrng); - - return HAL_TIMEOUT; - } - } - - /* Get a 32bit Random number */ - hrng->RandomNumber = hrng->Instance->DR; - *random32bit = hrng->RandomNumber; - - hrng->State = HAL_RNG_STATE_READY; - } - else - { - status = HAL_ERROR; - } - - /* Process Unlocked */ - __HAL_UNLOCK(hrng); - - return status; -} - -/** - * @brief Generates a 32-bit random number in interrupt mode. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval HAL status - */ -HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber_IT(RNG_HandleTypeDef *hrng) -{ - HAL_StatusTypeDef status = HAL_OK; - - /* Process Locked */ - __HAL_LOCK(hrng); - - /* Check RNG peripheral state */ - if(hrng->State == HAL_RNG_STATE_READY) - { - /* Change RNG peripheral state */ - hrng->State = HAL_RNG_STATE_BUSY; - - /* Process Unlocked */ - __HAL_UNLOCK(hrng); - - /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */ - __HAL_RNG_ENABLE_IT(hrng); - } - else - { - /* Process Unlocked */ - __HAL_UNLOCK(hrng); - - status = HAL_ERROR; - } - - return status; -} - -/** - * @brief Handles RNG interrupt request. - * @note In the case of a clock error, the RNG is no more able to generate - * random numbers because the PLL48CLK clock is not correct. User has - * to check that the clock controller is correctly configured to provide - * the RNG clock and clear the CEIS bit using __HAL_RNG_CLEAR_IT(). - * The clock error has no impact on the previously generated - * random numbers, and the RNG_DR register contents can be used. - * @note In the case of a seed error, the generation of random numbers is - * interrupted as long as the SECS bit is '1'. If a number is - * available in the RNG_DR register, it must not be used because it may - * not have enough entropy. In this case, it is recommended to clear the - * SEIS bit using __HAL_RNG_CLEAR_IT(), then disable and enable - * the RNG peripheral to reinitialize and restart the RNG. - * @note User-written HAL_RNG_ErrorCallback() API is called once whether SEIS - * or CEIS are set. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval None - - */ -void HAL_RNG_IRQHandler(RNG_HandleTypeDef *hrng) -{ - /* RNG clock error interrupt occurred */ - if((__HAL_RNG_GET_IT(hrng, RNG_IT_CEI) != RESET) || (__HAL_RNG_GET_IT(hrng, RNG_IT_SEI) != RESET)) - { - /* Change RNG peripheral state */ - hrng->State = HAL_RNG_STATE_ERROR; - - HAL_RNG_ErrorCallback(hrng); - - /* Clear the clock error flag */ - __HAL_RNG_CLEAR_IT(hrng, RNG_IT_CEI|RNG_IT_SEI); - - } - - /* Check RNG data ready interrupt occurred */ - if(__HAL_RNG_GET_IT(hrng, RNG_IT_DRDY) != RESET) - { - /* Generate random number once, so disable the IT */ - __HAL_RNG_DISABLE_IT(hrng); - - /* Get the 32bit Random number (DRDY flag automatically cleared) */ - hrng->RandomNumber = hrng->Instance->DR; - - if(hrng->State != HAL_RNG_STATE_ERROR) - { - /* Change RNG peripheral state */ - hrng->State = HAL_RNG_STATE_READY; - - /* Data Ready callback */ - HAL_RNG_ReadyDataCallback(hrng, hrng->RandomNumber); - } - } -} - -/** - * @brief Returns generated random number in polling mode (Obsolete) - * Use HAL_RNG_GenerateRandomNumber() API instead. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval Random value - */ -uint32_t HAL_RNG_GetRandomNumber(RNG_HandleTypeDef *hrng) -{ - if(HAL_RNG_GenerateRandomNumber(hrng, &(hrng->RandomNumber)) == HAL_OK) - { - return hrng->RandomNumber; - } - else - { - return 0; - } -} - -/** - * @brief Returns a 32-bit random number with interrupt enabled (Obsolete), - * Use HAL_RNG_GenerateRandomNumber_IT() API instead. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval 32-bit random number - */ -uint32_t HAL_RNG_GetRandomNumber_IT(RNG_HandleTypeDef *hrng) -{ - uint32_t random32bit = 0; - - /* Process locked */ - __HAL_LOCK(hrng); - - /* Change RNG peripheral state */ - hrng->State = HAL_RNG_STATE_BUSY; - - /* Get a 32bit Random number */ - random32bit = hrng->Instance->DR; - - /* Enable the RNG Interrupts: Data Ready, Clock error, Seed error */ - __HAL_RNG_ENABLE_IT(hrng); - - /* Return the 32 bit random number */ - return random32bit; -} - -/** - * @brief Read latest generated random number. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval random value - */ -uint32_t HAL_RNG_ReadLastRandomNumber(RNG_HandleTypeDef *hrng) -{ - return(hrng->RandomNumber); -} - -/** - * @brief Data Ready callback in non-blocking mode. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @param random32bit: generated random number. - * @retval None - */ -__weak void HAL_RNG_ReadyDataCallback(RNG_HandleTypeDef *hrng, uint32_t random32bit) -{ - /* NOTE : This function should not be modified. When the callback is needed, - function HAL_RNG_ReadyDataCallback must be implemented in the user file. - */ -} - -/** - * @brief RNG error callbacks. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval None - */ -__weak void HAL_RNG_ErrorCallback(RNG_HandleTypeDef *hrng) -{ - /* NOTE : This function should not be modified. When the callback is needed, - function HAL_RNG_ErrorCallback must be implemented in the user file. - */ -} -/** - * @} - */ - - -/** @addtogroup RNG_Exported_Functions_Group3 - * @brief Peripheral State functions - * -@verbatim - =============================================================================== - ##### Peripheral State functions ##### - =============================================================================== - [..] - This subsection permits to get in run-time the status of the peripheral - and the data flow. - -@endverbatim - * @{ - */ - -/** - * @brief Returns the RNG state. - * @param hrng: pointer to a RNG_HandleTypeDef structure that contains - * the configuration information for RNG. - * @retval HAL state - */ -HAL_RNG_StateTypeDef HAL_RNG_GetState(RNG_HandleTypeDef *hrng) -{ - return hrng->State; -} - -/** - * @} - */ - -/** - * @} - */ - -#endif /* HAL_RNG_MODULE_ENABLED */ - -/** - * @} - */ - -/** - * @} - */ - -/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |