/**
* @brief Initialize the RNG peripheral and initialize the associated handle.
* @param hrng: pointer to a RNG_HandleTypeDef structure.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_RNG_Init(RNG_HandleTypeDef *hrng)
{
/* Check the RNG handle allocation */
if(hrng == NULL)
{
return HAL_ERROR;
}
assert_param(IS_RNG_ALL_INSTANCE(hrng->Instance));
__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 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;
}
/* Check the parameters */
assert_param(IS_RNG_ALL_INSTANCE(hrng->Instance));
assert_param(IS_RNG_CED(hrng->Init.ClockErrorDetection));
#if (USE_HAL_RNG_REGISTER_CALLBACKS == 1)
if (hrng->State == HAL_RNG_STATE_RESET)
{
/* Allocate lock resource and initialize it */
hrng->Lock = HAL_UNLOCKED;
hrng->ReadyDataCallback = HAL_RNG_ReadyDataCallback; /* Legacy weak ReadyDataCallback */
hrng->ErrorCallback = HAL_RNG_ErrorCallback; /* Legacy weak ErrorCallback */
if (hrng->MspInitCallback == NULL)
{
hrng->MspInitCallback = HAL_RNG_MspInit; /* Legacy weak MspInit */
}
/* Init the low level hardware */
hrng->MspInitCallback(hrng);
}
#else
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);
}
#endif /* USE_HAL_RNG_REGISTER_CALLBACKS */
/* Change RNG peripheral state */
hrng->State = HAL_RNG_STATE_BUSY;
/* Clock Error Detection Configuration */
MODIFY_REG(hrng->Instance->CR, RNG_CR_CED, hrng->Init.ClockErrorDetection);
/* Enable the RNG Peripheral */
__HAL_RNG_ENABLE(hrng);
/* Initialize the RNG state */
hrng->State = HAL_RNG_STATE_READY;
/* Initialise the error code */
hrng->ErrorCode = HAL_RNG_ERROR_NONE;
/* Return function status */
return HAL_OK;
}
/**
* @brief Initialize RNG registers according to the specified parameters in RNG_InitStruct.
* @param RNGx RNG Instance
* @param RNG_InitStruct: pointer to a LL_RNG_InitTypeDef structure
* that contains the configuration information for the specified RNG peripheral.
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RNG registers are initialized according to RNG_InitStruct content
* - ERROR: not applicable
*/
ErrorStatus LL_RNG_Init(RNG_TypeDef *RNGx, LL_RNG_InitTypeDef *RNG_InitStruct)
{
/* Check the parameters */
assert_param(IS_RNG_ALL_INSTANCE(RNGx));
assert_param(IS_LL_RNG_CED(RNG_InitStruct->ClockErrorDetection));
/* Clock Error Detection configuration */
MODIFY_REG(RNGx->CR, RNG_CR_CED, RNG_InitStruct->ClockErrorDetection);
return (SUCCESS);
}
/**
* @brief De-initialize RNG registers (Registers restored to their default values).
* @param RNGx RNG Instance
* @retval An ErrorStatus enumeration value:
* - SUCCESS: RNG registers are de-initialized
* - ERROR: not applicable
*/
ErrorStatus LL_RNG_DeInit(RNG_TypeDef *RNGx)
{
/* Check the parameters */
assert_param(IS_RNG_ALL_INSTANCE(RNGx));
/* Enable RNG reset state */
LL_AHB1_GRP1_ForceReset(LL_AHB1_GRP1_PERIPH_RNG);
/* Release RNG from reset state */
LL_AHB1_GRP1_ReleaseReset(LL_AHB1_GRP1_PERIPH_RNG);
return (SUCCESS);
}
