Management functions. More...

Functions
HAL_StatusTypeDef	HAL_RNG_GenerateRandomNumber (RNG_HandleTypeDef hrng, uint32_t random32bit)
	Generate a 32-bit random number.
HAL_StatusTypeDef	HAL_RNG_GenerateRandomNumber_IT (RNG_HandleTypeDef *hrng)
	Generate a 32-bit random number in interrupt mode.
void	HAL_RNG_IRQHandler (RNG_HandleTypeDef *hrng)
	Handle RNG interrupt request.
uint32_t	HAL_RNG_GetRandomNumber (RNG_HandleTypeDef *hrng)
	Return generated random number in polling mode (Obsolete).
uint32_t	HAL_RNG_GetRandomNumber_IT (RNG_HandleTypeDef *hrng)
	Return a 32-bit random number with interrupt enabled (Obsolete).
uint32_t	HAL_RNG_ReadLastRandomNumber (RNG_HandleTypeDef *hrng)
	Read latest generated random number.
__weak void	HAL_RNG_ReadyDataCallback (RNG_HandleTypeDef *hrng, uint32_t random32bit)
	Data Ready callback in non-blocking mode.
__weak void	HAL_RNG_ErrorCallback (RNG_HandleTypeDef *hrng)
	RNG error callback.

Detailed Description

Management functions.

 ===============================================================================
                      ##### 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

Function Documentation

void HAL_RNG_ErrorCallback ( RNG_HandleTypeDef * hrng )

RNG error callback.

Parameters:

hrng,: pointer to a RNG_HandleTypeDef structure.

Return values:

None

Definition at line 796 of file stm32l4xx_hal_rng.c.

Referenced by HAL_RNG_Init(), HAL_RNG_IRQHandler(), and HAL_RNG_UnRegisterCallback().

HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber	(	RNG_HandleTypeDef *	hrng,
		uint32_t *	random32bit
	)

Generate a 32-bit random number.

Note:: Each time the random number data is read the RNG_FLAG_DRDY flag is automatically cleared.

Parameters:

hrng,:	pointer to a RNG_HandleTypeDef structure.
random32bit,:	pointer to generated random number variable if successful.

Return values:

HAL status

Definition at line 568 of file stm32l4xx_hal_rng.c.

References __HAL_RNG_GET_FLAG, HAL_GetTick(), HAL_RNG_STATE_BUSY, HAL_RNG_STATE_ERROR, HAL_RNG_STATE_READY, __RNG_HandleTypeDef::Instance, __RNG_HandleTypeDef::RandomNumber, RNG_FLAG_DRDY, RNG_TIMEOUT_VALUE, and __RNG_HandleTypeDef::State.

Referenced by HAL_RNG_GetRandomNumber().

HAL_StatusTypeDef HAL_RNG_GenerateRandomNumber_IT ( RNG_HandleTypeDef * hrng )

Generate a 32-bit random number in interrupt mode.

Parameters:

hrng,: pointer to a RNG_HandleTypeDef structure.

Return values:

HAL status

Definition at line 621 of file stm32l4xx_hal_rng.c.

References __HAL_RNG_ENABLE_IT, HAL_RNG_STATE_BUSY, HAL_RNG_STATE_READY, and __RNG_HandleTypeDef::State.

uint32_t HAL_RNG_GetRandomNumber ( RNG_HandleTypeDef * hrng )

Return generated random number in polling mode (Obsolete).

Note:: Use HAL_RNG_GenerateRandomNumber() API instead.

Parameters:

hrng,: pointer to a RNG_HandleTypeDef structure that contains the configuration information for RNG.

Return values:

random value

Definition at line 723 of file stm32l4xx_hal_rng.c.

References HAL_RNG_GenerateRandomNumber(), and __RNG_HandleTypeDef::RandomNumber.

uint32_t HAL_RNG_GetRandomNumber_IT ( RNG_HandleTypeDef * hrng )

Return a 32-bit random number with interrupt enabled (Obsolete).

Note:: Use HAL_RNG_GenerateRandomNumber_IT() API instead.

Parameters:

hrng,: RNG handle

Return values:

32-bit random number

Definition at line 742 of file stm32l4xx_hal_rng.c.

References __HAL_RNG_ENABLE_IT, HAL_RNG_STATE_BUSY, __RNG_HandleTypeDef::Instance, and __RNG_HandleTypeDef::State.

void HAL_RNG_IRQHandler ( RNG_HandleTypeDef * hrng )

Handle 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.; 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.; RNG ErrorCallback() API is called once whether SEIS or CEIS are set.

Parameters:

hrng,: pointer to a RNG_HandleTypeDef structure.

Return values:

None

Definition at line 670 of file stm32l4xx_hal_rng.c.

References __HAL_RNG_CLEAR_IT, __HAL_RNG_DISABLE_IT, __HAL_RNG_GET_IT, __RNG_HandleTypeDef::ErrorCallback, HAL_RNG_ErrorCallback(), HAL_RNG_ReadyDataCallback(), HAL_RNG_STATE_ERROR, HAL_RNG_STATE_READY, __RNG_HandleTypeDef::Instance, __RNG_HandleTypeDef::RandomNumber, __RNG_HandleTypeDef::ReadyDataCallback, RNG_IT_CEI, RNG_IT_DRDY, RNG_IT_SEI, and __RNG_HandleTypeDef::State.