RNG: Random Number generator

Overview

The MCUXpresso SDK provides a peripheral driver for the Random Number generator module of MCUXpresso SDK devices.

Files
file	fsl_rng.h

Enumerations
enum	trng_mode_t {   trng_UpdateOnce = 0x1,   trng_FreeRunning = 0x2 }

Functions
status_t	TRNG_GetDefaultConfig (trng_config_t *userConfig)
	Gets Default config of TRNG. More...
status_t	TRNG_Init (RNG_Type *base, const trng_config_t *userConfig)
	Initializes the TRNG. More...
void	TRNG_Deinit (RNG_Type *base)
	Shuts down the TRNG. More...
status_t	TRNG_GetRandomData (RNG_Type *base, void *data, size_t data_size)
	Gets random data. More...

Enumeration Type Documentation

enum trng_mode_t

RNG return status types RNG operating modes

Enumerator
trng_UpdateOnce	TRNG update once & disable.
trng_FreeRunning	TRNG updates continuously.

Function Documentation

status_t TRNG_GetDefaultConfig

(

trng_config_t *

userConfig

)

This function initializes the TRNG configuration structure.

Parameters

userConfig

Pointer to TRNG configuration structure

status_t TRNG_Init	(	RNG_Type *	base,
		const trng_config_t *	userConfig
	)

This function initializes the TRNG.

Parameters

base	TRNG base address
userConfig	The configuration of TRNG

Returns

kStatus_Success - Success kStatus_InvalidArgument - Invalid parameter

void TRNG_Deinit

(

RNG_Type *

base

)

This function shuts down the TRNG.

Parameters

base	TRNG base address

status_t TRNG_GetRandomData	(	RNG_Type *	base,
		void *	data,
		size_t	data_size
	)

This function gets random data from the TRNG.

Parameters

base	TRNG base address
data	pointer to user buffer to be filled by random data
data_size	size of data in bytes

Returns

TRNG status