MPU

Functions
__STATIC_INLINE void	LL_MPU_Enable (uint32_t Options)
	Enable MPU with input options MPU_CTRL ENABLE LL_MPU_Enable. More...
__STATIC_INLINE void	LL_MPU_Disable (void)
	Disable MPU MPU_CTRL ENABLE LL_MPU_Disable. More...
__STATIC_INLINE uint32_t	LL_MPU_IsEnabled (void)
	Check if MPU is enabled or not MPU_CTRL ENABLE LL_MPU_IsEnabled. More...
__STATIC_INLINE void	LL_MPU_EnableRegion (uint32_t Region)
	Enable a MPU region MPU_RASR ENABLE LL_MPU_EnableRegion. More...
__STATIC_INLINE void	LL_MPU_ConfigRegion (uint32_t Region, uint32_t SubRegionDisable, uint32_t Address, uint32_t Attributes)
	Configure and enable a region MPU_RNR REGION LL_MPU_ConfigRegion MPU_RBAR REGION LL_MPU_ConfigRegion MPU_RBAR ADDR LL_MPU_ConfigRegion MPU_RASR XN LL_MPU_ConfigRegion MPU_RASR AP LL_MPU_ConfigRegion MPU_RASR S LL_MPU_ConfigRegion MPU_RASR C LL_MPU_ConfigRegion MPU_RASR B LL_MPU_ConfigRegion MPU_RASR SIZE LL_MPU_ConfigRegion. More...
__STATIC_INLINE void	LL_MPU_DisableRegion (uint32_t Region)
	Disable a region MPU_RNR REGION LL_MPU_DisableRegion MPU_RASR ENABLE LL_MPU_DisableRegion. More...

Detailed Description

Function Documentation

LL_MPU_ConfigRegion()

__STATIC_INLINE void LL_MPU_ConfigRegion	(	uint32_t	Region,
		uint32_t	SubRegionDisable,
		uint32_t	Address,
		uint32_t	Attributes
	)

Configure and enable a region MPU_RNR REGION LL_MPU_ConfigRegion
MPU_RBAR REGION LL_MPU_ConfigRegion
MPU_RBAR ADDR LL_MPU_ConfigRegion
MPU_RASR XN LL_MPU_ConfigRegion
MPU_RASR AP LL_MPU_ConfigRegion
MPU_RASR S LL_MPU_ConfigRegion
MPU_RASR C LL_MPU_ConfigRegion
MPU_RASR B LL_MPU_ConfigRegion
MPU_RASR SIZE LL_MPU_ConfigRegion.

Parameters

Region	This parameter can be one of the following values: LL_MPU_REGION_NUMBER0 LL_MPU_REGION_NUMBER1 LL_MPU_REGION_NUMBER2 LL_MPU_REGION_NUMBER3 LL_MPU_REGION_NUMBER4 LL_MPU_REGION_NUMBER5 LL_MPU_REGION_NUMBER6 LL_MPU_REGION_NUMBER7
Address	Value of region base address
SubRegionDisable	Sub-region disable value between Min_Data = 0x00 and Max_Data = 0xFF
Attributes	This parameter can be a combination of the following values: LL_MPU_REGION_SIZE_32B or LL_MPU_REGION_SIZE_64B or LL_MPU_REGION_SIZE_128B or LL_MPU_REGION_SIZE_256B or LL_MPU_REGION_SIZE_512B or LL_MPU_REGION_SIZE_1KB or LL_MPU_REGION_SIZE_2KB or LL_MPU_REGION_SIZE_4KB or LL_MPU_REGION_SIZE_8KB or LL_MPU_REGION_SIZE_16KB or LL_MPU_REGION_SIZE_32KB or LL_MPU_REGION_SIZE_64KB or LL_MPU_REGION_SIZE_128KB or LL_MPU_REGION_SIZE_256KB or LL_MPU_REGION_SIZE_512KB or LL_MPU_REGION_SIZE_1MB or LL_MPU_REGION_SIZE_2MB or LL_MPU_REGION_SIZE_4MB or LL_MPU_REGION_SIZE_8MB or LL_MPU_REGION_SIZE_16MB or LL_MPU_REGION_SIZE_32MB or LL_MPU_REGION_SIZE_64MB or LL_MPU_REGION_SIZE_128MB or LL_MPU_REGION_SIZE_256MB or LL_MPU_REGION_SIZE_512MB or LL_MPU_REGION_SIZE_1GB or LL_MPU_REGION_SIZE_2GB or LL_MPU_REGION_SIZE_4GB LL_MPU_REGION_NO_ACCESS or LL_MPU_REGION_PRIV_RW or LL_MPU_REGION_PRIV_RW_URO or LL_MPU_REGION_FULL_ACCESS or LL_MPU_REGION_PRIV_RO or LL_MPU_REGION_PRIV_RO_URO LL_MPU_TEX_LEVEL0 or LL_MPU_TEX_LEVEL1 or LL_MPU_TEX_LEVEL2 or LL_MPU_TEX_LEVEL4 LL_MPU_INSTRUCTION_ACCESS_ENABLE or LL_MPU_INSTRUCTION_ACCESS_DISABLE LL_MPU_ACCESS_SHAREABLE or LL_MPU_ACCESS_NOT_SHAREABLE LL_MPU_ACCESS_CACHEABLE or LL_MPU_ACCESS_NOT_CACHEABLE LL_MPU_ACCESS_BUFFERABLE or LL_MPU_ACCESS_NOT_BUFFERABLE

Return values

None

Definition at line 583 of file stm32l4xx_ll_cortex.h.

{
  /* Set Region number */
  WRITE_REG(MPU->RNR, Region);
  /* Set base address */
  WRITE_REG(MPU->RBAR, (Address & 0xFFFFFFE0U));
  /* Configure MPU */
  WRITE_REG(MPU->RASR, (MPU_RASR_ENABLE_Msk | Attributes | SubRegionDisable << MPU_RASR_SRD_Pos));
}

LL_MPU_Disable()

__STATIC_INLINE void LL_MPU_Disable

(

void

)

Disable MPU MPU_CTRL ENABLE LL_MPU_Disable.

Return values

None

Definition at line 505 of file stm32l4xx_ll_cortex.h.

{
  /* Make sure outstanding transfers are done */
  __DMB();
  /* Disable MPU*/
  WRITE_REG(MPU->CTRL, 0U);
}

LL_MPU_DisableRegion()

__STATIC_INLINE void LL_MPU_DisableRegion

(

uint32_t

Region

)

Disable a region MPU_RNR REGION LL_MPU_DisableRegion
MPU_RASR ENABLE LL_MPU_DisableRegion.

Parameters

Region

This parameter can be one of the following values: LL_MPU_REGION_NUMBER0 LL_MPU_REGION_NUMBER1 LL_MPU_REGION_NUMBER2 LL_MPU_REGION_NUMBER3 LL_MPU_REGION_NUMBER4 LL_MPU_REGION_NUMBER5 LL_MPU_REGION_NUMBER6 LL_MPU_REGION_NUMBER7

Return values

None

Definition at line 608 of file stm32l4xx_ll_cortex.h.

{
  /* Set Region number */
  WRITE_REG(MPU->RNR, Region);
  /* Disable the MPU region */
  CLEAR_BIT(MPU->RASR, MPU_RASR_ENABLE_Msk);
}

LL_MPU_Enable()

__STATIC_INLINE void LL_MPU_Enable

(

uint32_t

Options

)

Enable MPU with input options MPU_CTRL ENABLE LL_MPU_Enable.

Parameters

Options

This parameter can be one of the following values: LL_MPU_CTRL_HFNMI_PRIVDEF_NONE LL_MPU_CTRL_HARDFAULT_NMI LL_MPU_CTRL_PRIVILEGED_DEFAULT LL_MPU_CTRL_HFNMI_PRIVDEF

Return values

None

Definition at line 490 of file stm32l4xx_ll_cortex.h.

{
  /* Enable the MPU*/
  WRITE_REG(MPU->CTRL, (MPU_CTRL_ENABLE_Msk | Options));
  /* Ensure MPU settings take effects */
  __DSB();
  /* Sequence instruction fetches using update settings */
  __ISB();
}

LL_MPU_EnableRegion()

__STATIC_INLINE void LL_MPU_EnableRegion

(

uint32_t

Region

)

Enable a MPU region MPU_RASR ENABLE LL_MPU_EnableRegion.

Parameters

Region

This parameter can be one of the following values: LL_MPU_REGION_NUMBER0 LL_MPU_REGION_NUMBER1 LL_MPU_REGION_NUMBER2 LL_MPU_REGION_NUMBER3 LL_MPU_REGION_NUMBER4 LL_MPU_REGION_NUMBER5 LL_MPU_REGION_NUMBER6 LL_MPU_REGION_NUMBER7

Return values

None

Definition at line 537 of file stm32l4xx_ll_cortex.h.

{
  /* Set Region number */
  WRITE_REG(MPU->RNR, Region);
  /* Enable the MPU region */
  SET_BIT(MPU->RASR, MPU_RASR_ENABLE_Msk);
}

LL_MPU_IsEnabled()

__STATIC_INLINE uint32_t LL_MPU_IsEnabled

(

void

)

Check if MPU is enabled or not MPU_CTRL ENABLE LL_MPU_IsEnabled.

Return values

State

of bit (1 or 0).

Definition at line 518 of file stm32l4xx_ll_cortex.h.

{
  return (READ_BIT(MPU->CTRL, MPU_CTRL_ENABLE_Msk) == (MPU_CTRL_ENABLE_Msk));
}