CMSIS-Core (Cortex-M)  Version 5.1.1
CMSIS-Core support for Cortex-M processor-based devices
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Define values for MPU region setup. More...

Macros

#define ARM_MPU_REGION_SIZE_xxx
 Size values of a MPU region (in RASR field) More...
 
#define ARM_MPU_AP_xxx
 Values for MPU region access permissions (in RASR field) More...
 

Description

The following define values are used with ARM_MPU_RASR to setup the RASR value field in the MPU region.

See Also
ARM_MPU_Region_t, ARM_MPU_SetRegion, ARM_MPU_SetRegionEx.

Macro Definition Documentation

#define ARM_MPU_AP_xxx

The following define values are used to compose the access permission for an MPU region:

#define Value Access permissions
ARM_MPU_AP_NONE 0x0U None: any access generates a permission fault.
ARM_MPU_AP_PRIV 0x1U Privileged Read/Write: privileged access only; any unprivileged access generates a permission fault.
ARM_MPU_AP_URO 0x2U Privileged Read/Write; Unprivileged Read-only: any unprivileged write generates a permission fault.
ARM_MPU_AP_FULL 0x3U Privileged Read/Write. Unprivileged Read/Write: full access, permission faults are never generated.
ARM_MPU_AP_PRO 0x5U Privileged Read-only: any unprivileged access or privileged write generates a permission fault.
ARM_MPU_AP_RO 0x6U Privileged and Unprivileged Read-only: any write generates a permission fault.
#define ARM_MPU_REGION_SIZE_xxx

The following define values are used to compose the size information for an MPU region:

#define Value Description
ARM_MPU_REGION_SIZE_32B 0x04U Region size 32 Bytes
ARM_MPU_REGION_SIZE_64B 0x05U Region size 64 Bytes
ARM_MPU_REGION_SIZE_128B 0x06U Region size 128 Bytes
ARM_MPU_REGION_SIZE_256B 0x07U Region size 256 Bytes
ARM_MPU_REGION_SIZE_512B 0x08U Region size 512 Bytes
ARM_MPU_REGION_SIZE_1KB 0x09U Region size 1 KByte
ARM_MPU_REGION_SIZE_2KB 0x0AU Region size 2 KBytes
ARM_MPU_REGION_SIZE_4KB 0x0BU Region size 4 KBytes
ARM_MPU_REGION_SIZE_8KB 0x0CU Region size 8 KBytes
ARM_MPU_REGION_SIZE_16KB 0x0DU Region size 16 KBytes
ARM_MPU_REGION_SIZE_32KB 0x0EU Region size 32 KBytes
ARM_MPU_REGION_SIZE_64KB 0x0FU Region size 64 KBytes
ARM_MPU_REGION_SIZE_128KB 0x10U Region size 128 KBytes
ARM_MPU_REGION_SIZE_256KB 0x11U Region size 256 KBytes
ARM_MPU_REGION_SIZE_512KB 0x12U Region size 512 KBytes
ARM_MPU_REGION_SIZE_1MB 0x13U Region size 1 MByte
ARM_MPU_REGION_SIZE_2MB 0x14U Region size 2 MBytes
ARM_MPU_REGION_SIZE_4MB 0x15U Region size 4 MBytes
ARM_MPU_REGION_SIZE_8MB 0x16U Region size 8 MBytes
ARM_MPU_REGION_SIZE_16MB 0x17U Region size 16 MBytes
ARM_MPU_REGION_SIZE_32MB 0x18U Region size 32 MBytes
ARM_MPU_REGION_SIZE_64MB 0x19U Region size 64 MBytes
ARM_MPU_REGION_SIZE_128MB 0x1AU Region size 128 MBytes
ARM_MPU_REGION_SIZE_256MB 0x1BU Region size 256 MBytes
ARM_MPU_REGION_SIZE_512MB 0x1CU Region size 512 MBytes
ARM_MPU_REGION_SIZE_1GB 0x1DU Region size 1 GByte
ARM_MPU_REGION_SIZE_2GB 0x1EU Region size 2 GBytes
ARM_MPU_REGION_SIZE_4GB 0x1FU Region size 4 GBytes