Module mpu_ctrl

Use the MPU Control Register to enable and disable the MPU, and to control whether the default memory map is enabled as a background region for privileged accesses, and whether the MPU is enabled for HardFaults and NMIs.

Structs

MPU_CTRL_SPEC

Use the MPU Control Register to enable and disable the MPU, and to control whether the default memory map is enabled as a background region for privileged accesses, and whether the MPU is enabled for HardFaults and NMIs.

Type Aliases

ENABLE_R

Field ENABLE reader - Enables the MPU. If the MPU is disabled, privileged and unprivileged accesses use the default memory map.
0 = MPU disabled.
1 = MPU enabled.

ENABLE_W

Field ENABLE writer - Enables the MPU. If the MPU is disabled, privileged and unprivileged accesses use the default memory map.
0 = MPU disabled.
1 = MPU enabled.

HFNMIENA_R

Field HFNMIENA reader - Controls the use of the MPU for HardFaults and NMIs. Setting this bit when ENABLE is clear results in UNPREDICTABLE behaviour.
When the MPU is enabled:
0 = MPU is disabled during HardFault and NMI handlers, regardless of the value of the ENABLE bit.
1 = the MPU is enabled during HardFault and NMI handlers.

HFNMIENA_W

Field HFNMIENA writer - Controls the use of the MPU for HardFaults and NMIs. Setting this bit when ENABLE is clear results in UNPREDICTABLE behaviour.
When the MPU is enabled:
0 = MPU is disabled during HardFault and NMI handlers, regardless of the value of the ENABLE bit.
1 = the MPU is enabled during HardFault and NMI handlers.

PRIVDEFENA_R

Field PRIVDEFENA reader - Controls whether the default memory map is enabled as a background region for privileged accesses. This bit is ignored when ENABLE is clear.
0 = If the MPU is enabled, disables use of the default memory map. Any memory access to a location not
covered by any enabled region causes a fault.
1 = If the MPU is enabled, enables use of the default memory map as a background region for privileged software accesses.
When enabled, the background region acts as if it is region number -1. Any region that is defined and enabled has priority over this default map.

PRIVDEFENA_W

Field PRIVDEFENA writer - Controls whether the default memory map is enabled as a background region for privileged accesses. This bit is ignored when ENABLE is clear.
0 = If the MPU is enabled, disables use of the default memory map. Any memory access to a location not
covered by any enabled region causes a fault.
1 = If the MPU is enabled, enables use of the default memory map as a background region for privileged software accesses.
When enabled, the background region acts as if it is region number -1. Any region that is defined and enabled has priority over this default map.

R

Register MPU_CTRL reader

W

Register MPU_CTRL writer