Module rp2040_pac::ppb::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