HFNMIENA=value1, ENABLE=value1, PRIVDEFENA=value1
MPU Control Register
| ENABLE | Enable MPU 0 (value1): MPU disabled 1 (value2): MPU enabled. |
| HFNMIENA | Enable the operation of MPU during hard fault, NMI, and FAULTMASK handlers 0 (value1): MPU is disabled during hard fault, NMI, and FAULTMASK handlers, regardless of the value of the ENABLE bit 1 (value2): the MPU is enabled during hard fault, NMI, and FAULTMASK handlers. |
| PRIVDEFENA | Enables privileged software access to the default memory map 0 (value1): 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 (value2): If the MPU is enabled, enables use of the default memory map as a background region for privileged software accesses. |