Texas Instruments Development Kit for TM4C129x,Tiva™ ARM® Cortex™ -M4 Microcontroller DK-TM4C129X DK-TM4C129X Datenbogen

Produktcode

DK-TM4C129X

■ An internally detected error such as an undefined instruction or an attempt to change state with

instruction.

■ Attempting to execute an instruction from a memory region marked as Non-Executable (XN).

■ An MPU fault because of a privilege violation or an attempt to access an unmanaged region.

2.6.1

Fault Types

Table 2-11 on page 134 shows the types of fault, the handler used for the fault, the corresponding
fault status register, and the register bit that indicates the fault has occurred. See page 194 for more
information about the fault status registers.

Table 2-11. Faults

Bit Name

Fault Status Register

Handler

Fault

VECT

Hard Fault Status (HFAULTSTAT)

Hard fault

Bus error on a vector read

FORCED

Hard Fault Status (HFAULTSTAT)

Hard fault

Fault escalated to a hard fault

IERR

Memory Management Fault Status
(MFAULTSTAT)

Memory management
fault

MPU or default memory mismatch on
instruction access

DERR

Memory Management Fault Status
(MFAULTSTAT)

Memory management
fault

MPU or default memory mismatch on
data access

MSTKE

Memory Management Fault Status
(MFAULTSTAT)

Memory management
fault

MPU or default memory mismatch on
exception stacking

MUSTKE

Memory Management Fault Status
(MFAULTSTAT)

Memory management
fault

MPU or default memory mismatch on
exception unstacking

MLSPERR

Memory Management Fault Status
(MFAULTSTAT)

Memory management
fault

MPU or default memory mismatch
during lazy floating-point state
preservation

BSTKE

Bus Fault Status (BFAULTSTAT)

Bus fault

Bus error during exception stacking

BUSTKE

Bus Fault Status (BFAULTSTAT)

Bus fault

Bus error during exception unstacking

IBUS

Bus Fault Status (BFAULTSTAT)

Bus fault

Bus error during instruction prefetch

BLSPE

Bus Fault Status (BFAULTSTAT)

Bus fault

Bus error during lazy floating-point state
preservation

PRECISE

Bus Fault Status (BFAULTSTAT)

Bus fault

Precise data bus error

IMPRE

Bus Fault Status (BFAULTSTAT)

Bus fault

Imprecise data bus error

NOCP