The Definitive Guide to ARM® Cortex®-M3 and Cortex®-M4 Processors, 3rd Edition

Chapter 12

Fault Exceptions and Fault Handling

Abstract

This chapters explains the fault exception features and lockup scenario in the Cortex^®-M processors, and covers the programmer’s model of processor registers related to fault handling. It also covers techniques for analyzing faults, and how to implement fault handlers in application code for error reporting.

Keywords

Fault; HardFault; Usage Fault; Bus Fault; Memory Management Fault; MemManage; Fault Status Registers (FSR); Fault Address Registers (FAR); fault analysis; escalation

Chapter Outline

12.1 Overview of fault exceptions

12.2 Causes of faults

12.2.1 Memory management (MemManage) faults

12.2.2 Bus faults

12.2.3 Usage faults

12.2.4 HardFaults

12.3 Enabling fault handlers

12.3.1 MemManage ...