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µVision User's Guide

About µVision User Interface Creating Applications Debugging Start Debugging Start Energy Measurement without Debug Application Program Execution Debug Windows and Dialogs Breakpoints Window Call Stack and Locals Window Code Coverage Command Window Component Viewer Disassembly Window Event Recorder Setup Event Recorder Event Recorder Window Events Filtering Event Statistics Window Event Viewer Execution Profiler Instruction Trace Window System Analyzer Usage tips Restrictions Logic Analyzer Setup Setup in Detail Restrictions Cortex-M Trace Configuration Memory Map Memory Window Performance Analyzer Registers Window Serial Window Debug (printf) Viewer Symbols Window System Viewer Adding System Viewer Windows System and Thread Viewer Thread States Toolbox Trace Data Window Trace Navigation Trace Exceptions Event Counters ULINKplus Window Watch Window Core Peripherals Cortex-M0 and Cortex-M0+ Nested Vector Interrupt Controller System Control and Configuration System Tick Timer Fault Reports (Cortex-M0+ only) Cortex-M3, Cortex-M4, and Cortex-M7 Nested Vector Interrupt Controller System Control and Configuration System Tick Timer Fault Reports Memory Protection Unit Cortex-M23 and Cortex-M33 Nested Vector Interrupt Controller System Control and Configuration System Tick Timer Fault Reports Memory Protection Unit Security Attribution Unit Debug Scripting Expressions Constants System Variables Peripheral Variables I/O Ports Serial Ports Program Variables (Symbols) Fully Qualified Symbols Non-Qualified Symbols Literal Symbols Using Symbols Line Numbers Bit Addresses Type Specifications Operators Differences between µVision and C Expression Examples Code and Data Trace (Cortex-M) Trace Features Configuring Trace Tracepoint Expressions Tracepoint Intrinsics Tracepoint Limitations Tracepoint Marks Tips and Tricks Review Peripherals and CPU Configuration Simulate I/O Ports Simulate Interrupts and Clock Inputs Simulate external I/O Devices Assign Serial I/O to a PC COM Port Check Illegal Memory Access Command Input from File Preset I/O Ports or Memory Contents Write Debug Output to a File Keyboard Shortcuts TPIU Initialization after RESET (Cortex-M) Prevent Opening Files Show Japanese Messages Debug Commands Debug Functions Simulation Flash Programming Dialogs Utilities Command Line Example Programs Appendix

Debugging

This chapter describes the µVision Debugger, the user interface for testing applications. Whether simulating or controlling the target device using a debug adapter, the debugging interface can be used in the same way. While debugging, developers have full access to the source code and can control as well as analyze program execution on C/C++ or assembly level.

Two debugging modes can be selected and configured in the dialog Options for Target — Debug:

  • Use Simulator, configures the µVision Debugger as a software-only product that simulates the instruction set of an Arm Cortex-M based microcontroller. Developers can test and debug embedded applications before the hardware is ready. Refer to Simulation for restrictions and a list of supported Arm Cortex-M cores.
  • Use Target Debugger connects µVision to a debug adapter, which interfaces to the target hardware. The following debug adapters are supported:
    • JTAG/SW Adapter: which connects to on-chip debugging technology like Arm CoreSight. Refer to your debug adapter user's manual for more information:
      ULINKpro
      ULINKplus
      ULINK2/ME
      CMSIS-DAP
      J-Link/J-Trace
      TI XDS
    • Models/Fixed Virtual Platforms: which are accurate, flexible programmer's view models of Arm IP, allowing you to develop software prior to silicon availability (MDK-Professional license required). Refer to the Fast Models user's guide for more information.
    • Other third-party debug adapters that use the Advanced GDI interface.

Use the Settings buttons to configure the simulation or the debug driver (refer to the user's guide of your debug adapter). Other options in this window are explained in Debug.

This chapter includes the sections:

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