Keil Logo

Technical Support

On-Line Manuals

µVision User's Guide

About µVision User Interface Creating Applications Debugging Using the Debugger Simulation 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 Restrictions Logic Analyzer Setup Setup in Detail Restrictions Cortex-M Trace Configuration Memory Map Memory Window Performance Analyzer Registers Window Serial Window 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 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 Tracepoint Expressions Tracepoint Intrinsics Tracepoint Limitations Configuring the Trace Hardware 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 Code Coverage Export MTB Trace Import for Code Coverage Debug Commands Debug Functions Simulation Flash Programming Dialogs Utilities Command Line Example Programs Appendix


This chapter describes the debug modes of µVision and the user interface for testing applications.

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

  • Use Simulator, configures the µVision Debugger as software-only product that simulates most features of a microcontroller. Developers can test and debug embedded applications before the hardware is ready. µVision simulates a wide variety of peripherals, including serial ports, external I/Os, and timers. Peripheral simulation capabilities vary depending on the device selected.
  • Use Target Debugger, like the ULINK ARM Debugger, links µVision to a debugger adapter, which interfaces the target system. The following debug devices are supported:
    • JTAG/SW/OCDS Adapter: which connects to on-chip debugging systems like the ARM Embedded ICE.
    • Monitor: which can be integrated with user hardware or is available on many evaluation boards.
    • Emulator: which connects to the MCU pins of the target hardware.
    • In-System Debugger: which is part of the user application program and provides basic test functions.

Third-party tool developers can use the Keil Advanced GDI to interface µVision to their own hardware debuggers.

This chapter includes the sections:

  Arm logo
Important information

This site uses cookies to store information on your computer. By continuing to use our site, you consent to our cookies.

Change Settings

Privacy Policy Update

Arm’s Privacy Policy has been updated. By continuing to use our site, you consent to Arm’s Privacy Policy. Please review our Privacy Policy to learn more about our collection, use and transfers
of your data.