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On-Line Manuals
µVision4 User's Guide
About µVision User Interface 
Creating Applications Utilities 
Debugging Using the Debugger 
Simulation Start Debugging Application Program Execution 
Debug Windows and Dialogs 
Breakpoints Window Call Stack and Locals Window Code Coverage Command Window Disassembly Window Event Viewer Execution Profiler Instruction Trace Window Logic Analyzer Setup Setup in Detail Restrictions Using the Logic Analyzer Memory Map Memory Window Performance Analyzer Registers Window Serial Window Symbols Window System Viewer Adding System Viewer Windows Toolbox Trace Data Window Trace Navigation Watch Window 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 Memory Type Specifiers Differences Between µVision4 and C Expression Examples 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) Debug Commands Debug Functions Simulation Flash Programming Dialogs Example Programs Command Line AppendixDebugging
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:
- Using the Debugger is an introduction to simulation and program execution.
- Debug Windows and Dialogs describes the debugging features and interfaces.
- Expressions can be used in debug commands.
- Tips and Tricks describe advanced techniques for a better understanding of the debugger capabilities.
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