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µVision User's Guide
µVision3 Overview User Interface Creating Applications Utilities 
Debugging Using the Debugger 
CPU Simulation Start Debugging Application Program Execution Debug Windows and Dialogs Breakpoints Code Coverage CPU Registers Disassembly Window Logic Analyzer Setup Setup in Detail Restrictions Memory Window Memory Map Output Window - Command Debug Commands Variables and Registers Debug Functions Execution Profiler Performance Analyzer Serial Window Symbol Window Toolbox Watch Window Expressions Constants System Variables Peripheral Variables I/O Ports Serial Ports Program Variables (Symbols) Line Numbers Bit Addresses Type Specifications Operators Differences Between µVision3 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 Accesses Command Input from File Preset I/O Ports or Memory Contents Write Debug Output to a File Keyboard Shortcuts Debug Commands Debug Functions Simulation Flash Programming Dialogs Example Programs Command Line AppendixStart Debugging
The µVision3 Debug Mode starts with the menu command Debug — Start/Stop Debug Session. Depending on settings under Options for Target — Debug, the µVision3 Debugger loads the application program and executes the startup code.
µVision3 saves the editor screen layout and restores the screen layout of the last debug session. If the program execution stops, µVision3 opens an editor window with the source text or shows CPU instructions in the disassembly window.
The current instruction or high-level statement (the one about to execute) is marked with a yellow arrow. Each time you step, the arrow moves to reflect the new current line or instruction.
The following screen is what you can expect when you start the debugger.
During debugging, most editor features are still available. For example, you can use the find command or correct program errors. Program source text of your application is shown in the same windows.
The µVision3 debug mode differs from the edit mode in the following aspects:
- The Debug Menu and Debug Commands are available. The additional Debug Windows and Dialogs are discussed in the following.
- The project structure or tool parameters cannot be modified. All build commands are disabled.
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