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Technical Support
On-Line Manuals
µVision 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
Logic Analyzer
Setup
Setup in Detail
Restrictions
Memory Map
Memory Window
Performance Analyzer
Registers Window
Serial Window
Symbols Window
System Viewer
System and Thread Viewer
Thread States
Toolbox
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 µVision 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
Prevent Opening Files
Debug Commands
Debug Functions
Simulation
Flash Programming
Dialogs
Example Programs
Command Line
Appendix
Simulate I/O Ports
µVision provides dialogs that show the status of all I/O ports. The I/O Pins are represented with VTREGs. You may use these VTREGs together with signal functions or breakpoints as shown in the following example program.
// in your C user program PortAvalue = PIOA_PDSR; // read Port A input
Breakpoints that you define in the µVision Simulator:
bs write PORT3, 1, "printf (\"Port3 value=%X\\n\", PORT3)" bs read PORT5, 1, "PORT5 = getint (\"Input Port5 value\")"
During program execution, µVision asks for a Port5 input value. If a new output value is written to Port3, a message is printed in the Output Window. Refer to CPU Pin Registers (VTREGs).
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