|
||
| Products Download Events Support Videos | ||
Technical Support
On-Line Manuals
µVision3 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
Appendix
System Variables
System variables allow access to specific functions and may be used anywhere a program variable or other expression is used. The following table lists the available system variables, the data types, and their uses.
| Variable | Type | Description |
|---|---|---|
| $ | unsigned long | represents the program counter. You may use $ to display and change the program counter. For example, $ = 0x4000sets the program counter to address 0x4000. |
| _break_ | unsigned int | lets you stop executing the target program. When you set _break_ to a non-zero value, µVision3 halts target program execution. You may use this variable in user and signal functions to halt program execution. |
| _traps_ | unsigned int | when you set _traps_ to a non-zero value, µVision3 display messages for the 166 hardware traps: Undefined Opcode, Protected Instruction Fault, Illegal Word Operand Access, Illegal Instruction Access, Stack Underflow and Stack Overflow. |
| states | unsigned long |
current value of the CPU instruction state counter; starts
counting from 0 when your target program begins execution and
increases for each instruction that is executed.
Note:
|
| seconds | double |
execution time in seconds.
Note:
|
| itrace | unsigned int | indicates whether or not trace recording is performed during target program execution. When itrace is 0, no trace recording is performed. When itrace has a non-zero value, trace information is recorded. Refer to Trace Recording for more information. |
| radix | unsigned int | determines the base used for numeric values displayed. radix may be 10 or 16. The default setting is 16 for HEX output. |
ProductsDevelopment Tools |
Hardware & Collateral |
Downloads |
Support |
Contact |
 |
||||