Keil Logo

µVISION DEBUGGER: BREAKPOINTS IN MEMORY REGIONS


Information in this article applies to:

  • µVision Version 2.10 or higher

QUESTION

How do I define a breakpoint that stops program execution whenever my program writes to XDATA memory in the area X:0x1000-X:0x1FFF?

ANSWER

There are two good solutions to this kind of breakpoint.

  1. You can specify address ranges for access breakpoints in the Debug - Breakpoints... dialog. You can define a breakpoint that stops when your program writes to the range X:0x1000-X:0x1FFF with the following inputs:
    Expression: X:0x668
    Count: 1
    Command:
    Access: Write, Size=4096 Bytes
    
  2. You may use the MAP command to specify that a memory range is unavailable for access. The µVision simulator tracks access rights for every memory location. You may define the memory area X:0x1000-X:0x1FFF as READ-ONLY using the following command:
    MAP  X:0x1000, X:0x1FFF READ
    

    Whenever your program writes to this memory area, the debugger halts and displays the following message:

    *** error 65: access violation at X:0xYYYY : no 'write' permission
    

MORE INFORMATION

  • Getting Started with µVision2 User's Guide, Chapter 5, Breakpoints

SEE ALSO

Last Reviewed: Saturday, July 9, 2005


Did this article provide the answer you needed?
 
Yes
No
Not Sure
 
  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.