µVISION: Stopping Program Execution on Variable Write

Information in this article applies to:

• C166 Version 4.03

QUESTION

In the µVision debugger, how can I stop program execution when a particular variable is written to?

ANSWER

The µVision debugger is based on dScope and many of the dScope commands are included in the µVision debugger.

The command you need is BREAKSET (BS). For example:

BREAKSET WRITE foo == 3

stops execution when a 3 is written to the variable foo.

It is also possible to set access breakpoints using the Breakpoints dialog window in µVision debugger. Full details of how to do this may be found in the Getting Started guide.

Last Reviewed: Thursday, January 7, 2021