• State Not Answered
  • Locked Locked
  • Replies 3 replies
  • Subscribers 350 subscribers
  • Views 4572 views
  • Users 0 members are here
2025 survey

We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.

Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

Cortex M4, setting HW watchpoints?

Juha Aaltonen

I haven't been able to get a watchpoint to work.

I'm playing with an STM32F4 series device and I'm using Atollic TrueSTUDIO for debugging.

I'd like to use a function for setting up a watchpoint, and I guess the debug events are handled right, because the breakpoints set via the IDE work fine,

but I haven't been able to get a watchpoint to work.

What am I missing?

(I seem to have problems with code-tags. I'll try to put the code tnto the next posting.)

Parents
  • 0

    Some update:

    I checked that in our system thread mode is privileged (by reading the CONTROL register). So accessing the debug registerd should be allowed.

    Then I read the DHCSR and it was zero. DEMCR was also zero even after I tried to set the TRCENA-bit.

    Any idea what keeps the TRCENA-bit low? The running debugger (SWD)?

    To my understanding STM32F427 should have watchpoints implemented.

Reply
  • 0

    Some update:

    I checked that in our system thread mode is privileged (by reading the CONTROL register). So accessing the debug registerd should be allowed.

    Then I read the DHCSR and it was zero. DEMCR was also zero even after I tried to set the TRCENA-bit.

    Any idea what keeps the TRCENA-bit low? The running debugger (SWD)?

    To my understanding STM32F427 should have watchpoints implemented.

Children
No data