CCS/AM3359: CCS Expression continuous refresh issue

Abby3626

Intellectual 475 points

Part Number: AM3359

Tool/software: Code Composer Studio

Hi,

We use CCS6.1.2 and AM3359 to develop our product.

We need to monitor some global variables real-time.

When we enable "continuous refresh" on "Expression" then run the program, it shows error as below:

We try to use "Memory Browser" with "continuous refresh", it shows "????" as below:

How to use "continuous refresh" on "Expression" and "Memory Browser"?

PS: Emulator is XDS100v2.

Thank you.

Abby

over 8 years ago

0 Ki over 8 years ago

TI__Guru**** 472291 points

Hi Abby,
Please see the below thread:
e2e.ti.com/.../548121

especially note Rafael's post which has a link to a video clip that demonstrates how to do real-time memory access using the DAP

Thanks
ki

0 Abby3626 over 8 years ago in reply to Ki

Intellectual 475 points

Hi,
Thanks for your reply, but we have watched this video before.
I get the "00000000", too.
I am still looking for the method to solve this issue.
Abby

0 Chester Gillon over 8 years ago in reply to Abby3626

Guru 92251 points

Abby3626 said:
I get the "00000000", too.
I am still looking for the method to solve this issue.

Are the global variables which the DAP view shows as zeros in cacheable memory?

If so, the global variables may only be updated in the processor cache and not written back to memory, leading the DAP view to display "stale" data. This is because the DAP doesn't support hardware cache-coherency.

See https://e2e.ti.com/support/development_tools/code_composer_studio/f/81/p/569874/2091891#2091891 for more information and possible workarounds.

Also, are you using SYS/BIOS, StarterWare or a bare-metal application?

0 Abby3626 over 8 years ago in reply to Chester Gillon

Intellectual 475 points

Hi Chester,

Thanks for your reply.

I use your suggestion to add "Cache_wb", it's work!

Thank you very much!

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CCS/AM3359: CCS Expression continuous refresh issue