RTT Output Broken After Adding Large Static Variable

[WhoIsJohnGalt]

Hi,

when I increase the size of the ThreadX trace buffer above 30k the RTT output is not working anymore (Below 30k RTT works fine).

static uint8_t trace_buffer[1024*64] __attribute__((section(".trace")));

My guess is that the RTT viewer can't find the RTT control block anymore. I can't explain myself why this is the case.
When checking the map file I find the control block near the end of SRAM1, which should not be a problem I think?

Anyone some idea, how to fix the RTT output? Any help is appreciated :)
Thank you

Regards

John

[WhoIsJohnGalt · Accepted solution]

After setting the address of the control block in the RTT viewer the output works again.

[Andrew Neil]

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@WhoIsJohnGalt wrote:

My guess is that the RTT viewer can't find the RTT control block anymore.

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That would be something to take up with Segger:

https://forum.segger.com/index.php/Board/3-J-Link-Flasher-related/?s=c02a6b0d2096ae321cdf9ebd41d79f02de3514dd