[SOLVED] RTT - What's the purpose of the 3 Up buffers?

gabriel-fz · February 20, 2023 at 5:56 PM

Hi,

I'm trying to better understand the RTT architecture and I can't find the information on the wiki.
It seems RTT is configured to have 3 aUp buffers and 3 aDown buffers. What is the purpose of those 3 buffers?

I would like my CLI application on terminal 0 (in and out), and my logging to terminal 1 (out).
What settings configuration would you recommend to achieve those requirements?

Thanks

Regards,
Gabriel

SEGGER - Alex · February 21, 2023 at 8:29 PM

Hi,

https://wiki.segger.com/RTT
https://wiki.segger.com/J-Link_RTT_Viewer#The_Terminal_Tabs

1 buffer on target side per “channel”.
n terminals may share 1 buffer.
Terminals are a memory saving way of having multiple tasks doing output that should be visually distinuishable.
Pro: Only requires 1 buffer on the target side
Con: Requires locking to make sure tasks do not access buffer concurrently

[SOLVED] RTT - What's the purpose of the 3 Up buffers?

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