RTT Tracing is not working using NXP mimxrt1064_evk

[hendriklehmkuhl]

Describe the bug
I would like to use RTT tracing with Segger SystemView and it does not work as specified with NXP MIMXRT1064_EVK. My Segger J-Link is not able to find the RTT control block for this board. Using the same setup with another board (Atmel sam_e70b_xplained) does work without any problems.

To Reproduce
Steps to reproduce the behavior:

1. Add CONFIG_SEGGER_SYSTEMVIEW=y and CONFIG_TRACING=y to the prj.conf file of any application (for example for the synchonization sample)
2. Build and flash the application
3. Try to capture RTT data with Segger SystemView or open the Segger web control panel and switch to the tab "RTT"
4. SystemView shows the Error: "Could not find RTT Control Block"
5. The segger web control panel displays that there is no RTT communication at all

Expected behavior
RTT logging should work to analyze the applications behaviour. The same setup works out of the box with Atmel sam_e70b_xplained.

Environment (please complete the following information):

• OS: Windows
• Toolchain: gnu-arm-embedded
• Commit: Release v2.3.0

[hendriklehmkuhl]

@MaureenHelm thank you! I tested it and now SystemView does find the RTT control block but unfortunately it is not showing any received events or tasks. Furthermore the uart-terminal stops transmitting data as soon as I start recording in SystemView so possibly the CPU is halted.

Edit: I just notice that it does work if I power cycle the board after flashing and before I start recording