[ABANDONED] STM32 and SEGGER RTT for printing debugging messages

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  • [ABANDONED] STM32 and SEGGER RTT for printing debugging messages

    Hi, I'm using NUCLEO-F446RE (STM32F4 ARM® Cortex®-M4 MCU 32-Bit Embedded Evaluation Board), Keil MDK 5.20 on 64-bit Windows 10.
    digikey.com/product-detail/en/…46RE/497-15882-ND/5347712

    Instead of using the ST-Link, which is pre-installed on the NUCLEO-F446RE board, I used "Converting ST-LINK On-Board Into a J-Link".
    segger.com/products/debug-prob…j-links/st-link-on-board/

    Also, I use my custom J-Link Plus to connect the board to the PC.

    When printing debugging messages, I used STM32F4's UART pins.
    I wish to use the RTT to print these messages.

    - Is this STM32F446RE MCU able to use the RTT to print debugging messages?
    - If so, how can I do that when using Keil MDK? Hope to see any references (documents, examples, etc), please.

    Thanks for your help.
    -Best Regards, Matthew
  • Hello Matthew,

    Thank you for your inquiry.
    Any Cortex-M can use RTT.
    But Keil MDK does not provide a RTT terminal to display the messages.
    For this you can either use the J-Link RTT Viewer software that comes with the J-Link software package or use our debug software Ozone instead.
    segger.com/products/development-tools/ozone-j-link-debugger/

    If you are looking for an IDE that supports RTT out of the box Embedded Studio can be used as well.

    Best regards,
    Nino
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  • Hi, Nino.
    Just like this screenshot, do you mean I can call

    C Source Code

    1. SEGGER_RTT_TerminalOut
    when using the STM32 series and see the log message using Ozone, regardless of what IDE (Keil, SEGGER ES, IAR EWARM) I use?
    Also, in order to use the RTT, do I have to set the heap size of the STM32 microcontroller?
    -Best Regards, Matthew