IAR + STLINK-V3PWR, how to disable SWO ?

SergYash · ‎2025-05-26

I am using IAR + STLINK-V3PWR for my project. If I stop and resume program execution, on the STM32L433 MCU the TRACE_IOEN bit is activated and SWO intercepts pin PB3 . How to disable SWO ?

ELABI.1 · ‎2025-05-29

Hi @SergYash,

Similar question is asked here, you can see it, maybe you can help you.

For more information about SWO on STM32L4, you can take a look at this Reference Manual RM0394 specifically section "47 Debug support (DBG)"

Thank you.

ELABI.1

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