STM32G473 UART DMA free run not active but in trace mode it's work.

[Leimen]

Hello,

I make STM32G473 UART DMA work in debug trace mode (ST-LINK V3).

when I disconnect wire and power off to reset for free run.

it's not work.

I don't understand.

[Leimen]

BTW,

I use STM32CubeIDE

Version: 1.4.2

Build: 7643_20200813_1322 (UTC)

[Leimen]

I found this sub

https://community.st.com/s/question/0D53W00000KmPTZSA3/uart-interrupt-callback-calling-only-when-running-in-debugging-mode-using-stlinkv2-debugger

I will try that.

[Leimen]

OK, it's same problem.

[waclawek.jan]

And adding delay, as in the linked thread, does help?

JW

[Leimen]

In my case, I am not use delay, just don't start immediately.

I use RTOS.