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STM32F103 LD3 light is always red when USB is connected

TAGUI.1
Associate

I'm trying to build a simple hello world program with STM32F103 board using SWD debugger and ITM feature. But when I plug my USB cable on my PC, I have my LD1 and LD3 always in red light. Is that a problem? If so, how to solve?

5 REPLIES 5
gbm
Lead III

What board?

STM32 NUCLEO-F103RB

STM32F103RBT6

AScha.3
Chief II

same on my board, both red.

can you connect with CubeProgrammer ?

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GMill.2
Associate

I have been facing the same issue. both red!

AScha.3
Chief II

..thats correct !

when connected CubeProgrammer -> STlink -> board, Ld1 blink red/green , disconnected is red only.

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