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TAGUI.1
TAGUI.1
Associate
April 7, 2023
Question

STM32F103 LD3 light is always red when USB is connected

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?

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5 replies

gbm
gbm
Super User
April 7, 2023

What board?

My STM32 stuff on github - compact USB device stack and more: https://github.com/gbm-ii/gbmUSBdevice
TAGUI.1
TAGUI.1Author
Associate
April 8, 2023

STM32 NUCLEO-F103RB

STM32F103RBT6

AScha.3
AScha.3
Super User
April 8, 2023

same on my board, both red.

can you connect with CubeProgrammer ?

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GMill.2
GMill.2
Visitor II
April 8, 2023

I have been facing the same issue. both red!

AScha.3
AScha.3
Super User
April 8, 2023

..thats correct !

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

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