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Kumar123
Associate III
Dec 27, 2025 11:31 AM UTC
Question

Zephyr Blinky LED example not blinking

Split from Zephyr RTOS on Nucleo-F411RE ? - which has been answered.

This is a new question.

Hi T_Hamdi

Thank you for your response.

I have installed the Zephyr IDE and used the Blinky LED example. The firmware was flashed successfully; however, the LED is not glowing.

I have attached an image for your reference. Please take a look.

1 reply

T_Hamdi
T_Hamdi
ST Employee
Dec 29, 2025 10:24 AM UTC

Hello @Kumar123,

I see in the image that the .hex file is flashed using the J-Link debugger. Do you have a J-Link connected to the board, or are you using the ST-Link included on the board?

 

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