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nRF52840 DK - Zephyr Project with VS - Blinky Project Failure

Hi All,

I have a nRF52840 DK board. Which I bought about 1.5 years ago. I used to do some development using Segger Embedded Studio those days.

Now I have setup the Zephyr Project in the Visual Studio environment. I started with the Blinky project. I built it and flashed it to the board. 

However, the LED1 did not start blinking. 

I noticed that when I short the bridge SB9, the LED1 starts to blink. 

I am not sure whether there is an issue with my project configuration or some hardware issue.

Hope anyone can help me with this.

Thanks a lot!!

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