My program can run in NUCLEO-WL55JC1 after power on. It fails to start after pressing the reset button. it also fails to start after software loaded using STM32Cube Programmer. Need to power off and power on to start every time. What is the problem ?

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Imen.D

ST Technical Moderator

Hello @W.K. Tam ,

Did you try Connect Under Reset mode?

Make sure BOOT0 is pulled Low.

Imen

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W.K. TamAuthor

Associate II

Thanks Imen,

I have left this problem unsolved to work on other urgent tasks first. How to connect under Reset mode ? BOOT0 is always pulled low but not successfully restart by pressing RESET button. Need to power off and on to restart.

WK Tam

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