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IF using USB memory in STM32F401VCT6, why halt system?

hsg.1440
Associate II

Hello?

I am using a 3-phase 380V induction motor drive application, and the MCU is STM32F401VCT6. I am using it at 56MHz.

The USB memory storage function is being used, but as soon as it operates, the system all stops operation. Because watchdog (IWDG) is in use, it keeps resetting.

I would like to know the cause of system HALT when using USB memory. Or I would like to know if there is a way to get the USB reset before HALT.

Thanks for reading.

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