Fix USB-based hot-interrupt hang

mcci-catena / Arduino_Core_STM32

STM32 core support for Arduino

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Fix USB-based hot-interrupt hang #191

Closed terrillmoore closed 2 years ago

terrillmoore commented 2 years ago

This request fixes #189/#190, in which a Catena 4612 board might hang when running from a USB charger or probably from battery, if configured to enable USB.