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STM32L4 BusFault_Handler

Question asked by Daniel Tarrago on Dec 5, 2017

I'm developing an application based on STM32L4 on a custom board. Program is running fine but I noticed that sometimes (maybe once after four days working) device is reseted. In order to find the reason of this reset, I removed watchdog and waited for the reset to happen again: after some days perfectly working, I have noticed a reset (device stopped and showing status through some LEDs) and status LEDs tell me that the reason is 'BusFault' because device has stopped in the 'BusFault_Handler'. 

Which could be the reason of such error?

Which is the best way to find the reason of such behaviour?

Best regards.