I'm trying to debug an issue on a SAME70 processor. It's getting stuck in Dummy_Handler() which is the default interrupt handler for unused IRQs. I would like to know how it got there.
There is a bit set in NVICIABR1 (NVIC interrupt active bit register) which should indicate which interrupt occurred. However, I can't find any documentation for this register. Is there somewhere I can look to find out which interrupt this bit corresponds to?