While testing many scenarios I noticed that controller gets flooded with ewarn and epass related interrupts if I disconnect the CAN cable or set incorrect baud rate. Depending on situation interrupts are arriving every 100-300uS. I am always reading CANINT register and CANSTS reg or adequate message object in my ISR, so interrupt gets cleared every time.
Ideally, I would like to be able to receive an interrupt only if something changes. e.g. ewarn or epass bit is set or goes away. Being interrupted every time just to see that situation has not changed since last interrupt does not seem necessary in my application.
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