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Hi, I am using STR9FAW44, and I get an external interrupt from WIU line 18(GPIO P6.2 pin). When CPU gets an interrupt from this pin it halts, it does not give any reaction. When I debug, it goes into interrupt routine, but when it returns from the intterrupt routine it jumps a memory address where includes some absurd things. Then it does noting.
What may be the cause of this problem?
ok. what do you do inside the ISR? maybe you are causing a stack overflow there?