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Port P problem for external interrupt

Question asked by Dora su on Sep 15, 2011
Latest reply on Sep 26, 2011 by Dora su

I would like to ask you something about MC9S12C32MFU25.I have problem  
by using "PortP" for external interrupt with sensor. It become '1'  
when sensor detect thing, then It don't become '0' when sensor doesn't  
detect anything. So, which part do I need to change setting of  
processor or software?