AnsweredAssumed Answered

MPC8343 can't trigger external interrupt on low-to-high transitions

Question asked by Scott Manton on May 2, 2012
Latest reply on May 3, 2012 by Scott Manton

Is it possible to trigger an external interrupt for both high-to-low and  low-to-high transitions?   

 

I'm trying to set up an edge triggered interrupt on an MPC8343, but I can only get it to trigger on high-to-low transitions.   According to MPC8349EARM.pdf the IPIC register SEMSR : IRQ4 can be configured to either high-to-low change or low assertion, but register GP2ICR says the interrupt can be configured for triggering on any change on the state of the port, or high-to-low change.   Which is correct? 

Outcomes