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Hi,
I am using IRQ on MOD54415 to generate interrupts on both rising and falling edge. How can I figure out which edge caused the interrupt?

Thanks,
TM

Read the state of the pin....

Paul

Is there any specific way to read it because every time I read it I just get zeros.

Thanks again,
TM

See section 18.54.5 of the MCF5441XRM.pdf

Or try...
#include <sim.h>

//Read the current state of ALL IRQ pins...
//Bit 7 ie 0x80 will be IRQ7
//Bit 6 ie 0x40 will be IRQ6
//Bit 5 ie 0x20 will be IRQ5
//Bit 4 ie 0x10 will be IRQ4
//Bit 3 ie 0x08 will be IRQ3
//Bit 2 ie 0x04 will be IRQ2
//Bit 1 ie 0x02 will be IRQ1

BYTE state=sim2.eport.eppdr;

Hi I tried the above way before but it only returns zero!!

Thanks,
TM

If it only returns zeros, maybe only the low going ISR is happening?

Or maybe the high going ISR is a glitch....

For now I changed my code to go into interrupt at rising edge. Will post if I have success with the previous one.

Thanks again,
TM