Question on proving interrupt priority on vectored IRQ interrupts
2004-12-01 by ©@°Ø¦â¤p¿ß
Hi everyone, I am using LPC2106 at the moment and only got the general purpose timer (Timer0 & Timer1) setup. I am using vectored IRQ handler to handle the interrupts produced by each timer. I put the IRQ interrrupt from Timer0 in the the first slot of priority table, and interrupts from Timer1 have been assigned to the second slot of the priority table. so that when both interrupts occur at the same time the interrupt handler for Timer0 would be executed first according to the priority table. The question I would like to ask is that how do I "prove" that, when both interrupts occured at the same time (when both timer's MR value are set at the same amount), Timer0's handler function would be executed before Timer1's handler function? I know that because of the priority for vectored IRQs would decide this, but the point is how do I prove that the priority does exist to someone by modifing my interrupt handler function? (perhaps using "VICRawIntr"?) and if so, how do I implement that? thank you!