Hi Guys,
I had setup the interrupts in LPC214x. I had given Interrupt priority slot 0 to a RTC function for reading and displaying time every sec (An RTC interrupt occurs every sec). The RTC interrupt works fine.I had introduced an external Interrupt for which I had given a slot priority of 15. I had set the interrupt on the external pin for active high state with a level sensitive. When the key is pressed the pin is driven to high state. I see that when the key is kept pressed the RTC interrupt is not serviced. But when key is released again the system services the RTC interrupts. Why is the RTC interrupt not serviced when an external interrupt key is kept pressed. Is it system servicing the external interrupt continously. But why the priority is not comming to picture. What could be the reason. Should I do any other settings?