Karol, "guiapp_event_handlers is not an ISR", yes this is correct. IRQ9 is pin P0.4 and I believe that when I touch the LCD, the IC U3 on the SK-S7G2 (NRQ ) will pull this pin to LOW which trigger the IRQ9 interrupt. I just want to know where this guiapp_event_handlers.c is called when this interrupt event occurs. Thanks.
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