How to write ISR macro for 2 pins on the same port in PIC32MZ2048ECH144 using Microchip Harmony Configurator(MHC)? - embedded

Question

I am using PIC32MZ2048ECH144. I have two switches connected to RH8(pin Number 81) and RH9(pin Number 82). I do not see any option in MHC to set interrupt at pin level, therefore I get the ISR generated for the port-H. I need the ISRs for each pin to be invoked separately.
Hence, in "system_init.c", in "SYS_Initialize" function I added the following lines,
PLIB_PORTS_PinChangeNoticePerPortEnable(PORTS_ID_0, PORT_CHANNEL_H, PORTS_BIT_POS_8);
PLIB_PORTS_PinChangeNoticePerPortEnable(PORTS_ID_0, PORT_CHANNEL_H, PORTS_BIT_POS_9);
The ISR generated by MHC in "system_interrupt.c":
void __ISR(_CHANGE_NOTICE_H_VECTOR, ipl3AUTO) _IntHandlerChangeNotification_PortH1(void)
{
PLIB_INT_SourceFlagClear(INT_ID_0,INT_SOURCE_CHANGE_NOTICE_H);
APP_SwitchChangeNoticed();
}
I replaced the above ISR macro with the below lines:
void __ISR(_ADC1_DATA22_VECTOR, ipl3AUTO) _IntHandlerChangeNotification_PortH1(void)
{
PLIB_INT_SourceFlagClear(INT_ID_0, INT_SOURCE_CHANGE_NOTICE);
APP_SwitchChangeNoticed();
}
void __ISR(_ADC1_DATA23_VECTOR, ipl3AUTO) _IntHandlerChangeNotification_PortH(void)
{
PLIB_INT_SourceFlagClear(INT_ID_0,INT_SOURCE_CHANGE_NOTICE_H);
test1();
}
This did not work out. I referred the link http://microchip.wikidot.com/faq:78. I feel I am wrong in choosing the vector numbers for the ISR macros from "/pic32mx/include/proc/p32mz2048ech144.h". (I used _ADC1_DATA22_VECTOR and _ADC1_DATA23_VECTOR thinking that the values against them 81 and 82 are pin numbers, which again did not work.) Any help or hints on how to set pin level interrupts(2 pins on the same port) would be really great! Kindly apologize for any mistakes in my post.
Thanks in advance.

Answer 1

The short answer is that what you are asking for cant be achieved directly with two separate ISRs. There is only one change notification ISR vector available for the whole H port. You would normally achieve what you are looking for with an added software check to determine which of your two pins is in a different state. Another method is to simple move your signal to another port (if your board is not finalized).
The name you give the function has no bearing on what the ISR will react to. The real magic comes in the __ISR macro arguments.
For example:
void __ISR(_CHANGE_NOTICE_H_VECTOR, ipl3AUTO) _IntHandler1234()
Notice the _CHANGE_NOTICE_H_VECTOR; it signifies that this interrupt service routine will be called when the change notification interrupt happens on port H.