interrupt problem in 16bit controller while debugging of 24ep512gu814

[anboli]

hi,

Im using an 16bit microcontroller 24ep512gu814. I try to work out with the external interrupt. This microcontroller has 5 ext int, one is assigned directly to the pin(RD0), remaining 4 ext int have to configure with PPS(Peripheral Pin Select) Configuration.
I had configured the remaining 4 interrupts to RB0, RB1, RB2, RB3, by the help of RPINR0, RPINR1, RPINR2;
I enabled all the interrupts of INT1, INT2, INT3, INT4.
When I press the switch of RB0, the corresponding flag gets SET, but its not going to Interrupt Vector Loop(INT_EXT1) instead of its going to external interrupt 2(INT_EXT2) vector loop. For the RB1 the FLAG INT2IF = 1, entering to the loop (INT_EXT2).

For the RB2 and RB3, the corresponding flag is not setting(INT3IF and INT4IF), but the input is reading in the PORTB.

I had debug the program in PICKIT3;

I updated the program below...

#include <24ep512gu814.h>
#include "REGISTERS.h"
#include "PORT_BIT.h"

//////// Fuses: WRT,NOWRT,PROTECT,NOPROTECT,NOGSSK,GSSK,FRC,FRC_PLL,PR
//////// Fuses: PR_PLL,SOSC,LPRC,FRC_DIV_BY_16,FRC_PS,NOIESO,IESO,EC,XT,HS
//////// Fuses: NOPR,OSCIO,NOOSCIO,NOIOL1WAY,IOL1WAY,CKSFSM,CKSNOFSM
//////// Fuses: NOCKSNOFSM,WPOSTS1,WPOSTS2,WPOSTS3,WPOSTS4,WPOSTS5,WPOSTS6
//////// Fuses: WPOSTS7,WPOSTS8,WPOSTS9,WPOSTS10,WPOSTS11,WPOSTS12,WPOSTS13
//////// Fuses: WPOSTS14,WPOSTS15,WPOSTS16,WPRES32,WPRES128,NOPLLWAIT
//////// Fuses: PLLWAIT,NOWINDIS,WINDIS,NOWDT,WDT,NOPUT,PUT2,PUT4,PUT8,PUT16
//////// Fuses: PUT32,PUT64,PUT128,NOBROWNOUT,BROWNOUT,ALTI2C1,NOALTI2C1
//////// Fuses: ALTI2C2,NOALTI2C2,ICSP3,ICSP2,ICSP1,RESET_AUX,RESET_PRIMARY
//////// Fuses: NOJTAG,JTAG,DEBUG,NODEBUG,AWRT,NOAWRT,APROTECT,NOAPROTECT
//////// Fuses: NOAPLK,APLK

#Fuses NOWRT,NOPROTECT,NOGSSK,HS,NOWDT,NOBROWNOUT,NOJTAG,DEBUG,NOAPLK

#use delay(clock=25M)

unsigned int pulse_1 = 0,pulse_2 = 0;


#INT_EXT2
void isr_ext_2()
{
	disable_interrupts(INT_EXT2);

	clear_interrupt(INT_EXT2);

	pulse_2 = 1;
	
	return;
}

#INT_EXT1
void isr_ext_1()
{
	INT1E	=	0;
	
	INT1F	=	0;

	pulse_1 = 1;
	
	return;
}


void main()
{
	PMD1	=	0xFFFF;
	PMD2	=	0xFFFF;
	PMD3	=	0XFFFF;
	PMD4	=	0XFFFF;
	PMD5	=	0XFFFF;
	
	
	TRISB	        =	0XFFFF;			// making as input
	TRISD	=	0X0000;			// output
	
	ANSELA	=	0X0000;			// configuring as digital IO's
	ANSELB	= 	0X0000;			// configuring as digital IO's
	ANSELC	=	0X0000;			// configuring as digital IO's
	ANSELD	=	0X0000;			// configuring as digital IO's
	ANSELE	=	0X0000;			// configuring as digital IO's
	ANSELF	=	0X0000;			// configuring as digital IO's
	ANSELG	=	0X0000;			// configuring as digital IO's
	ANSELH	=	0X0000;			// configuring as digital IO's
	ANSELJ	=	0X0000;			// configuring as digital IO's
	ANSELK	= 	0X0000;			// configuring as digital IO's
	
	
	CNPUA	= 	0X0683;
	CNPUB	= 	0XFFFF;
	CNPUC	= 	0X001E;
	CNPUD	= 	0X0000;
	CNPUE	= 	0X03FF;
	CNPUF	= 	0X3000;
	CNPUG	= 	0X93C0;
	CNPUH	= 	0X001D;
	CNPUJ	= 	0XFFF0;
	CNPUK	= 	0XE003;
	
	INTCON2	=	0X8000;			//GIE=1, INT4EP=0, INT3EP=0, INT2EP=0, INT1EP=0;		falling edge interrupt
	
	RPINR0	=	0X2000;			// RPI32 ==== INT1		INT1= RB0, INT2 = RB1, INT3 = RB2, INT4 = RB3  0010 0000 0000 0000
	RPINR1	=	0X2221;			// RPI33 ==== INT2, RPI34 ==== INT3
	RPINR2	=	0X0023;			// RPI35 ==== INT4
	
//	IEC1	=	0X2010;			// INT1E = 1, INT2E = 1, 
//	IEC3	=	0X0060;			// INT3E = 1, INT4E = 1;
	
	IPC5	=	0x3210;
	IPC7	=	0X7654;
	IPC13	=	0xBA98;
	
//	INT1E	=	1;
//	INT2E	=	1;
//	INT3E	=	1;
//	INT4E	=	1;
	
	IFS1	=	0X0000;			// INT1F = 0, INT2F = 0
	IFS3	=	0X0000;			// INT3F = 0, INT3F = 0
	
	enable_interrupts(INT_EXT1);
	enable_interrupts(INT_EXT2);
	enable_interrupts(INT_EXT3);
	enable_interrupts(INT_EXT4);
	
	enable_interrupts(INTR_GLOBAL);
	
	RD12 = 1;

	RD12 = 0;


	RD4 = 1;

	RD4 = 0;

		
while(1)
{
	if(pulse_1)
	{
		pulse_1  = 0;
		
		RD12 = ~RD12;
		
		INT1E	=	1;
	}
	
	if(pulse_2)
	{
		pulse_2  = 0;
		
		RD4 = ~RD4;
		
		enable_interrupts(INT_EXT2);
	}
	
	RD13 = ~RD13;

}

}