GPIO external interrupt

[storm_rd]

Hi,

I am working on GPIO external interrupt on LPC1769 board and having problems getting it to work. I have connected pin 2.11 to a push button and interrupt must be generated when the button is pushed. Any help is greatly appreciated. Thanks.. Below is the code, 

#define EINT0      0

void EINT0_IRQHandler(void)

{

LPC_GPIOINT->IO2IntClr = (1 << 11);

printf("0interrupt\n");

}

int main(void) {

LPC_PINCON->PINSEL4 &= ~(3<<20);

LPC_PINCON->PINSEL4 |= (1<<20);

LPC_GPIO2->FIODIR &= ~(1<<10);

// LPC_GPIOINT->IO2IntEnF |= (0x01 <<10);

LPC_SC->EXTMODE = (1<<EINT0);

LPC_SC->EXTPOLAR = (1<<EINT0);

NVIC_EnableIRQ(EINT0_IRQn);

while(1)

{

}

    return 0 ;

[jeremyzhou]

Hi Ramadevi Jayaraman 

Thank you for your interest in NXP Semiconductor products and 

the opportunity to serve you.

To provide the fastest possible support, I'd like to recommend you to refer to the periph_pinint demo of the LPCOpen library.

If you have any further questions about it, please feel free to contact with me.

Have a great day,

TIC

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