please why nrf52832 gpio does not produce Interrupt

[qianxuping]

Here is my program：

#define EXIT_PIN       31

void EXIT_Init(void)
{

nrf_gpio_cfg_input(EXIT_PIN,GPIO_PIN_CNF_PULL_Pullup);

NVIC_EnableIRQ(GPIOTE_IRQn);

NRF_GPIOTE->CONFIG[0] = (GPIOTE_CONFIG_POLARITY_HiToLo << GPIOTE_CONFIG_POLARITY_Pos)
| (EXIT_PIN << GPIOTE_CONFIG_PSEL_Pos)
| (GPIOTE_CONFIG_MODE_Event << GPIOTE_CONFIG_MODE_Pos);

NRF_GPIOTE->INTENSET = GPIOTE_INTENSET_IN0_Set << GPIOTE_INTENSET_IN0_Pos;// ʹÄÜÖжÏÀàÐÍ:
}

void GPIOTE_IRQHandler(void)
{

    if ((NRF_GPIOTE->EVENTS_IN[0] == 1) && (NRF_GPIOTE->INTENSET & GPIOTE_INTENSET_IN0_Msk))
    {
         NRF_GPIOTE->EVENTS_IN[0] = 0;

    }

}

but  Program cannot enter interrupt，i Looking at it with an oscilloscope, there is no low level。but i use Query ，i Looking at it with an oscilloscope, there is have low level. it works ok.

EXIT_PIN   is the pin which if data is ok ，Another device Pulls EXIT_PIN's level down.

Thanks very much.

[qianxuping]

i  changed in the  #include "nrfx_irqs_nrf52832.h",  because Symbol GPIOTE_IRQHandler multiply defined (by exit.o and nrfx_gpiote.o).

#include "nrfx_irqs_nrf52832.h"

// GPIOTE_IRQn
//#define nrfx_gpiote_irq_handler GPIOTE_IRQHandler