nrf52832 irq issue

[zhangtao]

irq init  as below:

void irq_Handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
bool irq_level = nrfx_gpiote_in_is_set(pin);
NRF_LOG_INFO("irq_level = %d", irq_level);
if(!irq_level)
return;

if (pin == INT_num){

/**/

}

}

if (nrfx_gpiote_is_init() == FALSE)
{
nrf_drv_gpiote_init();
}
nrf_drv_gpiote_in_config_t config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(false);
config.pull = NRF_GPIO_PIN_NOPULL;
nrf_drv_gpiote_in_init(INT_num, &config, irq_Handler);
nrf_drv_gpiote_in_event_enable(INT_num, true);

I use port event, and muti-gpio irqs.Irq gpio connect a sensor`s irq pin.

I detect irq gpio level in irq_Handler(), high level is my need, the low level, not my need, would return.

Irq gpio I config not pull, no irq generate the gpio level is 0.sensor`s irq pin also config low level.

but I have a proble:

when the device bootup, the irq gpio will be pull up a  while,then the irq gpio level become 0. but the sensor irq pin not generate irq to pull  the nrf52`s irq gpio.

as

[Stian Røed Hafskjold]

I'm not sure if I understand the problem here. What do you mean with "device bootup"? Is that the nRF52 or the sensor booting up? Typically you would wait to configure the GPIOTE on the nRF52 until the sensor has booted up and is ready to send signals.

If you want the signal to be stable, and not floating, while the sensor is turned off, you will need a pull down resistor, either internal or external.