GPIO IN_EVENT to GPIO PORT Event

[michael]

Hello, I'm new to Nordic SDK and I would like to ask you for help with change of GPIO IN_EVENT to GPIO PORT event implementation. The reason is we are using revision < 3 and I need to decrease power consumption.

Current implementation is like following:

void init_gpio_button()
{
    nrf_gpio_cfg_input(GPIO_BUTTON, NRF_GPIO_PIN_PULLUP);

	uint32_t err_code = nrf_drv_gpiote_init();
	APP_ERROR_CHECK(err_code);
  
    nrf_drv_gpiote_in_config_t btn = GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
	btn.pull = NRF_GPIO_PIN_PULLUP;

	nrf_drv_gpiote_in_uninit(GPIO_BUTTON);
	err_code = nrf_drv_gpiote_in_init(GPIO_BUTTON, &btn, btn_handler_isr);
	APP_ERROR_CHECK(err_code);

	nrf_drv_gpiote_in_event_enable(GPIO_BUTTON, true);
}

Is it enough to just set GPIOTE_CONFIG_IN_SENSE_HITOLO.hi_accuracy = false?

Thank you very much for your help.

[Sigurd]

I believe that if a port event is triggered on a low to high transition on a pin, a new port event can’t be triggered before that pin has gone low again or the pin is configured to sense low (which will trigger a new event on high to low transition). See the answers to this and this post.

You could try to use the GPIOTE_CONFIG_IN_SENSE_TOGGLE() instead.

[michael]

Thank you. This change is working :-)

[Enzo]

Hi,

I use custom 51822 board with sdk 12.3 and running nrf_nus sevice. I use port event to start uart peripheral so can lower power consumption. could you tell me the Exact power consumption of port event. When i measure current consumption it will be different when connect the configed port event pin to usb to ttl module or dsconnect it. i can't get it

[Sigurd]

Hi Enzo,

Please create a new question/ticket for your issue:

https://devzone.nordicsemi.com/support/add 

[Enzo]

sure