GPIOTE current consumption in nrf52832

[ande_dewal]

Hi everyone,

I am working on nrf52832 using sdk15.0.0 using ble_app_beacon

I getting 3mA current when falling edge detected, i want to set my device as low low power consume.

which setting need to required when nrf_drv_gpiote.c file used on custom board nrf52.

plese check this below configuration for gpiote ,

static void gpiote_setup()
{
ret_code_t err_code;
// nrf_drv_gpiote_in_config_t i_config = GPIOTE_CONFIG_IN_SENSE_TOGGLE(true);
nrf_drv_gpiote_in_config_t i_config = GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
i_config.pull =NRF_GPIO_PIN_NOPULL;
// i_config.pull =NRF_GPIO_PIN_PULLUP;

err_code = nrf_drv_gpiote_in_init(INPUT_pin, &i_config, GPIOTE_handler); //Configure the second pin. Event handler assigned to store value.
APP_ERROR_CHECK(err_code);
nrf_drv_gpiote_in_event_enable(INPUT_pin, true);
}

I am also try by changing bool paramter in this function nrf_drv_gpiote_in_config_t i_config = GPIOTE_CONFIG_IN_SENSE_HITOLO(false);

still getting current is in between 3mA to 2.85mA.

please someone help me for setting this configuration in low power consumption mode.

[Jared]

Hi.

 Is the current static at 3mA, or is it only a short period? Most of the power should be used by the radio, so you should see a current consumption that varies accordingly to the radio activity. Adding a GPIOTE IN channel should only increase the current of about 0.1 µA. How much current do you measure if you do the same on the development kit? And how do you measure the current?

regards

Jared 

[ande_dewal]

hi everyone,

After disable radio i am getting same current 3.29mA.

NRF_RADIO->TASKS_STOP=1;
NRF_RADIO->POWER=0;
NRF_RADIO->TASKS_DISABLE=1;

disable radio before gpiote_setup.

plaese, someone help me to reduce current on my custom board.

[niebert]

A GPIO configured the way you do it does not consume anything. The 3mA look like the consumption of a running core that is not sleeping. So it is a question of what your software does after the edge.

[ande_dewal]

Thanks for reply,

We are waiting in GPIOTE_handler() when falling edge is detected until rising edge. The Low_pulse time is nearly about 5 to 7seconds for that much time current  consumption is 3.44mA. after that it is 0.02mA.

what should I do to reduce current consumption in GPIOTE_handler()?

[niebert]

Waiting in an interrupt handler is almost always bad practice. It would be better to handle the two events separately with handler calls. You have to organize your program logic in some way to make that possible. There are many options for that.