nrf52810 does not enter low power during operation, occasional static current increases by 1.6mA

RE: nrf52810 does not enter low power during operation, occasional static current increases by 1.6mA

Kenneth — Wed, 19 Aug 2026 14:26:17 GMT

It's been a long time since I looked at the nRF5 SDK, which pin is the UART_EXTI_PIN in this case? Does it happen on only one specific pin or any pin? Is something connected to the pin that may pull it low externally? Have you probed the pin to see if there is anything happing on the pin? In the UART_EXTI_handler() can you also check that the pin is UART_EXTI_PIN?

Kenneth

RE: nrf52810 does not enter low power during operation, occasional static current increases by 1.6mA

Turbo J — Wed, 19 Aug 2026 07:49:27 GMT

Might be FPU exceptions. I don't remember if nrf_pwr_mgmt_run() skips these by default, and they will keep the MCU core running once triggered.

There should be sample code in the SDK that shows you how to clear them.

RE: nrf52810 does not enter low power during operation, occasional static current increases by 1.6mA

Pang0 — Wed, 19 Aug 2026 04:51:00 GMT

int main(void)
{
nrf_pwr_mgmt_init();
mg_softdevice_init();
mg_gpio_init();

for(;;)
{

if(NRF_LOG_PROCESS() == false)
{
nrf_pwr_mgmt_run();
}
}
}
void mg_softdevice_init(void) {
ret_code_t err_code = nrf_sdh_enable_request();
APP_ERROR_CHECK(err_code);

ASSERT(nrf_sdh_is_enabled());
}
void UART_EXTI_handler(nrf_drv_gpiote_pin_t pin, nrf_gpiote_polarity_t action)
{
if (action == NRF_GPIOTE_POLARITY_HITOLO)
{
}
}

void mg_gpio_init(void)
{
nrf_drv_gpiote_init();
nrf_drv_gpiote_in_config_t in_config = GPIOTE_CONFIG_IN_SENSE_HITOLO(true);
in_config.pull = NRF_GPIO_PIN_PULLUP;
nrf_drv_gpiote_in_init(UART_EXTI_PIN, &in_config, UART_EXTI_handler);
nrf_drv_gpiote_in_event_enable(UART_EXTI_PIN, true);
}