RE: How can I disable a device in order to achieve lower power consumption on nrf9160?

Sigurd — Thu, 10 Oct 2019 08:53:38 GMT

Hi,

[quote userid="80274" url="~/f/nordic-q-a/52966/how-can-i-disable-a-device-in-order-to-achieve-lower-power-consumption-on-nrf9160"]I am using several peripherals, such as UART, I2C and ADC.[/quote]

UART and I2C should have the power managment hooks in place. See this and this link. Seems like it's not yet implemented for the ADC driver.

When you are done using the peripheral, you could then you could call device_set_power_state(), snippet:

struct device *peripheral_dev;

static void peripheral_disable(void)
{

#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
	int err = device_set_power_state(peripheral_dev,
					 DEVICE_PM_OFF_STATE,
					 NULL, NULL);
	if (err) {
		LOG_ERR("peripheral disable failed");
	}
#endif
}

Alternatively, you might be able to call the nrfx uninit function for the peripheral directly.