Reading temperature data from DS18B20 sensor using nRF5340-DK

Question

Hello everyone , I'm having trouble activating my DS18B20 temperature sensor (waterproof) with the nRF5340, SDK v2.3.0, and VS Code. I'm using the "zephyr/samples/sensor/ds18b20" template and have created the overlay file, but when I try to flash it, I get the error " no device found" despite the wiring is correct

Wiring :

GND + GND (nrf5340)

VCC + VDD (nrf5340)

DATA + P1.10 (nrf5340)

I think that the problem is in the overlay file .

Thanks.

Here is my code

main.c

/*
 * Copyright (c) 2022 Thomas Stranger
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/devicetree.h>
#include <zephyr/drivers/sensor.h>

/*
 * Get a device structure from a devicetree node with compatible
 * "maxim,ds18b20". (If there are multiple, just pick one.)
 */
static const struct device *get_ds18b20_device(void)
{
	const struct device *const dev = DEVICE_DT_GET_ANY(maxim_ds18b20);

	if (dev == NULL) {
		/* No such node, or the node does not have status "okay". */
		printk("\nError: no device found.\n");
		return NULL;
	}

	if (!device_is_ready(dev)) {
		printk("\nError: Device \"%s\" is not ready; "
		       "check the driver initialization logs for errors.\n",
		       dev->name);
		return NULL;
	}

	printk("Found device \"%s\", getting sensor data\n", dev->name);
	return dev;
}

void main(void)
{
	const struct device *dev = get_ds18b20_device();

	if (dev == NULL) {
		return;
	}

	while (1) {
		struct sensor_value temp;

		sensor_sample_fetch(dev);
		sensor_channel_get(dev, SENSOR_CHAN_AMBIENT_TEMP, &temp);

		printk("Temp: %d.%06d\n", temp.val1, temp.val2);
		k_sleep(K_MSEC(2000));
	}
}

prj.conf

CONFIG_SENSOR=y
CONFIG_W1=y

CONFIG_LOG=y
CONFIG_SENSOR_LOG_LEVEL_DBG=y

C:\ncs\ds18b20\nrf5340dk_nrf5340_cpuapp.overlay

// To get started, press Ctrl+Space to bring up the completion menu and view the available nodes.

// You can also use the buttons in the sidebar to perform actions on nodes.
// Actions currently available include:

// * Enabling / disabling the node
// * Adding the bus to a bus
// * Removing the node
// * Connecting ADC channels

// For more help, browse the DeviceTree documentation at https://docs.zephyrproject.org/latest/guides/dts/index.html
// You can also visit the nRF DeviceTree extension documentation at https://nrfconnect.github.io/vscode-nrf-connect/devicetree/nrfdevicetree.html
/*
 * Copyright (c) 2022, Thomas Stranger
 *
 * SPDX-License-Identifier: Apache-2.0
 */

/*
 * Example configuration of a DS18B20 device on an Arduino serial bus.
 * Requires external circuit to provide an open-drain interface.
 */

 
 

	w1_0: w1-zephyr-serial-0 {
		compatible = "zephyr,w1-serial";
		#address-cells = <1>;
		#size-cells = <0>;
		status = "okay";

		ds18b20 {
			compatible = "maxim,ds18b20";
			family-code = <0x28>;
			resolution = <12>;
			status = "okay";
		};
	};