Zephyr scd4x measure and print sampling data

flash.log

west flash
-- west flash: rebuilding
ninja: no work to do.
-- west flash: using runner stm32cubeprogrammer
      -------------------------------------------------------------------
                        STM32CubeProgrammer v2.19.0
      -------------------------------------------------------------------

ST-LINK SN  : 066FFF554869774867243943
ST-LINK FW  : V2J33M25
Board       : NUCLEO-F411RE
Voltage     : 3.25V
SWD freq    : 4000 KHz
Connect mode: Under Reset
Reset mode  : Hardware reset
Device ID   : 0x431
Revision ID : Rev A
Device name : STM32F411xC/E
Flash size  : 512 KBytes
Device type : MCU
Device CPU  : Cortex-M4
BL Version  : 0xD0

Opening and parsing file: zephyr.hex


Memory Programming ...
  File          : zephyr.hex
  Size          : 52.21 KB
  Address       : 0x08000000



Erasing memory corresponding to sector 0:
Erasing internal memory sectors [0 3]
Download in Progress:
[==================================================] 100%

File download complete
Time elapsed during download operation: 00:00:01.341

RUNNING Program ...
  Address:      : 0x8000000
Application is running, Please Hold on...
Start operation achieved successfully

main.c

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

int main(void)
{
	const struct device *scd41 = DEVICE_DT_GET(DT_NODELABEL(scd4x));
	if (!device_is_ready(scd41)) {
		printk("SCD41 device not ready\n");
		return 1;
	}

	struct sensor_value co2, temp, humidity;

	while (1) {
		if (sensor_sample_fetch(scd41) < 0) {
			printk("Failed to fetch sample from SCD41\n");
			k_sleep(K_SECONDS(1));
			continue;
		}

		if (sensor_channel_get(scd41, SENSOR_CHAN_CO2, &co2) < 0 ||
						sensor_channel_get(scd41, SENSOR_CHAN_AMBIENT_TEMP, &temp) < 0 ||
						sensor_channel_get(scd41, SENSOR_CHAN_HUMIDITY, &humidity) < 0) {
			printk("Failed to get SCD41 channels\n");
			k_sleep(K_SECONDS(1));
			continue;
		}

		printk("scd41: CO2: %d ppm, Temp: %.2f C, Humidity: %.2f %%\n",
									co2.val1,
									sensor_value_to_float(&temp),
									sensor_value_to_float(&humidity));

		k_sleep(K_SECONDS(2));
	}

	return 0;
}

prj.conf

CONFIG_SHELL=y
CONFIG_SHELL_BACKEND_SERIAL=y
CONFIG_SHELL_HISTORY=y
CONFIG_SHELL_CMDS_RESIZE=y
CONFIG_I2C=y
CONFIG_I2C_SHELL=y
CONFIG_SENSOR=y
CONFIG_SCD4X=y

some.overlay

&i2c1 {
    status = "okay";
	scd4x: scd4x@62 {
		status = "okay";
		compatible = "sensirion,scd41";
		reg = <0x62>;
		mode = <0>;
	};
};