Initialize AVR32UC with Zephyr OS for DHT22 Sensor Communication and Resolve Data Fetch Failure

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

const struct device *dht22_dev;

void main(void)
{
    printk("System initialized successfully.\n");

    dht22_dev = device_get_binding(DT_LABEL(DT_INST(0, aosong_dht22)));
    if (!dht22_dev) {
        printk("DHT22: Device driver not found.\n");
        return;
    }

    struct sensor_value temp, hum;
    
    if (sensor_sample_fetch(dht22_dev) < 0) {
        printk("DHT22: Failed to fetch data.\n");
        return;
    }

    sensor_channel_get(dht22_dev, SENSOR_CHAN_AMBIENT_TEMP, &temp);
    sensor_channel_get(dht22_dev, SENSOR_CHAN_HUMIDITY, &hum);

    printk("Temperature: %d.%d C\n", temp.val1, temp.val2);
    printk("Humidity: %d.%d %%\n", hum.val1, hum.val2);
}