blob: e6c0d4332749e561cbf50683bbac1d27cdf30702 [file] [log] [blame]
/*
* Copyright (c) 2019 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include <zephyr/device.h>
#include <zephyr/drivers/sensor.h>
#include <stdio.h>
static const char *now_str(void)
{
static char buf[16]; /* ...HH:MM:SS.MMM */
uint32_t now = k_uptime_get_32();
unsigned int ms = now % MSEC_PER_SEC;
unsigned int s;
unsigned int min;
unsigned int h;
now /= MSEC_PER_SEC;
s = now % 60U;
now /= 60U;
min = now % 60U;
now /= 60U;
h = now;
snprintf(buf, sizeof(buf), "%u:%02u:%02u.%03u",
h, min, s, ms);
return buf;
}
int main(void)
{
const struct device *const dht22 = DEVICE_DT_GET_ONE(aosong_dht);
if (!device_is_ready(dht22)) {
printf("Device %s is not ready\n", dht22->name);
return 0;
}
while (true) {
int rc = sensor_sample_fetch(dht22);
if (rc != 0) {
printf("Sensor fetch failed: %d\n", rc);
break;
}
struct sensor_value temperature;
struct sensor_value humidity;
rc = sensor_channel_get(dht22, SENSOR_CHAN_AMBIENT_TEMP,
&temperature);
if (rc == 0) {
rc = sensor_channel_get(dht22, SENSOR_CHAN_HUMIDITY,
&humidity);
}
if (rc != 0) {
printf("get failed: %d\n", rc);
break;
}
printf("[%s]: %.1f Cel ; %.1f %%RH\n",
now_str(),
sensor_value_to_double(&temperature),
sensor_value_to_double(&humidity));
k_sleep(K_SECONDS(2));
}
return 0;
}