You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
65 lines
1.7 KiB
65 lines
1.7 KiB
/* |
|
* Copyright (C) 2015 Ludwig Knüpfer, Christian Mehlis |
|
* 2016 Freie Universität Berlin |
|
* |
|
* This file is subject to the terms and conditions of the GNU Lesser |
|
* General Public License v2.1. See the file LICENSE in the top level |
|
* directory for more details. |
|
*/ |
|
|
|
/** |
|
* @ingroup tests |
|
* @{ |
|
* |
|
* @file |
|
* @brief Test application for the dht humidity and temperature sensor driver |
|
* |
|
* @author Ludwig Knüpfer <ludwig.knuepfer@fu-berlin.de> |
|
* @author Christian Mehlis <mehlis@inf.fu-berlin.de> |
|
* @author Hauke Petersen <hauke.petersen@fu-berlin.de> |
|
* |
|
* @} |
|
*/ |
|
|
|
#include <stdio.h> |
|
|
|
#include "xtimer.h" |
|
#include "dht.h" |
|
#include "dht_params.h" |
|
|
|
extern dht_t dht_devs[]; |
|
|
|
int main(void) |
|
{ |
|
puts("DHT temperature and humidity sensor test application\n"); |
|
|
|
/* periodically read temp and humidity values */ |
|
while (1) { |
|
for (unsigned i = 0; i < DHT_NUMOF; i++) { |
|
dht_t *dev = &dht_devs[i]; |
|
int16_t temp, hum; |
|
int16_t dec_temp, dec_hum, int_temp, int_hum; |
|
|
|
if (dht_read(dev, &temp, &hum) == -1) { |
|
puts("error reading data"); |
|
continue; |
|
} |
|
|
|
/* split up values into integral and fractional parts for nicer |
|
* printing |
|
* TODO: this should be done in some kind of library... */ |
|
int_temp = temp / 10; |
|
dec_temp = temp - (int_temp * 10); |
|
int_hum = hum / 10; |
|
dec_hum = hum - (int_hum * 10); |
|
|
|
printf("DHT device #%u - ", i); |
|
printf("temp: %i.%i°C, ", int_temp, dec_temp); |
|
printf("relative humidity: %i.%i%%\n", int_hum, dec_hum); |
|
|
|
xtimer_usleep(2000 * US_PER_MS); |
|
} |
|
} |
|
|
|
return 0; |
|
}
|
|
|