/* * Copyright (C) 2015 Ludwig Knüpfer, Christian Mehlis * * 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 * @author Christian Mehlis * * @} */ #ifndef DHT_TYPE #error "DHT_TYPE not defined" #endif #ifndef DHT_GPIO #error "DHT_GPIO not defined" #endif #include #include "xtimer.h" #include "dht.h" int main(void) { dht_t dev; puts("DHT temperature and humidity sensor test application\n"); printf("Initializing DHT sensor at GPIO_%ld... ", (long)DHT_GPIO); if (dht_init(&dev, DHT_TYPE, DHT_GPIO) == 0) { puts("[OK]\n"); } else { puts("[Failed]"); return 1; } dht_data_t data; float temp, hum; while (1) { if (dht_read_raw(&dev, &data) == -1) { puts("error reading data"); } dht_parse(&dev, &data, &hum, &temp); printf("raw relative humidity: %i\nraw temperature: %i C\n", data.humidity, data.temperature); printf("relative humidity: %i\ntemperature: %i C\n", (int) hum, (int) temp); xtimer_usleep(2000 * MS_IN_USEC); } return 0; }