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test/driver_dht: initial import

dev/timer
Ludwig Ortmann 8 years ago
parent
commit
fe17cae0c0
  1. 27
      tests/driver_dht/Makefile
  2. 66
      tests/driver_dht/main.c

27
tests/driver_dht/Makefile

@ -0,0 +1,27 @@
APPLICATION = driver_dht
include ../Makefile.tests_common
FEATURES_REQUIRED = periph_gpio
# define default pin mappings for some boards:
ifneq (,$(filter stm32f4discovery,$(BOARD)))
export DHT_GPIO ?= GPIO_4
endif
USEMODULE += dht
ifneq (,$(DHT_TYPE))
CFLAGS += -DDHT_TYPE=$(DHT_TYPE)
else
# set random default
CFLAGS += -DDHT_TYPE=DHT11
endif
ifneq (,$(DHT_GPIO))
CFLAGS += -DDHT_GPIO=$(DHT_GPIO)
else
# set random default
CFLAGS += -DDHT_GPIO=GPIO_0
endif
include $(RIOTBASE)/Makefile.include

66
tests/driver_dht/main.c

@ -0,0 +1,66 @@
/*
* Copyright (C) 2015 Ludwig Ortmann, 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 Ortmann <ludwig.ortmann@fu-berlin.de>
* @author Christian Mehlis <mehlis@inf.fu-berlin.de>
*
* @}
*/
#ifndef DHT_TYPE
#error "DHT_TYPE not defined"
#endif
#ifndef DHT_GPIO
#error "DHT_GPIO not defined"
#endif
#include <stdio.h>
#include "hwtimer.h"
#include "timex.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_%i... ", 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);
hwtimer_wait(HWTIMER_TICKS(2000 * MS_IN_USEC));
}
return 0;
}
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