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apps/ examples/dhtxx: Example for the DHTxx sensor.

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Ouss4 2018-09-01 07:49:06 -06:00 committed by Gregory Nutt
parent 7b5c2de165
commit 316ffaddac
5 changed files with 231 additions and 0 deletions
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11
examples/dhtxx/.gitignore vendored Normal file
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/Make.dep
/.depend
/.built
/*.asm
/*.obj
/*.rel
/*.lst
/*.sym
/*.adb
/*.lib
/*.src

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examples/dhtxx/Kconfig Normal file
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#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config EXAMPLES_DHTXX
bool "Dhtxx sensor example"
default n
---help---
Enable the dhtxx sensor example
if EXAMPLES_DHTXX
config EXAMPLES_DHTXX_PROGNAME
string "Program name"
default "dhtxx"
depends on BUILD_KERNEL
---help---
This is the name of the program that will be use when the NSH ELF
program is installed.
config EXAMPLES_DHTXX_PRIORITY
int "Dhtxx task priority"
default 100
config EXAMPLES_DHTXX_STACKSIZE
int "Dhtxx stack size"
default 2048
endif

39
examples/dhtxx/Make.defs Normal file
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############################################################################
# apps/examples/dhtxx/Make.defs
# Adds selected applications to apps/ build
#
# Copyright (C) 2015 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
ifneq ($(CONFIG_EXAMPLES_DHTXX),)
CONFIGURED_APPS += examples/dhtxx
endif

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examples/dhtxx/Makefile Normal file
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############################################################################
# apps/examples/dhtxx/Makefile
#
# Copyright (C) 2018 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in
# the documentation and/or other materials provided with the
# distribution.
# 3. Neither the name NuttX nor the names of its contributors may be
# used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
# FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
# COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
# OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
############################################################################
-include $(TOPDIR)/Make.defs
# Dhtxx, World! built-in application info
CONFIG_EXAMPLES_DHTXX_PRIORITY ?= SCHED_PRIORITY_DEFAULT
CONFIG_EXAMPLES_DHTXX_STACKSIZE ?= 2048
APPNAME = dhtxx
ifeq ($(CONFIG_EXAMPLES_DHTXX),m)
LOADABLE = y
else
PRIORITY = $(CONFIG_EXAMPLES_DHTXX_PRIORITY)
STACKSIZE = $(CONFIG_EXAMPLES_DHTXX_STACKSIZE)
endif
# Dhtxx Example
ASRCS =
CSRCS =
MAINSRC = dhtxx_main.c
CONFIG_EXAMPLES_DHTXX_PROGNAME ?= dhtxx$(EXEEXT)
PROGNAME = $(CONFIG_EXAMPLES_DHTXX_PROGNAME)
include $(APPDIR)/Application.mk

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examples/dhtxx/dhtxx_main.c Normal file
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/****************************************************************************
* examples/dhtxx/dhtxx_main.c
*
* Copyright (C) 2018 Abdelatif GUETTOUCHE. All rights reserved.
* Author: Abdelatif GUETTOUCHE <abdelatif.guettouche@gmail.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <nuttx/sensors/dhtxx.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* dhtxx_main
****************************************************************************/
#ifdef BUILD_MODULE
int main(int argc, FAR char *argv[])
#else
int dhtxx_main(int argc, char *argv[])
#endif
{
struct dhtxx_sensor_data_s data;
int fd;
int ret;
int i;
printf("Dhtxx app is running.\n");
fd = open("/dev/dht0", O_RDWR);
for (i = 0; i < 20; i++)
{
ret = read(fd, &data, sizeof(struct dhtxx_sensor_data_s));
if (ret < 0)
{
printf("Read error.\n");
printf("Sensor reported error %d\n", data.status);
}
else
{
printf("Read successful.\n");
printf("Humidity = %2.2f %%, temperature = %2.2f C\n",
data.hum, data.temp);
}
sleep(1);
}
close(fd);
return 0;
}