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Example application for the hdc1008 driver.

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Pelle 2020-05-04 21:13:22 +02:00 committed by Abdelatif Guettouche
parent 779635afa6
commit 0704bd2e49
4 changed files with 235 additions and 0 deletions
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11
examples/hdc1008_demo/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_HDC1008
tristate "HDC1008 driver example"
default n
---help---
Enable the example application

23
examples/hdc1008_demo/Make.defs Normal file
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############################################################################
# apps/examples/hdc1008_demo/Make.defs
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################/
ifneq ($(CONFIG_EXAMPLES_HDC1008),)
CONFIGURED_APPS += $(APPDIR)/examples/hdc1008_demo
endif

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examples/hdc1008_demo/Makefile Normal file
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############################################################################
# apps/examples/hdc1008_demo/Makefile
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################/
-include $(TOPDIR)/Make.defs
# hdc1008 example built-in application info
PROGNAME = hdc1008
PRIORITY = SCHED_PRIORITY_DEFAULT
STACKSIZE = $(CONFIG_DEFAULT_TASK_STACKSIZE)
MODULE = $(CONFIG_EXAMPLES_HDC1008)
MAINSRC = hdc1008_main.c
include $(APPDIR)/Application.mk

169
examples/hdc1008_demo/hdc1008_main.c Normal file
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/****************************************************************************
* examples/hdc1008_demo/hdc1008_main.c
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <nuttx/sensors/hdc1008.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <fcntl.h>
#include <stdio.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define DEV_PATH "/dev/hdc1008"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* hdc1008_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
struct hdc1008_conv_data_s data;
int fd;
int ret;
int i;
uint8_t res[3];
char buf[16];
/* Available resolutions: 8/11/14 bits */
res[0] = 8;
res[1] = 11;
res[2] = 14;
fd = open(DEV_PATH, O_RDONLY);
if (fd < 0)
{
printf("Failed to open device driver at '%s'\n", DEV_PATH);
}
/* Read both t and rh */
ret = read(fd, buf, sizeof(buf));
if (ret < 0)
{
printf("FAILED to read temperature and rh: %d\n", errno);
goto out;
}
printf("Temperature and humidity\n"
"========================\n");
printf("data=%s%d\n\n", buf);
/* Measure using ioctl */
ret = ioctl(fd, SNIOC_MEASURE, (unsigned long)&data);
if (ret < 0)
{
printf("Failed to measure using ioctl: %d\n", errno);
goto out;
}
printf("Temperature and humidity (ioctl)\n"
"================================\n");
printf("t=%d.%d, h=%d.%d\n\n",
data.temperature / 100, data.temperature % 100,
data.humidity / 10, data.humidity % 10);
/* Enable heater */
ret = ioctl(fd, SNIOC_SET_HEATER_MODE, 1);
if (ret < 0)
{
printf("Failed to enable heater: %d\n", errno);
goto out;
}
/* Read only t */
ret = ioctl(fd, SNIOC_SET_OPERATIONAL_MODE, HDC1008_MEAS_TEMPERATURE);
if (ret < 0)
{
printf("Failed to set temperature measurement only: %d\n", errno);
goto out;
}
for (i = 1; i < 3; ++i)
{
ret = ioctl(fd, SNIOC_SET_RESOLUTION_T, res[i]);
if (ret < 0)
{
printf("Failed to set temperature resolution: %d\n", errno);
goto out;
}
ret = read(fd, buf, sizeof(buf));
printf("Temperature, %d bit resolution\n"
"==============================\n", res[i]);
printf("data=%s\n\n", buf);
}
/* Disable heater */
ret = ioctl(fd, SNIOC_SET_HEATER_MODE, 0);
if (ret < 0)
{
printf("Failed to disable heater: %d\n", errno);
goto out;
}
/* Read only rh */
ret = ioctl(fd, SNIOC_SET_OPERATIONAL_MODE, HDC1008_MEAS_HUMIDITY);
if (ret < 0)
{
printf("Failed to set humidity measurement only: %d\n", errno);
goto out;
}
for (i = 0; i < 3; ++i)
{
ret = ioctl(fd, SNIOC_SET_RESOLUTION_RH, res[i]);
if (ret < 0)
{
printf("Failed to set humidity resolution: %d\n", errno);
goto out;
}
ret = read(fd, buf, sizeof(buf));
printf("Humidity, %d bit resolution\n"
"===========\n", res[i]);
printf("data=%s\n\n", buf);
}
ret = 0;
out:
close(fd);
return ret;
}