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examples/scd41: Add new example for scd41 CO2 sensor

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Add new example for scd41 CO2 sensor application.
This commit is contained in:
SPRESENSE 2022-04-11 17:21:40 +09:00 committed by Xiang Xiao
parent c8bc287a29
commit f2e7faa478
4 changed files with 180 additions and 0 deletions
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36
examples/scd41/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_SCD41
tristate "SCD41 CO2 sensor example"
default n
depends on SENSORS_SCD41
---help---
Enable the SCD41 CO2 sensor example
if EXAMPLES_SCD41
config EXAMPLES_SCD41_PROGNAME
string "Program name"
default "scd41"
---help---
This is the name of the program that will be used when the NSH ELF
program is installed.
config EXAMPLES_SCD41_DEVPATH
string "Device path"
default "/dev/co2"
---help---
The device path
config EXAMPLES_SCD41_PRIORITY
int "scd41 task priority"
default 100
config EXAMPLES_SCD41_STACKSIZE
int "scd41 stack size"
default DEFAULT_TASK_STACKSIZE
endif

23
examples/scd41/Make.defs Normal file
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############################################################################
# apps/examples/scd41/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_SCD41),)
CONFIGURED_APPS += $(APPDIR)/examples/scd41
endif

34
examples/scd41/Makefile Normal file
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############################################################################
# apps/examples/scd41/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 $(APPDIR)/Make.defs
# scd41 co2 sensor built-in application info
PROGNAME = $(CONFIG_EXAMPLES_SCD41_PROGNAME)
PRIORITY = $(CONFIG_EXAMPLES_SCD41_PRIORITY)
STACKSIZE = $(CONFIG_EXAMPLES_SCD41_STACKSIZE)
MODULE = $(CONFIG_EXAMPLES_SCD41)
# scd41 co2 sensor Example
MAINSRC = scd41_main.c
include $(APPDIR)/Application.mk

87
examples/scd41/scd41_main.c Executable file
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/****************************************************************************
* apps/examples/scd41/scd41_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 <stdio.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <nuttx/sensors/scd41.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* scd41_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
struct scd41_conv_data_s data;
int fd;
int ret;
int i;
printf("scd41 app is running.\n");
fd = open(CONFIG_EXAMPLES_SCD41_DEVPATH, O_RDWR);
if (fd < 0)
{
printf("ERROR: open failed: %d\n", fd);
return -1;
}
for (i = 0; i < 20; i++)
{
/* Sensor data is updated every 5 seconds. */
sleep(5);
ret = ioctl(fd, SNIOC_READ_CONVERT_DATA, (unsigned long)&data);
if (ret < 0)
{
printf("Read error.\n");
printf("Sensor reported error %d\n", ret);
}
else
{
printf("CO2[ppm]: %.2f, Temperature[C]: %.2f, RH[%%]: %.2f\n",
data.co2, data.temperature, data.humidity);
}
}
ret = ioctl(fd, SNIOC_STOP, 0);
if (ret < 0)
{
printf("Failed to stop: %d\n", errno);
}
close(fd);
return 0;
}