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apps/ltr308: add simple application to test ltr308 sensor

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Signed-off-by: Robert-Ionut Alexa <robertalexa2000@gmail.com>
This commit is contained in:
Robert-Ionut Alexa 2022-10-09 16:20:29 +03:00 committed by Xiang Xiao
parent fd22b63722
commit e517dfd672
4 changed files with 179 additions and 0 deletions
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30
examples/ltr308/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_LTR308
tristate "LTR308 ambient light sensor example"
default n
depends on SENSORS_LTR308
---help---
Enable the LTR308 example
if EXAMPLES_LTR308
config EXAMPLES_LTR308_PROGNAME
string "Program name"
default "ltr308"
---help---
This is the name of the program that will be used when the NSH ELF
program is installed.
config EXAMPLES_LTR308_PRIORITY
int "LTR308 task priority"
default 100
config EXAMPLES_LTR308_STACKSIZE
int "LTR308 stack size"
default DEFAULT_TASK_STACKSIZE
endif

23
examples/ltr308/Make.defs Normal file
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############################################################################
# apps/examples/ltr308/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_LTR308),)
CONFIGURED_APPS += $(APPDIR)/examples/ltr308
endif

34
examples/ltr308/Makefile Normal file
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############################################################################
# apps/examples/ltr308/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
# LTR308 ambient light sensor example built-in application info
PROGNAME = $(CONFIG_EXAMPLES_LTR308_PROGNAME)
PRIORITY = $(CONFIG_EXAMPLES_LTR308_PRIORITY)
STACKSIZE = $(CONFIG_EXAMPLES_LTR308_STACKSIZE)
MODULE = $(CONFIG_EXAMPLES_LTR308)
# LTR308 ambient light sensor example
MAINSRC = ltr308_main.c
include $(APPDIR)/Application.mk

92
examples/ltr308/ltr308_main.c Normal file
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/****************************************************************************
* apps/examples/ltr308/ltr308_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/ioctl.h>
#include <nuttx/sensors/sensor.h>
#include <nuttx/sensors/ltr308.h>
#include <stdio.h>
#include <string.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <poll.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* ltr308_main
****************************************************************************/
int main(int argc, FAR char *argv[])
{
struct ltr308_calibval calibval;
struct sensor_light light;
struct pollfd pfd;
int ret;
int fd;
fd = open("/dev/uorb/sensor_light0", O_RDONLY);
if (fd < 0)
{
perror("Could not open file");
return fd;
}
calibval.integration_time = 1;
calibval.measurement_rate = 2;
calibval.gain = 1;
ret = ioctl(fd, SNIOC_CALIBRATE, &calibval);
if (ret < 0)
{
perror("Could not calibrate sensor");
goto err_out;
}
memset(&pfd, 0, sizeof(struct pollfd));
pfd.fd = fd;
pfd.events = POLLIN;
ret = poll(&pfd, 1, -1);
if (ret < 0)
{
perror("Could not poll sensor");
goto err_out;
}
ret = read(fd, &light, sizeof(struct sensor_light));
if (ret < 0)
{
perror("Could not read from sensor");
goto err_out;
}
printf("timestamp: %llu, lux: %f\n", light.timestamp, light.light);
return OK;
err_out:
close(fd);
return ret;
}