sergiotarxz/nuttx-apps
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

apps/examples/leds: An example showing how to use the LED driver

Browse Source
This commit is contained in:
Gregory Nutt 2016-02-20 12:11:42 -06:00
parent 54d2bb16f3
commit 790899508e
8 changed files with 363 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
ChangeLog.txt
View File

@ -1552,4 +1552,6 @@
the OS ARP table (2016-02-08).
* apps/nshlib: 'ps' command will show CPU if SMP is enabled
(2016-02-19).
* apps/examples/leds: An example to demonstrate use of LED
driver (2016-02-20).

1
examples/Kconfig
View File

@ -30,6 +30,7 @@ source "$APPSDIR/examples/keypadtest/Kconfig"
source "$APPSDIR/examples/igmp/Kconfig"
source "$APPSDIR/examples/i2schar/Kconfig"
source "$APPSDIR/examples/lcdrw/Kconfig"
source "$APPSDIR/examples/leds/Kconfig"
source "$APPSDIR/examples/ltdc/Kconfig"
source "$APPSDIR/examples/media/Kconfig"
source "$APPSDIR/examples/mm/Kconfig"

4
examples/README.txt
View File

@ -715,6 +715,10 @@ examples/lcdrw
NuttX is built as a protected, supervisor kernel (CONFIG_BUILD_PROTECTED
or CONFIG_BUILD_KERNEL).
examples/adc
^^^^^^^^^^^^
This is a simple test of the board LED driver at nuttx/drivers/leds/userled_*.c.
examples/ltdc
^^^^^^^^^^^^^

11
examples/leds/.gitignore vendored Normal file
View File

@ -0,0 +1,11 @@
/Make.dep
/.depend
/.built
/*.asm
/*.obj
/*.rel
/*.lst
/*.sym
/*.adb
/*.lib
/*.src

39
examples/leds/Kconfig Normal file
View File

@ -0,0 +1,39 @@
#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config EXAMPLES_LEDS
bool "LED driver example"
default n
depends on ARCH_HAVE_LEDS && !ARCH_LEDS
---help---
Enable the LED driversexample
if EXAMPLES_LEDS
config EXAMPLES_LEDS_PROGNAME
string "Program name"
default "leds"
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_LEDS_PRIORITY
int "LED task priority"
default 100
config EXAMPLES_LEDS_STACKSIZE
int "LED stack size"
default 2048
config EXAMPLES_LEDS_DEVPATH
string "LED device path"
default "/dev/userleds"
config EXAMPLES_LEDS_LEDSET
hex "Set of LEDs to use"
default 0x0f
endif

39
examples/leds/Make.defs Normal file
View File

@ -0,0 +1,39 @@
############################################################################
# apps/examples/leds/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.
#
############################################################################
ifeq ($(CONFIG_EXAMPLES_LEDS),y)
CONFIGURED_APPS += examples/leds
endif

56
examples/leds/Makefile Normal file
View File

@ -0,0 +1,56 @@
############################################################################
# apps/examples/leds/Makefile
#
# Copyright (C) 2008, 2010-2013 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
# Hello, World! built-in application info
CONFIG_EXAMPLES_LEDS_PRIORITY ?= SCHED_PRIORITY_DEFAULT
CONFIG_EXAMPLES_LEDS_STACKSIZE ?= 2048
APPNAME = leds
PRIORITY = $(CONFIG_EXAMPLES_LEDS_PRIORITY)
STACKSIZE = $(CONFIG_EXAMPLES_LEDS_STACKSIZE)
# Hello, World! Example
ASRCS =
CSRCS =
MAINSRC = leds_main.c
CONFIG_EXAMPLES_LEDS_PROGNAME ?= leds$(EXEEXT)
PROGNAME = $(CONFIG_EXAMPLES_LEDS_PROGNAME)
include $(APPDIR)/Application.mk

211
examples/leds/leds_main.c Normal file
View File

@ -0,0 +1,211 @@
/****************************************************************************
* examples/leds/leds_main.c
*
* Copyright (C) 2016 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <sys/ioctl.h>
#include <stdbool.h>
#include <stdlib.h>
#include <stdio.h>
#include <fcntl.h>
#include <sched.h>
#include <errno.h>
#include <nuttx/leds/userled.h>
/****************************************************************************
* Private Data
****************************************************************************/
static bool g_led_daemon_started;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: led_daemon
****************************************************************************/
static int led_daemon(int argc, char *argv[])
{
userled_set_t supported;
userled_set_t ledset;
bool incrementing;
int ret;
int fd;
/* Indicate that we are running */
g_led_daemon_started = true;
printf("led_daemon: Running\n");
/* Open the LED driver */
printf("led_daemon: Opening %s\n", CONFIG_EXAMPLES_LEDS_DEVPATH);
fd = open(CONFIG_EXAMPLES_LEDS_DEVPATH, O_RDWR);
if (fd < 0)
{
int errcode = errno;
printf("led_daemon: ERROR: Failed to open %s: %d\n",
CONFIG_EXAMPLES_LEDS_DEVPATH, errcode);
goto errout;
}
/* Get the set of LEDs supported */
ret = ioctl(fd, ULEDIOC_SUPPORTED,
(unsigned long)((uintptr_t)&supported));
if (ret < 0)
{
int errcode = errno;
printf("led_daemon: ERROR: ioctl(ULEDIOC_SUPPORTED) failed: %d\n",
errcode);
goto errout_with_fd;
}
printf("led_daemon: Supported LEDs 0x%02x\n", (unsigned int)supported);
/* Now loop forever, changing the LED set */
ledset = 0;
incrementing = true;
for (; ; )
{
userled_set_t newset;
userled_set_t tmp;
if (incrementing)
{
tmp = ledset;
do
{
tmp++;
newset = tmp & CONFIG_EXAMPLES_LEDS_LEDSET;
}
while (newset == ledset);
if (newset == 0)
{
incrementing = false;
continue;
}
}
else
{
if (ledset == 0)
{
incrementing = true;
continue;
}
tmp = ledset;
do
{
tmp--;
newset = tmp & CONFIG_EXAMPLES_LEDS_LEDSET;
}
while (newset == ledset);
}
ledset = newset;
printf("led_daemon: LED set 0x%02x\n", (unsigned int)ledset);
ret = ioctl(fd, ULEDIOC_SETALL, ledset);
if (ret < 0)
{
int errcode = errno;
printf("led_daemon: ERROR: ioctl(ULEDIOC_SUPPORTED) failed: %d\n",
errcode);
goto errout_with_fd;
}
usleep(500*1000L);
}
errout_with_fd:
(void)close(fd);
errout:
g_led_daemon_started = false;
return EXIT_FAILURE;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* leds_main
****************************************************************************/
#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char *argv[])
#else
int leds_main(int argc, char *argv[])
#endif
{
char *ledargv[2];
int ret;
if (g_led_daemon_started)
{
printf("leds_main: led_daemon already running\n");
return EXIT_SUCCESS;
}
ledargv[0] = "led_daemon";
ledargv[1] = NULL;
printf("leds_main: Starting the led_daemon\n");
ret = task_create("led_daemon", CONFIG_EXAMPLES_LEDS_PRIORITY,
CONFIG_EXAMPLES_LEDS_STACKSIZE, led_daemon,
(FAR char * const *)ledargv);
if (ret < 0)
{
int errcode = errno;
printf("leds_main: ERROR: Failed to start led_daemon: %d\n",
errcode);
return EXIT_FAILURE;
}
printf("led_daemon started\n");
return EXIT_SUCCESS;
}