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Add a new buttons example that uses the button character driver instead of the architecture buttons directly

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This commit is contained in:
Alan Carvalho de Assis 2016-10-11 14:25:55 -06:00 committed by Gregory Nutt
parent f29c444363
commit 909a4ec2ce
7 changed files with 598 additions and 2 deletions
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2
examples/README.txt
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@ -177,7 +177,7 @@ examples/bridge
examples/buttons
^^^^^^^^^^^^^^^^
To be provided
To be provided
examples/can
^^^^^^^^^^^^

2
examples/archbuttons/Makefile
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@ -1,5 +1,5 @@
############################################################################
# apps/examples/buttons/Makefile
# apps/examples/archbuttons/Makefile
#
# Copyright (C) 2011-2012 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>

11
examples/buttons/.gitignore vendored Normal file
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@ -0,0 +1,11 @@
/Make.dep
/.depend
/.built
/*.asm
/*.obj
/*.rel
/*.lst
/*.sym
/*.adb
/*.lib
/*.src

80
examples/buttons/Kconfig Normal file
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@ -0,0 +1,80 @@
#
# For a description of the syntax of this configuration file,
# see the file kconfig-language.txt in the NuttX tools repository.
#
config EXAMPLES_BUTTONS
bool "Buttons driver example"
default n
depends on ARCH_HAVE_BUTTONS
---help---
Enable the Buttons drivers example
if EXAMPLES_BUTTONS
config EXAMPLES_BUTTONS_PROGNAME
string "Program name"
default "buttons"
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_BUTTONS_PRIORITY
int "LED task priority"
default 100
config EXAMPLES_BUTTONS_STACKSIZE
int "LED stack size"
default 2048
config EXAMPLES_BUTTONS_DEVPATH
string "LED device path"
default "/dev/buttons"
config EXAMPLES_BUTTONS_NAMES
bool "Show Buttons Names"
default n
---help---
Enable to show the button's name in the application.
if EXAMPLES_BUTTONS_NAMES
config EXAMPLES_BUTTONS_QTD
int "Quantity of Buttons in the Board"
default 8
config EXAMPLES_BUTTONS_NAME0
string "Button 0 Name"
default "BUTTON0"
config EXAMPLES_BUTTONS_NAME1
string "Button 1 Name"
default "BUTTON1"
config EXAMPLES_BUTTONS_NAME2
string "Button 2 Name"
default "BUTTON2"
config EXAMPLES_BUTTONS_NAME3
string "Button 3 Name"
default "BUTTON3"
config EXAMPLES_BUTTONS_NAME4
string "Button 4 Name"
default "BUTTON4"
config EXAMPLES_BUTTONS_NAME5
string "Button 5 Name"
default "BUTTON5"
config EXAMPLES_BUTTONS_NAME6
string "Button 6 Name"
default "BUTTON6"
config EXAMPLES_BUTTONS_NAME7
string "Button 7 Name"
default "BUTTON7"
endif # EXAMPLES_BUTTONS_NAMES
endif # EXAMPLES_BUTTONS

39
examples/buttons/Make.defs Normal file
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@ -0,0 +1,39 @@
############################################################################
# apps/examples/buttons/Make.defs
# Adds selected applications to apps/ build
#
# 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.
#
############################################################################
ifeq ($(CONFIG_EXAMPLES_BUTTONS),y)
CONFIGURED_APPS += examples/buttons
endif

56
examples/buttons/Makefile Normal file
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@ -0,0 +1,56 @@
############################################################################
# apps/examples/buttons/Makefile
#
# 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.
#
############################################################################
-include $(TOPDIR)/Make.defs
# LED driver test built-in application info
CONFIG_EXAMPLES_BUTTONS_PRIORITY ?= SCHED_PRIORITY_DEFAULT
CONFIG_EXAMPLES_BUTTONS_STACKSIZE ?= 2048
APPNAME = buttons
PRIORITY = $(CONFIG_EXAMPLES_BUTTONS_PRIORITY)
STACKSIZE = $(CONFIG_EXAMPLES_BUTTONS_STACKSIZE)
# LED driver test
ASRCS =
CSRCS =
MAINSRC = buttons_main.c
CONFIG_EXAMPLES_BUTTONS_PROGNAME ?= buttons$(EXEEXT)
PROGNAME = $(CONFIG_EXAMPLES_BUTTONS_PROGNAME)
include $(APPDIR)/Application.mk

410
examples/buttons/buttons_main.c Normal file
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@ -0,0 +1,410 @@
/****************************************************************************
* examples/buttons/buttons_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 <string.h>
#include <stdio.h>
#include <poll.h>
#include <fcntl.h>
#include <sched.h>
#include <errno.h>
#include <nuttx/input/buttons.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#ifndef CONFIG_BUTTONS
# error "CONFIG_BUTTONS is not defined in the configuration"
#endif
#if defined(CONFIG_DISABLE_SIGNALS) && defined(CONFIG_DISABLE_POLL)
# error "You need at least SIGNALS or POLL support to read buttons"
#endif
#if !defined(CONFIG_DISABLE_SIGNALS) && !defined(CONFIG_DISABLE_POLL)
# define USE_NOTIFY_SIGNAL 1
#else
# define USE_NOFITY_POLL 1
#endif
#ifndef CONFIG_BUTTONS_NPOLLWAITERS
# define CONFIG_BUTTONS_NPOLLWAITERS 2
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_SIGNO
# define CONFIG_EXAMPLES_BUTTONS_SIGNO 13
#endif
#ifndef CONFIG_BUTTONS_POLL_DELAY
# define CONFIG_BUTTONS_POLL_DELAY 1000
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME0
# define CONFIG_EXAMPLES_BUTTONS_NAME0 "BUTTON0"
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME1
# define CONFIG_EXAMPLES_BUTTONS_NAME1 "BUTTON1"
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME2
# define CONFIG_EXAMPLES_BUTTONS_NAME2 "BUTTON2"
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME3
# define CONFIG_EXAMPLES_BUTTONS_NAME3 "BUTTON3"
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME4
# define CONFIG_EXAMPLES_BUTTONS_NAME4 "BUTTON4"
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME5
# define CONFIG_EXAMPLES_BUTTONS_NAME5 "BUTTON5"
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME6
# define CONFIG_EXAMPLES_BUTTONS_NAME6 "BUTTON6"
#endif
#ifndef CONFIG_EXAMPLES_BUTTONS_NAME7
# define CONFIG_EXAMPLES_BUTTONS_NAME7 "BUTTON7"
#endif
#define BUTTON_MAX 8
#ifndef CONFIG_EXAMPLES_BUTTONS_QTD
# define CONFIG_EXAMPLES_BUTTONS_QTD BUTTON_MAX
#endif
#if CONFIG_EXAMPLES_BUTTONS_QTD > 8
# error "CONFIG_EXAMPLES_BUTTONS_QTD > 8"
#endif
#ifdef CONFIG_EXAMPLES_BUTTONS_NAMES
char button_name[CONFIG_EXAMPLES_BUTTONS_QTD][16] =
{
CONFIG_EXAMPLES_BUTTONS_NAME0,
CONFIG_EXAMPLES_BUTTONS_NAME1,
CONFIG_EXAMPLES_BUTTONS_NAME2,
CONFIG_EXAMPLES_BUTTONS_NAME3,
CONFIG_EXAMPLES_BUTTONS_NAME4,
CONFIG_EXAMPLES_BUTTONS_NAME5,
CONFIG_EXAMPLES_BUTTONS_NAME6,
CONFIG_EXAMPLES_BUTTONS_NAME7,
};
#endif
/****************************************************************************
* Private Data
****************************************************************************/
static bool g_button_daemon_started;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: button_daemon
****************************************************************************/
static int button_daemon(int argc, char *argv[])
{
#ifdef USE_NOTIFY_POLL
struct pollfd fds[CONFIG_BUTTONS_NPOLLWAITERS];
#endif
#ifdef USE_NOTIFY_SIGNAL
struct btn_notify_s btnevents;
#endif
btn_buttonset_t supported;
btn_buttonset_t sample = 0;
#ifdef CONFIG_EXAMPLES_BUTTONS_NAMES
btn_buttonset_t oldsample = 0;
int i;
#endif
int ret;
int fd;
/* Indicate that we are running */
g_button_daemon_started = true;
printf("button_daemon: Running\n");
/* Open the BUTTON driver */
printf("button_daemon: Opening %s\n", CONFIG_EXAMPLES_BUTTONS_DEVPATH);
fd = open(CONFIG_EXAMPLES_BUTTONS_DEVPATH, O_RDONLY|O_NONBLOCK);
if (fd < 0)
{
int errcode = errno;
printf("button_daemon: ERROR: Failed to open %s: %d\n",
CONFIG_EXAMPLES_BUTTONS_DEVPATH, errcode);
goto errout;
}
/* Get the set of BUTTONs supported */
ret = ioctl(fd, BTNIOC_SUPPORTED,
(unsigned long)((uintptr_t)&supported));
if (ret < 0)
{
int errcode = errno;
printf("button_daemon: ERROR: ioctl(BTNIOC_SUPPORTED) failed: %d\n",
errcode);
goto errout_with_fd;
}
printf("button_daemon: Supported BUTTONs 0x%02x\n", (unsigned int)supported);
#ifdef USE_NOTIFY_SIGNAL
/* Define the notifications events */
btnevents.bn_press = supported;
btnevents.bn_release = supported;
btnevents.bn_signo = CONFIG_EXAMPLES_BUTTONS_SIGNO;
/* Register to receive a signal when buttons are pressed/released */
ret = ioctl(fd, BTNIOC_REGISTER,
(unsigned long)((uintptr_t)&btnevents));
if (ret < 0)
{
int errcode = errno;
printf("button_daemon: ERROR: ioctl(BTNIOC_SUPPORTED) failed: %d\n",
errcode);
goto errout_with_fd;
}
#endif
/* Now loop forever, waiting BUTTONs events */
for (; ; )
{
#ifdef USE_NOTIFY_SIGNAL
struct siginfo value;
sigset_t set;
#endif
#ifdef USE_NOTIFY_POLL
bool timeout;
bool pollin;
int nbytes;
#endif
#ifdef USE_NOTIFY_SIGNAL
/* Wait for a signal */
(void)sigemptyset(&set);
(void)sigaddset(&set, CONFIG_EXAMPLES_BUTTONS_SIGNO);
ret = sigwaitinfo(&set, &value);
if (ret < 0)
{
int errcode = errno;
printf("button_daemon: ERROR: sigwaitinfo() failed: %d\n", errcode);
goto errout_with_fd;
}
sample = (btn_buttonset_t)value.si_value.sival_int;
#endif
#ifdef USE_NOTIFY_POLL
/* Prepare the File Descriptor for poll */
memset(fds, 0, sizeof(struct pollfd)*CONFIG_BUTTONS_NPOLLWAITERS);
fds[0].fd = fd;
fds[0].events = POLLIN;
timeout = false;
pollin = false;
ret = poll(fds, CONFIG_BUTTONS_NPOLLWAITERS, CONFIG_BUTTONS_POLL_DELAY);
printf("\nbutton_daemon: poll returned: %d\n", ret);
if (ret < 0)
{
int errcode = errno;
printf("button_daemon: ERROR poll failed: %d\n", errcode);
}
else if (ret == 0)
{
printf("button_daemon: Timeout\n");
timeout = true;
}
else if (ret > CONFIG_BUTTONS_NPOLLWAITERS)
{
printf("button_daemon: ERROR poll reported: %d\n", errno);
}
else
{
pollin = true;
}
/* In any event, read until the pipe is empty */
for (i = 0; i < CONFIG_BUTTONS_NPOLLWAITERS; i++)
{
do
{
nbytes = read(fds[i].fd, (void *)&sample,
sizeof(btn_buttonset_t));
if (nbytes <= 0)
{
if (nbytes == 0 || errno == EAGAIN)
{
if ((fds[i].revents & POLLIN) != 0)
{
printf("button_daemon: ERROR no read data[%d]\n", i);
}
}
else if (errno != EINTR)
{
printf("button_daemon: read[%d] failed: %d\n", i, errno);
}
nbytes = 0;
}
else
{
if (timeout)
{
printf("button_daemon: ERROR? Poll timeout, but data read[%d]\n", i);
printf(" (might just be a race condition)\n");
}
}
/* Suppress error report if no read data on the next time through */
fds[i].revents = 0;
}
while (nbytes > 0);
}
#endif
#ifdef CONFIG_EXAMPLES_BUTTONS_NAMES
/* Print name of all pressed/release button */
for (i = 0; i < CONFIG_EXAMPLES_BUTTONS_QTD; i++)
{
if ((sample & (1 << i)) && !(oldsample & (1 << i)))
{
printf("%s was pressed\n", button_name[i]);
}
if (!(sample & (1 << i)) && (oldsample & (1 << i)))
{
printf("%s was released\n", button_name[i]);
}
}
oldsample = sample;
#else
printf("Sample = %d\n", sample);
#endif
/* Make sure that everything is displayed */
fflush(stdout);
usleep(1000);
}
errout_with_fd:
(void)close(fd);
errout:
g_button_daemon_started = false;
printf("button_daemon: Terminating\n");
return EXIT_FAILURE;
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* buttons_main
****************************************************************************/
#ifdef CONFIG_BUILD_KERNEL
int main(int argc, FAR char *argv[])
#else
int buttons_main(int argc, FAR char *argv[])
#endif
{
FAR char *buttonargv[2];
int ret;
printf("buttons_main: Starting the button_daemon\n");
if (g_button_daemon_started)
{
printf("buttons_main: button_daemon already running\n");
return EXIT_SUCCESS;
}
buttonargv[0] = "button_daemon";
buttonargv[1] = NULL;
ret = task_create("button_daemon", CONFIG_EXAMPLES_BUTTONS_PRIORITY,
CONFIG_EXAMPLES_BUTTONS_STACKSIZE, button_daemon,
(FAR char * const *)buttonargv);
if (ret < 0)
{
int errcode = errno;
printf("buttons_main: ERROR: Failed to start button_daemon: %d\n",
errcode);
return EXIT_FAILURE;
}
printf("buttons_main: button_daemon started\n");
return EXIT_SUCCESS;
}