mirror of
https://gitee.com/mirrors_PX4/PX4-Autopilot.git
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Resync new repository with old repo r5166
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5153 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
@@ -0,0 +1,13 @@
|
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#
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||||
# For a description of the syntax of this configuration file,
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||||
# see misc/tools/kconfig-language.txt.
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||||
#
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||||
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||||
config EXAMPLES_BUTTONS
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||||
bool "Buttons example"
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||||
default n
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||||
---help---
|
||||
Enable the buttons example
|
||||
|
||||
if EXAMPLES_BUTTONS
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||||
endif
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||||
@@ -0,0 +1,105 @@
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||||
############################################################################
|
||||
# apps/examples/buttons/Makefile
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||||
#
|
||||
# Copyright (C) 2011 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)/.config
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||||
-include $(TOPDIR)/Make.defs
|
||||
include $(APPDIR)/Make.defs
|
||||
|
||||
# Hello, World! Example
|
||||
|
||||
ASRCS =
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CSRCS = buttons_main.c
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||||
|
||||
AOBJS = $(ASRCS:.S=$(OBJEXT))
|
||||
COBJS = $(CSRCS:.c=$(OBJEXT))
|
||||
|
||||
SRCS = $(ASRCS) $(CSRCS)
|
||||
OBJS = $(AOBJS) $(COBJS)
|
||||
|
||||
ifeq ($(WINTOOL),y)
|
||||
BIN = "${shell cygpath -w $(APPDIR)/libapps$(LIBEXT)}"
|
||||
else
|
||||
BIN = "$(APPDIR)/libapps$(LIBEXT)"
|
||||
endif
|
||||
|
||||
ROOTDEPPATH = --dep-path .
|
||||
|
||||
# Buttons built-in application info
|
||||
|
||||
APPNAME = buttons
|
||||
PRIORITY = SCHED_PRIORITY_DEFAULT
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||||
STACKSIZE = 2048
|
||||
|
||||
# Common build
|
||||
|
||||
VPATH =
|
||||
|
||||
all: .built
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||||
.PHONY: context clean depend distclean
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||||
|
||||
$(AOBJS): %$(OBJEXT): %.S
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||||
$(call ASSEMBLE, $<, $@)
|
||||
|
||||
$(COBJS): %$(OBJEXT): %.c
|
||||
$(call COMPILE, $<, $@)
|
||||
|
||||
.built: $(OBJS)
|
||||
@( for obj in $(OBJS) ; do \
|
||||
$(call ARCHIVE, $(BIN), $${obj}); \
|
||||
done ; )
|
||||
@touch .built
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||||
|
||||
.context:
|
||||
ifeq ($(CONFIG_NSH_BUILTIN_APPS),y)
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||||
$(call REGISTER,$(APPNAME),$(PRIORITY),$(STACKSIZE),$(APPNAME)_main)
|
||||
@touch $@
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||||
endif
|
||||
|
||||
context: .context
|
||||
|
||||
.depend: Makefile $(SRCS)
|
||||
@$(MKDEP) $(ROOTDEPPATH) $(CC) -- $(CFLAGS) -- $(SRCS) >Make.dep
|
||||
@touch $@
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||||
|
||||
depend: .depend
|
||||
|
||||
clean:
|
||||
@rm -f *.o *~ .*.swp .built
|
||||
$(call CLEAN)
|
||||
|
||||
distclean: clean
|
||||
@rm -f Make.dep .depend
|
||||
|
||||
-include Make.dep
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||||
@@ -0,0 +1,499 @@
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||||
/****************************************************************************
|
||||
* examples/buttons/buttons_main.c
|
||||
*
|
||||
* Copyright (C) 2011 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.
|
||||
*
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* NOTE: This test exercises internal button driver interfaces. As such, it
|
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* it relies on internal OS interfaces that are not normally available to a
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* user-space program. As a result, this example cannot be used if a
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||||
* NuttX is built as a protected, supervisor kernel (CONFIG_NUTTX_KERNEL).
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* Included Files
|
||||
****************************************************************************/
|
||||
|
||||
#include <nuttx/config.h>
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||||
#include <nuttx/arch.h>
|
||||
|
||||
#include <stdio.h>
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
#include <debug.h>
|
||||
|
||||
/****************************************************************************
|
||||
* Definitions
|
||||
****************************************************************************/
|
||||
/* Configuration ************************************************************/
|
||||
|
||||
#ifndef CONFIG_ARCH_BUTTONS
|
||||
# error "CONFIG_ARCH_BUTTONS is not defined in the configuration"
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||||
#endif
|
||||
|
||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME0
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||||
# define CONFIG_EXAMPLE_BUTTONS_NAME0 "BUTTON0"
|
||||
#endif
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||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME1
|
||||
# define CONFIG_EXAMPLE_BUTTONS_NAME1 "BUTTON1"
|
||||
#endif
|
||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME2
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||||
# define CONFIG_EXAMPLE_BUTTONS_NAME2 "BUTTON2"
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||||
#endif
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||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME3
|
||||
# define CONFIG_EXAMPLE_BUTTONS_NAME3 "BUTTON3"
|
||||
#endif
|
||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME4
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||||
# define CONFIG_EXAMPLE_BUTTONS_NAME4 "BUTTON4"
|
||||
#endif
|
||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME5
|
||||
# define CONFIG_EXAMPLE_BUTTONS_NAME5 "BUTTON5"
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||||
#endif
|
||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME6
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||||
# define CONFIG_EXAMPLE_BUTTONS_NAME6 "BUTTON6"
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||||
#endif
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||||
#ifndef CONFIG_EXAMPLE_BUTTONS_NAME7
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||||
# define CONFIG_EXAMPLE_BUTTONS_NAME7 "BUTTON7"
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||||
#endif
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||||
|
||||
#define BUTTON_MIN 0
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||||
#define BUTTON_MAX 7
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||||
|
||||
#ifndef CONFIG_EXAMPLE_BUTTONS_MIN
|
||||
# define CONFIG_EXAMPLE_BUTTONS_MIN BUTTON_MIN
|
||||
#endif
|
||||
#ifndef CONFIG_EXAMPLE_BUTTONS_MAX
|
||||
# define CONFIG_EXAMPLE_BUTTONS_MAX BUTTON_MAX
|
||||
#endif
|
||||
|
||||
#if CONFIG_EXAMPLE_BUTTONS_MIN > CONFIG_EXAMPLE_BUTTONS_MAX
|
||||
# error "CONFIG_EXAMPLE_BUTTONS_MIN > CONFIG_EXAMPLE_BUTTONS_MAX"
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||||
#endif
|
||||
#if CONFIG_EXAMPLE_BUTTONS_MAX > 7
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||||
# error "CONFIG_EXAMPLE_BUTTONS_MAX > 7"
|
||||
#endif
|
||||
|
||||
#ifndef CONFIG_EXAMPLE_IRQBUTTONS_MIN
|
||||
# define CONFIG_EXAMPLE_IRQBUTTONS_MIN CONFIG_EXAMPLE_BUTTONS_MIN
|
||||
#endif
|
||||
#ifndef CONFIG_EXAMPLE_IRQBUTTONS_MAX
|
||||
# define CONFIG_EXAMPLE_IRQBUTTONS_MAX CONFIG_EXAMPLE_BUTTONS_MAX
|
||||
#endif
|
||||
|
||||
#if CONFIG_EXAMPLE_IRQBUTTONS_MIN > CONFIG_EXAMPLE_IRQBUTTONS_MAX
|
||||
# error "CONFIG_EXAMPLE_IRQBUTTONS_MIN > CONFIG_EXAMPLE_IRQBUTTONS_MAX"
|
||||
#endif
|
||||
#if CONFIG_EXAMPLE_IRQBUTTONS_MAX > 7
|
||||
# error "CONFIG_EXAMPLE_IRQBUTTONS_MAX > 7"
|
||||
#endif
|
||||
|
||||
#ifndef MIN
|
||||
# define MIN(a,b) (a < b ? a : b)
|
||||
#endif
|
||||
#ifndef MAX
|
||||
# define MAX(a,b) (a > b ? a : b)
|
||||
#endif
|
||||
|
||||
#define MIN_BUTTON MIN(CONFIG_EXAMPLE_BUTTONS_MIN, CONFIG_EXAMPLE_IRQBUTTONS_MIN)
|
||||
#define MAX_BUTTON MAX(CONFIG_EXAMPLE_BUTTONS_MAX, CONFIG_EXAMPLE_IRQBUTTONS_MAX)
|
||||
|
||||
#define NUM_BUTTONS (MAX_BUTTON - MIN_BUTTON + 1)
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||||
#define BUTTON_INDEX(b) ((b)-MIN_BUTTON)
|
||||
|
||||
/****************************************************************************
|
||||
* Private Types
|
||||
****************************************************************************/
|
||||
|
||||
struct button_info_s
|
||||
{
|
||||
FAR const char *name; /* Name for the button */
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
xcpt_t handler; /* Button interrupt handler */
|
||||
#endif
|
||||
};
|
||||
|
||||
/****************************************************************************
|
||||
* Private Function Prototypes
|
||||
****************************************************************************/
|
||||
|
||||
static void show_buttons(uint8_t oldset, uint8_t newset);
|
||||
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
static void button_handler(int id, int irq);
|
||||
|
||||
#if MIN_BUTTON < 1
|
||||
static int button0_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#if MIN_BUTTON < 2 && MAX_BUTTON > 0
|
||||
static int button1_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#if MIN_BUTTON < 3 && MAX_BUTTON > 1
|
||||
static int button2_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#if MIN_BUTTON < 4 && MAX_BUTTON > 2
|
||||
static int button3_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#if MIN_BUTTON < 5 && MAX_BUTTON > 3
|
||||
static int button4_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#if MIN_BUTTON < 6 && MAX_BUTTON > 4
|
||||
static int button5_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#if MIN_BUTTON < 7 && MAX_BUTTON > 5
|
||||
static int button6_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#if MAX_BUTTON > 6
|
||||
static int button7_handler(int irq, FAR void *context);
|
||||
#endif
|
||||
#endif /* CONFIG_ARCH_IRQBUTTONS */
|
||||
|
||||
/****************************************************************************
|
||||
* Private Data
|
||||
****************************************************************************/
|
||||
|
||||
/* Button Names */
|
||||
|
||||
static const struct button_info_s g_buttoninfo[NUM_BUTTONS] =
|
||||
{
|
||||
#if MIN_BUTTON < 1
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME0,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button0_handler
|
||||
#endif
|
||||
},
|
||||
#endif
|
||||
#if MIN_BUTTON < 2 && MAX_BUTTON > 0
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME1,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button1_handler
|
||||
#endif
|
||||
},
|
||||
#endif
|
||||
#if MIN_BUTTON < 3 && MAX_BUTTON > 1
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME2,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button2_handler
|
||||
#endif
|
||||
},
|
||||
#endif
|
||||
#if MIN_BUTTON < 4 && MAX_BUTTON > 2
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME3,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button3_handler
|
||||
#endif
|
||||
},
|
||||
#endif
|
||||
#if MIN_BUTTON < 5 && MAX_BUTTON > 3
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME4,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button4_handler
|
||||
#endif
|
||||
},
|
||||
#endif
|
||||
#if MIN_BUTTON < 6 && MAX_BUTTON > 4
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME5,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button5_handler
|
||||
#endif
|
||||
},
|
||||
#endif
|
||||
#if MIN_BUTTON < 7 && MAX_BUTTON > 5
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME6,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button6_handler
|
||||
#endif
|
||||
},
|
||||
#endif
|
||||
#if MAX_BUTTON > 6
|
||||
{
|
||||
CONFIG_EXAMPLE_BUTTONS_NAME7,
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
button7_handler
|
||||
#endif
|
||||
}
|
||||
#endif
|
||||
};
|
||||
|
||||
/* Last sampled button set */
|
||||
|
||||
static uint8_t g_oldset;
|
||||
|
||||
/* Used to limit the number of button presses */
|
||||
|
||||
#ifdef CONFIG_NSH_BUILTIN_APPS
|
||||
static volatile long g_nbuttons;
|
||||
#endif
|
||||
|
||||
/****************************************************************************
|
||||
* Private Functions
|
||||
****************************************************************************/
|
||||
|
||||
static void show_buttons(uint8_t oldset, uint8_t newset)
|
||||
{
|
||||
uint8_t chgset = oldset ^ newset;
|
||||
int i;
|
||||
|
||||
/* Update the count of button presses shown */
|
||||
|
||||
#ifdef CONFIG_NSH_BUILTIN_APPS
|
||||
if ((chgset & newset) != 0)
|
||||
{
|
||||
g_nbuttons++;
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Show each button state change */
|
||||
|
||||
for (i = MIN_BUTTON; i <= MAX_BUTTON; i++)
|
||||
{
|
||||
uint8_t mask = (1 << i);
|
||||
if ((chgset & mask) != 0)
|
||||
{
|
||||
FAR const char *state;
|
||||
|
||||
/* Get the button state */
|
||||
|
||||
if ((newset & mask) != 0)
|
||||
{
|
||||
state = "depressed";
|
||||
}
|
||||
else
|
||||
{
|
||||
state = "released";
|
||||
}
|
||||
|
||||
/* Use lib_lowprintf() because we make be executing from an
|
||||
* interrupt handler.
|
||||
*/
|
||||
|
||||
lib_lowprintf(" %s %s\n", g_buttoninfo[BUTTON_INDEX(i)].name, state);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
static void button_handler(int id, int irq)
|
||||
{
|
||||
uint8_t newset = up_buttons();
|
||||
|
||||
lib_lowprintf("IRQ:%d Button %d:%s SET:%02x:\n",
|
||||
irq, id, g_buttoninfo[BUTTON_INDEX(id)].name, newset);
|
||||
show_buttons(g_oldset, newset);
|
||||
g_oldset = newset;
|
||||
}
|
||||
|
||||
#if MIN_BUTTON < 1
|
||||
static int button0_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(0, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if MIN_BUTTON < 2 && MAX_BUTTON > 0
|
||||
static int button1_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(1, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if MIN_BUTTON < 3 && MAX_BUTTON > 1
|
||||
static int button2_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(2, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if MIN_BUTTON < 4 && MAX_BUTTON > 2
|
||||
static int button3_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(3, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if MIN_BUTTON < 5 && MAX_BUTTON > 3
|
||||
static int button4_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(4, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if MIN_BUTTON < 6 && MAX_BUTTON > 4
|
||||
static int button5_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(5, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if MIN_BUTTON < 7 && MAX_BUTTON > 5
|
||||
static int button6_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(6, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
|
||||
#if MAX_BUTTON > 6
|
||||
static int button7_handler(int irq, FAR void *context)
|
||||
{
|
||||
button_handler(7, irq);
|
||||
return OK;
|
||||
}
|
||||
#endif
|
||||
#endif /* CONFIG_ARCH_IRQBUTTONS */
|
||||
|
||||
/****************************************************************************
|
||||
* Public Functions
|
||||
****************************************************************************/
|
||||
|
||||
/****************************************************************************
|
||||
* buttons_main
|
||||
****************************************************************************/
|
||||
|
||||
int buttons_main(int argc, char *argv[])
|
||||
{
|
||||
uint8_t newset;
|
||||
irqstate_t flags;
|
||||
int i;
|
||||
|
||||
/* If this example is configured as an NX add-on, then limit the number of
|
||||
* samples that we collect before returning. Otherwise, we never return
|
||||
*/
|
||||
|
||||
#ifdef CONFIG_NSH_BUILTIN_APPS
|
||||
long maxbuttons = 1;
|
||||
g_nbuttons = 0;
|
||||
if (argc > 1)
|
||||
{
|
||||
maxbuttons = strtol(argv[1], NULL, 10);
|
||||
}
|
||||
lib_lowprintf("maxbuttons: %d\n", maxbuttons);
|
||||
#endif
|
||||
|
||||
/* Initialize the button GPIOs */
|
||||
|
||||
up_buttoninit();
|
||||
|
||||
/* Register to recieve button interrupts */
|
||||
|
||||
#ifdef CONFIG_ARCH_IRQBUTTONS
|
||||
for (i = CONFIG_EXAMPLE_IRQBUTTONS_MIN; i <= CONFIG_EXAMPLE_IRQBUTTONS_MAX; i++)
|
||||
{
|
||||
xcpt_t oldhandler = up_irqbutton(i, g_buttoninfo[BUTTON_INDEX(i)].handler);
|
||||
|
||||
/* Use lib_lowprintf() for compatibility with interrrupt handler output. */
|
||||
|
||||
lib_lowprintf("Attached handler at %p to button %d [%s], oldhandler:%p\n",
|
||||
g_buttoninfo[BUTTON_INDEX(i)].handler, i,
|
||||
g_buttoninfo[BUTTON_INDEX(i)].name, oldhandler);
|
||||
|
||||
/* Some hardware multiplexes different GPIO button sources to the same
|
||||
* physical interrupt. If we register multiple such multiplexed button
|
||||
* interrupts, then the second registration will overwrite the first. In
|
||||
* this case, the first button interrupts may be aliased to the second
|
||||
* interrupt handler (or worse, could be lost).
|
||||
*/
|
||||
|
||||
if (oldhandler != NULL)
|
||||
{
|
||||
lib_lowprintf("WARNING: oldhandler:%p is not NULL! "
|
||||
"Button events may be lost or aliased!\n",
|
||||
oldhandler);
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
/* Poll button state */
|
||||
|
||||
g_oldset = up_buttons();
|
||||
#ifdef CONFIG_NSH_BUILTIN_APPS
|
||||
while (g_nbuttons < maxbuttons)
|
||||
#else
|
||||
for (;;)
|
||||
#endif
|
||||
{
|
||||
/* Get the set of pressed and release buttons. */
|
||||
|
||||
newset = up_buttons();
|
||||
|
||||
/* Any changes from the last sample? */
|
||||
|
||||
if (newset != g_oldset)
|
||||
{
|
||||
/* Disable interrupts so that output here will not collide with
|
||||
* output from an interrupt handler.
|
||||
*/
|
||||
|
||||
flags = irqsave();
|
||||
|
||||
/* Use lib_lowprintf() for compatibility with interrrupt handler
|
||||
* output.
|
||||
*/
|
||||
|
||||
lib_lowprintf("POLL SET:%02x:\n", newset);
|
||||
show_buttons(g_oldset, newset);
|
||||
g_oldset = newset;
|
||||
irqrestore(flags);
|
||||
}
|
||||
|
||||
/* Sleep a little... but not long. This will determine how fast we
|
||||
* poll for button changes.
|
||||
*/
|
||||
|
||||
usleep(150000); /* 150 Milliseconds */
|
||||
}
|
||||
|
||||
/* Un-register button handlers */
|
||||
|
||||
#if defined(CONFIG_ARCH_IRQBUTTONS) && defined(CONFIG_NSH_BUILTIN_APPS)
|
||||
for (i = CONFIG_EXAMPLE_IRQBUTTONS_MIN; i <= CONFIG_EXAMPLE_IRQBUTTONS_MAX; i++)
|
||||
{
|
||||
(void)up_irqbutton(i, NULL);
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user