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/****************************************************************************
* configs/stm3210e-eval/src/stm32_pmbuttons.c
*
* Copyright (C) 2012, 2015 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
* Diego Sanchez <dsanchez@nx-engineering.com>
*
* 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 <arch/board/board.h>
#include <nuttx/config.h>
#include <nuttx/board.h>
#include <nuttx/power/pm.h>
#include <arch/irq.h>
#include <stdbool.h>
#include <debug.h>
#include "up_arch.h"
#include "nvic.h"
#include "stm32_pwr.h"
#include "stm32_pm.h"
#include "stm3210e-eval.h"
#if defined(CONFIG_PM) && defined(CONFIG_ARCH_IDLE_CUSTOM) && defined(CONFIG_PM_BUTTONS)
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Configuration ************************************************************/
#ifndef CONFIG_ARCH_BUTTONS
# error "CONFIG_ARCH_BUTTONS is not defined in the configuration"
#endif
#define BUTTON_MIN 0
#ifdef CONFIG_DJOYSTICK
# define BUTTON_MAX 2
# define BUTTON_MAX 7
#endif
#ifndef CONFIG_PM_BUTTONS_MIN
# define CONFIG_PM_BUTTONS_MIN BUTTON_MIN
#endif
#ifndef CONFIG_PM_BUTTONS_MAX
# define CONFIG_PM_BUTTONS_MAX BUTTON_MAX
#endif
#if CONFIG_PM_BUTTONS_MIN > CONFIG_PM_BUTTONS_MAX
# error "CONFIG_PM_BUTTONS_MIN > CONFIG_PM_BUTTONS_MAX"
#endif
#if CONFIG_PM_BUTTONS_MAX > BUTTON_MAX
# error "CONFIG_PM_BUTTONS_MAX > BUTTON_MAX"
#endif
#ifndef CONFIG_ARCH_IRQBUTTONS
# warning "CONFIG_ARCH_IRQBUTTONS is not defined in the configuration"
#endif
#ifndef CONFIG_PM_IRQBUTTONS_MIN
# define CONFIG_PM_IRQBUTTONS_MIN CONFIG_PM_BUTTONS_MIN
#endif
#ifndef CONFIG_PM_IRQBUTTONS_MAX
# define CONFIG_PM_IRQBUTTONS_MAX CONFIG_PM_BUTTONS_MAX
#endif
#if CONFIG_PM_IRQBUTTONS_MIN > CONFIG_PM_IRQBUTTONS_MAX
# error "CONFIG_PM_IRQBUTTONS_MIN > CONFIG_PM_IRQBUTTONS_MAX"
#endif
#if CONFIG_PM_IRQBUTTONS_MAX > 7
# error "CONFIG_PM_IRQBUTTONS_MAX > 7"
#endif
#ifndef CONFIG_PM_BUTTON_ACTIVITY
# define CONFIG_PM_BUTTON_ACTIVITY 10
#endif
/* Miscellaneous Definitions ************************************************/
#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_PM_BUTTONS_MIN, CONFIG_PM_IRQBUTTONS_MIN)
#define MAX_BUTTON MAX(CONFIG_PM_BUTTONS_MAX, CONFIG_PM_IRQBUTTONS_MAX)
#define NUM_PMBUTTONS (MAX_BUTTON - MIN_BUTTON + 1)
#define BUTTON_INDEX(b) ((b)-MIN_BUTTON)
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Function Prototypes
****************************************************************************/
#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 interrupt handlers */
#ifdef CONFIG_ARCH_IRQBUTTONS
static const xcpt_t g_buttonhandlers[NUM_PMBUTTONS] =
{
#if MIN_BUTTON < 1
button0_handler,
#endif
#if MIN_BUTTON < 2 && MAX_BUTTON > 0
button1_handler,
#endif
#if MIN_BUTTON < 3 && MAX_BUTTON > 1
button2_handler,
#endif
#if MIN_BUTTON < 4 && MAX_BUTTON > 2
button3_handler,
#endif
#if MIN_BUTTON < 5 && MAX_BUTTON > 3
button4_handler,
#endif
#if MIN_BUTTON < 6 && MAX_BUTTON > 4
button5_handler,
#endif
#if MIN_BUTTON < 7 && MAX_BUTTON > 5
button6_handler,
#endif
#if MAX_BUTTON > 6
button7_handler,
#endif
};
#endif /* CONFIG_ARCH_IRQBUTTONS */
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: button_handler
*
* Description:
* Handle a button wake-up interrupt
*
****************************************************************************/
#ifdef CONFIG_ARCH_IRQBUTTONS
static void button_handler(int id, int irq)
{
/* At this point the MCU should have already awakened. The state
* change will be handled in the IDLE loop when the system is re-awakened
* The button interrupt handler should be totally ignorant of the PM
* activities and should report button activity as if nothing
* special happened.
*/
pm_activity(CONFIG_PM_BUTTON_ACTIVITY);
}
#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
****************************************************************************/
/****************************************************************************
* Name: stm32_pmbuttons
*
* Description:
* Configure all the buttons of the STM3210e-eval board as EXTI,
* so any button is able to wakeup the MCU from the PM_STANDBY mode
*
****************************************************************************/
void stm32_pmbuttons(void)
{
/* Initialize the button GPIOs */
board_button_initialize();
#ifdef CONFIG_ARCH_IRQBUTTONS
int i;
for (i = CONFIG_PM_IRQBUTTONS_MIN; i <= CONFIG_PM_IRQBUTTONS_MAX; i++)
{
xcpt_t oldhandler = board_button_irq(i, g_buttonhandlers[BUTTON_INDEX(i)]);
if (oldhandler != NULL)
{
lowsyslog(LOG_WARNING, "WARNING: oldhandler:%p is not NULL! "
"Button events may be lost or aliased!\n",
oldhandler);
}
}
#endif
}
#endif /* defined(CONFIG_PM) && defined(CONFIG_ARCH_IDLE_CUSTOM) && defined(CONFIG_PM_BUTTONS) */
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