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/****************************************************************************
* configs/detron/src/up_buttons.c
*
* Copyright (C) 2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* 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 <stdint.h>
#include <nuttx/irq.h>
#include <arch/irq.h>
#include <arch/board/board.h>
#include "lpc17_internal.h"
#include "detron_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
static xcpt_t g_irq_pin_panel_pulse_up;
static xcpt_t g_irq_pin_panel_pulse_down;
static xcpt_t g_irq_pin_panel_center;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_buttoninit
****************************************************************************/
void up_buttoninit(void)
{
lpc17_configgpio(pin_panel_pulse_up);
lpc17_configgpio(pin_panel_pulse_down);
lpc17_configgpio(pin_panel_center);
}
/****************************************************************************
* Name: up_buttons
****************************************************************************/
uint8_t up_buttons(void)
{
uint8_t retval;
retval = lpc17_gpioread(pin_panel_pulse_up) ? 0 : pin_panel_pulse_up;
retval |= lpc17_gpioread(pin_panel_pulse_down) ? 0 : pin_panel_pulse_down;
retval |= lpc17_gpioread(pin_panel_center) ? 0 : pin_panel_center;
return retval;
}
/****************************************************************************
* Name: up_irq_pin_panel_pulse_up
****************************************************************************/
xcpt_t up_irq_pin_panel_pulse_up(xcpt_t irqhandler)
{
xcpt_t oldhandler;
irqstate_t flags;
/* Get the old button interrupt handler and save the new one */
oldhandler = g_irq_pin_panel_pulse_up;
g_irq_pin_panel_pulse_up = irqhandler;
/* Disable interrupts until we are done */
flags = irqsave();
/* Configure the interrupt */
(void)irq_attach(IRQ_pin_panel_pulse_up, irqhandler);
up_enable_irq(IRQ_pin_panel_pulse_up);
irqrestore(flags);
return oldhandler;
}
/****************************************************************************
* Name: up_irq_pin_panel_pulse_down
* ****************************************************************************/
xcpt_t up_irq_pin_panel_pulse_down(xcpt_t irqhandler)
{
xcpt_t oldhandler;
irqstate_t flags;
/* Get the old button interrupt handler and save the new one */
oldhandler = g_irq_pin_panel_pulse_down;
g_irq_pin_panel_pulse_down = irqhandler;
/* Disable interrupts until we are done */
flags = irqsave();
/* Configure the interrupt */
(void)irq_attach(IRQ_pin_panel_pulse_down, irqhandler);
up_enable_irq(IRQ_pin_panel_pulse_down);
irqrestore(flags);
return oldhandler;
}
/****************************************************************************
* Name: up_irq_pin_panel_center
* ****************************************************************************/
xcpt_t up_irq_pin_panel_center(xcpt_t irqhandler)
{
xcpt_t oldhandler;
irqstate_t flags;
/* Get the old button interrupt handler and save the new one */
oldhandler = g_irq_pin_panel_center;
g_irq_pin_panel_center = irqhandler;
/* Disable interrupts until we are done */
flags = irqsave();
/* Configure the interrupt */
(void)irq_attach(IRQ_pin_panel_center, irqhandler);
up_enable_irq(IRQ_pin_panel_center);
irqrestore(flags);
return oldhandler;
}
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