nuttx/boards/arm/lpc43xx/lpc4370-link2/src/lpc43_autoleds.c

/****************************************************************************
 * boards/arm/lpc43xx/lpc4370-link2/src/lpc43_autoleds.c
 *
 *   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.
 *
 ****************************************************************************/

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdint.h>
#include <stdbool.h>
#include <debug.h>

#include <nuttx/board.h>
#include <arch/board/board.h>

#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"

#include "lpc4370-link2.h"

#ifdef CONFIG_ARCH_LEDS

/****************************************************************************
 * Private Functions
 ****************************************************************************/

/****************************************************************************
 * Name: led_dumppins
 ****************************************************************************/

#ifdef LED_VERBOSE
static void led_dumppins(FAR const char *msg)
{
  lpc43_pin_dump(PINCONFIG_LED, msg);
  lpc43_gpio_dump(GPIO_LED, msg);
}
#else
#  define led_dumppins(m)
#endif

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: board_autoled_initialize
 ****************************************************************************/

void board_autoled_initialize(void)
{
  /* Configure LED pin as a GPIO outputs */

  led_dumppins("board_autoled_initialize() Entry)");

  /* Configure LED pin as a GPIO, then configure GPIO as an outputs */

  lpc43_pin_config(PINCONFIG_LED);
  lpc43_gpio_config(GPIO_LED);

  led_dumppins("board_autoled_initialize() Exit");
}

/****************************************************************************
 * Name: board_autoled_on
 ****************************************************************************/

void board_autoled_on(int led)
{
  bool ledon = true;   /* OFF. Low illuminates */

  switch (led)
    {
      default:
      case 0:
        break;          /* LED OFF until state 1 */

      case 2:
        return;         /* LED no change */

      case 1:
      case 3:
        ledon = false;  /* LED ON.  Low illuminates */
        break;
    }

  /* Turn LED on or off, depending on state */

  lpc43_gpio_write(GPIO_LED, ledon);
}

/****************************************************************************
 * Name: board_autoled_off
 ****************************************************************************/

void board_autoled_off(int led)
{
  switch (led)
    {
      default:
      case 0:
      case 1:
      case 3:
        break;  /* LED OFF */

      case 2:
        return; /* LED no change */
    }

  /* LED OFF, Low illuminates */

  lpc43_gpio_write(GPIO_LED, true);
}

#endif /* CONFIG_ARCH_LEDS */