/****************************************************************************
 * configs/samd20-xplained/src/sam_userleds.c
 *
 *   Copyright (C) 2014 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.
 *
 ****************************************************************************/
/* There are three LEDs on board the SAMD20 Xplained Pro board:  The EDBG
 * controls two of the LEDs, a power LED and a status LED.  There is only
 * one user controllable LED, a yellow LED labeled STATUS near the SAMD20 USB
 * connector.
 *
 * This LED is controlled by PA14 and the LED can be activated by driving PA14
 * to GND.
 *
 * When CONFIG_ARCH_LEDS is defined in the NuttX configuration, NuttX will
 * control the LED.  Otherwise, the LED can be controlled from user applications
 * using the logic in this file.
 */

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

#include <nuttx/config.h>

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

#include <arch/board/board.h>

#include "sam_port.h"
#include "samd20-xplained.h"

#ifndef CONFIG_ARCH_LEDS

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
 * with CONFIG_DEBUG_VERBOSE too)
 */

#ifdef CONFIG_DEBUG_LEDS
#  define leddbg  lldbg
#  define ledvdbg llvdbg
#else
#  define leddbg(x...)
#  define ledvdbg(x...)
#endif

/****************************************************************************
 * Private Data
 ****************************************************************************/

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

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

/****************************************************************************
 * Name: sam_ledinit
 *
 * Description:
 *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
 *   LEDs.  If CONFIG_ARCH_LEDS is not defined, then the sam_ledinit() is
 *   available to initialize the LED from user application logic.
 *
 ****************************************************************************/

void sam_ledinit(void)
{
  (void)sam_configport(PORT_STATUS_LED);
}

/****************************************************************************
 * Name: sam_setled
 *
 * Description:
 *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
 *  LEDs.  If CONFIG_ARCH_LEDS is not defined, then the sam_setled() is
 *  available to control the LED from user application logic.
 *
 *****************************************************************************/

void sam_setled(int led, bool ledon)
{
  if (led == BOARD_STATUS_LED)
    {
      sam_portwrite(PORT_STATUS_LED, !ledon);
    }
}

/****************************************************************************
 * Name: sam_setled
 *
 * Description:
 *   If CONFIG_ARCH_LEDS is defined, then NuttX will control the on-board
 *  LEDs.  If CONFIG_ARCH_LEDS is not defined, then the sam_setleds() is
 *  available to control the LED from user application logic.  NOTE:  since
 *  there is only a single LED on-board, this is function is not very useful.
 *
 *****************************************************************************/

void sam_setleds(uint8_t ledset)
{
  sam_setled(BOARD_STATUS_LED, (ledset & BOARD_STATUS_LED_BIT) != 0);
}

#endif /* !CONFIG_ARCH_LEDS */
