/****************************************************************************
 * configs/sama5d4-ek/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 3 LEDs on the SAMA5D4-EK:
 *
 * ------------------------------ ------------------- -------------------------
 * SAMA5D4 PIO                    SIGNAL              USAGE
 * ------------------------------ ------------------- -------------------------
 * PE28/NWAIT/RTS4/A19            1Wire_PE28          1-WIRE ROM, LCD, D8 (green)
 * PE8/A8/TCLK3/PWML3             LED_USER_PE8        LED_USER (D10)
 * PE9/A9/TIOA2                   LED_POWER_PE9       LED_POWER (D9, Red)
 * ------------------------------ ------------------- -------------------------
 *
 * - D8: D8 is shared with other functions and cannot be used if the 1-Wire ROM
 *   is used.  I am not sure of the LCD function, but the LED may not be available
 *   if the LCD is used either.  We will avoid using D8 just for simplicity.
 * - D10:  Nothing special here.  A low output illuminates.
 * - D9: The Power ON LED.  Connects to the via an IRLML2502 MOSFET.  This LED will
 *   be on when power is applied but otherwise, I think it works like D10.
 */

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

#include <nuttx/config.h>

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

#include <arch/board/board.h>

#include "sam_pio.h"
#include "sama5d4-ek.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

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

/****************************************************************************
 * Name: sam_ledinit
 ****************************************************************************/

void sam_ledinit(void)
{
  /* Configure LED PIOs for output */

  sam_configpio(PIO_LED_USER);
  sam_configpio(PIO_LED_POWER);
}

/****************************************************************************
 * Name: sam_setled
 ****************************************************************************/

void sam_setled(int led, bool ledon)
{
  uint32_t ledcfg;

  if (led == BOARD_BLUE)
    {
      /* Low illuminates */

      ledcfg = PIO_LED_USER;
      ledon  = !ledon;
    }
  else if (led == BOARD_RED)
    {
      /* High illuminates */

      ledcfg = PIO_LED_POWER;
    }
  else
    {
      return;
    }

  sam_piowrite(ledcfg, ledon);
}

/****************************************************************************
 * Name: sam_setleds
 ****************************************************************************/

void sam_setleds(uint8_t ledset)
{
  bool ledon;

  /* Low illuminates */

  ledon = ((ledset & BOARD_BLUE_BIT) == 0);
  sam_piowrite(PIO_LED_USER, ledon);

  /* High illuminates */

  ledon = ((ledset & BOARD_RED_BIT) != 0);
  sam_piowrite(PIO_LED_POWER, ledon);
}

#endif /* !CONFIG_ARCH_LEDS */
