/****************************************************************************
 * boards/arm/sam34/sam4s-xplained/src/sam_autoleds.c
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

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

#include <nuttx/config.h>

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

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

#include "chip.h"
#include "sam_gpio.h"
#include "sam4s-xplained.h"

#ifdef CONFIG_ARCH_LEDS

/* If CONFIG_ARCH_LEDs is defined, then NuttX will control the two LEDs on
 * board the SAM4S Xplained.  The following definitions describe how NuttX
 * controls the LEDs:
 *
 *   SYMBOL                Meaning                     LED state
 *                                                   D9     D10
 *   -------------------  -----------------------  -------- --------
 *   LED_STARTED          NuttX has been started     OFF      OFF
 *   LED_HEAPALLOCATE     Heap has been allocated    OFF      OFF
 *   LED_IRQSENABLED      Interrupts enabled         OFF      OFF
 *   LED_STACKCREATED     Idle stack created         ON       OFF
 *   LED_INIRQ            In an interrupt              No change
 *   LED_SIGNAL           In a signal handler          No change
 *   LED_ASSERTION        An assertion failed          No change
 *   LED_PANIC            The system has crashed     OFF      Blinking
 *   LED_IDLE             MCU is is sleep mode         Not used
 */

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

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

void board_autoled_initialize(void)
{
  /* Configure LED1-2 GPIOs for output */

  sam_configgpio(GPIO_D9);
  sam_configgpio(GPIO_D10);
}

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

void board_autoled_on(int led)
{
  bool led1on = false;
  bool led2on = false;

  switch (led)
    {
      case 0:  /* LED_STARTED, LED_HEAPALLOCATE, LED_IRQSENABLED */
        break;

      case 1:  /* LED_STACKCREATED */
        led1on = true;
        break;

      default:
      case 2:  /* LED_INIRQ, LED_SIGNAL, LED_ASSERTION */
        return;

      case 3:  /* LED_PANIC */
        led2on = true;
        break;
    }

  sam_gpiowrite(GPIO_D9, led1on);
  sam_gpiowrite(GPIO_D10, led2on);
}

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

void board_autoled_off(int led)
{
  if (led != 2)
    {
      sam_gpiowrite(GPIO_D9, false);
      sam_gpiowrite(GPIO_D10, false);
    }
}

#endif /* CONFIG_ARCH_LEDS */
