/****************************************************************************
 * boards/arm/xmc4/xmc4700-relax/src/xmc4_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.
 *
 ****************************************************************************/

/* The XMC4700 Relax Lite v1 board has two LEDs:
 *
 * LED1 P5.9 High output illuminates
 * LED2 P5.8 High output illuminates
 *
 * These LEDs are not used by the board port unless CONFIG_ARCH_LEDS is
 * defined.  In that case, the usage by the board port is defined in
 * include/board.h and src/sam_autoleds.c. The LEDs are used to encode
 * OS-related events as follows:
 *
 *   SYMBOL              Meaning                  LED state
 *                                               LED1   LED2
 *   ------------------ ------------------------ ------ ------
 *   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   N/C  Blinking
 *   LED_IDLE           MCU is is sleep mode      Not used
 */

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

#include <nuttx/config.h>

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

#include "xmc4_gpio.h"
#include "xmc4700-relax.h"

#ifdef CONFIG_ARCH_LEDS

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

static void board_led1_on(int led)
{
  bool ledon = false;

  switch (led)
    {
      case 0:           /* LED1=OFF */
        break;

      case 1:           /* LED1=ON */
        ledon  = true;
        break;

      case 2:           /* LED1=N/C */
      case 3:           /* LED1=N/C */
      default:
        return;
    }

  xmc4_gpio_write(GPIO_LED1, ledon);
}

static void board_led2_on(int led)
{
  bool ledon = false;

  switch (led)
    {
      case 0:           /* LED2=OFF */
      case 1:           /* LED2=OFF */
        break;

      case 3:           /* LED2=ON */
        ledon  = true;
        break;

      case 2:           /* LED2=N/C */
      default:
        return;
    }

  xmc4_gpio_write(GPIO_LED2, ledon);
}

static void board_led1_off(int led)
{
  switch (led)
    {
      case 0:           /* LED1=OFF */
      case 1:           /* LED1=OFF */
        break;

      case 2:           /* LED1=N/C */
      case 3:           /* LED1=N/C */
      default:
        return;
    }

  xmc4_gpio_write(GPIO_LED1, false);
}

static void board_led2_off(int led)
{
  switch (led)
    {
      case 0:           /* LED2=OFF */
      case 1:           /* LED2=OFF */
      case 3:           /* LED2=OFF */
        break;

      case 2:           /* LED2=N/C */
      default:
        return;
    }

    xmc4_gpio_write(GPIO_LED2, false);
}

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

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

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

  xmc4_gpio_config(GPIO_LED1);
  xmc4_gpio_config(GPIO_LED2);
}

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

void board_autoled_on(int led)
{
  board_led1_on(led);
  board_led2_on(led);
}

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

void board_autoled_off(int led)
{
  board_led1_off(led);
  board_led2_off(led);
}

#endif /* CONFIG_ARCH_LEDS */
