text: /****************************************************************************
   * configs/sama5d3x-ek/src/sam_userleds.c
   *
   *   Copyright (C) 2013-2015 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.
   *
   ****************************************************************************/
  /* There are two LEDs on the SAMA5D3 series-CM board that can be controlled
   * by software.  A  blue LED is controlled via PIO pins.  A red LED normally
   * provides an indication that power is supplied to the board but can also
   * be controlled via software.
   *
   *   PE25.  This blue LED is pulled high and is illuminated by pulling PE25
   *   low.
   *
   *   PE24.  The red LED is also pulled high but is driven by a transistor so
   *   that it is illuminated when power is applied even if PE24 is not
   *   configured as an output.  If PE24 is configured as an output, then the
   *   LCD is illuminated by a low output.
   */
  
  /****************************************************************************
   * 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 "sama5d3x-ek.h"
  
  #ifndef CONFIG_ARCH_LEDS
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: board_userled_initialize
   ****************************************************************************/
  
  void board_userled_initialize(void)
  {
    /* Configure LED PIOs for output */
  
    sam_configpio(PIO_BLUE);
  #ifndef CONFIG_SAMA5D3xEK_NOREDLED
    sam_configpio(PIO_RED);
  #endif
  }
  
  /****************************************************************************
   * Name: board_userled
   ****************************************************************************/
  
  void board_userled(int led, bool ledon)
  {
    uint32_t ledcfg;
  
    if (led == BOARD_BLUE)
      {
        /* Low illuminates */
  
        ledcfg = PIO_BLUE;
        ledon  = !ledon;
      }
  #ifndef CONFIG_SAMA5D3xEK_NOREDLED
    else if (led == BOARD_RED)
      {
        /* High illuminates */
  
        ledcfg = PIO_RED;
      }
  #endif
    else
      {
        return;
      }
  
    sam_piowrite(ledcfg, ledon);
  }
  
  /****************************************************************************
   * Name: board_userled_all
   ****************************************************************************/
  
  void board_userled_all(uint8_t ledset)
  {
    bool ledon;
  
    /* Low illuminates */
  
    ledon = ((ledset & BOARD_BLUE_BIT) == 0);
    sam_piowrite(PIO_BLUE, ledon);
  
  #ifndef CONFIG_SAMA5D3xEK_NOREDLED
    /* High illuminates */
  
    ledon = ((ledset & BOARD_RED_BIT) != 0);
    sam_piowrite(PIO_RED, ledon);
  #endif
  }
  
  #endif /* !CONFIG_ARCH_LEDS */
  