nuttx/configs/sama5d2-xult/src/sam_userleds.c

/****************************************************************************
 * configs/sama5d2-xult/src/sam_userleds.c
 *
 *   Copyright (C) 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 is an RGB LED on board the SAMA5D2-XULT.  The RED component is
 * driven by the SDHC_CD pin (PA13) and so will not be used.  The LEDs are
 * provided VDD_LED and so bringing the LED low will will illuminated the
 * LED.
 *
 *   ------------------------------ ------------------- ---------------------
 *   SAMA5D2 PIO                    SIGNAL              USAGE
 *   ------------------------------ ------------------- ---------------------
 *   PA13                           SDHC_CD_PA13        Red LED
 *   PB5                            LED_GREEN_PB5       Green LED
 *   PB0                            LED_BLUE_PB0        Blue LED
 *   ------------------------------ ------------------- ---------------------
 */

/****************************************************************************
 * 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 "sama5d2-xult.h"

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

/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG_FEATURES
 * with CONFIG_DEBUG_INFO too)
 */

#ifdef CONFIG_DEBUG_LEDS
#  define lederr  llerr
#  define ledinfo llinfo
#else
#  define lederr(x...)
#  define ledinfo(x...)
#endif

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

/****************************************************************************
 * Name: board_userled_initialize
 ****************************************************************************/

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

#ifndef CONFIG_ARCH_LEDS
  sam_configpio(PIO_LED_GREEN);
#endif
  sam_configpio(PIO_LED_BLUE);
}

/****************************************************************************
 * Name: board_userled
 ****************************************************************************/

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

#ifndef CONFIG_ARCH_LEDS
  if (led == BOARD_GREEN)
    {
      ledcfg = PIO_LED_GREEN;
    }
  else
#endif
  if (led == BOARD_BLUE)
    {
      ledcfg = PIO_LED_BLUE;
    }
  else
    {
      return;
    }

  /* Low illuminates */

  sam_piowrite(ledcfg, !ledon);
}

/****************************************************************************
 * Name: board_userled_all
 ****************************************************************************/

void board_userled_all(uint8_t ledset)
{
  bool ledon;

#ifndef CONFIG_ARCH_LEDS
  /* Low illuminates */

  ledon = ((ledset & BOARD_GREEN_BIT) == 0);
  sam_piowrite(PIO_LED_GREEN, ledon);
#endif

  /* Low illuminates */

  ledon = ((ledset &BOARD_BLUE_BIT) != 0);
  sam_piowrite(PIO_LED_BLUE, ledon);
}