path: root/nuttx/configs/vsn/src/sdcard.c

/****************************************************************************
 * config/vsn/src/sdcard.c
 * arch/arm/src/board/sdcard.c
 *
 *   Copyright (C) 2011 Uros Platise. All rights reserved.
 *   Copyright (C) 2009 Gregory Nutt. All rights reserved.
 *
 *   Authors: Uros Platise <uros.platise@isotel.eu>
 *            Gregory Nutt <spudmonkey@racsa.co.cr>
 *
 * 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.
 *
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdbool.h>
#include <stdio.h>
#include <debug.h>
#include <errno.h>

#ifdef CONFIG_STM32_SDIO
#  include <nuttx/sdio.h>
#  include <nuttx/mmcsd.h>
#endif

#include "vsn.h"


#define CONFIG_EXAMPLES_NSH_HAVEMMCSD  1
#if defined(CONFIG_EXAMPLES_NSH_MMCSDSLOTNO) && CONFIG_EXAMPLES_NSH_MMCSDSLOTNO != 0
#  error "Only one MMC/SD slot"
#  undef CONFIG_EXAMPLES_NSH_MMCSDSLOTNO
#endif
#ifndef CONFIG_EXAMPLES_NSH_MMCSDSLOTNO
#  define CONFIG_EXAMPLES_NSH_MMCSDSLOTNO 0
#endif

/* Can't support MMC/SD features if mountpoints are disabled or if SDIO support
 * is not enabled.
 */

#if defined(CONFIG_DISABLE_MOUNTPOINT) || !defined(CONFIG_STM32_SDIO)
#  undef CONFIG_EXAMPLES_NSH_HAVEMMCSD
#endif

#ifndef CONFIG_EXAMPLES_NSH_MMCSDMINOR
#  define CONFIG_EXAMPLES_NSH_MMCSDMINOR 0
#endif



int up_sdcard(void)
{
  /* Mount the SDIO-based MMC/SD block driver */

#ifdef CONFIG_EXAMPLES_NSH_HAVEMMCSD

  FAR struct sdio_dev_s *sdio;
  int ret;

  /* First, get an instance of the SDIO interface */

  sdio = sdio_initialize(CONFIG_EXAMPLES_NSH_MMCSDSLOTNO);
  if (!sdio)
    {
      message("SDIO: Failed to initialize slot %d\n", CONFIG_EXAMPLES_NSH_MMCSDSLOTNO);
      return -ENODEV;
    }
  message("SDIO: Initialized slot %d\n", CONFIG_EXAMPLES_NSH_MMCSDSLOTNO);

  /* Now bind the SPI interface to the MMC/SD driver */

  ret = mmcsd_slotinitialize(CONFIG_EXAMPLES_NSH_MMCSDMINOR, sdio);
  if (ret != OK)
    {
      message("SDIO: Failed to bind to the MMC/SD driver: %d\n", ret);
      return ret;
    }
  message("SDIO: Successfully bound to the MMC/SD driver\n");
  
  /* Then let's guess and say that there is a card in the slot.  I need to check to
   * see if the VSN board supports a GPIO to detect if there is a card in
   * the slot.
   */
  sdio_mediachange(sdio, true);
  
#endif
  return OK;
}