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/****************************************************************************
* config/samd20-xplained/src/sam_nsh.c
*
* Copyright (C) 2014 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.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdio.h>
#include <syslog.h>
#include <nuttx/board.h>
#include "sam_config.h"
#include "samd20-xplained.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* Some configuration checks */
#ifdef CONFIG_SAMD20_XPLAINED_IOMODULE_EXT1
# ifndef SAMD_HAVE_SPI0
# error I/O1 module on EXT1 requires SERCOM SPI0
# undef CONFIG_SAMD20_XPLAINED_IOMODULE
# endif
# define SPI_PORTNO 0
#endif
#ifdef CONFIG_SAMD20_XPLAINED_IOMODULE_EXT2
# ifndef SAMD_HAVE_SPI1
# error I/O1 module on EXT2 requires SERCOM SPI1
# undef CONFIG_SAMD20_XPLAINED_IOMODULE
# endif
# define SPI_PORTNO 1
#endif
#ifdef CONFIG_SAMD20_XPLAINED_IOMODULE
/* Support for the SD card slot on the I/O1 module */
/* Verify NSH PORT and SLOT settings */
# define SAMD_MMCSDSLOTNO 0 /* There is only one slot */
# if defined(CONFIG_NSH_MMCSDSLOTNO) && CONFIG_NSH_MMCSDSLOTNO != SAMD_MMCSDSLOTNO
# error Only one MMC/SD slot: Slot 0 (CONFIG_NSH_MMCSDSLOTNO)
# undef CONFIG_NSH_MMCSDSLOTNO
# define CONFIG_NSH_MMCSDSLOTNO SAMD_MMCSDSLOTNO
# endif
# if defined(CONFIG_NSH_MMCSDSPIPORTNO) && CONFIG_NSH_MMCSDSPIPORTNO != SPI_PORTNO
# error CONFIG_NSH_MMCSDSPIPORTNO must have the same value as SPI_PORTNO
# undef CONFIG_NSH_MMCSDSPIPORTNO
# define CONFIG_NSH_MMCSDSPIPORTNO SPI_PORTNO
# endif
/* Default MMC/SD minor number */
# ifndef CONFIG_NSH_MMCSDMINOR
# define CONFIG_NSH_MMCSDMINOR 0
# endif
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_app_initialize
*
* Description:
* Perform architecture specific initialization
*
****************************************************************************/
int board_app_initialize(void)
{
#if defined(SAMD_HAVE_SPI0) && defined(CONFIG_SAMD20_XPLAINED_IOMODULE)
/* Initialize the SPI-based MMC/SD slot */
{
int ret = sam_sdinitialize(SPI_PORTNO, CONFIG_NSH_MMCSDMINOR);
if (ret < 0)
{
syslog(LOG_ERR, "ERROR: Failed to initialize MMC/SD slot: %d\n",
ret);
return ret;
}
}
#endif
return OK;
}
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