126 lines
4.3 KiB
C
126 lines
4.3 KiB
C
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/****************************************************************************
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* config/samd21-xplained/src/sam_nsh.c
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*
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* Copyright (C) 2014 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdio.h>
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#include <syslog.h>
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#include <nuttx/board.h>
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#include "sam_config.h"
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#include "samd21-xplained.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Some configuration checks */
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#ifdef CONFIG_SAMD21_XPLAINED_IOMODULE_EXT1
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# ifndef SAMDL_HAVE_SPI0
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# error I/O1 module on EXT1 requires SERCOM SPI0
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# undef CONFIG_SAMD21_XPLAINED_IOMODULE
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# endif
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# define SPI_PORTNO 0
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#endif
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#ifdef CONFIG_SAMD21_XPLAINED_IOMODULE_EXT2
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# ifndef SAMDL_HAVE_SPI1
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# error I/O1 module on EXT2 requires SERCOM SPI1
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# undef CONFIG_SAMD21_XPLAINED_IOMODULE
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# endif
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# define SPI_PORTNO 1
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#endif
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#ifdef CONFIG_SAMD21_XPLAINED_IOMODULE
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/* Support for the SD card slot on the I/O1 module */
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/* Verify NSH PORT and SLOT settings */
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# define SAMDL_MMCSDSLOTNO 0 /* There is only one slot */
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# if defined(CONFIG_NSH_MMCSDSLOTNO) && CONFIG_NSH_MMCSDSLOTNO != SAMDL_MMCSDSLOTNO
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# error Only one MMC/SD slot: Slot 0 (CONFIG_NSH_MMCSDSLOTNO)
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# undef CONFIG_NSH_MMCSDSLOTNO
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# define CONFIG_NSH_MMCSDSLOTNO SAMDL_MMCSDSLOTNO
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# endif
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# if defined(CONFIG_NSH_MMCSDSPIPORTNO) && CONFIG_NSH_MMCSDSPIPORTNO != SPI_PORTNO
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# error CONFIG_NSH_MMCSDSPIPORTNO must have the same value as SPI_PORTNO
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# undef CONFIG_NSH_MMCSDSPIPORTNO
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# define CONFIG_NSH_MMCSDSPIPORTNO SPI_PORTNO
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# endif
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/* Default MMC/SD minor number */
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# ifndef CONFIG_NSH_MMCSDMINOR
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# define CONFIG_NSH_MMCSDMINOR 0
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# endif
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_app_initialize
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*
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* Description:
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* Perform architecture specific initialization
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*
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****************************************************************************/
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int board_app_initialize(void)
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{
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#if defined(SAMDL_HAVE_SPI0) && defined(CONFIG_SAMD21_XPLAINED_IOMODULE)
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/* Initialize the SPI-based MMC/SD slot */
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{
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int ret = sam_sdinitialize(SPI_PORTNO, CONFIG_NSH_MMCSDMINOR);
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if (ret < 0)
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{
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syslog(LOG_ERR, "ERROR: Failed to initialize MMC/SD slot: %d\n",
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ret);
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return ret;
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}
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}
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#endif
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return OK;
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}
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