sdhc.c
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/****************************************************************************
*
* Copyright (C) 2016-2018 Gregory Nutt. All rights reserved.
* Authors: Gregory Nutt <gnutt@nuttx.org>
* David Sidrane <david_s5@nscdg.com>
*
* 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.
*
****************************************************************************/
/* A micro Secure Digital (SD) card slot is available on the board connected to
* the SD Host Controller (USDHC1) signals of the MCU. This slot will accept
* micro format SD memory cards.
*
* ------------ ------------- --------
* SD Card Slot Board Signal IMXRT Pin
* ------------ ------------- --------
* DAT0 USDHC1_DATA0 GPIO_SD_B0_02
* DAT1 USDHC1_DATA1 GPIO_SD_B0_03
* DAT2 USDHC1_DATA2 GPIO_SD_B0_04
* CD/DAT3 USDHC1_DATA3 GPIO_SD_B0_05
* CMD USDHC1_CMD GPIO_SD_B0_00
* CLK USDHC1_CLK GPIO_SD_B0_01
* CD USDHC1_CD GPIO_B1_12
* ------------ ------------- --------
*
* There are no Write Protect available to the IMXRT.
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <px4_platform_common/px4_config.h>
#include <px4_log.h>
#include <stdbool.h>
#include <stdio.h>
#include <debug.h>
#include <errno.h>
#include <debug.h>
#include <nuttx/sdio.h>
#include <nuttx/mmcsd.h>
#include "chip.h"
#include "imxrt_usdhc.h"
#include "board_config.h"
#ifdef CONFIG_IMXRT_USDHC
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Private Types
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: fmurt1062_usdhc_initialize
*
* Description:
* Inititialize the SDHC SD card slot
*
****************************************************************************/
int fmurt1062_usdhc_initialize(void)
{
int ret;
/* Mount the SDHC-based MMC/SD block driver */
/* First, get an instance of the SDHC interface */
struct sdio_dev_s *sdhc = imxrt_usdhc_initialize(CONFIG_NSH_MMCSDSLOTNO);
if (!sdhc) {
PX4_ERR("ERROR: Failed to initialize SDHC slot %d\n", CONFIG_NSH_MMCSDSLOTNO);
return -ENODEV;
}
/* Now bind the SDHC interface to the MMC/SD driver */
ret = mmcsd_slotinitialize(CONFIG_NSH_MMCSDMINOR, sdhc);
if (ret != OK) {
PX4_ERR("ERROR: Failed to bind SDHC to the MMC/SD driver: %d\n", ret);
return ret;
}
syslog(LOG_INFO, "Successfully bound SDHC to the MMC/SD driver\n");
return OK;
}
#endif /* CONFIG_IMXRT_USDHC */