115 lines
3.5 KiB
C
115 lines
3.5 KiB
C
/****************************************************************************
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* boards/arm/stm32/shenzhou/src/stm32_mmcsd.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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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 <debug.h>
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#include <errno.h>
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#include <nuttx/spi/spi.h>
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#include <nuttx/mmcsd.h>
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#include "stm32_spi.h"
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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/* SPI1 connects to the SD CARD (and to the SPI FLASH) */
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#define HAVE_MMCSD 1 /* Assume that we have SD support */
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#define STM32_MMCSDSPIPORTNO 1 /* Port is SPI1 */
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#define STM32_MMCSDSLOTNO 0 /* There is only one slot */
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#ifndef CONFIG_STM32_SPI1
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# undef HAVE_MMCSD
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#endif
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/* Can't support MMC/SD features if MMC/SD driver support is not selected */
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#ifndef CONFIG_MMCSD
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# undef HAVE_MMCSD
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#endif
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/* Can't support MMC/SD features if mountpoints are disabled */
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#ifdef CONFIG_DISABLE_MOUNTPOINT
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# undef HAVE_MMCSD
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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: stm32_sdinitialize
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*
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* Description:
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* Initialize the SPI-based SD card. Requires CONFIG_DISABLE_MOUNTPOINT=n
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* and CONFIG_STM32_SPI1=y
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*
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****************************************************************************/
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int stm32_sdinitialize(int minor)
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{
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#ifdef HAVE_MMCSD
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FAR struct spi_dev_s *spi;
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int ret;
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/* Get the SPI port */
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finfo("Initializing SPI port %d\n", STM32_MMCSDSPIPORTNO);
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spi = stm32_spibus_initialize(STM32_MMCSDSPIPORTNO);
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if (!spi)
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{
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ferr("ERROR: Failed to initialize SPI port %d\n",
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STM32_MMCSDSPIPORTNO);
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return -ENODEV;
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}
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finfo("Successfully initialized SPI port %d\n", STM32_MMCSDSPIPORTNO);
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/* Bind the SPI port to the slot */
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finfo("Binding SPI port %d to MMC/SD slot %d\n",
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STM32_MMCSDSPIPORTNO, STM32_MMCSDSLOTNO);
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ret = mmcsd_spislotinitialize(minor, STM32_MMCSDSLOTNO, spi);
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if (ret < 0)
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{
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ferr("ERROR: Failed to bind SPI port %d to MMC/SD slot %d: %d\n",
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STM32_MMCSDSPIPORTNO, STM32_MMCSDSLOTNO, ret);
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return ret;
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}
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finfo("Successfully bound SPI port %d to MMC/SD slot %d\n",
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STM32_MMCSDSPIPORTNO, STM32_MMCSDSLOTNO);
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#endif
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return OK;
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}
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