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99 lines
3.4 KiB
C
99 lines
3.4 KiB
C
/*
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* Copyright (c) 2016, Benoît Thébaudeau <benoit@wsystem.com>
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* All rights reserved.
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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 are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors
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* may be 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 "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN 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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* \addtogroup mmc
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* @{
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*
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* \defgroup mmc-arch SD/MMC architecture-specific definitions
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*
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* SD/MMC device driver architecture-specific definitions.
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* @{
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*
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* \file
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* Header file for the SD/MMC device driver architecture-specific definitions.
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*/
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#ifndef MMC_ARCH_H_
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#define MMC_ARCH_H_
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#include <stddef.h>
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#include <stdbool.h>
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#include <stdint.h>
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/** \brief Callback of the SD/MMC driver to call when the card-detection signal
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* changes.
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* \param dev Device
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* \param cd Whether a card is detected
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* \note Using this function is not mandatory. This only allows to detect a card
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* replacement between two successive calls to the SD/MMC driver API.
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*/
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void mmc_arch_cd_changed_callback(uint8_t dev, bool cd);
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/** \brief Gets the state of the card-detection signal.
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* \param dev Device
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* \return Whether a card is detected
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*/
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bool mmc_arch_get_cd(uint8_t dev);
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/** \brief Gets the state of the write-protection signal.
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* \param dev Device
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* \return Whether the card is write-protected
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*/
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bool mmc_arch_get_wp(uint8_t dev);
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/** \brief Sets the SPI /CS signal as indicated.
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* \param dev Device
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* \param sel Whether to assert /CS
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*/
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void mmc_arch_spi_select(uint8_t dev, bool sel);
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/** \brief Sets the SPI clock frequency.
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* \param dev Device
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* \param freq Frequency (Hz)
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*/
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void mmc_arch_spi_set_clock_freq(uint8_t dev, uint32_t freq);
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/** \brief Performs an SPI transfer.
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* \param dev Device
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* \param tx_buf Pointer to the transmission buffer, or \c NULL
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* \param tx_cnt Number of bytes to transmit, or \c 0
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* \param rx_buf Pointer to the reception buffer, or \c NULL
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* \param rx_cnt Number of bytes to receive, or \c 0
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*/
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void mmc_arch_spi_xfer(uint8_t dev, const void *tx_buf, size_t tx_cnt,
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void *rx_buf, size_t rx_cnt);
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#endif /* MMC_ARCH_H_ */
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/**
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* @}
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* @}
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*/
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