200 lines
6.4 KiB
C
200 lines
6.4 KiB
C
/*
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ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
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2011,2012 Giovanni Di Sirio.
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This file is part of ChibiOS/RT.
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ChibiOS/RT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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ChibiOS/RT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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* @file mmc_spi.h
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* @brief MMC over SPI driver header.
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*
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* @addtogroup MMC_SPI
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* @{
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*/
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#ifndef _MMC_SPI_H_
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#define _MMC_SPI_H_
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#if HAL_USE_MMC_SPI || defined(__DOXYGEN__)
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/*===========================================================================*/
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/* Driver constants. */
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/*===========================================================================*/
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#define MMC_CMD0_RETRY 10
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#define MMC_CMD1_RETRY 100
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#define MMC_ACMD41_RETRY 100
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#define MMC_WAIT_DATA 10000
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/*===========================================================================*/
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/* Driver pre-compile time settings. */
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/*===========================================================================*/
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/**
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* @name MMC_SPI configuration options
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* @{
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*/
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/**
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* @brief Delays insertions.
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* @details If enabled this options inserts delays into the MMC waiting
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* routines releasing some extra CPU time for the threads with
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* lower priority, this may slow down the driver a bit however.
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* This option is recommended also if the SPI driver does not
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* use a DMA channel and heavily loads the CPU.
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*/
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#if !defined(MMC_NICE_WAITING) || defined(__DOXYGEN__)
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#define MMC_NICE_WAITING TRUE
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#endif
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/** @} */
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/*===========================================================================*/
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/* Derived constants and error checks. */
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/*===========================================================================*/
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#if !HAL_USE_SPI || !CH_USE_EVENTS
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#error "MMC_SPI driver requires HAL_USE_SPI and CH_USE_EVENTS"
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#endif
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/*===========================================================================*/
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/* Driver data structures and types. */
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/*===========================================================================*/
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/**
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* @brief MMC/SD over SPI driver configuration structure.
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*/
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typedef struct {
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/**
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* @brief SPI driver associated to this MMC driver.
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*/
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SPIDriver *spip;
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/**
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* @brief SPI low speed configuration used during initialization.
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*/
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const SPIConfig *lscfg;
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/**
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* @brief SPI high speed configuration used during transfers.
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*/
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const SPIConfig *hscfg;
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} MMCConfig;
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/**
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* @brief @p MMCDriver specific methods.
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*/
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#define _mmc_driver_methods \
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_mmcsd_block_device_methods
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/**
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* @extends MMCSDBlockDeviceVMT
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*
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* @brief @p MMCDriver virtual methods table.
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*/
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struct MMCDriverVMT {
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_mmc_driver_methods
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};
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/**
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* @extends MMCSDBlockDevice
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*
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* @brief Structure representing a MMC/SD over SPI driver.
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*/
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typedef struct {
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/**
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* @brief Virtual Methods Table.
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*/
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const struct MMCDriverVMT *vmt;
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_mmcsd_block_device_data
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/**
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* @brief Current configuration data.
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*/
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const MMCConfig *config;
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/***
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* @brief Addresses use blocks instead of bytes.
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*/
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bool_t block_addresses;
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} MMCDriver;
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/*===========================================================================*/
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/* Driver macros. */
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/*===========================================================================*/
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/**
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* @name Macro Functions
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* @{
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*/
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/**
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* @brief Returns the card insertion status.
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* @note This macro wraps a low level function named
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* @p sdc_lld_is_card_inserted(), this function must be
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* provided by the application because it is not part of the
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* SDC driver.
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*
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* @param[in] mmcp pointer to the @p MMCDriver object
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* @return The card state.
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* @retval FALSE card not inserted.
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* @retval TRUE card inserted.
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*
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* @api
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*/
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#define mmcIsCardInserted(mmcp) mmc_lld_is_card_inserted(mmcp)
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/**
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* @brief Returns the write protect status.
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*
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* @param[in] mmcp pointer to the @p MMCDriver object
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* @return The card state.
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* @retval FALSE card not inserted.
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* @retval TRUE card inserted.
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*
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* @api
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*/
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#define mmcIsWriteProtected(mmcp) mmc_lld_is_write_protected(mmcp)
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/** @} */
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/*===========================================================================*/
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/* External declarations. */
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/*===========================================================================*/
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#ifdef __cplusplus
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extern "C" {
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#endif
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void mmcInit(void);
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void mmcObjectInit(MMCDriver *mmcp);
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void mmcStart(MMCDriver *mmcp, const MMCConfig *config);
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void mmcStop(MMCDriver *mmcp);
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bool_t mmcConnect(MMCDriver *mmcp);
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bool_t mmcDisconnect(MMCDriver *mmcp);
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bool_t mmcStartSequentialRead(MMCDriver *mmcp, uint32_t startblk);
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bool_t mmcSequentialRead(MMCDriver *mmcp, uint8_t *buffer);
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bool_t mmcStopSequentialRead(MMCDriver *mmcp);
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bool_t mmcStartSequentialWrite(MMCDriver *mmcp, uint32_t startblk);
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bool_t mmcSequentialWrite(MMCDriver *mmcp, const uint8_t *buffer);
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bool_t mmcStopSequentialWrite(MMCDriver *mmcp);
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bool_t mmcSync(MMCDriver *mmcp);
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bool_t mmcGetInfo(MMCDriver *mmcp, BlockDeviceInfo *bdip);
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bool_t mmcErase(MMCDriver *mmcp, uint32_t startblk, uint32_t endblk);
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bool_t mmc_lld_is_card_inserted(MMCDriver *mmcp);
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bool_t mmc_lld_is_write_protected(MMCDriver *mmcp);
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#ifdef __cplusplus
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}
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#endif
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#endif /* HAL_USE_MMC_SPI */
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#endif /* _MMC_SPI_H_ */
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/** @} */
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