sdc.h
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
---
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes ChibiOS/RT, without being obliged to provide
the source code for any proprietary components. See the file exception.txt
for full details of how and when the exception can be applied.
*/
/**
* @file sdc.h
* @brief SDC Driver macros and structures.
*
* @addtogroup SDC
* @{
*/
#ifndef _SDC_H_
#define _SDC_H_
#if HAL_USE_SDC || defined(__DOXYGEN__)
/*===========================================================================*/
/* Driver constants. */
/*===========================================================================*/
#define SDC_BLOCK_SIZE 512 /**< Fixed block size. */
/**
* @brief Fixed pattern for CMD8.
*/
#define SDC_CMD8_PATTERN 0x000001AA
/**
* @name SD cart types
* @{
*/
#define SDC_MODE_CARDTYPE_MASK 0xF /**< @brief Card type mask. */
#define SDC_MODE_CARDTYPE_SDV11 0 /**< @brief Card is SD V1.1.*/
#define SDC_MODE_CARDTYPE_SDV20 1 /**< @brief Card is SD V2.0.*/
#define SDC_MODE_CARDTYPE_MMC 2 /**< @brief Card is MMC. */
#define SDC_MODE_HIGH_CAPACITY 0x10 /**< @brief High cap.card. */
/** @} */
/**
* @brief Mask of error bits in R1 responses.
*/
#define SDC_R1_ERROR_MASK 0xFDFFE008
#define SDC_STS_IDLE 0
#define SDC_STS_READY 1
#define SDC_STS_IDENT 2
#define SDC_STS_STBY 3
#define SDC_STS_TRAN 4
#define SDC_STS_DATA 5
#define SDC_STS_RCV 6
#define SDC_STS_PRG 7
#define SDC_STS_DIS 8
#define SDC_CMD_GO_IDLE_STATE 0
#define SDC_CMD_INIT 1
#define SDC_CMD_ALL_SEND_CID 2
#define SDC_CMD_SEND_RELATIVE_ADDR 3
#define SDC_CMD_SET_BUS_WIDTH 6
#define SDC_CMD_SEL_DESEL_CARD 7
#define SDC_CMD_SEND_IF_COND 8
#define SDC_CMD_SEND_CSD 9
#define SDC_CMD_STOP_TRANSMISSION 12
#define SDC_CMD_SEND_STATUS 13
#define SDC_CMD_SET_BLOCKLEN 16
#define SDC_CMD_READ_SINGLE_BLOCK 17
#define SDC_CMD_READ_MULTIPLE_BLOCK 18
#define SDC_CMD_SET_BLOCK_COUNT 23
#define SDC_CMD_WRITE_BLOCK 24
#define SDC_CMD_WRITE_MULTIPLE_BLOCK 25
#define SDC_CMD_APP_OP_COND 41
#define SDC_CMD_LOCK_UNLOCK 42
#define SDC_CMD_APP_CMD 55
/*===========================================================================*/
/* Driver pre-compile time settings. */
/*===========================================================================*/
/**
* @name SDC configuration options
* @{
*/
/**
* @brief Number of initialization attempts before rejecting the card.
* @note Attempts are performed at 10mS intervals.
*/
#if !defined(SDC_INIT_RETRY) || defined(__DOXYGEN__)
#define SDC_INIT_RETRY 100
#endif
/**
* @brief Include support for MMC cards.
* @note MMC support is not yet implemented so this option must be kept
* at @p FALSE.
*/
#if !defined(SDC_MMC_SUPPORT) || defined(__DOXYGEN__)
#define SDC_MMC_SUPPORT FALSE
#endif
/**
* @brief Delays insertions.
* @details If enabled this options inserts delays into the MMC waiting
* routines releasing some extra CPU time for the threads with
* lower priority, this may slow down the driver a bit however.
*/
#if !defined(SDC_NICE_WAITING) || defined(__DOXYGEN__)
#define SDC_NICE_WAITING TRUE
#endif
/** @} */
/*===========================================================================*/
/* Derived constants and error checks. */
/*===========================================================================*/
/*===========================================================================*/
/* Driver data structures and types. */
/*===========================================================================*/
/**
* @brief Driver state machine possible states.
*/
typedef enum {
SDC_UNINIT = 0, /**< Not initialized. */
SDC_STOP = 1, /**< Stopped. */
SDC_READY = 2, /**< Ready. */
SDC_CONNECTING = 3, /**< Card connection in progress. */
SDC_DISCONNECTING = 4, /**< Card disconnection in progress. */
SDC_ACTIVE = 5, /**< Cart initialized. */
SDC_READING = 6, /**< Read operation in progress. */
SDC_WRITING = 7, /**< Write operation in progress. */
} sdcstate_t;
#include "sdc_lld.h"
/*===========================================================================*/
/* Driver macros. */
/*===========================================================================*/
/**
* @name R1 response utilities
* @{
*/
/**
* @brief Evaluates to @p TRUE if the R1 response contains error flags.
*
* @param[in] r1 the r1 response
*/
#define SDC_R1_ERROR(r1) (((r1) & SDC_R1_ERROR_MASK) != 0)
/**
* @brief Returns the status field of an R1 response.
*
* @param[in] r1 the r1 response
*/
#define SDC_R1_STS(r1) (((r1) >> 9) & 15)
/**
* @brief Evaluates to @p TRUE if the R1 response indicates a locked card.
*
* @param[in] r1 the r1 response
*/
#define SDC_R1_IS_CARD_LOCKED(r1) (((r1) >> 21) & 1)
/** @} */
/**
* @name Macro Functions
* @{
*/
/**
* @brief Returns the driver state.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @return The driver state.
*
* @api
*/
#define sdcGetDriverState(sdcp) ((sdcp)->state)
/**
* @brief Returns the card insertion status.
* @note This macro wraps a low level function named
* @p sdc_lld_is_card_inserted(), this function must be
* provided by the application because it is not part of the
* SDC driver.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @return The card state.
* @retval FALSE card not inserted.
* @retval TRUE card inserted.
*
* @api
*/
#define sdcIsCardInserted(sdcp) (sdc_lld_is_card_inserted(sdcp))
/**
* @brief Returns the write protect status.
* @note This macro wraps a low level function named
* @p sdc_lld_is_write_protected(), this function must be
* provided by the application because it is not part of the
* SDC driver.
*
* @param[in] sdcp pointer to the @p SDCDriver object
* @return The card state.
* @retval FALSE card not inserted.
* @retval TRUE card inserted.
*
* @api
*/
#define sdcIsWriteProtected(sdcp) (sdc_lld_is_write_protected(sdcp))
/** @} */
/*===========================================================================*/
/* External declarations. */
/*===========================================================================*/
#ifdef __cplusplus
extern "C" {
#endif
void sdcInit(void);
void sdcObjectInit(SDCDriver *sdcp);
void sdcStart(SDCDriver *sdcp, const SDCConfig *config);
void sdcStop(SDCDriver *sdcp);
bool_t sdcConnect(SDCDriver *sdcp);
bool_t sdcDisconnect(SDCDriver *sdcp);
bool_t sdcRead(SDCDriver *sdcp, uint32_t startblk,
uint8_t *buffer, uint32_t n);
bool_t sdcWrite(SDCDriver *sdcp, uint32_t startblk,
const uint8_t *buffer, uint32_t n);
bool_t _sdc_wait_for_transfer_state(SDCDriver *sdcp);
#ifdef __cplusplus
}
#endif
#endif /* HAL_USE_SDC */
#endif /* _SDC_H_ */
/** @} */