/*
    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/>.
*/

/**
 * @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.                                                         */
/*===========================================================================*/

/**
 * @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.  */
/** @} */

/**
 * @name    SDC bus error conditions
 * @{
 */
#define SDC_NO_ERROR          0           /**< @brief No error.             */
#define SDC_CMD_CRC_ERROR     1           /**< @brief Command CRC error.    */
#define SDC_DATA_CRC_ERROR    2           /**< @brief Data CRC error.       */
#define SDC_DATA_TIMEOUT      4           /**< @brief HW write timeout.     */
#define SDC_COMMAND_TIMEOUT   8           /**< @brief HW read timeout.      */
#define SDC_TX_UNDERRUN       16          /**< @brief TX buffer underrun.   */
#define SDC_RX_OVERRUN        32          /**< @brief RX buffer overrun.    */
#define SDC_STARTBIT_ERROR    64          /**< @brief Start bit missing.    */
#define SDC_OVERFLOW_ERROR    128         /**< @brief Card overflow error.  */
#define SDC_UNHANDLED_ERROR   0xFFFFFFFF
/** @} */

/*===========================================================================*/
/* 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    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        not write protected.
 * @retval TRUE         write protected.
 *
 * @api
 */
#define sdcIsWriteProtected(sdcp) (sdc_lld_is_write_protected(sdcp))

/**
 * @brief   Returns the card capacity in blocks.
 *
 * @param[in] sdcp      pointer to the @p SDCDriver object
 * @return              The card capacity.
 *
 * @api
 */
#define sdcGetCardCapacity(sdcp)  ((sdcp)->capacity)
/** @} */

/*===========================================================================*/
/* 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);
  sdcflags_t sdcGetAndClearErrors(SDCDriver *sdcp);
  bool_t sdcSync(SDCDriver *sdcp);
  bool_t sdcGetInfo(SDCDriver *sdcp, BlockDeviceInfo *bdip);
  bool_t _sdc_wait_for_transfer_state(SDCDriver *sdcp);
#ifdef __cplusplus
}
#endif

#endif /* HAL_USE_SDC */

#endif /* _SDC_H_ */

/** @} */