sdcard_spi.h

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/*
 * Copyright (C) 2015 Bart Slinger <bartslinger@gmail.com>
 *
 * This file is part of paparazzi.
 *
 * paparazzi 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 2, or (at your option)
 * any later version.
 *
 * paparazzi 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 paparazzi; see the file COPYING.  If not, write to
 * the Free Software Foundation, 59 Temple Place - Suite 330,
 * Boston, MA 02111-1307, USA.
 *
 */

#ifndef SDCARD_H_
#define SDCARD_H_

#include "std.h"
#include "mcu_periph/spi.h"

typedef void (*SDCardCallback)(void);

#define SD_BLOCK_SIZE 512

enum SdResponseType {
  SdResponseNone,
  SdResponseR1,
  SdResponseR3,
  SdResponseR7
};

enum SDCardType {
  SDCardType_Unknown,
  SDCardType_MmcV3,
  SDCardType_SdV1,
  SDCardType_SdV2byte,
  SDCardType_SdV2block
};

enum SDCardStatus {
  SDCard_UnInit,                            
  SDCard_Error,                             
  SDCard_Idle,                              
  SDCard_Busy,                              
  SDCard_BeforeDummyClock,                  
  SDCard_SendingDummyClock,                 
  SDCard_SendingCMD0,                       
  SDCard_ReadingCMD0Resp,                   
  SDCard_SendingCMD8,                       
  SDCard_ReadingCMD8Resp,                   
  SDCard_ReadingCMD8Parameter,              
  SDCard_SendingACMD41v2,                   
  SDCard_ReadingACMD41v2Resp,               
  SDCard_SendingCMD58,                      
  SDCard_ReadingCMD58Resp,                  
  SDCard_ReadingCMD58Parameter,             
  SDCard_SendingCMD16,                      
  SDCard_ReadingCMD16Resp,                  
  SDCard_SendingCMD24,                      
  SDCard_ReadingCMD24Resp,                  
  SDCard_BeforeSendingDataBlock,            
  SDCard_SendingDataBlock,                  
  SDCard_SendingCMD17,                      
  SDCard_ReadingCMD17Resp,                  
  SDCard_WaitingForDataToken,               
  SDCard_ReadingDataBlock,                  
  SDCard_SendingCMD25,                      
  SDCard_ReadingCMD25Resp,                  
  SDCard_MultiWriteIdle,                    
  SDCard_MultiWriteWriting,                 
  SDCard_MultiWriteBusy,                    
  SDCard_MultiWriteStopping,                
};

enum SDCardErrorStatus {
  SDCardError_None,
  SDCardError_InitializationNoResponse,
  SDCardError_CardInfoNoResponse,
  SDCardError_InvalidCardInfo,
  SDCardError_ACMD41Timeout,
  SDCardError_ACMD41NoResponse,
  SDCardError_CMD58NoResponse,
  SDCardError_CCSBitInvalid,
  SDCardError_SetBlockSizeNoResponse,
  SDCardError_WriteBlockNoResponse,
  SDCardError_SpiDriverError,
  SDCardError_BlockWriteError,
  SDCardError_ReadBlockNoResponse,
  SDCardError_ReadBlockTimeout,
  SDCardError_MultiWriteNoResponse,
  SDCardError_MultiWriteError,
};

struct SDCard {
  struct spi_periph *spi_p;                 
  struct spi_transaction spi_t;             
  volatile enum SDCardStatus status;        
  uint8_t input_buf[SD_BLOCK_SIZE + 10];    
  uint8_t output_buf[SD_BLOCK_SIZE + 10];   
  uint8_t response_counter;                 
  uint32_t timeout_counter;                 
  enum SDCardType card_type;                
  enum SDCardErrorStatus error_status;      
  SDCardCallback external_callback;         
};

extern struct SDCard sdcard1;

/* Public functions */
extern void sdcard_spi_init(struct SDCard *sdcard, struct spi_periph *spi_p, const uint8_t slave_idx);
extern void sdcard_spi_periodic(struct SDCard *sdcard);
extern void sdcard_spi_write_block(struct SDCard *sdcard, uint32_t addr);
extern void sdcard_spi_read_block(struct SDCard *sdcard, uint32_t addr, SDCardCallback callback);
extern void sdcard_spi_multiwrite_start(struct SDCard *sdcard, uint32_t addr);
extern void sdcard_spi_multiwrite_next(struct SDCard *sdcard, SDCardCallback callback);
extern void sdcard_spi_multiwrite_stop(struct SDCard *sdcard);

#endif // SDCARD_H_