Sd2Card.h

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/* Arduino Sd2Card Library
 * Copyright (C) 2009 by William Greiman
 *
 * This file is part of the Arduino Sd2Card Library
 *
 * This Library 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.
 *
 * This Library 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 the Arduino Sd2Card Library.  If not, see
 * <http://www.gnu.org/licenses/>.
 */
#ifndef Sd2Card_h
#define Sd2Card_h

#include "Sd2PinMap.h"
#include "SdInfo.h"
uint8_t const SPI_FULL_SPEED = 0;
uint8_t const SPI_HALF_SPEED = 1;
uint8_t const SPI_QUARTER_SPEED = 2;
#define USE_SPI_LIB

#define MEGA_SOFT_SPI 0
//------------------------------------------------------------------------------
#if MEGA_SOFT_SPI && (defined(__AVR_ATmega1280__)||defined(__AVR_ATmega2560__))
#define SOFTWARE_SPI
#endif  // MEGA_SOFT_SPI
//------------------------------------------------------------------------------
// SPI pin definitions
//
#ifndef SOFTWARE_SPI
// hardware pin defs
uint8_t const  SD_CHIP_SELECT_PIN = SS_PIN;
// The following three pins must not be redefined for hardware SPI.
uint8_t const  SPI_MOSI_PIN = MOSI_PIN;
uint8_t const  SPI_MISO_PIN = MISO_PIN;
uint8_t const  SPI_SCK_PIN = SCK_PIN;
#ifndef USE_SPI_LIB
#define OPTIMIZE_HARDWARE_SPI
#endif

#else  // SOFTWARE_SPI
// define software SPI pins so Mega can use unmodified GPS Shield
uint8_t const SD_CHIP_SELECT_PIN = 10;
uint8_t const SPI_MOSI_PIN = 11;
uint8_t const SPI_MISO_PIN = 12;
uint8_t const SPI_SCK_PIN = 13;
#endif  // SOFTWARE_SPI
//------------------------------------------------------------------------------
#define SD_PROTECT_BLOCK_ZERO 1

uint16_t const SD_INIT_TIMEOUT = 2000;
uint16_t const SD_ERASE_TIMEOUT = 10000;
uint16_t const SD_READ_TIMEOUT = 300;
uint16_t const SD_WRITE_TIMEOUT = 600;
//------------------------------------------------------------------------------
// SD card errors
uint8_t const SD_CARD_ERROR_CMD0 = 0X1;
uint8_t const SD_CARD_ERROR_CMD8 = 0X2;
uint8_t const SD_CARD_ERROR_CMD17 = 0X3;
uint8_t const SD_CARD_ERROR_CMD24 = 0X4;
uint8_t const SD_CARD_ERROR_CMD25 = 0X05;
uint8_t const SD_CARD_ERROR_CMD58 = 0X06;
uint8_t const SD_CARD_ERROR_ACMD23 = 0X07;
uint8_t const SD_CARD_ERROR_ACMD41 = 0X08;
uint8_t const SD_CARD_ERROR_BAD_CSD = 0X09;
uint8_t const SD_CARD_ERROR_ERASE = 0X0A;
uint8_t const SD_CARD_ERROR_ERASE_SINGLE_BLOCK = 0X0B;
uint8_t const SD_CARD_ERROR_ERASE_TIMEOUT = 0X0C;
uint8_t const SD_CARD_ERROR_READ = 0X0D;
uint8_t const SD_CARD_ERROR_READ_REG = 0X0E;
uint8_t const SD_CARD_ERROR_READ_TIMEOUT = 0X0F;
uint8_t const SD_CARD_ERROR_STOP_TRAN = 0X10;
uint8_t const SD_CARD_ERROR_WRITE = 0X11;
uint8_t const SD_CARD_ERROR_WRITE_BLOCK_ZERO = 0X12;
uint8_t const SD_CARD_ERROR_WRITE_MULTIPLE = 0X13;
uint8_t const SD_CARD_ERROR_WRITE_PROGRAMMING = 0X14;
uint8_t const SD_CARD_ERROR_WRITE_TIMEOUT = 0X15;
uint8_t const SD_CARD_ERROR_SCK_RATE = 0X16;
//------------------------------------------------------------------------------
// card types
uint8_t const SD_CARD_TYPE_SD1 = 1;
uint8_t const SD_CARD_TYPE_SD2 = 2;
uint8_t const SD_CARD_TYPE_SDHC = 3;
//------------------------------------------------------------------------------
class Sd2Card {
 public:
  Sd2Card(void) : errorCode_(0), inBlock_(0), partialBlockRead_(0), type_(0) {}
  uint32_t cardSize(void);
  uint8_t erase(uint32_t firstBlock, uint32_t lastBlock);
  uint8_t eraseSingleBlockEnable(void);
  uint8_t errorCode(void) const {return errorCode_;}
  uint8_t errorData(void) const {return status_;}
  uint8_t init(void) {
    return init(SPI_FULL_SPEED, SD_CHIP_SELECT_PIN);
  }
  uint8_t init(uint8_t sckRateID) {
    return init(sckRateID, SD_CHIP_SELECT_PIN);
  }
  uint8_t init(uint8_t sckRateID, uint8_t chipSelectPin);
  void partialBlockRead(uint8_t value);
  uint8_t partialBlockRead(void) const {return partialBlockRead_;}
  uint8_t readBlock(uint32_t block, uint8_t* dst);
  uint8_t readData(uint32_t block,
          uint16_t offset, uint16_t count, uint8_t* dst);
  uint8_t readCID(cid_t* cid) {
    return readRegister(CMD10, cid);
  }
  uint8_t readCSD(csd_t* csd) {
    return readRegister(CMD9, csd);
  }
  void readEnd(void);
  uint8_t setSckRate(uint8_t sckRateID);
  uint8_t type(void) const {return type_;}
  uint8_t writeBlock(uint32_t blockNumber, const uint8_t* src);
  uint8_t writeData(const uint8_t* src);
  uint8_t writeStart(uint32_t blockNumber, uint32_t eraseCount);
  uint8_t writeStop(void);
 private:
  uint32_t block_;
  uint8_t chipSelectPin_;
  uint8_t errorCode_;
  uint8_t inBlock_;
  uint16_t offset_;
  uint8_t partialBlockRead_;
  uint8_t status_;
  uint8_t type_;
  // private functions
  uint8_t cardAcmd(uint8_t cmd, uint32_t arg) {
    cardCommand(CMD55, 0);
    return cardCommand(cmd, arg);
  }
  uint8_t cardCommand(uint8_t cmd, uint32_t arg);
  void error(uint8_t code) {errorCode_ = code;}
  uint8_t readRegister(uint8_t cmd, void* buf);
  uint8_t sendWriteCommand(uint32_t blockNumber, uint32_t eraseCount);
  void chipSelectHigh(void);
  void chipSelectLow(void);
  void type(uint8_t value) {type_ = value;}
  uint8_t waitNotBusy(uint16_t timeoutMillis);
  uint8_t writeData(uint8_t token, const uint8_t* src);
  uint8_t waitStartBlock(void);
};
#endif  // Sd2Card_h