234 lines
8.8 KiB
C
234 lines
8.8 KiB
C
|
/* 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
|
||
|
|
/**
|
||
|
|
* \file
|
||
|
|
* Sd2Card class
|
||
|
|
*/
|
||
|
|
#include "Sd2PinMap.h"
|
||
|
|
#include "SdInfo.h"
|
||
|
|
/** Set SCK to max rate of F_CPU/2. See Sd2Card::setSckRate(). */
|
||
|
|
uint8_t const SPI_FULL_SPEED = 0;
|
||
|
|
/** Set SCK rate to F_CPU/4. See Sd2Card::setSckRate(). */
|
||
|
|
uint8_t const SPI_HALF_SPEED = 1;
|
||
|
|
/** Set SCK rate to F_CPU/8. Sd2Card::setSckRate(). */
|
||
|
|
uint8_t const SPI_QUARTER_SPEED = 2;
|
||
|
|
/**
|
||
|
|
* Define MEGA_SOFT_SPI non-zero to use software SPI on Mega Arduinos.
|
||
|
|
* Pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
|
||
|
|
*
|
||
|
|
* MEGA_SOFT_SPI allows an unmodified Adafruit GPS Shield to be used
|
||
|
|
* on Mega Arduinos. Software SPI works well with GPS Shield V1.1
|
||
|
|
* but many SD cards will fail with GPS Shield V1.0.
|
||
|
|
*/
|
||
|
|
#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
|
||
|
|
/**
|
||
|
|
* SD Chip Select pin
|
||
|
|
*
|
||
|
|
* Warning if this pin is redefined the hardware SS will pin will be enabled
|
||
|
|
* as an output by init(). An avr processor will not function as an SPI
|
||
|
|
* master unless SS is set to output mode.
|
||
|
|
*/
|
||
|
|
/** The default chip select pin for the SD card is SS. */
|
||
|
|
uint8_t const SD_CHIP_SELECT_PIN = SS_PIN;
|
||
|
|
// The following three pins must not be redefined for hardware SPI.
|
||
|
|
/** SPI Master Out Slave In pin */
|
||
|
|
uint8_t const SPI_MOSI_PIN = MOSI_PIN;
|
||
|
|
/** SPI Master In Slave Out pin */
|
||
|
|
uint8_t const SPI_MISO_PIN = MISO_PIN;
|
||
|
|
/** SPI Clock pin */
|
||
|
|
uint8_t const SPI_SCK_PIN = SCK_PIN;
|
||
|
|
/** optimize loops for hardware SPI */
|
||
|
|
#define OPTIMIZE_HARDWARE_SPI
|
||
|
|
|
||
|
|
#else // SOFTWARE_SPI
|
||
|
|
// define software SPI pins so Mega can use unmodified GPS Shield
|
||
|
|
/** SPI chip select pin */
|
||
|
|
uint8_t const SD_CHIP_SELECT_PIN = 10;
|
||
|
|
/** SPI Master Out Slave In pin */
|
||
|
|
uint8_t const SPI_MOSI_PIN = 11;
|
||
|
|
/** SPI Master In Slave Out pin */
|
||
|
|
uint8_t const SPI_MISO_PIN = 12;
|
||
|
|
/** SPI Clock pin */
|
||
|
|
uint8_t const SPI_SCK_PIN = 13;
|
||
|
|
#endif // SOFTWARE_SPI
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/** Protect block zero from write if nonzero */
|
||
|
|
#define SD_PROTECT_BLOCK_ZERO 1
|
||
|
|
/** init timeout ms */
|
||
|
|
uint16_t const SD_INIT_TIMEOUT = 2000;
|
||
|
|
/** erase timeout ms */
|
||
|
|
uint16_t const SD_ERASE_TIMEOUT = 10000;
|
||
|
|
/** read timeout ms */
|
||
|
|
uint16_t const SD_READ_TIMEOUT = 300;
|
||
|
|
/** write time out ms */
|
||
|
|
uint16_t const SD_WRITE_TIMEOUT = 600;
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// SD card errors
|
||
|
|
/** timeout error for command CMD0 */
|
||
|
|
uint8_t const SD_CARD_ERROR_CMD0 = 0X1;
|
||
|
|
/** CMD8 was not accepted - not a valid SD card*/
|
||
|
|
uint8_t const SD_CARD_ERROR_CMD8 = 0X2;
|
||
|
|
/** card returned an error response for CMD17 (read block) */
|
||
|
|
uint8_t const SD_CARD_ERROR_CMD17 = 0X3;
|
||
|
|
/** card returned an error response for CMD24 (write block) */
|
||
|
|
uint8_t const SD_CARD_ERROR_CMD24 = 0X4;
|
||
|
|
/** WRITE_MULTIPLE_BLOCKS command failed */
|
||
|
|
uint8_t const SD_CARD_ERROR_CMD25 = 0X05;
|
||
|
|
/** card returned an error response for CMD58 (read OCR) */
|
||
|
|
uint8_t const SD_CARD_ERROR_CMD58 = 0X06;
|
||
|
|
/** SET_WR_BLK_ERASE_COUNT failed */
|
||
|
|
uint8_t const SD_CARD_ERROR_ACMD23 = 0X07;
|
||
|
|
/** card's ACMD41 initialization process timeout */
|
||
|
|
uint8_t const SD_CARD_ERROR_ACMD41 = 0X08;
|
||
|
|
/** card returned a bad CSR version field */
|
||
|
|
uint8_t const SD_CARD_ERROR_BAD_CSD = 0X09;
|
||
|
|
/** erase block group command failed */
|
||
|
|
uint8_t const SD_CARD_ERROR_ERASE = 0X0A;
|
||
|
|
/** card not capable of single block erase */
|
||
|
|
uint8_t const SD_CARD_ERROR_ERASE_SINGLE_BLOCK = 0X0B;
|
||
|
|
/** Erase sequence timed out */
|
||
|
|
uint8_t const SD_CARD_ERROR_ERASE_TIMEOUT = 0X0C;
|
||
|
|
/** card returned an error token instead of read data */
|
||
|
|
uint8_t const SD_CARD_ERROR_READ = 0X0D;
|
||
|
|
/** read CID or CSD failed */
|
||
|
|
uint8_t const SD_CARD_ERROR_READ_REG = 0X0E;
|
||
|
|
/** timeout while waiting for start of read data */
|
||
|
|
uint8_t const SD_CARD_ERROR_READ_TIMEOUT = 0X0F;
|
||
|
|
/** card did not accept STOP_TRAN_TOKEN */
|
||
|
|
uint8_t const SD_CARD_ERROR_STOP_TRAN = 0X10;
|
||
|
|
/** card returned an error token as a response to a write operation */
|
||
|
|
uint8_t const SD_CARD_ERROR_WRITE = 0X11;
|
||
|
|
/** attempt to write protected block zero */
|
||
|
|
uint8_t const SD_CARD_ERROR_WRITE_BLOCK_ZERO = 0X12;
|
||
|
|
/** card did not go ready for a multiple block write */
|
||
|
|
uint8_t const SD_CARD_ERROR_WRITE_MULTIPLE = 0X13;
|
||
|
|
/** card returned an error to a CMD13 status check after a write */
|
||
|
|
uint8_t const SD_CARD_ERROR_WRITE_PROGRAMMING = 0X14;
|
||
|
|
/** timeout occurred during write programming */
|
||
|
|
uint8_t const SD_CARD_ERROR_WRITE_TIMEOUT = 0X15;
|
||
|
|
/** incorrect rate selected */
|
||
|
|
uint8_t const SD_CARD_ERROR_SCK_RATE = 0X16;
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// card types
|
||
|
|
/** Standard capacity V1 SD card */
|
||
|
|
uint8_t const SD_CARD_TYPE_SD1 = 1;
|
||
|
|
/** Standard capacity V2 SD card */
|
||
|
|
uint8_t const SD_CARD_TYPE_SD2 = 2;
|
||
|
|
/** High Capacity SD card */
|
||
|
|
uint8_t const SD_CARD_TYPE_SDHC = 3;
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
/**
|
||
|
|
* \class Sd2Card
|
||
|
|
* \brief Raw access to SD and SDHC flash memory cards.
|
||
|
|
*/
|
||
|
|
class Sd2Card {
|
||
|
|
public:
|
||
|
|
/** Construct an instance of Sd2Card. */
|
||
|
|
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);
|
||
|
|
/**
|
||
|
|
* \return error code for last error. See Sd2Card.h for a list of error codes.
|
||
|
|
*/
|
||
|
|
uint8_t errorCode(void) const {return errorCode_;}
|
||
|
|
/** \return error data for last error. */
|
||
|
|
uint8_t errorData(void) const {return status_;}
|
||
|
|
/**
|
||
|
|
* Initialize an SD flash memory card with default clock rate and chip
|
||
|
|
* select pin. See sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin).
|
||
|
|
*/
|
||
|
|
uint8_t init(void) {
|
||
|
|
return init(SPI_FULL_SPEED, SD_CHIP_SELECT_PIN);
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Initialize an SD flash memory card with the selected SPI clock rate
|
||
|
|
* and the default SD chip select pin.
|
||
|
|
* See sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin).
|
||
|
|
*/
|
||
|
|
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);
|
||
|
|
/** Returns the current value, true or false, for partial block read. */
|
||
|
|
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);
|
||
|
|
/**
|
||
|
|
* Read a cards CID register. The CID contains card identification
|
||
|
|
* information such as Manufacturer ID, Product name, Product serial
|
||
|
|
* number and Manufacturing date. */
|
||
|
|
uint8_t readCID(cid_t* cid) {
|
||
|
|
return readRegister(CMD10, cid);
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* Read a cards CSD register. The CSD contains Card-Specific Data that
|
||
|
|
* provides information regarding access to the card's contents. */
|
||
|
|
uint8_t readCSD(csd_t* csd) {
|
||
|
|
return readRegister(CMD9, csd);
|
||
|
|
}
|
||
|
|
void readEnd(void);
|
||
|
|
uint8_t setSckRate(uint8_t sckRateID);
|
||
|
|
/** Return the card type: SD V1, SD V2 or SDHC */
|
||
|
|
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
|