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SdFatConfig.h
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SdFatConfig.h
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/* Arduino SdFat Library
* Copyright (C) 2012 by William Greiman
*
* This file is part of the Arduino SdFat 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 SdFat Library. If not, see
* <http://www.gnu.org/licenses/>.
*/
/**
* \file
* \brief configuration definitions
*/
#ifndef SdFatConfig_h
#define SdFatConfig_h
#include <stdint.h>
//------------------------------------------------------------------------------
/**
* Set USE_SEPARATE_FAT_CACHE nonzero to use a second 512 byte cache
* for FAT table entries. Improves performance for large writes that
* are not a multiple of 512 bytes.
*/
#ifdef __arm__
#define USE_SEPARATE_FAT_CACHE 1
#else // __arm__
#define USE_SEPARATE_FAT_CACHE 0
#endif // __arm__
//------------------------------------------------------------------------------
/**
* Set USE_MULTI_BLOCK_SD_IO nonzero to use multi-block SD read/write.
*
* Don't use mult-block read/write on small AVR boards.
*/
#if defined(RAMEND) && RAMEND < 3000
#define USE_MULTI_BLOCK_SD_IO 0
#else
#define USE_MULTI_BLOCK_SD_IO 1
#endif
//------------------------------------------------------------------------------
/**
* Force use of Arduino Standard SPI library if USE_ARDUINO_SPI_LIBRARY
* is nonzero.
*/
#define USE_ARDUINO_SPI_LIBRARY 0
//------------------------------------------------------------------------------
/**
* To enable SD card CRC checking set USE_SD_CRC nonzero.
*
* Set USE_SD_CRC to 1 to use a smaller slower CRC-CCITT function.
*
* Set USE_SD_CRC to 2 to used a larger faster table driven CRC-CCITT function.
*/
#define USE_SD_CRC 0
//------------------------------------------------------------------------------
/**
* To use multiple SD cards set USE_MULTIPLE_CARDS nonzero.
*
* Using multiple cards costs about 200 bytes of flash.
*
* Each card requires about 550 bytes of SRAM so use of a Mega is recommended.
*/
#define USE_MULTIPLE_CARDS 0
//------------------------------------------------------------------------------
/**
* Set DESTRUCTOR_CLOSES_FILE nonzero to close a file in its destructor.
*
* Causes use of lots of heap in ARM.
*/
#define DESTRUCTOR_CLOSES_FILE 0
//------------------------------------------------------------------------------
/**
* For AVR
*
* Set USE_SERIAL_FOR_STD_OUT nonzero to use Serial (the HardwareSerial class)
* for error messages and output from print functions like ls().
*
* If USE_SERIAL_FOR_STD_OUT is zero, a small non-interrupt driven class
* is used to output messages to serial port zero. This allows an alternate
* Serial library like SerialPort to be used with SdFat.
*
* You can redirect stdOut with SdFat::setStdOut(Print* stream) and
* get the current stream with SdFat::stdOut().
*/
#define USE_SERIAL_FOR_STD_OUT 0
//------------------------------------------------------------------------------
/**
* Call flush for endl if ENDL_CALLS_FLUSH is nonzero
*
* The standard for iostreams is to call flush. This is very costly for
* SdFat. Each call to flush causes 2048 bytes of I/O to the SD.
*
* SdFat has a single 512 byte buffer for SD I/O so it must write the current
* data block to the SD, read the directory block from the SD, update the
* directory entry, write the directory block to the SD and read the data
* block back into the buffer.
*
* The SD flash memory controller is not designed for this many rewrites
* so performance may be reduced by more than a factor of 100.
*
* If ENDL_CALLS_FLUSH is zero, you must call flush and/or close to force
* all data to be written to the SD.
*/
#define ENDL_CALLS_FLUSH 0
//------------------------------------------------------------------------------
/**
* Allow FAT12 volumes if FAT12_SUPPORT is nonzero.
* FAT12 has not been well tested.
*/
#define FAT12_SUPPORT 0
//------------------------------------------------------------------------------
/**
* SPI SCK divisor for SD initialization commands.
* or greater
*/
#ifdef __AVR__
const uint8_t SPI_SCK_INIT_DIVISOR = 64;
#else
const uint8_t SPI_SCK_INIT_DIVISOR = 128;
#endif
//------------------------------------------------------------------------------
/**
* Define MEGA_SOFT_SPI nonzero to use software SPI on Mega Arduinos.
* Default pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
* Edit Software Spi pins to change pin numbers.
*
* MEGA_SOFT_SPI allows an unmodified 328 Shield to be used
* on Mega Arduinos.
*/
#define MEGA_SOFT_SPI 0
//------------------------------------------------------------------------------
/**
* Define LEONARDO_SOFT_SPI nonzero to use software SPI on Leonardo Arduinos.
* Default pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
* Edit Software Spi pins to change pin numbers.
*
* LEONARDO_SOFT_SPI allows an unmodified 328 Shield to be used
* on Leonardo Arduinos.
*/
#define LEONARDO_SOFT_SPI 0
//------------------------------------------------------------------------------
/**
* Set USE_SOFTWARE_SPI nonzero to always use software SPI on AVR.
*/
#define USE_SOFTWARE_SPI 0
// define software SPI pins so Mega can use unmodified 168/328 shields
/** Default Software SPI chip select pin */
uint8_t const SOFT_SPI_CS_PIN = 10;
/** Software SPI Master Out Slave In pin */
uint8_t const SOFT_SPI_MOSI_PIN = 11;
/** Software SPI Master In Slave Out pin */
uint8_t const SOFT_SPI_MISO_PIN = 12;
/** Software SPI Clock pin */
uint8_t const SOFT_SPI_SCK_PIN = 13;
#endif // SdFatConfig_h