Files

SdFile.cpp
/* Arduino SdFat Library * Copyright (C) 2009 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/>. */ #include "Marlin.h" #ifdef SDSUPPORT #include "SdFile.h" /** Create a file object and open it in the current working directory. * * \param[in] path A path with a valid 8.3 DOS name for a file to be opened. * * \param[in] oflag Values for \a oflag are constructed by a bitwise-inclusive * OR of open flags. see SdBaseFile::open(SdBaseFile*, const char*, uint8_t). */ SdFile::SdFile(const char* path, uint8_t oflag) : SdBaseFile(path, oflag) { } //------------------------------------------------------------------------------ /** Write data to an open file. * * \note Data is moved to the cache but may not be written to the * storage device until sync() is called. * * \param[in] buf Pointer to the location of the data to be written. * * \param[in] nbyte Number of bytes to write. * * \return For success write() returns the number of bytes written, always * \a nbyte. If an error occurs, write() returns -1. Possible errors * include write() is called before a file has been opened, write is called * for a read-only file, device is full, a corrupt file system or an I/O error. * */ int16_t SdFile::write(const void* buf, uint16_t nbyte) { return SdBaseFile::write(buf, nbyte); } //------------------------------------------------------------------------------ /** Write a byte to a file. Required by the Arduino Print class. * \param[in] b the byte to be written. * Use writeError to check for errors. */ #if ARDUINO >= 100 size_t SdFile::write(uint8_t b) { return SdBaseFile::write(&b, 1); } #else void SdFile::write(uint8_t b) { SdBaseFile::write(&b, 1); } #endif //------------------------------------------------------------------------------ /** Write a string to a file. Used by the Arduino Print class. * \param[in] str Pointer to the string. * Use writeError to check for errors. */ void SdFile::write(const char* str) { SdBaseFile::write(str, strlen(str)); } //------------------------------------------------------------------------------ /** Write a PROGMEM string to a file. * \param[in] str Pointer to the PROGMEM string. * Use writeError to check for errors. */ void SdFile::write_P(PGM_P str) { for (uint8_t c; (c = pgm_read_byte(str)); str++) write(c); } //------------------------------------------------------------------------------ /** Write a PROGMEM string followed by CR/LF to a file. * \param[in] str Pointer to the PROGMEM string. * Use writeError to check for errors. */ void SdFile::writeln_P(PGM_P str) { write_P(str); write_P(PSTR("\r\n")); } #endif
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