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SdFatUtil.cpp
/* Arduino SdFat Library * Copyright (C) 2008 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 "SdFatUtil.h" //------------------------------------------------------------------------------ /** Amount of free RAM * \return The number of free bytes. */ int SdFatUtil::FreeRam() { extern int __bss_end; extern int* __brkval; int free_memory; if (reinterpret_cast<int>(__brkval) == 0) { // if no heap use from end of bss section free_memory = reinterpret_cast<int>(&free_memory) - reinterpret_cast<int>(&__bss_end); } else { // use from top of stack to heap free_memory = reinterpret_cast<int>(&free_memory) - reinterpret_cast<int>(__brkval); } return free_memory; } //------------------------------------------------------------------------------ /** %Print a string in flash memory. * * \param[in] pr Print object for output. * \param[in] str Pointer to string stored in flash memory. */ void SdFatUtil::print_P( PGM_P str) { for (uint8_t c; (c = pgm_read_byte(str)); str++) MYSERIAL.write(c); } //------------------------------------------------------------------------------ /** %Print a string in flash memory followed by a CR/LF. * * \param[in] pr Print object for output. * \param[in] str Pointer to string stored in flash memory. */ void SdFatUtil::println_P( PGM_P str) { print_P( str); MYSERIAL.println(); } //------------------------------------------------------------------------------ /** %Print a string in flash memory to Serial. * * \param[in] str Pointer to string stored in flash memory. */ void SdFatUtil::SerialPrint_P(PGM_P str) { print_P(str); } //------------------------------------------------------------------------------ /** %Print a string in flash memory to Serial followed by a CR/LF. * * \param[in] str Pointer to string stored in flash memory. */ void SdFatUtil::SerialPrintln_P(PGM_P str) { println_P( str); } #endif
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