<commit_before>/* Arduino SdFat Library
 * Copyright (C) 2008 by <NAME>
 *
 * 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/>.
 */
#ifndef SdFatUtil_h
#define SdFatUtil_h
/**
 * \file
 * Useful utility functions.
 */
#include <Arduino.h>
#include <avr/pgmspace.h>
/** Store and print a string in flash memory.*/
#define PgmPrint(x) SerialPrint_P(PSTR(x))
/** Store and print a string in flash memory followed by a CR/LF.*/
#define PgmPrintln(x) SerialPrintln_P(PSTR(x))
/** Defined so doxygen works for function definitions. */
#define NOINLINE __attribute__((noinline,unused))
#define UNUSEDOK __attribute__((unused))
//------------------------------------------------------------------------------
/** Return the number of bytes currently free in RAM. */
static UNUSEDOK int FreeRam(void) {
  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 to the serial port.
 *
 * \param[in] str Pointer to string stored in flash memory.
 */
static NOINLINE void SerialPrint_P(PGM_P str) {
  for (uint8_t c; (c = pgm_read_byte(str)); str++) Serial.print(c);
}
//------------------------------------------------------------------------------
/**
 * %Print a string in flash memory followed by a CR/LF.
 *
 * \param[in] str Pointer to string stored in flash memory.
 */
static NOINLINE void SerialPrintln_P(PGM_P str) {
  SerialPrint_P(str);
  Serial.println();
}
#endif  // #define SdFatUtil_h<commit_msg>Serial.print() -> Serial.write() in SD SerialPrint_P function.<commit_after>/* Arduino SdFat Library
 * Copyright (C) 2008 by <NAME>
 *
 * 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/>.
 */
#ifndef SdFatUtil_h
#define SdFatUtil_h
/**
 * \file
 * Useful utility functions.
 */
#include <Arduino.h>
#include <avr/pgmspace.h>
/** Store and print a string in flash memory.*/
#define PgmPrint(x) SerialPrint_P(PSTR(x))
/** Store and print a string in flash memory followed by a CR/LF.*/
#define PgmPrintln(x) SerialPrintln_P(PSTR(x))
/** Defined so doxygen works for function definitions. */
#define NOINLINE __attribute__((noinline,unused))
#define UNUSEDOK __attribute__((unused))
//------------------------------------------------------------------------------
/** Return the number of bytes currently free in RAM. */
static UNUSEDOK int FreeRam(void) {
  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 to the serial port.
 *
 * \param[in] str Pointer to string stored in flash memory.
 */
static NOINLINE void SerialPrint_P(PGM_P str) {
  for (uint8_t c; (c = pgm_read_byte(str)); str++) Serial.write(c);
}
//------------------------------------------------------------------------------
/**
 * %Print a string in flash memory followed by a CR/LF.
 *
 * \param[in] str Pointer to string stored in flash memory.
 */
static NOINLINE void SerialPrintln_P(PGM_P str) {
  SerialPrint_P(str);
  Serial.println();
}
#endif  // #define SdFatUtil_h
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