get rid of indirect ringbuffer calls, made some inlines, removed virtual and streaming class requirements.

Marlin/MarlinSerial.cpp

 
 #include "MarlinSerial.h"
 
-// Define constants and variables for buffering incoming serial data.  We're
-// using a ring buffer (I think), in which rx_buffer_head is the index of the
-// location to which to write the next incoming character and rx_buffer_tail
-// is the index of the location from which to read.
-#define RX_BUFFER_SIZE 128
 
-struct ring_buffer
-{
-  unsigned char buffer[RX_BUFFER_SIZE];
-  int head;
-  int tail;
-};
+
 
 #if defined(UBRRH) || defined(UBRR0H)
   ring_buffer rx_buffer  =  { { 0 }, 0, 0 };
 #endif
 
 
-inline void store_char(unsigned char c, ring_buffer *rx_buffer)
+inline void store_char(unsigned char c)
 {
-  int i = (unsigned int)(rx_buffer->head + 1) % RX_BUFFER_SIZE;
+  int i = (unsigned int)(rx_buffer.head + 1) % RX_BUFFER_SIZE;
 
   // if we should be storing the received character into the location
   // just before the tail (meaning that the head would advance to the
   // current location of the tail), we're about to overflow the buffer
   // and so we don't write the character or advance the head.
-  if (i != rx_buffer->tail) {
-    rx_buffer->buffer[rx_buffer->head] = c;
-    rx_buffer->head = i;
+  if (i != rx_buffer.tail) {
+    rx_buffer.buffer[rx_buffer.head] = c;
+    rx_buffer.head = i;
   }
 }
 
   #else
     #error UDR not defined
   #endif
-    store_char(c, &rx_buffer);
+    store_char(c);
   }
 #endif
 
 // Constructors ////////////////////////////////////////////////////////////////
 
-MarlinSerial::MarlinSerial(ring_buffer *rx_buffer,
+MarlinSerial::MarlinSerial(
   volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
   volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
   volatile uint8_t *udr,
   uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udre, uint8_t u2x)
 {
-  _rx_buffer = rx_buffer;
   _ubrrh = ubrrh;
   _ubrrl = ubrrl;
   _ucsra = ucsra;
   cbi(*_ucsrb, _rxcie);  
 }
 
-int MarlinSerial::available(void)
-{
-  return (unsigned int)(RX_BUFFER_SIZE + _rx_buffer->head - _rx_buffer->tail) % RX_BUFFER_SIZE;
-}
+
 
 int MarlinSerial::peek(void)
 {
-  if (_rx_buffer->head == _rx_buffer->tail) {
+  if (rx_buffer.head == rx_buffer.tail) {
     return -1;
   } else {
-    return _rx_buffer->buffer[_rx_buffer->tail];
+    return rx_buffer.buffer[rx_buffer.tail];
   }
 }
 
 int MarlinSerial::read(void)
 {
   // if the head isn't ahead of the tail, we don't have any characters
-  if (_rx_buffer->head == _rx_buffer->tail) {
+  if (rx_buffer.head == rx_buffer.tail) {
     return -1;
   } else {
-    unsigned char c = _rx_buffer->buffer[_rx_buffer->tail];
-    _rx_buffer->tail = (unsigned int)(_rx_buffer->tail + 1) % RX_BUFFER_SIZE;
+    unsigned char c = rx_buffer.buffer[rx_buffer.tail];
+    rx_buffer.tail = (unsigned int)(rx_buffer.tail + 1) % RX_BUFFER_SIZE;
     return c;
   }
 }
   // the value to rx_buffer_tail; the previous value of rx_buffer_head
   // may be written to rx_buffer_tail, making it appear as if the buffer
   // were full, not empty.
-  _rx_buffer->head = _rx_buffer->tail;
+  rx_buffer.head = rx_buffer.tail;
 }
 
-void MarlinSerial::write(uint8_t c)
+
+
+
+/// imports from print.h
+/* default implementation: may be overridden */
+void MarlinSerial::write(const char *str)
 {
-  while (!((*_ucsra) & (1 << _udre)))
-    ;
+  while (*str)
+    write(*str++);
+}
 
-  *_udr = c;
+/* default implementation: may be overridden */
+void MarlinSerial::write(const uint8_t *buffer, size_t size)
+{
+  while (size--)
+    write(*buffer++);
 }
 
-void MarlinSerial::checkRx()
+void MarlinSerial::print(const String &s)
 {
-  if((UCSR0A & (1<<RXC0)) != 0) {
-    unsigned char c  =  UDR0;
-    store_char(c, &rx_buffer);
+  for (int i = 0; i < s.length(); i++) {
+    write(s[i]);
   }
 }
 
+void MarlinSerial::print(const char str[])
+{
+  write(str);
+}
+
+void MarlinSerial::print(char c, int base)
+{
+  print((long) c, base);
+}
+
+void MarlinSerial::print(unsigned char b, int base)
+{
+  print((unsigned long) b, base);
+}
+
+void MarlinSerial::print(int n, int base)
+{
+  print((long) n, base);
+}
+
+void MarlinSerial::print(unsigned int n, int base)
+{
+  print((unsigned long) n, base);
+}
+
+void MarlinSerial::print(long n, int base)
+{
+  if (base == 0) {
+    write(n);
+  } else if (base == 10) {
+    if (n < 0) {
+      print('-');
+      n = -n;
+    }
+    printNumber(n, 10);
+  } else {
+    printNumber(n, base);
+  }
+}
+
+void MarlinSerial::print(unsigned long n, int base)
+{
+  if (base == 0) write(n);
+  else printNumber(n, base);
+}
+
+void MarlinSerial::print(double n, int digits)
+{
+  printFloat(n, digits);
+}
+
+void MarlinSerial::println(void)
+{
+  print('\r');
+  print('\n');  
+}
+
+void MarlinSerial::println(const String &s)
+{
+  print(s);
+  println();
+}
+
+void MarlinSerial::println(const char c[])
+{
+  print(c);
+  println();
+}
+
+void MarlinSerial::println(char c, int base)
+{
+  print(c, base);
+  println();
+}
+
+void MarlinSerial::println(unsigned char b, int base)
+{
+  print(b, base);
+  println();
+}
+
+void MarlinSerial::println(int n, int base)
+{
+  print(n, base);
+  println();
+}
+
+void MarlinSerial::println(unsigned int n, int base)
+{
+  print(n, base);
+  println();
+}
+
+void MarlinSerial::println(long n, int base)
+{
+  print(n, base);
+  println();
+}
+
+void MarlinSerial::println(unsigned long n, int base)
+{
+  print(n, base);
+  println();
+}
+
+void MarlinSerial::println(double n, int digits)
+{
+  print(n, digits);
+  println();
+}
+
+// Private Methods /////////////////////////////////////////////////////////////
+
+void MarlinSerial::printNumber(unsigned long n, uint8_t base)
+{
+  unsigned char buf[8 * sizeof(long)]; // Assumes 8-bit chars. 
+  unsigned long i = 0;
+
+  if (n == 0) {
+    print('0');
+    return;
+  } 
+
+  while (n > 0) {
+    buf[i++] = n % base;
+    n /= base;
+  }
+
+  for (; i > 0; i--)
+    print((char) (buf[i - 1] < 10 ?
+      '0' + buf[i - 1] :
+      'A' + buf[i - 1] - 10));
+}
+
+void MarlinSerial::printFloat(double number, uint8_t digits) 
+{ 
+  // Handle negative numbers
+  if (number < 0.0)
+  {
+     print('-');
+     number = -number;
+  }
+
+  // Round correctly so that print(1.999, 2) prints as "2.00"
+  double rounding = 0.5;
+  for (uint8_t i=0; i<digits; ++i)
+    rounding /= 10.0;
+  
+  number += rounding;
+
+  // Extract the integer part of the number and print it
+  unsigned long int_part = (unsigned long)number;
+  double remainder = number - (double)int_part;
+  print(int_part);
+
+  // Print the decimal point, but only if there are digits beyond
+  if (digits > 0)
+    print("."); 
+
+  // Extract digits from the remainder one at a time
+  while (digits-- > 0)
+  {
+    remainder *= 10.0;
+    int toPrint = int(remainder);
+    print(toPrint);
+    remainder -= toPrint; 
+  } 
+}
+
 // Preinstantiate Objects //////////////////////////////////////////////////////
 
 #if defined(UBRR0H) && defined(UBRR0L)
-  MarlinSerial MSerial(&rx_buffer, &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UDR0, RXEN0, TXEN0, RXCIE0, UDRE0, U2X0);
+  MarlinSerial MSerial( &UBRR0H, &UBRR0L, &UCSR0A, &UCSR0B, &UDR0, RXEN0, TXEN0, RXCIE0, UDRE0, U2X0);
 #else
   #error no serial port defined  (port 0)
 #endif

Marlin/MarlinSerial.h

 #define MarlinSerial_h
 
 #include <inttypes.h>
+#include <Stream.h>
 
-#include "Stream.h"
 
-struct ring_buffer;
+// Define constants and variables for buffering incoming serial data.  We're
+// using a ring buffer (I think), in which rx_buffer_head is the index of the
+// location to which to write the next incoming character and rx_buffer_tail
+// is the index of the location from which to read.
+#define RX_BUFFER_SIZE 128
 
-class MarlinSerial : public Stream
+
+struct ring_buffer
+{
+  unsigned char buffer[RX_BUFFER_SIZE];
+  int head;
+  int tail;
+};
+
+#if defined(UBRRH) || defined(UBRR0H)
+  extern ring_buffer rx_buffer;
+#endif
+
+class MarlinSerial //: public Stream
 {
   private:
-    ring_buffer *_rx_buffer;
     volatile uint8_t *_ubrrh;
     volatile uint8_t *_ubrrl;
     volatile uint8_t *_ucsra;
     uint8_t _udre;
     uint8_t _u2x;
   public:
-    MarlinSerial(ring_buffer *rx_buffer,
+    MarlinSerial(
       volatile uint8_t *ubrrh, volatile uint8_t *ubrrl,
       volatile uint8_t *ucsra, volatile uint8_t *ucsrb,
       volatile uint8_t *udr,
       uint8_t rxen, uint8_t txen, uint8_t rxcie, uint8_t udre, uint8_t u2x);
     void begin(long);
     void end();
-    virtual int available(void);
-    virtual int peek(void);
-    virtual int read(void);
-    virtual void flush(void);
-    virtual void write(uint8_t);
-    virtual void checkRx(void);
-    using Print::write; // pull in write(str) and write(buf, size) from Print
+    inline int available(void)
+    {
+      return (unsigned int)(RX_BUFFER_SIZE + rx_buffer.head - rx_buffer.tail) % RX_BUFFER_SIZE;
+    }
+    int peek(void);
+    int read(void);
+    void flush(void);
+    inline void write(uint8_t c)
+    {
+      while (!((*_ucsra) & (1 << _udre)))
+        ;
+
+      *_udr = c;
+    }
+    
+    
+    inline void checkRx(void)
+    {
+      if((UCSR0A & (1<<RXC0)) != 0) {
+        unsigned char c  =  UDR0;
+        int i = (unsigned int)(rx_buffer.head + 1) % RX_BUFFER_SIZE;
+
+        // if we should be storing the received character into the location
+        // just before the tail (meaning that the head would advance to the
+        // current location of the tail), we're about to overflow the buffer
+        // and so we don't write the character or advance the head.
+        if (i != rx_buffer.tail) {
+          rx_buffer.buffer[rx_buffer.head] = c;
+          rx_buffer.head = i;
+        }
+      }
+    }
+    
+    
+    private:
+    void printNumber(unsigned long, uint8_t);
+    void printFloat(double, uint8_t);
+    
+    
+  public:
+    void write(const char *str);
+    void write( const uint8_t *buffer, size_t size);
+    
+    void print(const String &);
+    void print(const char[]);
+    void print(char, int = BYTE);
+    void print(unsigned char, int = BYTE);
+    void print(int, int = DEC);
+    void print(unsigned int, int = DEC);
+    void print(long, int = DEC);
+    void print(unsigned long, int = DEC);
+    void print(double, int = 2);
+
+    void println(const String &s);
+    void println(const char[]);
+    void println(char, int = BYTE);
+    void println(unsigned char, int = BYTE);
+    void println(int, int = DEC);
+    void println(unsigned int, int = DEC);
+    void println(long, int = DEC);
+    void println(unsigned long, int = DEC);
+    void println(double, int = 2);
+    void println(void);
 };
 
 #if defined(UBRRH) || defined(UBRR0H)

Marlin/SdBaseFile.cpp

  * along with the Arduino SdFat Library.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
+
+#define SERIAL MSerial
 #include "SdBaseFile.h"
 //------------------------------------------------------------------------------
 // pointer to cwd directory
   pos->position = curPosition_;
   pos->cluster = curCluster_;
 }
-//------------------------------------------------------------------------------
-/** List directory contents to Serial.
- *
- * \param[in] flags The inclusive OR of
- *
- * LS_DATE - %Print file modification date
- *
- * LS_SIZE - %Print file size.
- *
- * LS_R - Recursive list of subdirectories.
- */
-void SdBaseFile::ls(uint8_t flags) {
-  ls(&MSerial, flags, 0);
-}
+
 //------------------------------------------------------------------------------
 /** List directory contents.
  *
  * \param[in] indent Amount of space before file name. Used for recursive
  * list to indicate subdirectory level.
  */
-void SdBaseFile::ls(Print* pr, uint8_t flags, uint8_t indent) {
+void SdBaseFile::ls(uint8_t flags, uint8_t indent) {
   rewind();
   int8_t status;
-  while ((status = lsPrintNext(pr, flags, indent))) {
+  while ((status = lsPrintNext( flags, indent))) {
     if (status > 1 && (flags & LS_R)) {
       uint16_t index = curPosition()/32 - 1;
       SdBaseFile s;
-      if (s.open(this, index, O_READ)) s.ls(pr, flags, indent + 2);
+      if (s.open(this, index, O_READ)) s.ls( flags, indent + 2);
       seekSet(32 * (index + 1));
     }
   }
 //------------------------------------------------------------------------------
 // saves 32 bytes on stack for ls recursion
 // return 0 - EOF, 1 - normal file, or 2 - directory
-int8_t SdBaseFile::lsPrintNext(Print *pr, uint8_t flags, uint8_t indent) {
+int8_t SdBaseFile::lsPrintNext( uint8_t flags, uint8_t indent) {
   dir_t dir;
   uint8_t w = 0;
 
       && DIR_IS_FILE_OR_SUBDIR(&dir)) break;
   }
   // indent for dir level
-  for (uint8_t i = 0; i < indent; i++) pr->write(' ');
+  for (uint8_t i = 0; i < indent; i++) MSerial.write(' ');
 
   // print name
   for (uint8_t i = 0; i < 11; i++) {
     if (dir.name[i] == ' ')continue;
     if (i == 8) {
-      pr->write('.');
+      MSerial.write('.');
       w++;
     }
-    pr->write(dir.name[i]);
+    MSerial.write(dir.name[i]);
     w++;
   }
   if (DIR_IS_SUBDIR(&dir)) {
-    pr->write('/');
+    MSerial.write('/');
     w++;
   }
   if (flags & (LS_DATE | LS_SIZE)) {
-    while (w++ < 14) pr->write(' ');
+    while (w++ < 14) MSerial.write(' ');
   }
   // print modify date/time if requested
   if (flags & LS_DATE) {
-    pr->write(' ');
-    printFatDate(pr, dir.lastWriteDate);
-    pr->write(' ');
-    printFatTime(pr, dir.lastWriteTime);
+    MSerial.write(' ');
+    printFatDate( dir.lastWriteDate);
+    MSerial.write(' ');
+    printFatTime( dir.lastWriteTime);
   }
   // print size if requested
   if (!DIR_IS_SUBDIR(&dir) && (flags & LS_SIZE)) {
-    pr->write(' ');
-    pr->print(dir.fileSize);
+    MSerial.write(' ');
+    MSerial.print(dir.fileSize);
   }
-  pr->println();
+  MSerial.println();
   return DIR_IS_FILE(&dir) ? 1 : 2;
 }
 //------------------------------------------------------------------------------
   if (c >= 0) setpos(&pos);
   return c;
 }
-//------------------------------------------------------------------------------
-/** %Print the name field of a directory entry in 8.3 format to Serial.
- *
- * \param[in] dir The directory structure containing the name.
- * \param[in] width Blank fill name if length is less than \a width.
- * \param[in] printSlash Print '/' after directory names if true.
- */
-void SdBaseFile::printDirName(const dir_t& dir,
-  uint8_t width, bool printSlash) {
-  printDirName(&MSerial, dir, width, printSlash);
-}
+
 //------------------------------------------------------------------------------
 /** %Print the name field of a directory entry in 8.3 format.
  * \param[in] pr Print stream for output.
  * \param[in] width Blank fill name if length is less than \a width.
  * \param[in] printSlash Print '/' after directory names if true.
  */
-void SdBaseFile::printDirName(Print* pr, const dir_t& dir,
+void SdBaseFile::printDirName(const dir_t& dir,
   uint8_t width, bool printSlash) {
   uint8_t w = 0;
   for (uint8_t i = 0; i < 11; i++) {
     if (dir.name[i] == ' ')continue;
     if (i == 8) {
-      pr->write('.');
+      MSerial.write('.');
       w++;
     }
-    pr->write(dir.name[i]);
+    MSerial.write(dir.name[i]);
     w++;
   }
   if (DIR_IS_SUBDIR(&dir) && printSlash) {
-    pr->write('/');
+    MSerial.write('/');
     w++;
   }
   while (w < width) {
-    pr->write(' ');
+    MSerial.write(' ');
     w++;
   }
 }
 //------------------------------------------------------------------------------
 // print uint8_t with width 2
-static void print2u(Print* pr, uint8_t v) {
-  if (v < 10) pr->write('0');
-  pr->print(v, DEC);
+static void print2u( uint8_t v) {
+  if (v < 10) MSerial.write('0');
+  MSerial.print(v, DEC);
 }
 //------------------------------------------------------------------------------
 /** %Print a directory date field to Serial.
  *
  * \param[in] fatDate The date field from a directory entry.
  */
-void SdBaseFile::printFatDate(uint16_t fatDate) {
-  printFatDate(&MSerial, fatDate);
-}
+
 //------------------------------------------------------------------------------
 /** %Print a directory date field.
  *
  * \param[in] pr Print stream for output.
  * \param[in] fatDate The date field from a directory entry.
  */
-void SdBaseFile::printFatDate(Print* pr, uint16_t fatDate) {
-  pr->print(FAT_YEAR(fatDate));
-  pr->write('-');
-  print2u(pr, FAT_MONTH(fatDate));
-  pr->write('-');
-  print2u(pr, FAT_DAY(fatDate));
-}
-//------------------------------------------------------------------------------
-/** %Print a directory time field to Serial.
- *
- * Format is hh:mm:ss.
- *
- * \param[in] fatTime The time field from a directory entry.
- */
-void SdBaseFile::printFatTime(uint16_t fatTime) {
-  printFatTime(&MSerial, fatTime);
+void SdBaseFile::printFatDate(uint16_t fatDate) {
+  MSerial.print(FAT_YEAR(fatDate));
+  MSerial.write('-');
+  print2u( FAT_MONTH(fatDate));
+  MSerial.write('-');
+  print2u( FAT_DAY(fatDate));
 }
+
 //------------------------------------------------------------------------------
 /** %Print a directory time field.
  *
  * \param[in] pr Print stream for output.
  * \param[in] fatTime The time field from a directory entry.
  */
-void SdBaseFile::printFatTime(Print* pr, uint16_t fatTime) {
-  print2u(pr, FAT_HOUR(fatTime));
-  pr->write(':');
-  print2u(pr, FAT_MINUTE(fatTime));
-  pr->write(':');
-  print2u(pr, FAT_SECOND(fatTime));
+void SdBaseFile::printFatTime( uint16_t fatTime) {
+  print2u( FAT_HOUR(fatTime));
+  MSerial.write(':');
+  print2u( FAT_MINUTE(fatTime));
+  MSerial.write(':');
+  print2u( FAT_SECOND(fatTime));
 }
 //------------------------------------------------------------------------------
 /** Print a file's name to Serial

Marlin/SdBaseFile.h

   bool isRoot() const {
     return type_ == FAT_FILE_TYPE_ROOT_FIXED || type_ == FAT_FILE_TYPE_ROOT32;
   }
-  void ls(Print* pr, uint8_t flags = 0, uint8_t indent = 0);
-  void ls(uint8_t flags = 0);
+  void ls( uint8_t flags = 0, uint8_t indent = 0);
   bool mkdir(SdBaseFile* dir, const char* path, bool pFlag = true);
   // alias for backward compactability
   bool makeDir(SdBaseFile* dir, const char* path) {
   bool openRoot(SdVolume* vol);
   int peek();
   static void printFatDate(uint16_t fatDate);
-  static void printFatDate(Print* pr, uint16_t fatDate);
-  static void printFatTime(uint16_t fatTime);
-  static void printFatTime(Print* pr, uint16_t fatTime);
+  static void printFatTime( uint16_t fatTime);
   bool printName();
   int16_t read();
   int16_t read(void* buf, uint16_t nbyte);
   bool addCluster();
   bool addDirCluster();
   dir_t* cacheDirEntry(uint8_t action);
-  int8_t lsPrintNext(Print *pr, uint8_t flags, uint8_t indent);
+  int8_t lsPrintNext( uint8_t flags, uint8_t indent);
   static bool make83Name(const char* str, uint8_t* name, const char** ptr);
   bool mkdir(SdBaseFile* parent, const uint8_t dname[11]);
   bool open(SdBaseFile* dirFile, const uint8_t dname[11], uint8_t oflag);
   dir_t* readDirCache();
 //------------------------------------------------------------------------------
 // to be deleted
-  static void printDirName(const dir_t& dir,
-    uint8_t width, bool printSlash);
-  static void printDirName(Print* pr, const dir_t& dir,
+  static void printDirName( const dir_t& dir,
     uint8_t width, bool printSlash);
 //------------------------------------------------------------------------------
 // Deprecated functions  - suppress cpplint warnings with NOLINT comment

Marlin/SdFatUtil.cpp

  * \param[in] pr Print object for output.
  * \param[in] str Pointer to string stored in flash memory.
  */
-void SdFatUtil::print_P(Print* pr, PGM_P str) {
-  for (uint8_t c; (c = pgm_read_byte(str)); str++) pr->write(c);
+void SdFatUtil::print_P( PGM_P str) {
+  for (uint8_t c; (c = pgm_read_byte(str)); str++) MSerial.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(Print* pr, PGM_P str) {
-  print_P(pr, str);
-  pr->println();
+void SdFatUtil::println_P( PGM_P str) {
+  print_P( str);
+  MSerial.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(&MSerial, 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(&MSerial, str);
+  println_P( str);
 }

Marlin/SdFatUtil.h

-/* 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/>.
- */
-#ifndef SdFatUtil_h
-#define SdFatUtil_h
-/**
- * \file
- * \brief Useful utility functions.
- */
-#include <avr/pgmspace.h>
-#if ARDUINO < 100
-#define  HardwareSerial_h // trick to disable the standard HWserial
-#include <WProgram.h>
-#include "MarlinSerial.h"
-#else  // ARDUINO
-#include <Arduino.h>
-#endif  // ARDUINO
-/** 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))
-
-namespace SdFatUtil {
-  int FreeRam();
-  void print_P(Print* pr, PGM_P str);
-  void println_P(Print* pr, PGM_P str);
-  void SerialPrint_P(PGM_P str);
-  void SerialPrintln_P(PGM_P str);
-}
-
-using namespace SdFatUtil;  // NOLINT
+/* 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/>.
+ */
+#ifndef SdFatUtil_h
+#define SdFatUtil_h
+/**
+ * \file
+ * \brief Useful utility functions.
+ */
+#include <avr/pgmspace.h>
+#if ARDUINO < 100
+#define  HardwareSerial_h // trick to disable the standard HWserial
+#include <WProgram.h>
+#include "MarlinSerial.h"
+#else  // ARDUINO
+#include <Arduino.h>
+#endif  // ARDUINO
+/** 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))
+
+namespace SdFatUtil {
+  int FreeRam();
+  void print_P( PGM_P str);
+  void println_P( PGM_P str);
+  void SerialPrint_P(PGM_P str);
+  void SerialPrintln_P(PGM_P str);
+}
+
+using namespace SdFatUtil;  // NOLINT
 #endif  // #define SdFatUtil_h