Backported SD library from 1.5.x

libraries/SD/SD.cpp

@@ -550,9 +550,9 @@ boolean SDClass::mkdir(char *filepath) {
 boolean SDClass::rmdir(char *filepath) {
   /*
   
-    Makes a single directory or a heirarchy of directories.
+    Remove a single directory or a heirarchy of directories.
 
-    A rough equivalent to `mkdir -p`.
+    A rough equivalent to `rm -rf`.
   
    */
   return walkPath(filepath, root, callback_rmdir);

libraries/SD/examples/CardInfo/CardInfo.ino

@@ -1,25 +1,26 @@
 /*
-  SD card test 
+  SD card test
-   
+
  This example shows how use the utility libraries on which the'
  SD library is based in order to get info about your SD card.
  Very useful for testing a card when you're not sure whether its working or not.
- 	
+
  The circuit:
   * SD card attached to SPI bus as follows:
  ** MOSI - pin 11 on Arduino Uno/Duemilanove/Diecimila
  ** MISO - pin 12 on Arduino Uno/Duemilanove/Diecimila
  ** CLK - pin 13 on Arduino Uno/Duemilanove/Diecimila
- ** CS - depends on your SD card shield or module. 
+ ** CS - depends on your SD card shield or module.
  		Pin 4 used here for consistency with other Arduino examples
 
- 
+
  created  28 Mar 2011
- by Limor Fried 
+ by Limor Fried
  modified 9 Apr 2012
  by Tom Igoe
  */
- // include the SD library:
+// include the SD library:
+#include <SPI.h>
 #include <SD.h>
 
 // set up variables using the SD utility library functions:
@@ -31,22 +32,22 @@ SdFile root;
 // Arduino Ethernet shield: pin 4
 // Adafruit SD shields and modules: pin 10
 // Sparkfun SD shield: pin 8
-const int chipSelect = 4;    
+const int chipSelect = 4;
 
 void setup()
 {
- // Open serial communications and wait for port to open:
+  // Open serial communications and wait for port to open:
   Serial.begin(9600);
-   while (!Serial) {
+  while (!Serial) {
     ; // wait for serial port to connect. Needed for Leonardo only
   }
 
 
   Serial.print("\nInitializing SD card...");
   // On the Ethernet Shield, CS is pin 4. It's set as an output by default.
-  // Note that even if it's not used as the CS pin, the hardware SS pin 
+  // Note that even if it's not used as the CS pin, the hardware SS pin
-  // (10 on most Arduino boards, 53 on the Mega) must be left as an output 
+  // (10 on most Arduino boards, 53 on the Mega) must be left as an output
-  // or the SD library functions will not work. 
+  // or the SD library functions will not work.
   pinMode(10, OUTPUT);     // change this to 53 on a mega
 
 
@@ -59,12 +60,12 @@ void setup()
     Serial.println("* did you change the chipSelect pin to match your shield or module?");
     return;
   } else {
-   Serial.println("Wiring is correct and a card is present."); 
+    Serial.println("Wiring is correct and a card is present.");
   }
 
   // print the type of card
   Serial.print("\nCard type: ");
-  switch(card.type()) {
+  switch (card.type()) {
     case SD_CARD_TYPE_SD1:
       Serial.println("SD1");
       break;
@@ -90,7 +91,7 @@ void setup()
   Serial.print("\nVolume type is FAT");
   Serial.println(volume.fatType(), DEC);
   Serial.println();
-  
+
   volumesize = volume.blocksPerCluster();    // clusters are collections of blocks
   volumesize *= volume.clusterCount();       // we'll have a lot of clusters
   volumesize *= 512;                            // SD card blocks are always 512 bytes
@@ -103,15 +104,15 @@ void setup()
   volumesize /= 1024;
   Serial.println(volumesize);
 
-  
+
   Serial.println("\nFiles found on the card (name, date and size in bytes): ");
   root.openRoot(volume);
-  
+
   // list all files in the card with date and size
   root.ls(LS_R | LS_DATE | LS_SIZE);
 }
 
 
 void loop(void) {
-  
+
 }

libraries/SD/examples/Datalogger/Datalogger.ino

@@ -1,9 +1,9 @@
 /*
   SD card datalogger
- 
+
- This example shows how to log data from three analog sensors 
+ This example shows how to log data from three analog sensors
  to an SD card using the SD library.
- 	
+
  The circuit:
  * analog sensors on analog ins 0, 1, and 2
  * SD card attached to SPI bus as follows:
@@ -11,15 +11,16 @@
  ** MISO - pin 12
  ** CLK - pin 13
  ** CS - pin 4
- 
+
  created  24 Nov 2010
  modified 9 Apr 2012
  by Tom Igoe
- 
+
  This example code is in the public domain.
- 	 
+
  */
 
+#include <SPI.h>
 #include <SD.h>
 
 // On the Ethernet Shield, CS is pin 4. Note that even if it's not
@@ -30,9 +31,9 @@ const int chipSelect = 4;
 
 void setup()
 {
- // Open serial communications and wait for port to open:
+  // Open serial communications and wait for port to open:
   Serial.begin(9600);
-   while (!Serial) {
+  while (!Serial) {
     ; // wait for serial port to connect. Needed for Leonardo only
   }
 
@@ -41,7 +42,7 @@ void setup()
   // make sure that the default chip select pin is set to
   // output, even if you don't use it:
   pinMode(10, OUTPUT);
-  
+
   // see if the card is present and can be initialized:
   if (!SD.begin(chipSelect)) {
     Serial.println("Card failed, or not present");
@@ -61,7 +62,7 @@ void loop()
     int sensor = analogRead(analogPin);
     dataString += String(sensor);
     if (analogPin < 2) {
-      dataString += ","; 
+      dataString += ",";
     }
   }
 
@@ -75,11 +76,11 @@ void loop()
     dataFile.close();
     // print to the serial port too:
     Serial.println(dataString);
-  }  
+  }
   // if the file isn't open, pop up an error:
   else {
     Serial.println("error opening datalog.txt");
-  } 
+  }
 }
 
 

libraries/SD/examples/DumpFile/DumpFile.ino

@@ -1,25 +1,26 @@
 /*
   SD card file dump
- 
+
  This example shows how to read a file from the SD card using the
  SD library and send it over the serial port.
- 	
+
  The circuit:
  * SD card attached to SPI bus as follows:
  ** MOSI - pin 11
  ** MISO - pin 12
  ** CLK - pin 13
  ** CS - pin 4
- 
+
  created  22 December 2010
  by Limor Fried
  modified 9 Apr 2012
  by Tom Igoe
- 
+
  This example code is in the public domain.
- 	 
+
  */
 
+#include <SPI.h>
 #include <SD.h>
 
 // On the Ethernet Shield, CS is pin 4. Note that even if it's not
@@ -30,9 +31,9 @@ const int chipSelect = 4;
 
 void setup()
 {
- // Open serial communications and wait for port to open:
+  // Open serial communications and wait for port to open:
   Serial.begin(9600);
-   while (!Serial) {
+  while (!Serial) {
     ; // wait for serial port to connect. Needed for Leonardo only
   }
 
@@ -41,7 +42,7 @@ void setup()
   // make sure that the default chip select pin is set to
   // output, even if you don't use it:
   pinMode(10, OUTPUT);
-  
+
   // see if the card is present and can be initialized:
   if (!SD.begin(chipSelect)) {
     Serial.println("Card failed, or not present");
@@ -49,7 +50,7 @@ void setup()
     return;
   }
   Serial.println("card initialized.");
-  
+
   // open the file. note that only one file can be open at a time,
   // so you have to close this one before opening another.
   File dataFile = SD.open("datalog.txt");
@@ -60,11 +61,11 @@ void setup()
       Serial.write(dataFile.read());
     }
     dataFile.close();
-  }  
+  }
   // if the file isn't open, pop up an error:
   else {
     Serial.println("error opening datalog.txt");
-  } 
+  }
 }
 
 void loop()

libraries/SD/examples/Files/Files.ino

@@ -1,40 +1,41 @@
 /*
   SD card basic file example
- 
+
- This example shows how to create and destroy an SD card file 	
+ This example shows how to create and destroy an SD card file
  The circuit:
  * SD card attached to SPI bus as follows:
  ** MOSI - pin 11
  ** MISO - pin 12
  ** CLK - pin 13
  ** CS - pin 4
- 
+
  created   Nov 2010
  by David A. Mellis
  modified 9 Apr 2012
  by Tom Igoe
- 
+
  This example code is in the public domain.
- 	 
+
  */
+#include <SPI.h>
 #include <SD.h>
 
 File myFile;
 
 void setup()
 {
- // Open serial communications and wait for port to open:
+  // Open serial communications and wait for port to open:
   Serial.begin(9600);
-   while (!Serial) {
+  while (!Serial) {
     ; // wait for serial port to connect. Needed for Leonardo only
   }
 
 
   Serial.print("Initializing SD card...");
   // On the Ethernet Shield, CS is pin 4. It's set as an output by default.
-  // Note that even if it's not used as the CS pin, the hardware SS pin 
+  // Note that even if it's not used as the CS pin, the hardware SS pin
-  // (10 on most Arduino boards, 53 on the Mega) must be left as an output 
+  // (10 on most Arduino boards, 53 on the Mega) must be left as an output
-  // or the SD library functions will not work. 
+  // or the SD library functions will not work.
   pinMode(10, OUTPUT);
 
   if (!SD.begin(4)) {
@@ -55,23 +56,23 @@ void setup()
   myFile = SD.open("example.txt", FILE_WRITE);
   myFile.close();
 
-  // Check to see if the file exists: 
+  // Check to see if the file exists:
   if (SD.exists("example.txt")) {
     Serial.println("example.txt exists.");
   }
   else {
-    Serial.println("example.txt doesn't exist.");  
+    Serial.println("example.txt doesn't exist.");
   }
 
   // delete the file:
   Serial.println("Removing example.txt...");
   SD.remove("example.txt");
 
-  if (SD.exists("example.txt")){ 
+  if (SD.exists("example.txt")) {
     Serial.println("example.txt exists.");
   }
   else {
-    Serial.println("example.txt doesn't exist.");  
+    Serial.println("example.txt doesn't exist.");
   }
 }
 

libraries/SD/examples/ReadWrite/ReadWrite.ino

@@ -1,85 +1,86 @@
 /*
   SD card read/write
- 
+
- This example shows how to read and write data to and from an SD card file 	
+ This example shows how to read and write data to and from an SD card file
  The circuit:
  * SD card attached to SPI bus as follows:
  ** MOSI - pin 11
  ** MISO - pin 12
  ** CLK - pin 13
  ** CS - pin 4
- 
+
  created   Nov 2010
  by David A. Mellis
  modified 9 Apr 2012
  by Tom Igoe
- 
+
  This example code is in the public domain.
- 	 
+
  */
- 
+
+#include <SPI.h>
 #include <SD.h>
 
 File myFile;
 
 void setup()
 {
- // Open serial communications and wait for port to open:
+  // Open serial communications and wait for port to open:
   Serial.begin(9600);
-   while (!Serial) {
+  while (!Serial) {
     ; // wait for serial port to connect. Needed for Leonardo only
   }
 
 
   Serial.print("Initializing SD card...");
   // On the Ethernet Shield, CS is pin 4. It's set as an output by default.
-  // Note that even if it's not used as the CS pin, the hardware SS pin 
+  // Note that even if it's not used as the CS pin, the hardware SS pin
-  // (10 on most Arduino boards, 53 on the Mega) must be left as an output 
+  // (10 on most Arduino boards, 53 on the Mega) must be left as an output
-  // or the SD library functions will not work. 
+  // or the SD library functions will not work.
-   pinMode(10, OUTPUT);
+  pinMode(10, OUTPUT);
-   
+
   if (!SD.begin(4)) {
     Serial.println("initialization failed!");
     return;
   }
   Serial.println("initialization done.");
-  
+
   // open the file. note that only one file can be open at a time,
   // so you have to close this one before opening another.
   myFile = SD.open("test.txt", FILE_WRITE);
-  
+
   // if the file opened okay, write to it:
   if (myFile) {
     Serial.print("Writing to test.txt...");
     myFile.println("testing 1, 2, 3.");
-	// close the file:
+    // close the file:
     myFile.close();
     Serial.println("done.");
   } else {
     // if the file didn't open, print an error:
     Serial.println("error opening test.txt");
   }
-  
+
   // re-open the file for reading:
   myFile = SD.open("test.txt");
   if (myFile) {
     Serial.println("test.txt:");
-    
+
     // read from the file until there's nothing else in it:
     while (myFile.available()) {
-    	Serial.write(myFile.read());
+      Serial.write(myFile.read());
     }
     // close the file:
     myFile.close();
   } else {
-  	// if the file didn't open, print an error:
+    // if the file didn't open, print an error:
     Serial.println("error opening test.txt");
   }
 }
 
 void loop()
 {
-	// nothing happens after setup
+  // nothing happens after setup
 }
 
 

libraries/SD/examples/listfiles/listfiles.ino

@@ -10,7 +10,7 @@
  ** MISO - pin 12
  ** CLK - pin 13
  ** CS - pin 4
- 
+
  created   Nov 2010
  by David A. Mellis
  modified 9 Apr 2012
@@ -19,8 +19,9 @@
  by Scott Fitzgerald
  
  This example code is in the public domain.
- 	 
+
  */
+#include <SPI.h>
 #include <SD.h>
 
 File root;
@@ -29,15 +30,15 @@ void setup()
 {
   // Open serial communications and wait for port to open:
   Serial.begin(9600);
-   while (!Serial) {
+  while (!Serial) {
     ; // wait for serial port to connect. Needed for Leonardo only
   }
 
   Serial.print("Initializing SD card...");
   // On the Ethernet Shield, CS is pin 4. It's set as an output by default.
-  // Note that even if it's not used as the CS pin, the hardware SS pin 
+  // Note that even if it's not used as the CS pin, the hardware SS pin
-  // (10 on most Arduino boards, 53 on the Mega) must be left as an output 
+  // (10 on most Arduino boards, 53 on the Mega) must be left as an output
-  // or the SD library functions will not work. 
+  // or the SD library functions will not work.
   pinMode(10, OUTPUT);
 
   if (!SD.begin(4)) {
@@ -47,9 +48,9 @@ void setup()
   Serial.println("initialization done.");
 
   root = SD.open("/");
-  
+
   printDirectory(root, 0);
-  
+
   Serial.println("done!");
 }
 

libraries/SD/utility/FatStructs.h

@@ -90,7 +90,7 @@ struct partitionTable {
   uint32_t firstSector;
            /** Length of the partition, in blocks. */
   uint32_t totalSectors;
-};
+} __attribute__((packed));
 /** Type name for partitionTable */
 typedef struct partitionTable part_t;
 //------------------------------------------------------------------------------
@@ -114,7 +114,7 @@ struct masterBootRecord {
   uint8_t  mbrSig0;
            /** Second MBR signature byte. Must be 0XAA */
   uint8_t  mbrSig1;
-};
+} __attribute__((packed));
 /** Type name for masterBootRecord */
 typedef struct masterBootRecord mbr_t;
 //------------------------------------------------------------------------------
@@ -236,7 +236,7 @@ struct biosParmBlock {
            * should always set all of the bytes of this field to 0.
            */
   uint8_t  fat32Reserved[12];
-};
+} __attribute__((packed));
 /** Type name for biosParmBlock */
 typedef struct biosParmBlock bpb_t;
 //------------------------------------------------------------------------------
@@ -271,7 +271,7 @@ struct fat32BootSector {
   uint8_t  bootSectorSig0;
            /** must be 0XAA */
   uint8_t  bootSectorSig1;
-};
+} __attribute__((packed));
 //------------------------------------------------------------------------------
 // End Of Chain values for FAT entries
 /** FAT16 end of chain value used by Microsoft. */
@@ -366,7 +366,7 @@ struct directoryEntry {
   uint16_t firstClusterLow;
            /** 32-bit unsigned holding this file's size in bytes. */
   uint32_t fileSize;
-};
+} __attribute__((packed));
 //------------------------------------------------------------------------------
 // Definitions for directory entries
 //

libraries/SD/utility/Sd2Card.cpp

@@ -17,20 +17,34 @@
  * along with the Arduino Sd2Card Library.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
+#define USE_SPI_LIB
 #include <Arduino.h>
 #include "Sd2Card.h"
 //------------------------------------------------------------------------------
 #ifndef SOFTWARE_SPI
+#ifdef USE_SPI_LIB
+#include <SPI.h>
+static SPISettings settings;
+#endif
 // functions for hardware SPI
 /** Send a byte to the card */
 static void spiSend(uint8_t b) {
+#ifndef USE_SPI_LIB
   SPDR = b;
-  while (!(SPSR & (1 << SPIF)));
+  while (!(SPSR & (1 << SPIF)))
+    ;
+#else
+  SPI.transfer(b);
+#endif
 }
 /** Receive a byte from the card */
 static  uint8_t spiRec(void) {
+#ifndef USE_SPI_LIB
   spiSend(0XFF);
   return SPDR;
+#else
+  return SPI.transfer(0xFF);
+#endif
 }
 #else  // SOFTWARE_SPI
 //------------------------------------------------------------------------------
@@ -112,7 +126,8 @@ uint8_t Sd2Card::cardCommand(uint8_t cmd, uint32_t arg) {
   spiSend(crc);
 
   // wait for response
-  for (uint8_t i = 0; ((status_ = spiRec()) & 0X80) && i != 0XFF; i++);
+  for (uint8_t i = 0; ((status_ = spiRec()) & 0X80) && i != 0XFF; i++)
+    ;
   return status_;
 }
 //------------------------------------------------------------------------------
@@ -144,9 +159,15 @@ uint32_t Sd2Card::cardSize(void) {
 //------------------------------------------------------------------------------
 void Sd2Card::chipSelectHigh(void) {
   digitalWrite(chipSelectPin_, HIGH);
+#ifdef USE_SPI_LIB
+  SPI.endTransaction();
+#endif
 }
 //------------------------------------------------------------------------------
 void Sd2Card::chipSelectLow(void) {
+#ifdef USE_SPI_LIB
+  SPI.beginTransaction(settings);
+#endif
   digitalWrite(chipSelectPin_, LOW);
 }
 //------------------------------------------------------------------------------
@@ -219,12 +240,15 @@ uint8_t Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
 
   // set pin modes
   pinMode(chipSelectPin_, OUTPUT);
-  chipSelectHigh();
+  digitalWrite(chipSelectPin_, HIGH);
+#ifndef USE_SPI_LIB
   pinMode(SPI_MISO_PIN, INPUT);
   pinMode(SPI_MOSI_PIN, OUTPUT);
   pinMode(SPI_SCK_PIN, OUTPUT);
+#endif
 
 #ifndef SOFTWARE_SPI
+#ifndef USE_SPI_LIB
   // SS must be in output mode even it is not chip select
   pinMode(SS_PIN, OUTPUT);
   digitalWrite(SS_PIN, HIGH); // disable any SPI device using hardware SS pin
@@ -232,10 +256,20 @@ uint8_t Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
   SPCR = (1 << SPE) | (1 << MSTR) | (1 << SPR1) | (1 << SPR0);
   // clear double speed
   SPSR &= ~(1 << SPI2X);
-#endif  // SOFTWARE_SPI
+#else // USE_SPI_LIB
+  SPI.begin();
+  settings = SPISettings(250000, MSBFIRST, SPI_MODE0);
+#endif // USE_SPI_LIB
+#endif // SOFTWARE_SPI
 
   // must supply min of 74 clock cycles with CS high.
+#ifdef USE_SPI_LIB
+  SPI.beginTransaction(settings);
+#endif
   for (uint8_t i = 0; i < 10; i++) spiSend(0XFF);
+#ifdef USE_SPI_LIB
+  SPI.endTransaction();
+#endif
 
   chipSelectLow();
 
@@ -360,18 +394,21 @@ uint8_t Sd2Card::readData(uint32_t block,
 
   // skip data before offset
   for (;offset_ < offset; offset_++) {
-    while (!(SPSR & (1 << SPIF)));
+    while (!(SPSR & (1 << SPIF)))
+      ;
     SPDR = 0XFF;
   }
   // transfer data
   n = count - 1;
   for (uint16_t i = 0; i < n; i++) {
-    while (!(SPSR & (1 << SPIF)));
+    while (!(SPSR & (1 << SPIF)))
+      ;
     dst[i] = SPDR;
     SPDR = 0XFF;
   }
   // wait for last byte
-  while (!(SPSR & (1 << SPIF)));
+  while (!(SPSR & (1 << SPIF)))
+    ;
   dst[n] = SPDR;
 
 #else  // OPTIMIZE_HARDWARE_SPI
@@ -406,11 +443,13 @@ void Sd2Card::readEnd(void) {
     // optimize skip for hardware
     SPDR = 0XFF;
     while (offset_++ < 513) {
-      while (!(SPSR & (1 << SPIF)));
+      while (!(SPSR & (1 << SPIF)))
+        ;
       SPDR = 0XFF;
     }
     // wait for last crc byte
-    while (!(SPSR & (1 << SPIF)));
+    while (!(SPSR & (1 << SPIF)))
+      ;
 #else  // OPTIMIZE_HARDWARE_SPI
     while (offset_++ < 514) spiRec();
 #endif  // OPTIMIZE_HARDWARE_SPI
@@ -456,6 +495,7 @@ uint8_t Sd2Card::setSckRate(uint8_t sckRateID) {
     error(SD_CARD_ERROR_SCK_RATE);
     return false;
   }
+#ifndef USE_SPI_LIB
   // see avr processor datasheet for SPI register bit definitions
   if ((sckRateID & 1) || sckRateID == 6) {
     SPSR &= ~(1 << SPI2X);
@@ -465,6 +505,17 @@ uint8_t Sd2Card::setSckRate(uint8_t sckRateID) {
   SPCR &= ~((1 <<SPR1) | (1 << SPR0));
   SPCR |= (sckRateID & 4 ? (1 << SPR1) : 0)
     | (sckRateID & 2 ? (1 << SPR0) : 0);
+#else // USE_SPI_LIB
+  switch (sckRateID) {
+    case 0:  settings = SPISettings(25000000, MSBFIRST, SPI_MODE0); break;
+    case 1:  settings = SPISettings(4000000, MSBFIRST, SPI_MODE0); break;
+    case 2:  settings = SPISettings(2000000, MSBFIRST, SPI_MODE0); break;
+    case 3:  settings = SPISettings(1000000, MSBFIRST, SPI_MODE0); break;
+    case 4:  settings = SPISettings(500000, MSBFIRST, SPI_MODE0); break;
+    case 5:  settings = SPISettings(250000, MSBFIRST, SPI_MODE0); break;
+    default: settings = SPISettings(125000, MSBFIRST, SPI_MODE0);
+  }
+#endif // USE_SPI_LIB
   return true;
 }
 //------------------------------------------------------------------------------
@@ -561,14 +612,17 @@ uint8_t Sd2Card::writeData(uint8_t token, const uint8_t* src) {
 
   // send two byte per iteration
   for (uint16_t i = 0; i < 512; i += 2) {
-    while (!(SPSR & (1 << SPIF)));
+    while (!(SPSR & (1 << SPIF)))
+      ;
     SPDR = src[i];
-    while (!(SPSR & (1 << SPIF)));
+    while (!(SPSR & (1 << SPIF)))
+      ;
     SPDR = src[i+1];
   }
 
   // wait for last data byte
-  while (!(SPSR & (1 << SPIF)));
+  while (!(SPSR & (1 << SPIF)))
+    ;
 
 #else  // OPTIMIZE_HARDWARE_SPI
   spiSend(token);

libraries/SD/utility/Sd2Card.h

@@ -31,6 +31,11 @@ uint8_t const SPI_FULL_SPEED = 0;
 uint8_t const SPI_HALF_SPEED = 1;
 /** Set SCK rate to F_CPU/8. Sd2Card::setSckRate(). */
 uint8_t const SPI_QUARTER_SPEED = 2;
+/**
+ * USE_SPI_LIB: if set, use the SPI library bundled with Arduino IDE, otherwise
+ * run with a standalone driver for AVR.
+ */
+#define USE_SPI_LIB
 /**
  * Define MEGA_SOFT_SPI non-zero to use software SPI on Mega Arduinos.
  * Pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
@@ -66,7 +71,9 @@ uint8_t const  SPI_MISO_PIN = MISO_PIN;
 /** SPI Clock pin */
 uint8_t const  SPI_SCK_PIN = SCK_PIN;
 /** optimize loops for hardware SPI */
+#ifndef USE_SPI_LIB
 #define OPTIMIZE_HARDWARE_SPI
+#endif
 
 #else  // SOFTWARE_SPI
 // define software SPI pins so Mega can use unmodified GPS Shield

libraries/SD/utility/Sd2PinMap.h

@@ -17,6 +17,22 @@
  * along with the Arduino SdFat Library.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
+#if defined(__arm__) // Arduino Due Board follows
+
+#ifndef Sd2PinMap_h
+#define Sd2PinMap_h
+
+#include <Arduino.h>
+
+uint8_t const SS_PIN = SS;
+uint8_t const MOSI_PIN = MOSI;
+uint8_t const MISO_PIN = MISO;
+uint8_t const SCK_PIN = SCK;
+
+#endif // Sd2PinMap_h
+
+#elif defined(__AVR__) // Other AVR based Boards follows
+
 // Warning this file was generated by a program.
 #ifndef Sd2PinMap_h
 #define Sd2PinMap_h
@@ -350,3 +366,7 @@ static inline __attribute__((always_inline))
   }
 }
 #endif  // Sd2PinMap_h
+
+#else
+#error Architecture or board not supported.
+#endif

libraries/SD/utility/SdFat.h

@@ -23,7 +23,9 @@
  * \file
  * SdFile and SdVolume classes
  */
+#ifdef __AVR__
 #include <avr/pgmspace.h>
+#endif
 #include "Sd2Card.h"
 #include "FatStructs.h"
 #include "Print.h"
@@ -286,8 +288,10 @@ class SdFile : public Print {
   size_t write(uint8_t b);
   size_t write(const void* buf, uint16_t nbyte);
   size_t write(const char* str);
+#ifdef __AVR__
   void write_P(PGM_P str);
   void writeln_P(PGM_P str);
+#endif
 //------------------------------------------------------------------------------
 #if ALLOW_DEPRECATED_FUNCTIONS
 // Deprecated functions  - suppress cpplint warnings with NOLINT comment

libraries/SD/utility/SdFatUtil.h

@@ -24,12 +24,14 @@
  * Useful utility functions.
  */
 #include <Arduino.h>
+#ifdef __AVR__
 #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. */
+#endif
 #define NOINLINE __attribute__((noinline,unused))
 #define UNUSEDOK __attribute__((unused))
 //------------------------------------------------------------------------------
@@ -49,6 +51,7 @@ static UNUSEDOK int FreeRam(void) {
   }
   return free_memory;
 }
+#ifdef __AVR__
 //------------------------------------------------------------------------------
 /**
  * %Print a string in flash memory to the serial port.
@@ -68,4 +71,5 @@ static NOINLINE void SerialPrintln_P(PGM_P str) {
   SerialPrint_P(str);
   Serial.println();
 }
+#endif  // __AVR__
 #endif  // #define SdFatUtil_h

libraries/SD/utility/SdFile.cpp

@@ -17,8 +17,10 @@
  * along with the Arduino SdFat Library.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
-#include <SdFat.h>
+#include "SdFat.h"
+#ifdef __AVR__
 #include <avr/pgmspace.h>
+#endif
 #include <Arduino.h>
 //------------------------------------------------------------------------------
 // callback function for date/time
@@ -256,9 +258,15 @@ uint8_t SdFile::make83Name(const char* str, uint8_t* name) {
       i = 8;   // place for extension
     } else {
       // illegal FAT characters
-      PGM_P p = PSTR("|<>^+=?/[];,*\"\\");
       uint8_t b;
+#if defined(__AVR__)
+      PGM_P p = PSTR("|<>^+=?/[];,*\"\\");
       while ((b = pgm_read_byte(p++))) if (b == c) return false;
+#elif defined(__arm__)
+      const uint8_t valid[] = "|<>^+=?/[];,*\"\\";
+      const uint8_t *p = valid;
+      while ((b = *p++)) if (b == c) return false;
+#endif
       // check size and only allow ASCII printable characters
       if (i > n || c < 0X21 || c > 0X7E)return false;
       // only upper case allowed in 8.3 names - convert lower to upper
@@ -1232,6 +1240,7 @@ size_t SdFile::write(uint8_t b) {
 size_t SdFile::write(const char* str) {
   return write(str, strlen(str));
 }
+#ifdef __AVR__
 //------------------------------------------------------------------------------
 /**
  * Write a PROGMEM string to a file.
@@ -1251,3 +1260,4 @@ void SdFile::writeln_P(PGM_P str) {
   write_P(str);
   println();
 }
+#endif

libraries/SD/utility/SdVolume.cpp

@@ -17,7 +17,7 @@
  * along with the Arduino SdFat Library.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
-#include <SdFat.h>
+#include "SdFat.h"
 //------------------------------------------------------------------------------
 // raw block cache
 // init cacheBlockNumber_to invalid SD block number