Combining MemoryCard and SdFat libraries into SD library.

Defaulting to CS pin 4 (for Arduino Ethernet Shield).  Holding the SS pin high (for disabling W5100 on the Ethernet Shield).

libraries/SD/utility/examples/SdFatRead/SdFatRead.pde

@@ -0,0 +1,71 @@
+/*
+ * This sketch reads and prints the file
+ * PRINT00.TXT created by SdFatPrint.pde or
+ * WRITE00.TXT created by SdFatWrite.pde
+ */
+#include <SdFat.h>
+#include <SdFatUtil.h>
+
+Sd2Card card;
+SdVolume volume;
+SdFile root;
+SdFile file;
+
+// store error strings in flash to save RAM
+#define error(s) error_P(PSTR(s))
+
+void error_P(const char* str) {
+  PgmPrint("error: ");
+  SerialPrintln_P(str);
+  if (card.errorCode()) {
+    PgmPrint("SD error: ");
+    Serial.print(card.errorCode(), HEX);
+    Serial.print(',');
+    Serial.println(card.errorData(), HEX);
+  }
+  while(1);
+}
+
+void setup(void) {
+  Serial.begin(9600);
+  Serial.println();
+  Serial.println("type any character to start");
+  while (!Serial.available());
+  Serial.println();
+  
+  // initialize the SD card at SPI_HALF_SPEED to avoid bus errors with
+  // breadboards.  use SPI_FULL_SPEED for better performance.
+  if (!card.init(SPI_HALF_SPEED)) error("card.init failed");
+  
+  // initialize a FAT volume
+  if (!volume.init(&card)) error("volume.init failed");
+  
+  // open the root directory
+  if (!root.openRoot(&volume)) error("openRoot failed");
+  
+  // open a file
+  if (file.open(&root, "PRINT00.TXT", O_READ)) {
+    Serial.println("Opened PRINT00.TXT");
+  }
+  else if (file.open(&root, "WRITE00.TXT", O_READ)) {
+    Serial.println("Opened WRITE00.TXT");    
+  }
+  else{
+    error("file.open failed");
+  }
+  Serial.println();
+  
+  // copy file to serial port
+  int16_t n;
+  uint8_t buf[7];// nothing special about 7, just a lucky number.
+  while ((n = file.read(buf, sizeof(buf))) > 0) {
+    for (uint8_t i = 0; i < n; i++) Serial.print(buf[i]);
+  }
+  /* easier way
+  int16_t c;
+  while ((c = file.read()) > 0) Serial.print((char)c);
+  */
+  Serial.println("\nDone");
+}
+
+void loop(void) {}