Added CardInfo example to SD libary examples

tigoe · tigoe · commit fe8af70c61a6 · 2011-03-01T07:13:18.000-05:00
diff --git a/libraries/SD/examples/CardInfo/CardInfo.pde b/libraries/SD/examples/CardInfo/CardInfo.pde
@@ -0,0 +1,108 @@
+/*
+  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
+
+ 
+ created  28 Mar 2011
+ by Limor Fried 
+ */
+ // include the SD library:
+#include <SD.h>
+
+// set up variables using the SD utility library functions:
+Sd2Card card;
+SdVolume volume;
+SdFile root;
+
+// change this to match your SD shield or module;
+// Arduino Ethernet shield: pin 4
+// Adafruit SD shields and modules: pin 10
+// Sparkfun SD shield: pin 8
+const int chipSelect = 8;    
+
+void setup()
+{
+  Serial.begin(9600);
+  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 
+  // (10 on most Arduino boards, 53 on the Mega) must be left as an output 
+  // or the SD library functions will not work. 
+  pinMode(10, OUTPUT);     // change this to 53 on a mega
+
+
+  // we'll use the initialization code from the utility libraries
+  // since we're just testing if the card is working!
+  if (!card.init(SPI_HALF_SPEED, chipSelect)) {
+    Serial.println("initialization failed. Things to check:");
+    Serial.println("* is a card is inserted?");
+    Serial.println("* Is your wiring correct?");
+    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."); 
+  }
+
+  // print the type of card
+  Serial.print("\nCard type: ");
+  switch(card.type()) {
+    case SD_CARD_TYPE_SD1:
+      Serial.println("SD1");
+      break;
+    case SD_CARD_TYPE_SD2:
+      Serial.println("SD2");
+      break;
+    case SD_CARD_TYPE_SDHC:
+      Serial.println("SDHC");
+      break;
+    default:
+      Serial.println("Unknown");
+  }
+
+  // Now we will try to open the 'volume'/'partition' - it should be FAT16 or FAT32
+  if (!volume.init(card)) {
+    Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
+    return;
+  }
+
+
+  // print the type and size of the first FAT-type volume
+  long volumesize;
+  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
+  Serial.print("Volume size (bytes): ");
+  Serial.println(volumesize);
+  Serial.print("Volume size (Kbytes): ");
+  volumesize /= 1024;
+  Serial.println(volumesize);
+  Serial.print("Volume size (Mbytes): ");
+  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) {
+  
+}
