/* An SD card connected via SPI is used for this test. The example uses the SD library, it must be installed first. */ #include #include // set up variables using the SD utility library functions: Sd2Card card; SdVolume volume; SdFile root; const int chipSelect = 9; // P0_3 void setup() { // Open serial communications and wait for port to open: Serial.begin(9600); while (!Serial) { ; // wait for serial port to connect. Needed for native USB port only } Serial.print("\nInitializing SD card..."); // we'll use the initialization code from the utility libraries // since we're just testing if the card is working! if (!card.init(SPI_QUARTER_SPEED, chipSelect)) { Serial.println("initialization failed. Things to check:"); Serial.println("* is a card inserted?"); Serial.println("* is your wiring correct?"); Serial.println("* did you change the chipSelect pin to match your shield or module?"); while (1); } else { Serial.println("Wiring is correct and a card is present."); } // print the type of card Serial.println(); Serial.print("Card 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"); while (1); } Serial.print("Clusters: "); Serial.println(volume.clusterCount()); Serial.print("Blocks x Cluster: "); Serial.println(volume.blocksPerCluster()); Serial.print("Total Blocks: "); Serial.println(volume.blocksPerCluster() * volume.clusterCount()); Serial.println(); // print the type and size of the first FAT-type volume uint32_t volumesize; Serial.print("Volume type is: FAT"); Serial.println(volume.fatType(), DEC); volumesize = volume.blocksPerCluster(); // clusters are collections of blocks volumesize *= volume.clusterCount(); // we'll have a lot of clusters volumesize /= 2; // SD card blocks are always 512 bytes (2 blocks are 1KB) Serial.print("Volume size (Kb): "); Serial.println(volumesize); Serial.print("Volume size (Mb): "); volumesize /= 1024; Serial.println(volumesize); Serial.print("Volume size (Gb): "); Serial.println((float)volumesize / 1024.0); 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) { }