C++ SdVolume类代码示例

/**
* initialize
* Initialize Writter and SD Card behavior
* @return {void}
*/
bool SDWriter::initialize()
{
	Sd2Card card;
	card.init(SPI_HALF_SPEED, pin);

	SdVolume volume;
  	volume.init(card);
  
  	volumesize = volume.blocksPerCluster() * volume.clusterCount() * 512;

	if (!SD.begin(pin))
		state = false;
	else
		state = true;

	return state;
}

void setup() {
  Serial.begin(BPS_115200);
  PgmPrintln("Type any character to start");
  while (!Serial.available());
  
  // initialize the SD card at SPI_FULL_SPEED for best performance.
  // try SPI_HALF_SPEED if bus errors occur.
  if (!card.init(SPI_FULL_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");
  
  // write files to root if FAT32
  if (volume.fatType() == 32) {
    PgmPrintln("Writing files to root");
    dirAllocTest(root);
  }
  
  // create sub1 and write files
  SdFile sub1;
  if (!sub1.makeDir(&root, "SUB1")) error("makdeDir SUB1 failed");
  PgmPrintln("Writing files to SUB1");
  dirAllocTest(sub1);

  // create sub2 and write files
  SdFile sub2;
  if (!sub2.makeDir(&sub1, "SUB2")) error("makeDir SUB2 failed");
  PgmPrintln("Writing files to SUB2"); 
  dirAllocTest(sub2);
  
  PgmPrintln("Done");
}

int App::run()
{
    if (!card.init(SPI_HALF_SPEED, 4))
    {
        Serial.puts("initialization failed. Things to check:\r\n");
        Serial.puts("* is a card is inserted?\r\n");
        Serial.puts("* Is your wiring correct?\r\n");
        Serial.puts("* did you change the chipSelect pin to match your shield or module?\r\n");
        return 0;
    }
    else
    {
        Serial.puts("Wiring is correct and a card is present.\r\n");
    }

    Serial.puts("\r\nCard type: ");
    switch(card.type())
    {
    case SD_CARD_TYPE_SD1:
        Serial.puts("SD1\r\n");
        break;
    case SD_CARD_TYPE_SD2:
        Serial.puts("SD2\r\n");
        break;
    case SD_CARD_TYPE_SDHC:
        Serial.puts("SDHC\r\n");
        break;
    default:
        Serial.puts("Unknown\r\n");
    }

    if (!volume.init(card))
    {
        Serial.puts("Could not find FAT16/FAT32 partition.\r\n");
        Serial.puts("Make sure you've formatted the card\r\n");
        return 0;
    }

    uint32_t volumesize;
    Serial.printf("\r\nVolume type is FAT%u\r\n", volume.fatType());
    volumesize = volume.blocksPerCluster();
    volumesize *= volume.clusterCount();
    volumesize *= 512;
    Serial.printf("Volume size (bytes): %u\r\n", volumesize);
    volumesize /= 1024;
    Serial.printf("Volume size (Kbytes): %u\r\n");
    volumesize /= 1024;
    Serial.printf("Volume size (Mbytes): %u\r\n");
    Serial.puts("\r\nFiles found on the card (name, date and size in bytes): \r\n");
    root.openRoot(volume);
    root.ls(LS_R | LS_DATE | LS_SIZE, 0, Serial);
    while (true) { }
    return 0;
}

bool FileSystem::initSDCard() {
    boolean status;

    if (root.isOpen())
        root.close();      // allows repeated calls

    // First, detect the card
    status = card.init(pinCS); // Audio shield has SD card SD on pin 10
    if (status) {
        Serial.println("SD card is connected :-)");
    } else {
        Serial.println("SD card is not connected or unusable :-(");
        sdCardInitialized = false;
        return sdCardInitialized;
    }

    // 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");
        sdCardInitialized = false;
        return sdCardInitialized;
    }

    root.openRoot(volume);

    // print the type and size of the first FAT-type volume
    Serial.print("\nVolume type is FAT");
    Serial.println(volume.fatType(), DEC);
    Serial.println();

    float size = volume.blocksPerCluster() * volume.clusterCount();
    size = size * (512.0 / 1e6); // convert blocks to millions of bytes
    Serial.print("File system space is ");
    Serial.print(size);
    Serial.println(" Mbytes.");

    status = SD.begin(pinCS); // Audio shield has SD card CS on pin 10
    if (status) {
        Serial.println("SD library is able to access the filesystem");
    } else {
        Serial.println("SD library can not access the filesystem!");
        Serial.println(
                "Please report this problem, with the make & model of your SD card.");
        Serial.println(
                "  http://forum.pjrc.com/forums/4-Suggestions-amp-Bug-Reports");
    }
    sdCardInitialized = true;
    return sdCardInitialized;
}

int initSDCard(void){
    
  if (!card.init(SPI_HALF_SPEED, SS_CS_Pin))  //Set SCK rate to F_CPU/4 (mode 1)
  {
  	Serial.println("Error Init SD-Card");
  	return SDCARD_ERROR;
  }
  else
  {	 
  	// initialize a FAT volume
  	if (!volume.init(&card))
  	{
  	  	Serial.println("Error Init Volume in SD-Card");
  	  	return SDCARD_ERROR;
	}  	  	
  	else
  	{ 
  		// Open volume
  		if (!root.openRoot(&volume))
  		{
  			Serial.println("Error Open Volume in SD-Card");
  			return SDCARD_ERROR;
		}  	  	
  		else
  		{   
  			return SUCCESS;    			
        } 
    }
  }            			
}    			

/**
 * Function starts the SD card service and makes sure that the appropriate directory
 * structure exists, then creates the file to use for logging data. Data will be logged
 * to a file called fileNamePrefix_0.csv or fileNamePrefix_0.bin (number will be incremented
 * for each new log file)
 *
 * @param chipSelectPin Arduino pin SD card reader CS pin is attached to
 * @param fileNamePrefix string to prefix at beginning of data file
 * @param csvData boolean flag whether we are writing csv data or binary data (used for filename)
 *
 * @return true if successful, false if failed
 */
bool beginDataLog(int chipSelectPin, const char *fileNamePrefix, bool csvData)
{
  bool ret;
  int i = 0;
  int max_len;
  char fileName[19];
  char prefix[8];
  char rootPath[] = "/data";


  if (_output_buffer != NULL) {
    delete []_output_buffer;
  }
  OUTPUT_BUF_SIZE = 512;
  _output_buffer = vol.cacheAddress()->output_buf;

  if (freeMemory() < 400) {
    strcpy_P(_getOutBuf(), sd_card_error);
    Serial.print(_getOutBuf());
    Serial.print(freeMemory());
    Serial.println(", need 400)");
    ret = false;
  } else {
    ret = sd.begin(chipSelectPin, SPI_FULL_SPEED);
  }

  //Filenames need to fit the 8.3 filename convention, so truncate down the
  //given filename if it is too long.
  memcpy(prefix, fileNamePrefix, 7);
  prefix[7] = '\0';

  if (ret) {
    if (!sd.exists(rootPath))
      ret = sd.mkdir(rootPath);
    if (ret) {
      while (true) {
	if (i < 10) {
	  max_len = 7;
	} else if (i < 100) {
	  max_len = 6;
	} else if (i < 1000) {
	  max_len = 5;
	} else {
	  break;
	}

	prefix[max_len - 1] = '\0';
	sprintf(fileName, "%s/%s%d.%s", rootPath, prefix, i,
		csvData ? "csv" : "bin");
	if (!sd.exists(fileName)) {
	  file = sd.open(fileName, FILE_WRITE);
	  break;
	}
	i++;
      }
    }
  }
  return file.isOpen();
}

// ----------------------------------------------------------------------------
//	Scan the SD card and open the volume
//	Set reg[STATUS] to FDC_ST_NOTREADY if no card present
// ----------------------------------------------------------------------------
void scanSD()
{
	if (!card.init(SPI_FULL_SPEED, SD_CHIP_SELECT_PIN))
	{
		Serial.print("Init failed, error:");
		Serial.println(card.errorCode());
		mb8877.reg[STATUS] = FDC_ST_NOTREADY;
		return;
	}

#ifdef SD_DEBUG
	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");
	}
#endif

	if (!volume.init(card)) {
#ifdef SD_DEBUG
		Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
#endif
		mb8877.reg[STATUS] = FDC_ST_NOTREADY;
		return;
	}

#ifdef SD_DEBUG
	// ----- Print the type and size of the first FAT-type volume
	Serial.print("\nVolume type is FAT");
	Serial.println(volume.fatType(), DEC);
	Serial.println();

	long volumesize;
	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);
#endif
	root.openRoot(volume);
	mb8877.reg[STATUS]=0x00;
}

void setup() {
  Serial.begin(115200);
  while (!Serial.available()) SPARK_WLAN_Loop();
  while (Serial.available()) Serial.read();

  // initialize the SD card at SPI_FULL_SPEED for best performance.
  // try SPI_HALF_SPEED if bus errors occur.
  // Initialize HARDWARE SPI with user defined chipSelect
  if (!card.init(SPI_FULL_SPEED, chipSelect)) error("card.init failed");
  
  // Initialize SOFTWARE SPI
  //if (!card.init(mosiPin, misoPin, clockPin, chipSelect)) error("card.init failed");

  // initialize a FAT volume
  if (!volume.init(&card)) error("volume.init failed!");

  Serial.print("Type is FAT");
  Serial.println(volume.fatType(), DEC);

  if (!root.openRoot(&volume)) error("openRoot failed");
}

void printCardInfo() {
    Serial.print(F("Data logging is "));
    if (disableLogging) {
        Serial.println(F("DISABLED"));
    } else {
        Serial.println(F("ENABLED"));
    }
    Serial.println();

    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");
    }

    Serial.print("\nVolume type is FAT");
    Serial.println(volume.fatType(), DEC);

    unsigned long volumesize;
    volumesize = volume.blocksPerCluster();
    volumesize *= volume.clusterCount();
    volumesize /= 2;
    volumesize /= 1024;
    Serial.print("Volume size: ");
    Serial.print(volumesize, DEC);
    Serial.println("MB");

    Serial.println("name\tdate\tsize");
    root.ls(LS_R | LS_DATE | LS_SIZE);
    Serial.println();
}

void setup() {


  Serial.begin(9600);

  pinMode(greenLEDandBEEP, OUTPUT);
  pinMode(redLEDpin, OUTPUT);

  PgmPrint("Free RAM: ");
  Serial.println(FreeRam());  

  pinMode(10, OUTPUT);              
  digitalWrite(10, HIGH);              

  if (!card.init(SPI_HALF_SPEED, 4)) error("card.init failed!");

  if (!volume.init(&card)) error("vol.init failed!");

  PgmPrint("Volume is FAT");
  Serial.println(volume.fatType(),DEC);
  Serial.println();

  if (!root.openRoot(&volume)) error("openRoot failed");

  PgmPrintln("Files found in root:");
  root.ls(LS_DATE | LS_SIZE);
  Serial.println();

  PgmPrintln("Files found in all dirs:");
  root.ls(LS_R);

  Serial.println();
  PgmPrintln("Done");

  Ethernet.begin(mac, ip);
  server.begin();
}

void setup() {
  //Serial.begin(9600);

  PgmPrint("Free RAM: ");
  //Serial.println(FreeRam());  

  // initialize the SD card at SPI_HALF_SPEED to avoid bus errors with
  // breadboards.  use SPI_FULL_SPEED for better performance.
  pinMode(10, OUTPUT);                       // set the SS pin as an output (necessary!)
  digitalWrite(10, HIGH);                    // but turn off the W5100 chip!

  if (!card.init(SPI_HALF_SPEED, 4)) error("card.init failed!");

  // initialize a FAT volume
  if (!volume.init(&card)) error("vol.init failed!");

  PgmPrint("Volume is FAT");
  //Serial.println(volume.fatType(),DEC);
  //Serial.println();

  if (!root.openRoot(&volume)) error("openRoot failed");

  // list file in root with date and size
  PgmPrintln("Files found in root:");
  root.ls(LS_DATE | LS_SIZE);
  //Serial.println();

  // Recursive list of all directories
  PgmPrintln("Files found in all dirs:");
  root.ls(LS_R);

  //Serial.println();
  PgmPrintln("Done");

  // Debugging complete, we start the server!
  Ethernet.begin(mac, ip);
  server.begin();
  
  // Start up the temperature library
  sensorsa.begin();
  sensorsb.begin();
  sensorsc.begin();
  sensorsd.begin();
  
  setTime(0); // start the clock
  time33mins = time60mins = now();

}

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 setupLog() {
    if (!card.init(SPI_HALF_SPEED, SD_CS)) {
        Serial.println(F("No SD card inserted, disabling data logger."));
        disableLogging = true;
    }

    if (!disableLogging && !volume.init(card)) {
        Serial.println(F("Unable to initialize SD volume"));
        disableLogging = true;
    }

    if (!disableLogging && !root.openRoot(volume)) {
        Serial.println(F("Unable to open volume root"));
        disableLogging = true;
    }

#ifdef DEBUG
    printCardInfo();
#endif

    if (!disableLogging) {
        openLog();
    }
}

void setup()
{
  Serial.begin(BPS_115200);
  PgmPrintln("Type any character to start");
  while (!Serial.available());

  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
  uint32_t 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);
}

int infoSDCard(void){
    	
   	Serial.print("SD-Card type is ");
   	switch(card.type()){
    	    case SD_CARD_TYPE_SD1:
      		    Serial.print("SD1");
      			break;
    		case SD_CARD_TYPE_SD2:
      			Serial.print("SD2");
      	    	break;
    		case SD_CARD_TYPE_SDHC:
      			Serial.print("SDHC");
      			break;
    		default:
      		    Serial.println("Unknown");
	}

	cid_t cid;
	if (!card.readCID(&cid))
	{
		Serial.print("\nError Open read CID of SD-Card");
		return SDCARD_ERROR;
	}  	  	

	Serial.print("\nManufacturer ID: ");
	Serial.print(cid.mid, HEX);

	Serial.print("\nOEM/Application ID: ");
	Serial.print(cid.oid[0]);
	Serial.print(cid.oid[1]);
  
	Serial.print("\nProduct name: ");
	for (uint8_t i = 0; i < 5; i++) {
			Serial.print(cid.pnm[i]);
	}
 
	Serial.print("\nProduct revision: ");
	Serial.print(cid.prv_m, DEC);
	Serial.print(".");
	Serial.print(cid.prv_n, DEC);

	Serial.print("\nProduct serial number: ");
	Serial.print(cid.psn);
 
	Serial.print("\nManufacturing date: ");
	Serial.print(cid.mdt_month);
	Serial.print('/');
	Serial.print(2000 + (10*cid.mdt_year_high) + cid.mdt_year_low);

	// print the type and size of the first FAT-type volume
	Serial.print("\nVolume type is FAT");
	Serial.print(volume.fatType(), DEC);
				  				
	uint32_t volumesize, volume_free;
	volumesize = volume.blocksPerCluster();    // clusters are collections of blocks
	volume_free = volume.blocksPerCluster();  
	Serial.print("\nNb blocks per cluster: ");
	Serial.print(volumesize);
	volumesize *= volume.clusterCount();       // we'll have a lot of clusters
    volume_free *= volume.freeClusterCount();
	Serial.print("\nClusters count: ");
	Serial.print(volume.clusterCount());  
	volumesize *= 512;
	volume_free *= 512;
	Serial.print("\nBlock size: 512");        // SD card blocks are always 512 bytes
	Serial.print("\nVolume size (bytes): ");
	Serial.print(volumesize);
	Serial.print(" / Volume free (bytes): ");
	Serial.print(volume_free);	
	Serial.print(" / % free: ");
	Serial.print(100.0*(double)(volume_free)/(double)(volumesize));			
	Serial.print("\nVolume size (Kbytes): ");
	volumesize /= 1024;
	Serial.print(volumesize);
	Serial.print(" / Volume free (Kbytes): ");
	volume_free /= 1024;
	Serial.print(volume_free);				
	Serial.print("\nVolume size (Mbytes): ");
	volumesize /= 1024;
	Serial.print(volumesize);
	Serial.print(" / Volume free (Mbytes): ");
	volume_free /= 1024;
	Serial.print(volume_free);
			
	// list all files in the card with date and size			    
    Serial.println("\nFiles found on the card (name, date and size in bytes): ");
	uint16_t n = root.ls(LS_R | LS_DATE | LS_SIZE);
	Serial.println("");
	Serial.print(n); Serial.println(" files found");
	Serial.println("");
				
    return n;		
}