SD card fail of initializing

Question

I have an Arduino Mega and a catalex card reader which yesterday worked, but today I tried another time and the sd card where not detected, I am using the example code from Arduino website for the card info. I have tried conecting the reader to the SPI ports in the middle of the board and it was not solved. Anyone has another idea of what can be failing?

#include <SPI.h>
#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
// MKRZero SD: SDCARD_SS_PIN
const int chipSelect = 10;
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_HALF_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?");
 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);
}
void loop(void) {
}

• Shams M.Monem: When you tried you tried the same SD card you tried it yesterday ?

Answer 1

Add these Two Lines for better initialization of SD card:

void setup{
 pinMode(10, OUTPUT); // change this to 53 on a mega(don't follow this!!)
 digitalWrite(10, HIGH); // Add this line
}

Check this link, may be useful to your current problem.