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M4 metro grand central Sd card?
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Please be positive and constructive with your questions and comments.

M4 metro grand central Sd card?

by josephchrzempiec on Tue May 18, 2021 4:01 am

hello I'm trying to get the Sd card working on the m4 metro board that comes with it. I'm just using the standard arduino SD card library. But for some odd reason I can not get it to work. Can someone help me to figure this out. I have pointed the SS pin to 53 but no luck. here is the example code below.
The Error message comes up saying


Initializing SD card...initialization failed. Things to check:
* is a card inserted?
* is your wiring correct?
* did you change the chipSelect pin to match your shield or module?


Code: Select all | TOGGLE FULL SIZE
// include the SD library:
#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 = 53;

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?");
    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) {
}



Joseph

josephchrzempiec
 
Posts: 74
Joined: Tue May 12, 2015 4:34 am

Re: M4 metro grand central Sd card?

by dastels on Tue May 18, 2021 9:10 am

Have you tried using SDCARD_SS_PIN as the chip select?

Dave

dastels
 
Posts: 6872
Joined: Tue Oct 20, 2015 3:22 pm

Re: M4 metro grand central Sd card?

by josephchrzempiec on Tue May 18, 2021 9:23 pm

Hello, I didn't know what is the SDCARD_SS_PIN. So i looked it up and litterly I'm surpose to put in SDCARD_SS_PIN and not a number like D4 or 4 but i have to put in SDCARD_SS_PIN. So i did and i was able to read and write to the SD card. Thank you very much for the help.


Joseph

josephchrzempiec
 
Posts: 74
Joined: Tue May 12, 2015 4:34 am

Re: M4 metro grand central Sd card?

by dastels on Tue May 18, 2021 10:24 pm

You're welcome. Since the SPI interface is internal to the board (not available on the headers) I suspect the chip select signal is as well.

Dave

dastels
 
Posts: 6872
Joined: Tue Oct 20, 2015 3:22 pm

Re: M4 metro grand central Sd card?

by josephchrzempiec on Tue May 18, 2021 10:26 pm

Thank you Dave.


Joseph

josephchrzempiec
 
Posts: 74
Joined: Tue May 12, 2015 4:34 am

Please be positive and constructive with your questions and comments.