ESP8266 Community Forum

Posted: **Thu Sep 21, 2017 12:15 am**

So, I'm having problems initializing the sd card with the esp (NodeMCU).

I wired the sd card to the esp8266 exactly like this. I soldered headers to a microSD-SD card adapter.

SD => ESP8266
CS => GPIO2
SCK => GPIO14
MOSI => GPIO13
MISO => GPIO12

Code: Select all

/*
  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.
       Pin 4 used here for consistency with other Arduino examples


 created  28 Mar 2011
 by Limor Fried
 modified 9 Apr 2012
 by Tom Igoe
 */
// 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
const int chipSelect = 2;

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) {

}

And the sd card fails to initialize
SD card is 4gb

Anyone have any idea what's the problem or any suggestions? I need some help

Posted: **Sat Sep 23, 2017 8:03 pm**

Just a week ago, I connected an SD-card to my NodeMCU using the SPI-bus mode pin-outs found on Wikipedia and it worked instantly.

The sketch used is the "spitftbitmap" demo found in the "Adafruit ILI9341" (TFT) library.
But I actually got my first succesful tests using the SD Card test-sketch (which is, I believe, the same sketch as you posted). :idea:

Posted: **Tue Jan 02, 2018 11:34 am**

Connect the pin between CLK and MISO to ground.

I connected both GND pins on the adapter to ground, however i noticed that i can omit GND pin between MOSI and VCC, But Not the other GND pin (which is shown ommited in the picture you posted).

Also i used D2 (GPIO4) for CS (not important), can use other pin also

Code: Select all

/*
 * Micro SD Shield - Card info
 *
 * 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 WeMos Micro SD Shield uses:
 * D5, D6, D7, D8, 3V3 and G
 *
 * The shield uses SPI bus pins:
 * D5 = CLK
 * D6 = MISO
 * D7 = MOSI
 * D8 = CS
 *
 * The SD card library uses 8.3 format filenames and is case-insensitive.
 * eg. IMAGE.JPG is the same as image.jpg
 *
 * created  28 Mar 2011 by Limor Fried
 * modified 9 Apr 2012 by Tom Igoe
 *
 * This example code is in the public domain.
 * https://github.com/esp8266/Arduino/blob/master/libraries/SD/examples/CardInfo/CardInfo.ino
 */

// 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
// WeMos Micro SD Shield: D8
const int chipSelect = D2;

void setup()
{
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for Leonardo 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()
{
  // nothing happens after setup
}

Posted: **Sun Jan 28, 2018 7:33 am**

QuickFix wrote:Just a week ago, I connected an SD-card to my NodeMCU using

The sketch used is the "spitftbitmap" demo found in the "Adafruit ILI9341" (TFT) library.
But I actually got my first succesful tests using the SD Card test-sketch (which is, I believe, the same sketch as you posted).

Is it possible to utilize Touch capabilities simultaneously, as I see you are sharing pins?

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