Description: A Micro-SD Card Module connected to a Seeeduino Xiao detects any files on the micro-sd card and displays them on the Serial Monitor.
Note: D3 is the CS Pin for the Seeeduino Xiao. Not all Micro-SD cards may work, especially the older ones, so try out a few different brands. Also, make sure to open the Serial Monitor and set the Baud Rate to 9600 in order to see the incoming data as in the picture below:
Supplies:
1 – Breadboard 400 Points
1 – Seeeduino Xiao
1 – Micro-SD Card Module >> Link <<
Arduino Code:
#include <SPI.h>
#include <SD.h>
// set up variables using the SD utility library functions:
Sd2Card card;
SdVolume volume;
SdFile root;
void setup() {
// Open serial communications and wait for port to open:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect.
}
Serial.println("\nInitializing SD card_");
if (!card.init()) {
Serial.println("Initialization failed.");
while (1);
}
else
{
Serial.println();
Serial.println("Micro-SD Card detected!");
}
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");
}
if (!volume.init(card)) {
Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
while (1);
}
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)
volumesize /= 1024;
Serial.print("Volume size (GB): ");
Serial.println((float)volumesize / 1024.0);
Serial.println("\nFiles found on the card: ");
root.openRoot(volume);
// list all files in the card
root.ls(LS_R);
}
void loop() {
}