Commit edb8f3f8 authored by Erik Strand's avatar Erik Strand

Add Arduino SD card info example

I commented out all uses of the Serial library. As expected it still
doesn't compile, since the Serial library assumes SPI hardware of a
different MCU.
parent 114dfd62
/*
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
// MKRZero SD: SDCARD_SS_PIN
const int chipSelect = 4;
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) {
}
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