Занимательная электроника

#include <SPI.h>
#include <SD.h>

File myFile;

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(«Initializing SD card…»);

if (!SD.begin(4)) {
Serial.println(«initialization failed!»);
while (1);
}
Serial.println(«initialization done.»);

if (SD.exists(«example.txt»)) {
Serial.println(«example.txt exists.»);
} else {
Serial.println(«example.txt doesn’t exist.»);
}

// open a new file and immediately close it:
Serial.println(«Creating example.txt…»);
myFile = SD.open(«example.txt», FILE_WRITE);
myFile.close();

// Check to see if the file exists:
if (SD.exists(«example.txt»)) {
Serial.println(«example.txt exists.»);
} else {
Serial.println(«example.txt doesn’t exist.»);
}

// delete the file:
Serial.println(«Removing example.txt…»);
SD.remove(«example.txt»);

if (SD.exists(«example.txt»)) {
Serial.println(«example.txt exists.»);
} else {
Serial.println(«example.txt doesn’t exist.»);
}
}

void loop() {
// nothing happens after setup finishes.
}