Hey guys,
I am using a pushbutton to record time and store the data into a file in a SD card but the file doesn't open
#include <SD.h>
File myFile;
const int buttonPin = 2; // the number of the pushbutton pin
//const int ledPin = 13; // the number of the LED pin
unsigned long time;
// variables will change:
int buttonState = 0; // variable for reading the pushbutton status
void setup() {
// initialize the LED pin as an output:
// pinMode(ledPin, OUTPUT);
// initialize the pushbutton pin as an input:
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
pinMode(buttonPin, INPUT);
Serial.print("Initializing SD card...");
// On the Ethernet Shield, CS is pin 4. It's set as an output by default.
// Note that even if it's not used as the CS pin, the hardware SS pin
// (10 on most Arduino boards, 53 on the Mega) must be left as an output
// or the SD library functions will not work.
pinMode(10, OUTPUT);
if (!SD.begin(10)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
}
myFile = SD.open("test.txt", FILE_WRITE);
}
void loop()
{
// read the state of the pushbutton value:
buttonState = digitalRead(buttonPin);
// check if the pushbutton is pressed.
// if it is, the buttonState is HIGH:
if (buttonState == HIGH) {
// turn LED on:
//digitalWrite(ledPin, HIGH);
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
if (myFile) {
Serial.print("Time: ");
time = millis();
myFile.println(time);
//myFile.close();
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
}
else {
// turn LED off:
//digitalWrite(ledPin, LOW);
}
}
can you give me a hint where I have been wrong?