I just bought the micro sd shield from Sparkfun and tried running the following program from their site:
/*
Basic example reading and writing to the microSD shield
Based on the SdFat Library by Bill Greiman
SparkFun Electronics
This example creates a file (or opens it if the file already exists) named 'Test.txt.'
A string with the value 'Millis: (number of millis)' is appended to the end of the file.
After writing to the file, the contents of the entire file are printed to the serial port.
*/
//Add the SdFat Libraries
#include <SdFat.h>
#include <SdFatUtil.h>
#include <ctype.h>
//Create the variables to be used by SdFat Library
Sd2Card card;
SdVolume volume;
SdFile root;
SdFile file;
char name[] = "Test.txt"; //Create an array that contains the name of our file.
char contents[256]; //This will be a data buffer for writing contents to the file.
char in_char=0;
int index=0; //Index will keep track of our position within the contents buffer.
void setup(void)
{
Serial.begin(9600); //Start a serial connection.
pinMode(10, OUTPUT); //Pin 10 must be set as an output for the SD communication to work.
card.init(); //Initialize the SD card and configure the I/O pins.
volume.init(card); //Initialize a volume on the SD card.
root.openRoot(volume); //Open the root directory in the volume.
}
void loop(void){
file.open(root, name, O_CREAT | O_APPEND | O_WRITE); //Open or create the file 'name' in 'root' for writing to the end of the file.
sprintf(contents, "Millis: %d ", millis()); //Copy the letters 'Millis: ' followed by the integer value of the millis() function into the 'contents' array.
file.print(contents); //Write the 'contents' array to the end of the file.
file.close(); //Close the file.
file.open(root, name, O_READ); //Open the file in read mode.
in_char=file.read(); //Get the first byte in the file.
//Keep reading characters from the file until we get an error or reach the end of the file. (This will output the entire contents of the file).
while(in_char >=0){ //If the value of the character is less than 0 we've reached the end of the file.
Serial.print(in_char); //Print the current character
in_char=file.read(); //Get the next character
}
file.close(); //Close the file
delay(1000); //Wait 1 second before repeating the process.
}
When I try compiling it, it gives the following error:
'Sd2Card' does not name a type
What does this mean and how can I fix it?