I cannot get my card to initialize. I have read 10 different posts and tried many different things.
I am using the ReadWrite example (Arduino 1.6.9) Here is the code in case you don't have easy access.
/*
SD card read/write
This example shows how to read and write data to and from an SD card file
The circuit:
* SD card attached to SPI bus as follows:
** MOSI - pin 11 I think Mega 50
** MISO - pin 12 I think Mega 51
** CLK - pin 13 I think Mega 52
** CS - pin 4 I have been using 53
created Nov 2010
by David A. Mellis
modified 9 Apr 2012
by Tom Igoe
This example code is in the public domain.
*/
#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(53)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
// open the file. note that only one file can be open at a time,
// so you have to close this one before opening another.
myFile = SD.open("test.txt", FILE_WRITE);
// if the file opened okay, write to it:
if (myFile) {
Serial.print("Writing to test.txt...");
myFile.println("testing 1, 2, 3.");
// close the file:
myFile.close();
Serial.println("done.");
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
// re-open the file for reading:
myFile = SD.open("test.txt");
if (myFile) {
Serial.println("test.txt:");
// read from the file until there's nothing else in it:
while (myFile.available()) {
Serial.write(myFile.read());
}
// close the file:
myFile.close();
} else {
// if the file didn't open, print an error:
Serial.println("error opening test.txt");
}
}
void loop() {
// nothing happens after setup
}
I am using this sparkfun breakout board.
I am also using a MEGA 2560
Finally to get the right voltages I am using something similar to this
http://garagelab.com/profiles/blogs/tutorial-how-to-use-sd-card-with-arduino with exception that I am using pins 50-53 on the MEGA.
My output is saying that my initialization is failing but I wanted to know what is happening. I put a scope up to the clock line and saw that my clock was working. I then put it on the MOSI line and a little ripple but not what I would consider a true data output. Why?
As suggested on a couple forum posts I tried setting my chip select as an output but that still didn't work.
pinMode(53,OUTPUT);
digitalWrite(53, HIGH);
I would really appreciate some help with this. Thanks in advance!