#include <P1AM.h>

#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

 }

while (!P1.init()) {

  ; //wait for modules to sign on

 }

 Serial.print("Initializing SD card...");

 if (!SD.begin(A3)) {

  Serial.println("initialization failed!");

  while (1);

 }

 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 datalogger test.txt...");

  myFile.println("testing 1, 2, 3. /n Testing Datalogger");

  // 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

}