Need help data-logging final values to an SD card

Other Hardware Storage
1

Here is a code that calculates wind speed for the sensor i am using. I need help getting the final vales 'x' at the bottom into a form in which i can save to an SD card.

define uint unsigned int
#define ulong unsigned long

#define PIN_ANEMOMETER 2 // Digital 2

// How often we want to calculate wind speed
#define MSECS_CALC_WIND_SPEED 1000

volatile int numRevsAnemometer = 0; // Incremented in the interrupt
ulong nextCalcSpeed; // When we next calc the wind speed
ulong time; // Millis() at each start of loop().

void setup() {
Serial.begin(9600);
pinMode(PIN_ANEMOMETER, INPUT);
digitalWrite(PIN_ANEMOMETER, HIGH);
attachInterrupt(0, countAnemometer, FALLING);
nextCalcSpeed = millis() + MSECS_CALC_WIND_SPEED;
}

void loop() {
time = millis();

if (time >= nextCalcSpeed) {
calcWindSpeed();
nextCalcSpeed = time + MSECS_CALC_WIND_SPEED;
}
}

// Interrupt handler for anemometer. Called each time the reed
// switch triggers (one revolution).
//=======================================================
void countAnemometer() {
numRevsAnemometer++;
}

//=======================================================
// Calculate the wind speed, and display it or log it.
// 1 rev/sec = 1.492 mph
//=======================================================
void calcWindSpeed() {
int x, iSpeed;
// This will produce mph * 10
// (didn't calc right when done as one statement)
long speed = 14920;
speed *= numRevsAnemometer;
speed /= MSECS_CALC_WIND_SPEED;
iSpeed = speed; // Need this for formatting below

Serial.print("Wind speed: ");
x = iSpeed / 10;
Serial.print(x);
Serial.print('.');
x = iSpeed % 10;
Serial.print(x);

numRevsAnemometer = 0; // Reset counter
}

I would like to fit the values for the 'x' into the following code here(where it's bold):

String dataString = String(id) + ", " + String(Windspeed);

//open file to wrtie to
File logFile = SD.open ("LOG.csv", FILE_WRITE);
if(logFile)
{
logFile.println(dataString);
logFile.close();
Serial.println(dataString);
}
else
{
Serial.println("cant access file"); //If file cant be accessed
}
// ID number
id++;
delay (1000);
}

2

It would help if you read the frist post in this thread and learned to properly post the code. The cost is unintellegible, doesn't complile, and there seems to be too much of it.

Since you have calculated speed, why don't you just

float speed;

loop.......
Serial.print (speed):

If that sounds like a good idea, you could go on using standard SD code to

        myFile = SD.open(filename, FILE_WRITE);//<<<<<<<<<<<<< OPEN
  myFile.print(speed);
       myFile.close();//>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>CLOSE