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<h2>Serial.println(data)</h2>
<h4>Description</h4>
<p>Prints a data to the serial port, followed by a carriage return character(ASCII 13, or '\r') and a newline character (ASCII 10, or '\n'). This command takes the same forms as <a class='wikilink' href='Serial_Print.html'>Serial.print</a>():
</p>
<p class='vspace'></p><p><strong>Serial.println(b)</strong>
prints b as a decimal number in an ASCII string followed by a carriage return and a linefeed.
</p>
<p class='vspace'></p><p><strong>Serial.println(b, DEC)</strong>
prints b as a decimal number in an ASCII string followed by a carriage return and a linefeed.
</p>
<p class='vspace'></p><p><strong>Serial.println(b, HEX)</strong>
prints b as a hexadecimal number in an ASCII string followed by a carriage return and a linefeed.
</p>
<p class='vspace'></p><p><strong>Serial.println(b, OCT)</strong>
prints b as an octal number in an ASCII string followed by a carriage return and a linefeed.
</p>
<p class='vspace'></p><p><strong>Serial.println(b, BIN)</strong>
prints b as a binary number in an ASCII string followed by a carriage return and a linefeed.
</p>
<p class='vspace'></p><p><strong>Serial.print(b, BYTE)</strong>
prints b as a single byte followed by a carriage return and a linefeed.
</p>
<p class='vspace'></p><p><strong>Serial.println(str)</strong>
if str is a string or an array of chars, prints str an ASCII string.
</p>
<p class='vspace'></p><p><strong>Serial.println()</strong>
just prints a carriage return and a linefeed.
</p>
<p class='vspace'></p><h4>Parameter</h4>
<p>data types: integer types, including char, strings (char arrays) & floats<br />Printing of floats is supported with a precision of two places to the right of the decimal point.<br />This may change soon.
</p>
<p class='vspace'></p><h4>Returns</h4>
<p>None
</p>
<p class='vspace'></p><h4>Example:</h4>
<pre>
/*
Analog input
reads an analog input on analog in 0, prints the value out.
created 24 March 2006
by Tom Igoe
*/
int analogValue = 0; // variable to hold the analog value
void setup() {
// open the serial port at 9600 bps:
Serial.begin(9600);
}
void loop() {
// read the analog input on pin 0:
analogValue = analogRead(0);
// print it out in many formats:
Serial.println(analogValue); // print as an ASCII-encoded decimal
Serial.println(analogValue, DEC); // print as an ASCII-encoded decimal
Serial.println(analogValue, HEX); // print as an ASCII-encoded hexadecimal
Serial.println(analogValue, OCT); // print as an ASCII-encoded octal
Serial.println(analogValue, BIN); // print as an ASCII-encoded binary
Serial.println(analogValue, BYTE); // print as a raw byte value
// delay 10 milliseconds before the next reading:
delay(10);
}
</pre>
<p class='vspace'></p><h4>Programming Tip / Known Issues</h4>
<p>see <a class='wikilink' href='Serial_Print.html'>Serial.print</a>
</p>
<p class='vspace'></p><h4>See also</h4>
<ul><li><a class='wikilink' href='ASCIIchart.html'>ASCII chart</a>
</li><li><a class='wikilink' href='Serial_Begin.html'>Serial.begin</a>(speed)
</li><li><a class='wikilink' href='Serial_Available.html'>Serial.available</a>()
</li><li><a class='wikilink' href='Serial_Read.html'>Serial.read</a>()
</li><li><a class='wikilink' href='Serial_Print.html'>Serial.print</a>(data)
</li></ul><p class='vspace'></p><p><a class='wikilink' href='index.html'>Reference Home</a>
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