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<p><a class='wikilink' href='Serial.html'>Serial</a>
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<p class='vspace'></p><h2>println()</h2>
<h4>Description</h4>
<p>Prints data to the serial port as human-readable ASCII text 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><h4>Syntax</h4>
<p>Serial.println(val) <br />Serial.println(val, format)
</p>
<p class='vspace'></p><h4>Parameters</h4>
<p>val: the value to print - any data type
</p>
<p class='vspace'></p><p>format: specifies the number base (for integral data types) or number of decimal places (for floating point types)
</p>
<p class='vspace'></p><h4>Returns</h4>
<p>size_t (long): println() returns the number of bytes written, though reading that number is optional
</p>
<p class='vspace'></p><h4>Example:</h4>
<p>
<div class='sourceblock ' id='sourceblock1'>
  <div class='sourceblocktext'><div class="arduino"><br />
<span class="coMULTI">/*<br />
&nbsp; Analog input<br />
<br />
&nbsp;reads an analog input on analog in 0, prints the value out.<br />
<br />
&nbsp;created 24 March 2006<br />
&nbsp;by Tom Igoe<br />
&nbsp;*/</span><br />
<br />
<span class="kw1">int</span> analogValue <span class="sy0">=</span> <span class="nu0">0</span><span class="sy0">;</span> &nbsp; &nbsp;<span class="co1">// variable to hold the analog value</span><br />
<br />
<span class="kw1">void</span> <span class="kw3">setup</span><span class="br0">&#40;</span><span class="br0">&#41;</span> <span class="br0">&#123;</span><br />
&nbsp; <span class="co1">// open the serial port at 9600 bps:</span><br />
&nbsp; <span class="kw1">Serial</span>.<span class="kw1">begin</span><span class="br0">&#40;</span><span class="nu0">9600</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
<span class="br0">&#125;</span><br />
<br />
<span class="kw1">void</span> <span class="kw3">loop</span><span class="br0">&#40;</span><span class="br0">&#41;</span> <span class="br0">&#123;</span><br />
&nbsp; <span class="co1">// read the analog input on pin 0:</span><br />
&nbsp; analogValue <span class="sy0">=</span> <span class="kw1">analogRead</span><span class="br0">&#40;</span><span class="nu0">0</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
<br />
&nbsp; <span class="co1">// print it out in many formats:</span><br />
&nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>analogValue<span class="br0">&#41;</span><span class="sy0">;</span> &nbsp; &nbsp; &nbsp; <span class="co1">// print as an ASCII-encoded decimal</span><br />
&nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>analogValue<span class="sy0">,</span> <span class="kw2">DEC</span><span class="br0">&#41;</span><span class="sy0">;</span> &nbsp;<span class="co1">// print as an ASCII-encoded decimal</span><br />
&nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>analogValue<span class="sy0">,</span> <span class="kw2">HEX</span><span class="br0">&#41;</span><span class="sy0">;</span> &nbsp;<span class="co1">// print as an ASCII-encoded hexadecimal</span><br />
&nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>analogValue<span class="sy0">,</span> <span class="kw2">OCT</span><span class="br0">&#41;</span><span class="sy0">;</span> &nbsp;<span class="co1">// print as an ASCII-encoded octal</span><br />
&nbsp; <span class="kw1">Serial</span>.<span class="kw1">println</span><span class="br0">&#40;</span>analogValue<span class="sy0">,</span> <span class="kw2">BIN</span><span class="br0">&#41;</span><span class="sy0">;</span> &nbsp;<span class="co1">// print as an ASCII-encoded binary</span><br />
<br />
&nbsp; <span class="co1">// delay 10 milliseconds before the next reading:</span><br />
&nbsp; <span class="kw1">delay</span><span class="br0">&#40;</span><span class="nu0">10</span><span class="br0">&#41;</span><span class="sy0">;</span><br />
<span class="br0">&#125;</span></div></div>
  <div class='sourceblocklink'><a href='Serial_Println?action=sourceblock&amp;num=1.html' type='text/plain'>[Get Code]</a></div>
</div>

</p>
<p class='vspace'></p><h4>See also</h4>
<ul><li><a class='wikilink' href='Serial_Begin.html'>begin</a>()
</li><li><a class='wikilink' href='Serial_End.html'>end</a>()
</li><li><a class='wikilink' href='Serial_Available.html'>available</a>()
</li><li><a class='wikilink' href='Serial_Read.html'>read</a>()
</li><li><a class='wikilink' href='Serial_Peek.html'>peek</a>()
</li><li><a class='wikilink' href='Serial_ParseInt.html'>parseInt</a>()
</li><li><a class='wikilink' href='Serial_Flush.html'>flush</a>()
</li><li><a class='wikilink' href='Serial_Print.html'>print</a>()
</li><li><a class='selflink' href='Serial_Println.html'>println</a>()
</li><li><a class='wikilink' href='Serial_Write.html'>write</a>()
</li><li><a class='wikilink' href='SerialEvent.html'>SerialEvent</a>()<br />
</li></ul><p class='vspace'></p>
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