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<p class='vspace'></p><p>This is a very basic example of <span class='wikiword'>SoftwareSerial</span>. It reads in a byte at a time and mirrors it back to you:
</p>
<p class='vspace'></p><pre>
/*
SoftwareSerial example
Sample of the SoftwareSerial library. Listens for serial in on pin 2
and sends it out again on pin 3.
by Tom Igoe
based on examples by David Mellis and Heather Dewey-Hagborg
written: 6 Jan 2007
*/
// include the SoftwareSerial library so you can use its functions:
#include &lt;SoftwareSerial.h&gt;
#define rxPin 2
#define txPin 3
#define ledPin 13
// set up a new serial port
SoftwareSerial mySerial = SoftwareSerial(rxPin, txPin);
byte pinState = 0;
void setup() {
// define pin modes for tx, rx, led pins:
pinMode(rxPin, INPUT);
pinMode(txPin, OUTPUT);
pinMode(ledPin, OUTPUT);
// set the data rate for the SoftwareSerial port
mySerial.begin(9600);
}
void loop() {
// listen for new serial coming in:
char someChar = mySerial.read();
// print out the character:
mySerial.print(someChar);
// toggle an LED just so you see the thing's alive.
// this LED will go on with every OTHER character received:
toggle(13);
}
void toggle(int pinNum) {
// set the LED pin using the pinState variable:
digitalWrite(pinNum, pinState);
// if pinState = 0, set it to 1, and vice versa:
pinState = !pinState;
}
</pre>
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<p class='vspace'></p><p><em>Corrections, suggestions, and new documentation should be posted to the <a class='urllink' href='http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?board=swbugs' rel='nofollow'>Forum</a>.</em>
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