Arduino Reference - SoftwareSerialAvailable

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SoftwareSerial: available()

Description

Get the number of bytes (characters) available for reading from a software serial port. This is data that's already arrived and stored in the serial receive buffer.

Syntax

mySerial.available()

Parameters

none

Returns

the number of bytes available to read

Example

// include the SoftwareSerial library so you can use its functions:
#include <SoftwareSerial.h>

#define rxPin 10
#define txPin 11

// set up a new serial port
SoftwareSerial mySerial = SoftwareSerial(rxPin, txPin);

void setup() {
// define pin modes for tx, rx:
pinMode(rxPin, INPUT);
pinMode(txPin, OUTPUT);
// set the data rate for the SoftwareSerial port
mySerial.begin(9600);
}

void loop() {
if (mySerial.available()>0){
mySerial.read();
}
}

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