Arduino Reference - SoftwareSerialAvailable

Arduino

Reference Language | Libraries | Comparison | Changes

## 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();
}
}
[Get Code]

#### See also

- SoftwareSerial()
- read()
- print()
- println()

Reference Home

Corrections, suggestions, and new documentation should be posted to the Forum.

The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

©Arduino | Edit Page | Page History | Printable View | All Recent Site Changes