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(); } }
See also
- SoftwareSerial()
- read()
- print()
- println()
The text of the 86Duino reference is a modification of the Arduino reference, and is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.