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Reference for Wiring version 0024+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Class | Wire
Name | ### available()
Examples |
    #include "TwoWire.h"

    void setup()
    {
      Wire.begin(4);                // join i2c bus with address #4
      Wire.onReceive(receiveEvent); // register event
      Serial.begin(9600);           // start serial for output
    }

    void loop()
    {
      delay(100);
    }

    // function that executes whenever data is received from master
    // this function is registered as an event, see setup()
    void receiveEvent(int howMany)
    {
      while(1 < Wire.available()) // loop through all but the last
      {
        char c = Wire.receive(); // receive byte as a character
        Serial.print(c);         // print the character
      }
      int x = Wire.receive();    // receive byte as an integer
      Serial.println(x);         // print the integer
    }
Description | Returns the number of bytes available.
Syntax |
    Wire.available()
Parameters |
Wire | The TWI port.
Returns | int
Usage | Application

Updated on November 01, 2009 09:20:36am PST