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Libraries \ Wire

Reference for Wiring version 1.0 Build 0100+ If you have a previous version, use the reference included with your software. If see any errors or have any comments, let us know.

Class | Wire
Name |

### write()

Examples |
    #include "Wire.h"

    byte x = 0;

    void setup()
    {
      // join i2c bus (address optional for master)
      Wire.begin();
    }

    void loop()
    {
      Wire.beginTransmission(4); // transmit to device #4
      Wire.write("x is ");       // write five bytes
      Wire.write(x);             // write one byte
      Wire.endTransmission();    // stop transmitting

      x++;
      delay(500);
    }

    #include "Wire.h"

    void setup()
    {
      // join i2c bus with address #2
      Wire.begin(2);
      // register event
      Wire.onRequest(requestEvent);
    }

    void loop()
    {
      delay(100);
    }

    // function that executes whenever data is requested by master
    // this function is registered as an event, see setup()
    void requestEvent()
    {
      // respond with message of 6 bytes
      // as expected by master
      Wire.write("hello ");
    }

Description | The write() method write data to a device.
Syntax |
    Wire.write()
    Wire.write(bytes[], quantity)
    Wire.write(chars[])
Parameters |

bytes | An array of bytes
quantity | The number of bytes to be write
chars | An array of chars
Wire | The hardware TWI port

Usage | Application

Updated on July 07, 2011 11:12:06pm PDT