1  // Wire Master Reader
 2  // by Nicholas Zambetti <http://www.zambetti.com>
 3  
 4  // Demonstrates use of the Wire library
 5  // Reads data from an I2C/TWI slave device
 6  // Refer to the "Wire Slave Sender" example for use with this
 7  
 8  // Created 29 March 2006
 9  
10  // This example code is in the public domain.
11  
12  
13  #include <Wire.h>
14  
15  void setup()
16  {
17    Wire.begin();        // join i2c bus (address optional for master)
18    Serial.begin(9600);  // start serial for output
19  }
20  
21  void loop()
22  {
23    Wire.requestFrom(2, 6);    // request 6 bytes from slave device #2
24  
25    while (Wire.available())   // slave may send less than requested
26    {
27      char c = Wire.read(); // receive a byte as character
28      Serial.print(c);         // print the character
29    }
30  
31    delay(500);
32  }