| // Wire Slave Sender |
| // by Nicholas Zambetti <http://www.zambetti.com> |
| |
| // Demonstrates use of the Wire library |
| // Sends data as an I2C/TWI slave device |
| // Refer to the "Wire Master Reader" example for use with this |
| |
| // Created 29 March 2006 |
| |
| // This example code is in the public domain. |
| |
| |
| #include <Wire.h> |
| |
| void setup() |
| { |
| Wire.begin(2); // join i2c bus with address #2 |
| Wire.onRequest(requestEvent); // register event |
| } |
| |
| void loop() |
| { |
| delay(100); |
| } |
| |
| // function that executes whenever data is requested by master |
| // this function is registered as an event, see setup() |
| void requestEvent() |
| { |
| Wire.write("hello "); // respond with message of 6 bytes |
| // as expected by master |
| } |
