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- // Wire Slave Receiver
- // by Nicholas Zambetti <http://www.zambetti.com>
- // Demonstrates use of the Wire library
- // Receives data as an I2C/TWI slave device
- // Refer to the "Wire Master Writer" example for use with this
- // Created 29 March 2006
- // This example code is in the public domain.
- #include <Wire.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.read(); // receive byte as a character
- Serial.print(c); // print the character
- }
- int x = Wire.read(); // receive byte as an integer
- Serial.println(x); // print the integer
- }
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