Wire
There is a TWI (Two Wire Interface) port available on the Wiring board named Wire. On Wiring v1 boards the SCL and SDA pins are: 0 and 1.
On Wiring S board the SCL and SDA pins are: 8 and 9.
Wire
Wiring TWI port available on pins SCL and SDA.
beginTransmission()
Starts data transmission to the specified device.
endTransmission()
Marks the end of a transmission to a device.
begin()
Initiates the TWI as a Master or a slave using the address specified.
onReceive()
Set the function that executes whenever data is received
as a slave device.
onRequest()
Set the function that executes whenever data is requested
by a master from this device.
read()
Read a byte received from a device.
peek()
Peek the next byte of data in serial port buffer. This doesn't retrieve the actual byte from the buffer. Returns -1 If no data is available..
requestFrom()
Start reading a specified number of bytes from the device specified with a given address.
available()
Returns the number of bytes available.
write()
Write data to a device.