Reference for Wiring version 0024+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.
Name |
Wire |
Examples |
#include "TwoWire.h"
void setup()
{
Wire.begin(); // join i2c bus (address optional for master)
Serial.begin(9600); // start serial for output
}
void loop()
{
Wire.requestFrom(2, 6); // request 6 bytes from slave device #2
while(Wire.available()) // slave may send less than requested
{
char c = Wire.receive(); // receive a byte as character
Serial.print(c); // print the character
}
delay(500);
}
#include "TwoWire.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.receive(); // receive byte as a character
Serial.print(c); // print the character
}
int x = Wire.receive(); // receive byte as an integer
Serial.println(x); // print the integer
} |
Description |
There is a TWI (Two Wire Interface) port available on the Wiring board named Wire. The port Wire is available on the Wiring harware pins 0(SCL) and 1(SDA). |
Syntax |
Wire |
Methods |
|
Parameters |
Wire |
The hardware TWI port |
|
Returns |
None |
Usage |
Application |
Updated on November 02, 2009 12:36:18am PST