It's basically the slave_receiver example, just modified to show the byte value in hex.
Wire.onReceive(receiveEvent); // register event
Serial.begin(19200); // start serial for output
// 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.println(c, HEX); // print the character
int x = Wire.receive(); // receive byte as an integer
Serial.println(x, HEX); // print the integer
I can try to capture of the iPort waveforms also, to show that it outputs correctly. We've used this device extensively with no problems, but a second check never hurts ...