I have 2 Fio boards with Xbee series1 on top communicating (9600 baud) back an forth with "H" and "L" using the same code for both boards: if(pin1 > pin2){ Serial.print('H'); delay(100); digitalWrite(led10, LOW); …

Fio Xbee communication

wildbill May 20, 2012, 3:35pm 8

It does indeed read the oldest byte first. i.e. all the 'H' bytes that arrived before the 'L'

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