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  • .No, Serial.read returns -1 when there is nothing there to read, i.e. nothing has been received. (-1 is most definitely NOT null)Follow your code through:In loop, suddenly available returns 1 because a character has just been received.Call ReadData, set c to zero, test to see if c is a semicolon (it isn't), so read the character that just came in.it is not -1, so print it.Go back to the top of th
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