::= " " "\n" ::= (|"nack") "\n" Echo: ::= "e" :: :: Write EEPROM: ::= "w" ::= " " " " ::= "ok" Read EEPROM: ::= "r" ::= " " ::= {size} ::= "0"--"2047" ::= | "" ::= " " | "" ::= "0"--"FF" ::= "0"--"2048" Messages must not contain NUL ('\0').