Header header string key string value string description uint8 UNDEFINED = 0 uint8 type uint8 OUT_OF_RANGE = 1 uint8 UNEXPECTED_RATE = 2 uint8 INVALID_VALUE = 3 uint8 INTERNAL = 4 uint8 FUNCTIONAL = 100 uint8 HARDWARE = 200 uint8 level uint8 OK = 1 uint8 WARN = 2 uint8 ERROR = 3 uint8 FATAL = 4