Enumerations
enum	State : uint8_t { State::STATE_START = 0, State::WAIT_HEADER = 0, State::WAIT_CHECKSUM = 1, State::STATE_END = 1 }

enum	ParseResult : uint8_t { ParseResult::INSUFFICIENT_DATA, ParseResult::RECEIVED_INVALID_HEADER, ParseResult::RECEIVED_SYS_ACK, ParseResult::RECEIVED_SYS_NACK, ParseResult::RECEIVED_CMD_SELECT, ParseResult::RECEIVED_CMD_WRITE, ParseResult::RECEIVED_CMD_INVALID_FCS }

Variables
constexpr uint8_t	BUFFER_LEN { EV3UartGenerator::Framing::BUFFER_MIN }

Enumeration Type Documentation

◆ ParseResult

strong

Enumeration listing the possible results from parsing an additional byte of data coming from the EV3, returned by Parser

Enumerator
INSUFFICIENT_DATA	The parser does not currently have sufficient data to return a significant parsing result. More data should be passed to the Parser::update() function.
RECEIVED_INVALID_HEADER	The parser received an invalid header byte, a byte that is not the header for any message that the EV3 can send to a sensor. The reasons for this could be: Invalid header byte type (not CMD or SYS) Invalid header byte sub-type (not [SELECT, WRITE] for CMD types or not [ACK, NACK] for SYS types) Invalid payload length in header byte (not [0] for SYS types, or not [1] for SELECT sub-type, or not [1, 32] for WRITE sub-type)
RECEIVED_SYS_ACK	Parser received a SYS ACK message
RECEIVED_SYS_NACK	Parser received a SYS ACK message
RECEIVED_CMD_SELECT	Parser received a CMD SELECT message with good FCS
RECEIVED_CMD_WRITE	Parser received a CMD WRITE message with good FCS
RECEIVED_CMD_INVALID_FCS	Parser received a CMD message with invalid FCS

strong

Enumeration listing the states the parser state machine can be in

Enumerator
STATE_START	Starting value for State values.
WAIT_HEADER	Parser is waiting for the header byte.
WAIT_CHECKSUM	Parser is waiting for the checksum byte.
STATE_END	End value for State values.