Struct StdSerialTransport 

pub struct StdSerialTransport<const ASCII: bool = false> { /* private fields */ }

A concrete implementation of Transport for Serial communication using serialport crate.

The const generic ASCII selects the framing mode at compile time:

• false → Modbus RTU (binary + CRC)
• true → Modbus ASCII (: delimited + LRC)

Prefer the type aliases StdRtuTransport and StdAsciiTransport.

Implementations

impl<const ASCII: bool> StdSerialTransport<ASCII>

pub fn new() -> Self

Creates a new StdSerialTransport instance.

pub fn available_ports() -> Result<Vec<SerialPortInfo>, Error>

Returns a list of available serial ports on the system. This can be useful for allowing a user to select a port.

Trait Implementations

impl<const ASCII: bool> Debug for StdSerialTransport<ASCII>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<const ASCII: bool> Default for StdSerialTransport<ASCII>

fn default() -> Self

Returns the “default value” for a type.

impl<const ASCII: bool> Transport for StdSerialTransport<ASCII>

fn connect(&mut self, config: &ModbusConfig) -> Result<(), Self::Error>

Establishes a connection to the specified serial port.

Arguments

• config - The ModbusConfig containing the serial port configuration. This must be the ModbusConfig::Serial variant.

Returns

Ok(()) if the connection is successfully established, or an error otherwise.

fn disconnect(&mut self) -> Result<(), Self::Error>

Closes the active serial port connection.

If no connection is active, this operation does nothing and returns Ok(()).

fn send(&mut self, adu: &[u8]) -> Result<(), Self::Error>

Sends a Modbus Application Data Unit (ADU) over the serial port.

Arguments

• adu - The byte slice representing the ADU to send.

Returns

Ok(()) if the ADU is successfully sent, or an error otherwise.

fn recv(&mut self) -> Result<Vec<u8, MAX_ADU_FRAME_LEN>, Self::Error>

Receives a Modbus Application Data Unit (ADU) from the serial port.

This implementation is non-blocking: it checks the serial port’s input buffer and reads only the bytes currently available. If no bytes are available, it returns TransportError::Timeout.

Returns

Ok(Vec<u8, MAX_ADU_FRAME_LEN>) containing the received ADU, or an error otherwise.

fn is_connected(&self) -> bool

Checks if the transport is currently connected to a remote host.

const SUPPORTS_BROADCAST_WRITES: bool = true

Compile-time capability flag for Serial-style broadcast write semantics.

const TRANSPORT_TYPE: TransportType

Compile-time transport type metadata.

type Error = TransportError

The specific error type returned by this transport implementation. It must be convertible into the common MbusError for upper-layer processing.

fn transport_type_rt(&self) -> TransportType

Runtime transport type accessor.