Class SerialMessagePort
Represents a port that is capable of serial (UART) communications.
Has a streamlined API over class SerialPort that deals in messages.
This is a modern, asynchronous take on serial communications that is thread-safe and asynchronous in nature. This is the recommended way to use serial on Meadow for nearly all use cases.
Assembly: Meadow.dll
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public class SerialMessagePort : SerialMessageProcessor, ISerialMessagePort
Inheritance: System.Object -> Meadow.Hardware.SerialMessageProcessor
Implements:
Meadow.Hardware.ISerialMessagePort
Properties
BaudRate
Gets or sets the serial baud rate.
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public int BaudRate { get; set; }
PortName
Gets the port name used for communications.
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public string PortName { get; }
IsOpen
Gets a value indicating the open or closed status of the SerialPort object.
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public bool IsOpen { get; }
Parity
Gets or sets the parity-checking protocol.
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public Parity Parity { get; set; }
DataBits
Gets or sets the standard length of data bits per byte.
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public int DataBits { get; set; }
StopBits
Gets or sets the standard number of stop bits per byte.
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public StopBits StopBits { get; set; }
Fields
classicSerialPort
The underlying classic serial port used for communication.
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protected ISerialPort classicSerialPort
Methods
From(ISerialPort, byte[], bool)
Creates a new instance of Meadow.Hardware.SerialMessagePort using the specified parameters for suffix-based message processing.
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public static SerialMessagePort From(ISerialPort commsPort, byte[] suffixDelimiter, bool preserveDelimiter)
Returns
Meadow.Hardware.SerialMessagePort.
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Hardware.ISerialPort | commsPort | The underlying serial port. |
System.Byte[] | suffixDelimiter | The suffix delimiter for message termination. |
System.Boolean | preserveDelimiter | Flag indicating whether to preserve the delimiter in the received message. |
From(ISerialPort, byte[], bool, int)
Creates a new instance of Meadow.Hardware.SerialMessagePort using the specified parameters for prefix-based message processing.
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public static SerialMessagePort From(ISerialPort commsPort, byte[] prefixDelimiter, bool preserveDelimiter, int messageLength)
Returns
Meadow.Hardware.SerialMessagePort.
Parameters
| Type | Name | Description |
|---|---|---|
| Meadow.Hardware.ISerialPort | commsPort | The underlying serial port. |
System.Byte[] | prefixDelimiter | The prefix delimiter for message parsing. |
System.Boolean | preserveDelimiter | Flag indicating whether to preserve the delimiter in the received message. |
System.Int32 | messageLength | The expected message length (excluding the prefix delimiter). |
Init()
Initializes the buffer and underlying serial port
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protected void Init()
Open()
Opens a new serial port connection
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public void Open()
Close()
Closes the port connection and sets the IsOpen property to false
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public void Close()
Write(byte[])
Writes data to the serial port
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public int Write(byte[] buffer)
Returns
System.Int32
Parameters
| Type | Name |
|---|---|
System.Byte[] | buffer |
Write(byte[], int, int)
Writes a specified number of bytes to the serial port using data from a buffer.
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public int Write(byte[] buffer, int offset, int count)
Returns
System.Int32
Parameters
| Type | Name | Description |
|---|---|---|
System.Byte[] | buffer | The byte array that contains the data to write to the port. |
System.Int32 | offset | The zero-based byte offset in the buffer parameter at which to begin copying bytes to the port. |
System.Int32 | count | The number of bytes to write. |
ClearReceiveBuffer()
Discards all data from the receive buffer
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public void ClearReceiveBuffer()