Roserialport – BrightSign Object Reference Manual (FW 5.1) User Manual
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roSerialPort
This object controls the RS-232 serial port, allowing you to receive input and send responses.
Object Creation: The roSerialPort object is created with two parameters.
CreateObject(roSerialPort, port As Integer, baud_rate As Integer)
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port: The port enumeration of the serial device. Most standard RS-232 serial devices enumerate on port 0. If you
are connecting a USB-serial device (such as a GPS receiver), it will enumerate on port 2.
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baud_rate: The baud rate for serial communication. The serial port supports the following baud rates: 1800, 2400,
4800, 9600, 19200, 38400, 57600, 115200.
roSerialPort sends the following event types:
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roStreamLineEvent: The line event is generated whenever the end of line string set using SetEol is found and
contains a String for the whole line. This object implements the ifString and ifUserData interfaces.
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roStreamByteEvent: The byte event is generated on every byte received. This object implements the ifInt and
ifUserData interfaces.
The ifStreamSend interface provides the following:
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SetSendEol(eol_sequence As String) As Void: Sets the EOL sequence when writing to the stream.
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SendByte(byte As Integer) As Void: Writes the specified byte to the stream.
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SendLine(string As String) As Void: Writes the specified characters to the stream followed by the
current EOL sequence.
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SendBlock(a As Dynamic) As Void: Writes the specified characters to the stream. This method can support
either a string or an
. If the block is a string, any null bytes will terminate the block.