Brightsign Object Reference Manual (FW 5.1) Manual de usuario descargar pdf (Pagina 300)

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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)

• 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.

• 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:

• 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.

• roStreamByteEvent: The byte event is generated on every byte received. This object implements the ifInt and

ifUserData interfaces.

Interfaces: ifStreamSend, ifStreamReceive, ifSerialControl, ifUserData

The ifStreamSend interface provides the following:

• SetSendEol(eol_sequence As String) As Void: Sets the EOL sequence when writing to the stream.

• SendByte(byte As Integer) As Void: Writes the specified byte to the stream.

• SendLine(string As String) As Void: Writes the specified characters to the stream followed by the

current EOL sequence.

• SendBlock(a As Dynamic) As Void: Writes the specified characters to the stream. This method can support

either a string or an roByteArray. If the block is a string, any null bytes will terminate the block.

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Brightsign Object Reference Manual (FW 5.1) Manual de usuario Pagina 300