Roku BrightSign Bedienungsanleitung PDF herunterladen (Seite 25)

roSerialPort

This object controls the RS232 serial port, allowing you to receive input and send responses.

roSerialPort has these interfaces:

1. ifStream

2. ifSerialControl

ifStream has these member functions:

rotVOID SendByte(rotINT32 byte)

rotVOID SendLine(rotSTRING line)

rotVOID SendBlock(rotSTRING block)

rotVOID SetEol(rotSTRING eol)

rotVOID SetLineEventPort(rotOBJECT port)

rotVOID SetByteEventPort(rotOBJECT port)

ifSerialControl has this member function:

rotBOOL SetBaudRate(roINT32 baud_rate)

Supported baud rates are:

1800, 2000, 2400, 3600, 4800, 7200, 9600,

12800, 14400, 19200, 23040, 28800, 38400, 57600,

115200

roSerialPort sends events of the following type:

1. roStreamLineEvent - The line event is generated whenever the end of line string set using

SetEol is found and contains a rotString for the whole line.

2. roStreamByteEvent - The byte event is generated on every byte received.

Example: This code waits for a serial event, and echos the input received on the serial port to the

shell

serial = CreateObject("roSerialPort", 0, 9600)

p = CreateObject("roMessagePort")

serial.SetLineEventPort(p)

serial_only:

msg = wait(0,p) ' Wait forever for a message.

if(type(msg) <> "roStreamLineEvent") goto serial_only 'Accept serial

messages only.

serial.SendLine(msg) ' Echo the message back to serial.

1 2 ... 20 21 22 23 24 25 26

Keine Kommentare

Roku BrightSign Bedienungsanleitung Seite 25