Brightsign Object Reference Manual (FW 5.1) Manuel d'utilisateur télécharger pdf (Page 296)

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roSequenceMatcher

This object is used to send roSequenceMatchEvent events when the specified byte sequence patterns are matched.

Once a pattern has been matched and the event has been posted, all contributing bytes are discarded. As a result, if one

pattern is a prefix of another pattern, then the second, longer pattern will never be matched by the object.

Interfaces: ifStreamReceiveObserver, ifSequenceMatcher

The ifSequenceMatcher interface provides the following:

• SetMessagePort(a As Object): Specifies the message port where roSequenceMatchEvent objects will be

posted.

• Add(pattern As Object, user_data As Object) As Boolean: Adds a pattern to be matched by the

roSequenceMatcher object instance. The pattern should be specified as an object that is convertible to a byte

sequence (e.g. roByteArray, roString). For the user data, pass the object that should be returned if the specified

pattern is matched.

Example

Function FromHex(hex as String) as Object

bytes = CreateObject("roByteArray")

bytes.FromHexString(hex)

return bytes

End Function

Sub Main()

serial = CreateObject("roSerialPort", 1, 115200)

mp = CreateObject("roMessagePort")

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Brightsign Object Reference Manual (FW 5.1) Manuel d'utilisateur Page 296

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