Signature; Notifications About The Changes Of The Properties - Lightware VINX-120AP-HDMI-ENC-DNT User Manual

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5.Programmers'Reference

5.2.10. Signature

DEFINITION:
The signature is a four-digit-long hexadecimal value that can be optionally placed before
every command to keep a command and the corresponding responses together as a group.
Eachlineisterminatedwithacarriagereturn(Cr,'\r')andlinefeed(Lf,'\n')characters.Inseveralcasesthe
number of the lines in the response cannot be determined in advance, e.g. the client is intended waiting for the
whole response and also wants to be sure, that the received lines belong together and to the same command.
In these cases, a special feature the 'signature' can be used. In these cases, the response to that particular
command will also be preceded by the signature, and the corresponding lines will be between brackets:
ç 1700#GET/EDID.*
æ {1700
æ pr/EDID.EdidStatus=F89:E1;D1:E2;D1:E3;D1:E4;F89:E5
æ m-/EDID:copy
æ m-/EDID:delete
æ m-/EDID:reset
æ m-/EDID:switch
æ m-/EDID:switchAll
æ }

INFO: ThelinesofthesignaturearealsoCrandLfterminated.

5.2.11. Notifications about the Changes of the Properties

Whenthevalueofapropertyischangedandtheuserissubscribedtothenode,whichthepropertybelongs
to,anasynchronousnotificationisgenerated.Thisisnotificationiscalledasthe'changemessage'.The
format of such a message is very similar to the response for the GET command:
æ CHG/EDID.EdidStatus=F48:E1
A Short Example of How to Use the Subscription
There are two independent users controlling the device through two independent connections (Connection #1
and Connection #2). The events in the rows occur after each other.
ç OPEN/MEDIA/VIDEO/QUALITY
æ o-/MEDIA/VIDEO/QUALITY
ç GET/MEDIA/VIDEO/Quality.QualityMode
æ pm/MEDIA/VIDEO/QUALITY.QualityMode=graphic
ç GET/MEDIA/VIDEO/Quality.QualityMode
æ pm/MEDIA/VIDEO/QUALITY.QualityMode=graphic
ç SET/MEDIA/VIDEO/Quality.QualityMode=movie
æ pw/MEDIA/VIDEO/QUALITY.QualityMode=movie
æ CHG/MEDIA/VIDEO/QUALITY.QualityMode=movie
Explanation: Thefirstuser(Connection #1)setasubscriptiontoanode.Latertheotheruser(Connection #2)
madeachange,andthanksforthesubscription,thefirstusergotanotificationaboutthechange.
VINX-1x0-HDMIExtenders–User'sManual
}
Connection #1
}
Connection #2
 Connection #1
Appliedfirmwarepackage:v2.0.0b27 | LDCsoftware:v1.34.0b2
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