Belkin Slideshow Viewer Instrukcja Użytkownika Pobierz pdf (Strona 7)

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Programming the HAI to communicate with MCE.

Basic Concepts

Sending Commands to Media Center

The Omni Send Message command allows you to send any of the text messages through the

Pro-Link serial port. This is what will be used to send messages through the serial connection

to the Autonomic Controls software running on the host Media Center PC.

The message is sent out through the specified Pro-Link port exactly as the message was

entered in Setup | Names | Message.

The Autonomic Controls server requires all commands to be terminated with a carriage return

or line feed. Carriage returns and line feed characters are not automatically appended to the

end of HAI messages. To send ASCII control as part of the message, you must use the caret

"^" character in the message. This character specifics that the next character is to be

interpreted as an ASCII control character, such as "^M" to represent a carriage return.

Each message can be up to 15 characters long. To send a longer message, simply program two

messages to be sent one after the other.

Receiving Feedback from Media Center

Pro-Link also has the capability to monitor the serial port for incoming text messages. When a

text message is received, Pro-Link searches through all 128 messages for a matching message.

If one is found, the Program Command (macro) corresponding to the matching message is

activated. It is then possible to use a “When message cmd…” program in the Omni to take

action based on Media Center feedback.

When receiving an ASCII message that is over 15 characters, OmniPro II only processes the

last 15 characters of the message.

Pro-Link determines that a message has been received when:

• One or more characters have been received followed by 100 ms of silence

• One or more characters followed by a carriage return character are received

• One or more characters followed by a line feed character are received

It is not necessary to enter the terminating carriage return or line feed character as part of the

message name.

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Belkin Slideshow Viewer Instrukcja Użytkownika Strona 7