Clearone Writing StreamNet User Manual download pdf (Page 34)

Writing StreamNet Device Drivers

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aString = aSubNode:getStatus(strField, value)

Fetch the most recently assigned value of a status report field. If the report field is

currently undefined, nil will be returned.

aSubNode:default_handle_command(command)

default_handle_command is the last effort command handler and is used only if there

is no handle_command function defined to specifically handle a given command.

Strictly speaking, this function need never be defined or used since any command will

first be handled by the type specific handler.

The single argument is an AsciiCommand table as documented in Chapter 2, Handling

Commands on page 3-1. The driver can define a handle_command method to handle

the incoming ASCII command “#command …”command method to handle the

incoming ASCII command “#command …”

The single argument is an AsciiCommand table as documented in Chapter 2, Handling

Commands on page 3-1.

aSubNode:handle_command(command)

The driver can define a handle_command method to handle the incoming ASCII

command “#command …”

The single argument is an AsciiCommand table as documented in Chapter 2, Handling

Commands on page 3-1.

AsciiCommand

An AsciiCommand object contains the information and parameters contained in an

incoming ASCII command.

aString = command.command

The lower-cased string version of the command itself. For example, in the case of

“#SET FAN,OFF” command.command would contain “set”.

aTable = command.params

A 1-based vector of the parameters specified to the command; e.g., in the case of

“#SET FAN,OFF”, command.params would contain:

command.params = {

[1] = “FAN”,

[2] = “OFF”

}

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Clearone Writing StreamNet User Manual Page 34