Interface Tango::Device

Global index

  interface Device;

The fundamental interface for all TANGO objects. Each Device is a network object which can be accessed locally or via network. The network protocol on the wire will be IIOP. The Device interface implements all the basic functions needed for doing generic synchronous and asynchronous I/O on a device. A Device object has data and actions. Data are represented in the form of Attributes. Actions are represented in the form of Commands. The CORBA Device interface offers attributes and methods to access the attributes and commands. A client will either use these methods directly from C++ or Java or access them via a wrapper class. The Device interface describes only the remote network interface. Implementation features like threads, command security, priority etc. are dealt with in server side of the device server model.

Operation index.

black_box
command_inout
command_list_query
command_query
get_attribute_config
info
ping
read_attributes
set_attribute_config
write_attributes

Attribute index.

adm_name
description
name
state
status

Operations.

black_box
```
  DevVarStringArray black_box (
    in long n
  ) raises(DevFailed);
```
read list of last N commands executed by clients
- Parameter IN :
  - n : umber of commands to return
return : list of command and clients
command_inout
```
  any command_inout (
    in string command,
    in any argin
  ) raises(DevFailed);
```
execute a command on a device synchronously with one input parameter and one output parameter
- Parameters IN :
  - command : ascii string e.g. "On"
  - argin : command input parameter e.g. float
return : command result.
command_list_query
```
  DevCmdInfoList command_list_query (
  ) raises(DevFailed);
```
query device to see what commands it supports

return : list of commands and their types
command_query
```
  DevCmdInfo command_query (
    in string command
  ) raises(DevFailed);
```
query device to see command argument
- Parameter IN :
  - command : name
return : command and its types
get_attribute_config
```
  AttributeConfigList get_attribute_config (
    in DevVarStringArray names
  ) raises(DevFailed);
```
read the configuration for a variable list of attributes from a device
- Parameter IN :
  - names : read the configuration for a variable list of attributes from a device
return : list of attribute configurations read
info
```
  DevInfo info (
  ) raises(DevFailed);
```
return general information about object e.g. class, type, ...

return : device info
ping
```
  void ping (
  ) raises(DevFailed);
```
ping a device to see if it alive
read_attributes
```
  AttributeValueList read_attributes (
    in DevVarStringArray names
  ) raises(DevFailed);
```
read a variable list of attributes from a device
- Parameter IN :
  - names : read a variable list of attributes from a device
return : list of attribute values read
set_attribute_config
```
  void set_attribute_config (
    in AttributeConfigList new_conf
  ) raises(DevFailed);
```
set the configuration for a variable list of attributes from the device
- Parameter IN :
  - new_conf : list of attribute configuration to be set
return : nothing
write_attributes
```
  void write_attributes (
    in AttributeValueList values
  ) raises(DevFailed);
```
write a variable list of attributes to a device
- Parameter IN :
  - values : list of attribute values to write
return : nothing

Attributes.

adm_name
```
  readonly attribute string adm_name;
```
adm_name (readonly) - administrator device unique ascii identifier
description
```
  readonly attribute string description;
```
description (readonly) - general description of device
name
```
  readonly attribute string name;
```
name (readonly) - unique ascii identifier
state
```
  readonly attribute DevState state;
```
state (readonly) - device state
status
```
  readonly attribute string status;
```
status (readonly) - device state as ascii string

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