Elo TouchSystems Entuitive ET1725L Series User Manual page 103

MagTek Device Drivers for Windows
COMMANDS
Like properties, commands are identified by a string name and have string arguments. All
commands are terminated by line feed <LF> or a carriage return. To invoke a command, an
application simply writes it to the driver in the same manner as writing to a file or serial port. If
the command has a response defined for it, the application reads it from the driver using the same
I/O handle as in the write.
Four types of commands are defined by the device control language:
•
Non-interactive – These commands manipulate the device without requiring any
interaction with the user. The property commands
examples of this type.
•
Interactive – These commands interact with the user. They do not necessarily require the
user to do anything but may only prompt the user to do something.
example of such a command. Others, such as
interaction to complete. For example, the user must either swipe a card or cancel the
operation in order to complete a read command.
•
Device-specific – These commands give access to device-specific features. For example,
the
load_key
before sending it to the host.
•
Raw – These are effectively escape commands. They allow the application to bypass the
driver to perform device-specific operations that are not included in the driver syntax and
not supported elsewhere. With these commands, an application has no limitations on the
amount of control it has over a device. The raw commands can be formatted exactly as
specified in the device documentation. The command bracketing will be inserted by the
driver if required (e.g., <stx> and <etx> will be inserted for certain devices). Three
commands are defined for this type:
data directly to the device, and
the first two.
A small set of interactive and non-interactive commands is all that is required for an application
to perform the most common tasks with these devices. Device-specific or raw commands should
rarely ever be needed.
4
command is available for MagTek devices that use keys to encrypt data
rawxact
and
get
or
read write
and
rawsend rawrecv
, a transactional version that is a combination of
, and
set reset ver
is an
display
, however, require user
, used to send and receive
are