Interlink-electronics VersaPad USB Manual de usuario descargar pdf (Pagina 6)

USB

ersaPad®

Integration Guide

www.interlinkelectronics.com

4.0 Features and Operation

The detailed features of VersaPad are given below.

4.1 USB

The module is fully USB 2.0 compliant and enumerates utilizing native O/S drivers as a HID

mouse with Left, Right, and Center-Click capability. The mouse can also be suspended by

the host, but the mouse cannot wake the host from suspend mode. No features of the

mouse are settable by the host via USB.

4.2 Software Driver

The USB VersaPad enumerates as a standard three-button HID-compliant mouse and

requires no additional driver. In the future, Interlink may provide a driver that adds

additional functionality and customization possibilities to the Windows standard mouse

behavior.

4.3 Touchpad and Mouse

The module is a resistive, 4-wire X-Y touchpad measured by a microcontroller. When not

touched, the touchpad appears to the microcontroller as an open switch. On a touch event,

the processor detects this 'switch closure' and begins to evaluate the touchpad through a

series of measurements. The processor 'oversamples' the touchpad to facilitate filtering

and processing of the mouse report.

4.4 VersaPad Features

4.4.1 Tap for Left-Click

A single tap gesture will be interpreted as a mouse left click at the position of the

cursor. Tap for left-click is enabled by default on the base design. Custom versions

can have tap features disabled.

4.4.2 Double Tap

A double tap gesture will be interpreted as a double mouse left click at the position of

the cursor. Double-tap is enabled by default on the base design. Custom versions can

have tap features disabled.

4.4.3 Tap and Drag

Double-tapping and maintaining contact with the touchpad on the second tap initiates

tap (left-click) and drag. Tap-and-drag is enabled by default on the base design.

Custom versions can have tap features disabled.

4.4.4 Drag Edge Lock

If a Tap and Drag is released near any edge of the touchpad, the drag will not be

released for three seconds. This allows the drag to be resumed without requiring

another double-tap. Drag edge lock is enabled by default on the base design. Custom

versions can have drag edge lock disabled.

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Interlink-electronics VersaPad USB Manual de usuario Pagina 6