Tapio User Guide
Origin Instruments Corporation
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8
the adaptive switch is pressed and held Tapio "presses" and
immediately releases the SPACE key. Then, when the adaptive
switch is released Tapio "presses" and immediately releases the 1
(ONE) key. This allows applications to know exactly when an
adaptive switch was pressed and when it was released. Knowing
the leading and trailing edges of switch actuation allows app
developers to employ more efficient scanning techniques.
Modes
There are eight modes and six involve emulating a USB keyboard.
The other two modes emulate a USB mouse and USB game
controller (joystick).
Most of the keyboard modes are self explanatory. However the RJ
and RICH modes are unique in that they send two keyboard keys
with every single adaptive switch actuation.
RICH mode has been described in the previous
Pulse-Pulse
timing
discussion.
In RJ mode, the table shows that when the adaptive switch is
actuated Tapio "presses-and-releases" the ~ (TILDE) key and
then immediately "presses-and-releases" the 1 (ONE) key. In
other words, for each adaptive switch actuation Tapio sends two
keyboard keys. Since RJ mode uses
Pulse timing
, these two keys
are sent when the adaptive switch is first pressed. No matter how
long the adaptive switch is held the keys only go out once.
In Mouse mode Tapio sends the left and right buttons of a
standard mouse. Since mouse mode uses Full Duration timing,
Tapio holds the Mouse button down as long as the adaptive
switch is held down.
In Joystick mode Tapio sends the first and second buttons of a
standard USB game controller. Since Joystick mode uses Full
Duration timing, Tapio holds the joystick button down as long as
the adaptive switch is held down.
Tapio User Guide
Origin Instruments Corporation
P a g e |
5
Introduction
Tapio is a compact adaptive switch interface. It is a native USB
device that can be connected to an Apple iOS device using an
Apple, and some third party Camera Interface Adapters. It accepts
industry standard 3.5 mm stereo or mono plugs and directly
interfaces up to two adaptive switches to an Apple iOS Device or
computer. Tapio is powered from the device and does not require
external power. Tapio uses standard USB Human Interface
Device (HID) drivers and works with iOS Devices, Windows,
Macintosh and Linux computers, and many Alternative and
Augmentative Communication (AAC) devices.
Tapio Features:
Extremely Low Latency
Extremely Low Power
3.5-mm (1/8-inch ) Stereo Jack
Accepts Single or Dual Switches (stereo plug)
Apple Switch Control (iOS7) Events
Keyboard Switch Events
RJ Cooper Switch Events
Mouse Button Emulation
Joystick Button Emulation
Full Speed USB Device
Uses Standard USB HID Drivers
Supports USB Remote Wakeup
Weighs ½-ounce (14-grams)
2- by 0.8- by 0.5-inches (51- by 20- by 13-mm)
Works with Apple iOS Devices, Windows, Mac and Linux
Origin Instruments Quality, Reliability and Support
When Tapio is first plugged into a host device an LED turns on
until the host device recognizes Tapio and USB enumeration is
complete. Thereafter, the LED turns on when an adaptive switch
is actuated.
