Accessory; Host Processor - Panasonic eUniStone Application Note Design Manual


The host application that controls eUniStone need to fulfill the control as required by the Accessory
functionality. To control the Bluetooth link using eUniStone minimal requirements must be covered
since the entire Bluetooth stack is included in eUniStone.
5.1

Accessory

An accessory can be any device that connects, sends and/or receives data to and from a remote
device. The device can be small and portable or part of a bigger system. Typical usages for an
accessory are;

Sensor

Display

Remote control

Display with buttons

Keypad

Handheld terminal
The eUniStone is specially made to support all these types of accessories/applications using the Serial
Port Profile (SPP) over Bluetooth.
5.1.1

Host Processor

The host processor in an accessory, using eUniStone, may be a really light micro-controller, FPGA or
similar but also e.g. a PC. In the below figure there is an external peripheral control and chip connected
to the host processor, this may be needed depending on the accessory functionality requirements. For
use in an iPhone application there is a need for an external chip and control functionality.
Application Note
Design Guide
22
PAN1322
Revision 1.2, 2013-12-18