User's Manual

© 2016 Connected Holdings LLC 10 / 20
3 Software Features
3.1 Basic Software
Items
Requirement
RF Function
GSM 850/1900MHz/WCDMA(Band2&5); GPS
GPRS Data
Supported
IP Stack
Ipv4/IPV6
Upgrade Method
Remote update / PC tool
Remote Update
Supported
Power Modes
Supported
AT Command
Supported
Report
Supported；3000records
Driver
GPIO，LED，GPS，UART
GPIOs
Interrupt for Door Open Detect, Ignition Status
LEDs
GPS Status, WCDMA Status
Watch Dog
Supported (CBP8.2 integrated)
Reset
Soft reset
Startup Banner
Supported
3.2 Remote Update
The AR-3HU /SR-3HU / S4N-3HU / KT-3HU supports OTA field upgrades of the AR-3HU
/SR-3HU / S4N-3HU / KT-3HU resident application. An over the air TFTP (Trivial File
Transfer Protocol) connection is made over a UDP/IP connection. A replacement file is then
transferred from a server to the AR-3HU /SR-3HU / S4N-3HU / KT-3HU and that file replaces
the previous application image.
3.3 Auto Execute
The Auto Execute Utility copies the contents of file system.exf into system executable RAM
and executes it from there. This file is the factory default application. Another file named
custom.exf can be loaded into the file system.
Auto Execute will look first for a file named update.exf and load and execute that in place of
custom.exf if it exists. If update.exf executes successfully, the previous copy of custom.exf is
deleted from the file system and update.exf is renamed to custom.exf.
3.4 Power Modes
The AR-3HU /SR-3HU / S4N-3HU / KT-3HU device supports several power modes that are
set by the power mode command. In full power mode the GPS is active and the cellular
subsystem will maintain a persistent cellular connection whenever service is available. IP
connection is maintained according to the configuration of the device.
The device can be put in low power mode whenever it runs on a backup battery or if the external
battery is low or if it is not moving. In low power mode the GPS is not running and the LED’s