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3 Software Features
3.1 Basic Software
Items
Air Interface
GPRS Data
IP Stack
Upgrade Method
Remote Update
Power Modes
AT Command
Report
Driver
GPIO
LEDs
Watch Dog
Reset
Startup Banner
3.2 Remote Update
The PM-Hsupports OTA field upgrades of the PM-Hresident 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 PM-Hand 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 PM-H 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
© 2017 M-Labs Technologies8/ 14
Requirement
GSM850, PCS1900, WCDMA Band II, WCDMA Band V
GPS
Supported
Ipv4/IPV6
Remote update/ PC tool
Supported
Supported
Supported
Supported；3000records
GPIO，LED，GPS，UART，3.3V out
Interrupt for Door Open Detect
GPS Status, WCDMA Status
Supported
Soft reset
Supported
，
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