User`s manual

Table of Contents
Chapter 1 Introduction ..................................................................................................1-1
Overview.................................................................................................................................. 1-2
Software Architecture .............................................................................................................. 1-2
Journaling Flash File System (JFFS2)........................................................................ 1-3
Software Package ....................................................................................................... 1-4
Chapter 2 Getting Started .............................................................................................2-1
Powering on the IA241/240..................................................................................................... 2-2
Connecting the IA241/240 to a PC .......................................................................................... 2-2
Serial Console ............................................................................................................ 2-2
Telnet Console............................................................................................................ 2-3
SSH Console .............................................................................................................. 2-4
Configuring the Ethernet Interface .......................................................................................... 2-6
Modifying Network Settings with the Serial Console................................................ 2-6
Modifying Network Settings over the Network ......................................................... 2-7
Configuring the WLAN via the PCMCIA Interface ................................................................ 2-7
IEEE802.11g .............................................................................................................. 2-7
SD Socket and USB for Storage Expansion............................................................................2-11
Test Program—Developing Hello.c....................................................................................... 2-12
Installing the Tool Chain (Linux)............................................................................. 2-12
Checking the Flash Memory Space.......................................................................... 2-13
Compiling Hello.c .................................................................................................... 2-13
Uploading and Running the “Hello” Program.......................................................... 2-14
Developing Your First Application ........................................................................................ 2-14
Testing Environment ................................................................................................ 2-15
Compiling tcps2.c..................................................................................................... 2-15
Uploading and Running the “tcps2-release” Program.............................................. 2-16
Testing Procedure Summary .................................................................................... 2-18
Chapter 3 Managing Embedded Linux ........................................................................3-1
System Version Information..................................................................................................... 3-2
System Image Backup.............................................................................................................. 3-2
Upgrading the Firmware............................................................................................. 3-2
Loading Factory Defaults........................................................................................... 3-4
Backing Up the User Directory.................................................................................. 3-4
Deploying the User Directory to Additional IA241/240 Units................................... 3-5
Enabling and Disabling Daemons............................................................................................ 3-5
Setting the Run-Level.............................................................................................................. 3-7
Adjusting the System Time...................................................................................................... 3-8
Setting the Time Manually ......................................................................................... 3-8
NTP Client.................................................................................................................. 3-8
Updating the Time Automatically............................................................................... 3-9
Cron—Daemon to Execute Scheduled Commands ................................................................. 3-9
Chapter 4 Managing Communications ........................................................................4-1
Telnet / FTP ............................................................................................................................. 4-2
DNS ......................................................................................................................................... 4-2
Web Service—Apache............................................................................................................. 4-2
Install PHP for Apache Web Server ......................................................................................... 4-4