Moxa IA3341-LX [17/72] Developing your first application

IA3341 Linux User’s Manual Getting Started

2-9

Developing Your First Application

We use the tcps2 example to illustrate how to build an application. The procedure outlined in the

following subsections will show you how to build a TCP server program plus serial port

communication that runs on the IA3341.

Testing Environment

The tcps2 example demonstrates a simple application program that delivers transparent,

bi-directional data transmission between the IA3341’s serial and Ethernet ports. As illustrated in

the following figure, the purpose of this application is to transfer data between PC 1 and the

IA3341 through an RS-232 connection. At the remote site, data can be transferred between the

IA3341’s Ethernet port and PC 2 over an Ethernet connection.

IA3341

RS-232 LAN

PC1

PC2

Compiling tcps2.c

The source code for the tcps2 example is located on the CD-ROM at

CD-ROM://example/TCPServer2/tcps2.c. Use the following commands to copy the file to a

specific directory on your PC. We use the direrctory /home/ ia3341/1st_application/. Note that

you need to copy 3 files—Makefile, tcps2.c, tcpsp.c—from the CD-ROM to the target directory.

#mount –t iso9660 /dev/cdrom /mnt/cdrom

#cp /mnt/cdrom/example/TCPServer2/tcps2.c /home/IA3341/1st_application/tcps2.c

#cp /mnt/cdrom/example/TCPServer2/tcpsp.c /home/ IA3341/1st_application/tcpsp.c

#cp /mnt/cdrom/example/TCPServer2/Makefile /home/ IA3341/1st_application/Makefile

Type #make to compile the example code:

You will get the following response, indicating that the example program was compiled

successfully.