Moxa Technologies 331 User Manual download pdf (Page 19)

100

101

UC-7112-LX Plus Software User’s Manual Getting Started

2-11

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 UC-7112-LX Plus.

Testing Environment

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

bi-directional data transmission between the UC-7112-LX Plus’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 UC-7112-LX Plus through an RS-232 connection. At the remote site, data can be

transferred between the UC-7112-LX Plus’s Ethernet port and PC 2 over an Ethernet connection.

Write data to PC1

Receive LAN data

Read serial data

Send data to PC2

tcps2.c

Serial Rx

Buffer

LAN Rx

Buffer

RS-232 LAN

PC 2PC 1

1P 2P

ydaeR

+V TESER

V84-21

1NAL

584/224/232-SR

2NAL

0117-CU

rotacinummoC lasrevinU

Compiling tcps2.c

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

CD-ROM://example

/UC-7112-LX_Plus/TCPServer2/tcps2.c.

Use the following commands to copy the file to a specific directory on your PC. We use the

direrctory /home/UC-7112Plus/1st_application/. Note that you need to copy 3 files from the

CD-ROM to the target directory: Makefile, tcps2.c, tcpsp.c.

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

#cp /mnt/cdrom/example/UC-7112-LX_Plus/TCPServer2/tcps2.c /home/UC-7112Plus/1st_application/tcps2.c

#cp /mnt/cdrom/example/UC-7112-LX_Plus/TCPServer2/tcpsp.c /home/UC-7112Plus/1st_application/tcpsp.c

#cp /mnt/cdrom/example/UC-7112-LX_Plus/TCPServer2/Makefile /home/UC-7112Plus/1st_application/Makefile

Type #make to compile the sample code:

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

successfully.

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