Install and Test PCI 16 Photo/16 Relay Card on Linux

This page describes you how to install and test PCI 16 Photo/16 Relay Card on linux.

1. Install the driver

1.1 Download Device Driver
1.2 DIP Switch set
  1.2.1 PnP mode
  1,2,2 Manual mode
1.3 Install step
2. Uninstall the driver
3. Self test the card
3.1 The test method
3.2 The Loopback test tool
  3.2.1 DB37 Connector assignment
  3.2.2 The circuit figure
  3.2.3 The Finished Product
  3.2.4 The usage of the test equipment
3.3 The test programs
  3.3.1 Compile the test files
  3.3.2 Execute the test file
  3.3.3 Execute the test1 file
  3.3.4 Execute the test2 file

1. Instal1 the driver

This sample is under REDHAT 8.0 KERNEL 2.4.18-14.

You can do it in the ' text-mode ' or use the Terminal of System tools in ' graphic-mode '.

1.1 Download Device Driver

Download driver from as follows:

dpci16in16out_2.2.14.tgz for KERNEL 2.2.14 release Date:2003/3/05

dpci16in16out_2.4.18.tgz for KERNEL 2.4.18 release Date:2003/3/05

Download the driver to /tmp

You can use 'uname -a' command to check your kernel's version.

1.2 DIP Switch set

The switch is used to identify card number, default setting is card 1. There are two methods to set

the card number:

1.2.1 PnP mode

Just plug in PCI bus adapter into PCI slot, the PCI BIOS will allocate I/O address to each adapter

automatically and assign card number start from 0 to each adapter. However, if you plug in more

than one adapter, please set whole adapters to card number 1 (default setting), then use software

tools to distinguish port id.

1.2.2 Manual mode

Set card number by card identifier switch, the PCI BIOS will assign pre-allocated I/O address to each

adapter. Please set different card number to each adapter (do not duplicate card number setting).

1.3 Instal1 step

Step 1: Extract the file

Step 2: Execute the install file to install

Step 3: Please use "lsmod" command to check

Step 4: Please edit /etc/rc.local to add a command line as follows:

Step 5: Please reboot systems.

Step 6: Please use 'lsmod' to check after system restarted. You can find PCI 16 Photo/16 Relay.

2. Uninstall the driver

If you want to remove the driver.You can use 'ls' command to find 'uninstall' file.

Then execute the file.

3. Salf test the card:

3.1 The test method

The 'LOOPBACK TEST' is a diagnostic procedure in which a signal is transmitted and received

through all or portion of a circuit.The received signal is compared with the transmitted signal in

order to evaluate the integrity of the equipment or transmission path.

3.2 The Loopback test tool

For testing you need to prepare a test tool.You can do it as follows:

3.2.1 DB37 Connector assignment

According to DB37 Connector Assignments , you can make a lookback equipment to test the card

is warking properly.

3.2.2 The circuit figure

According to DB37 Connector Assignments ,we draw the circuit figure.

In order to show the result of the test, we add sixteen LEDs.

3.2.3 The Finished Product

In the sample ,you need some materials as follows:

DB37 CONNECTOR (Male) x 1


LED x 16


( or ELECTRIC RESISTOR ( 1K ) x 16 )

wine (1mm)

3.2.4 The usage of the loopback test tool

The usage of the test tool can refer to the following figure.

3.3The test program

The device driver already includes three test programs.
1.test.c: Auto tests Relay Output ON/OFF.
2.test1.c: Auto tests Relay Output and Photo Input.
3.test2.c: Manuly tests Relay Output.

3.3.1 Compile the test files

Please compile the 'test.c' 'test1.c' 'test2.c' files as following step:
Then it will create the 'test' 'test1' 'test2' file.

3.3.2 Execute the test file

Please execute the 'test' file to test Relay output. You will see Led light from L1 to L16 Auto ON and OFF .

The test.c's content is as follows:

3.3.3 Execute the test1 file

Please execute 'test1' to test Relay and Photo. The result is as follows:

The test1.c's content is as follows:

3.3.4 Execute the test2 file

Please execute 'test2' to test Relay . The result is as follows:

The test2.c's content is as follows: