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How to Install and Test PCI 8 Photo/8 Relay Card on Linux
The page describes you how to install and test PCI 8 Photo/8 Relay Card on Linux.
1. Install Devicw Driver
1. Install 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
Please download the driver from as follows:
dpci8in8out_2.2.14.tgz for Kernel 2.2.14 Release Date:2003/3/05
dpci8in8out_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
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 Install steps
Please follow as follows to install:
Step 1: Extract the file.
Step 2: Execute the instal1 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 the systems.
Step 6: Please use 'lsmod' to check after system started. You can find PCI 8Photo/8Relay.
2. How to uninstall
If you want to remove the driver.You can use 'ls' command to find 'uninstall' file.
Then execute the file.
3. Self 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 test tool
For testing you need to prepare a test equipment.You can do it as follows:
3.2.1 DB37 Connector assignment
According to DB37 Connector assignments ,you can make a loopback equipment.
About loopback equipment, please refer to:
3.2.2 The circuit figure
According to DB37 Connector Assignments ,we draw the circuit figure.
3.2.3 The Finished Product
In the sample ,you need some materials as follows:
DB37 CONNECTOR (Male) x 1
wine (1mm)
3.2.4 The usage of the loopback test tool
The usage of the test tool refer to the following figure.
Eight LEDs indiate when I/O is testing.
3.3 The test programs
The
device driver already includes three test programs.
test.c: Auto tests Relay Output ON/OFF.
test1.c: Auto tests Relay Output and Photo Input.
test2.c: Manuly tests Relay Output.
3.3.1 Run the test.c program
Please compile test.c as follows:
#cc test.c
Then it will create a 'a.out' file.
Please execute it to test Relay.
You will see Led light from L1 to L8 on the PCI 8 Photo/8 Relay card.
The test.c's content is as follows:
#include "dpci8in8out.h"
#include "dpci8in8outlib.c"
#include <stdio.h>
#include <fcntl.h> /* open */
#include <unistd.h> /* exit */
/* Main - Call the ioctl functions */
main()
{
int file_desc, i,count=0;
char buf[255];
char b=1;
char *msg = "Message passed by ioctl\n";
sprintf(buf,"/dev/%s0\0",DEVICE_NAME);
file_desc = open(buf, O_RDONLY);
if (file_desc < 0)
{
printf ("Can't open device file: %s\n", buf);
exit(-1);
}
Write8In8OutPort(file_desc,0x0);
do{
Write8In8OutPort(file_desc,b);
b=b<<1;
count++;
if(count%8==0) b=1;
sleep(1);
} while(count<1000);
close(file_desc);
}
3.3.2 Run the test1.c program
Please compile test1.c as follows:
#cc test1.c
Then it will create a 'a.out' file.
Please execute it to test Relay and Photo.
The result is as follows:
The test1.c's content is as follows:
#include "dpci8in8out.h"
#include "dpci8in8outlib.c"
#include <stdio.h>
#include <fcntl.h> /* open */
#include <unistd.h> /* exit */
#include <string.h>
#include <sys/select.h>
/*It is a delay function.*/
void mysleep( long sec, long msec){
struct timeval tv;
tv.tv_sec = sec;
tv.tv_usec = msec*1000;
select(0, NULL, NULL, NULL, &tv);
}
/* Main - Call the ioctl functions */
main()
{
int file_desc,data,i,j=0;
unsigned char buf[255];
sprintf(buf,"/dev/%s0\0",DEVICE_NAME);
file_desc = open(buf, O_RDONLY);
if (file_desc < 0)
{
printf ("Can't open device file: %s\n", buf);
exit(-1);
}
Write8In8OutPort(file_desc,0x0);
for(i=1;i<256;i++)
{
Write8In8OutPort(file_desc,i);
printf("I write %d\n", i);
mysleep(0,100);
printf("I read %02x\n",Read8In8OutPort(file_desc));
mysleep(1,100);
}
Write8In8OutPort(file_desc,0x0);
close(file_desc);
}
3.3.3 Run the test2.c program
Please compile test2.c as follows:
The test2.c's content is as follows:
#include "dpci8in8out.h"
#include "dpci8in8outlib.c"
#include <stdio.h>
#include <fcntl.h> /* open */
#include <unistd.h> /* exit */
#include <stdio.h>
/* Main - Call the ioctl functions */
main()
{
int file_desc, i,j,count=0;
char buf[255];
int b=1;
char *msg = "Message passed by ioctl\n";
sprintf(buf,"/dev/%s0\0",DEVICE_NAME);
file_desc = open(buf, O_RDONLY);
if (file_desc < 0)
{
printf ("Can't open device file: %s\n", buf);
exit(-1);
}
Write8In8OutPort(file_desc,0x0);
printf("Input 1 to 8 to test:\n");
printf("Input 0 to single-off:\n");
printf("Input else number to end test:\n");
j=0;
while(0 <= j <= 8)
{
scanf("%d",&j);
if (j==0){
Write8In8OutPort(file_desc,0);
}
if (j<=8){
b=1;
b=b<<(j-1);
Write8In8OutPort(file_desc,b);
sleep(1);
}
else
{
break;
}
}
Write8In8OutPort(file_desc,0x0);
printf("End test\n");
close(file_desc);
}