PCI-7248 / 7296

48-bit/96-bit Parallel

Digital I/O Card

@Copyright 1997

All Rights Reserved.

Manual edition 1, April 1997

The information in this document is subject to change without prior notice in order to improve reliability, design and function and does not represent a commitment on the part of the manufacturer.

In no event will the manufacturer be liable for direct, indirect, special, incidental, or consequential damages arising out of the use or inability to use the product or documentation, even if advised of the possibility of such damages.

This document contains proprietary information protected by copyright. All rights are reserved. No part of this manual may be reproduced by any mechanical, electronic, or other means in any form without prior written permission of the manufacturer.

Trademarks

PCI-7248 and PCI-7296 are registered trademarks of ADLink Technology Inc. Other product names mentioned herein are used for identification purposes only and may be trademarks and/or registered trademarks of their respective companies.

CONTENTS

HOW TO USE THIS GUIDE
INTRODUCTION
1.1 Features
1.1.1 Digital I/O Ports
1.1.2 Timer / Counter and Interrupt System
1.1.3 Miscllenous
1.2 Applications
1.3 Specifications
INSTALLATION
2.1 What You Have
2.2 Unpacking
2.3 PCI-7248 Layout
2.4 PCI-7296 Layout
2.5 Connector Pin Assignment
2.6 Jumper Description
2.6.1 Power on State of Ports
2.6.2 12V Power Supply Configuration
2.7 PCI-7248/7296 Installation Outline
2.7.1 Hardware configuration
2.7.2 PCI slot selection
2.7.3 Installation Procedures
2.7.4 Running the 7248UTIL.EXE or 7296UTIL.EXE
OPERATION THEOREM
3.1 Digital I/O Ports
3.1.1 Introduction
3.1.2 8255 Mode 0
3.1.3 Special Funtion of the DIO Signals
3.1.4 Digital I/O Port Programming
3.1.5 Control Word
3.1.6 Power On Configuration
3.1.7 Note for Output Data
3.2 8254 Timer / Counter Operation
3.2.1 Introduction
3.2.2 Cascaded 32 bits Timer
3.2.3 Event Counter and Edge Control
3.3 Interrupt System
3.3.1 System Architecture
3.3.2 IRQ Level Setting
3.3.3 Dual Interrupt System
3.3.4 Interrupt Source Contorl
3.3.5 Self Interrupt Trigger
3.4 12V and 5V Power Supply
C/C++ SOFTWARE LIBRARIES
4.1 Installation

How to Use This Guide

This manual is designed to help you use the PCI-7248/96. It describes how to modify and control various functions on the PCI-7248/96 card to meet your requirements. It is divided into three chapters:

· Chapter 1, "Introduction," gives an overview of the product 9273 features. applications, and specifications.

· Chapter 2, "Installation," describes how to install the PCI-7248/96. The layout of PCI-7248/96 are shown, the jumper settings, the connectors specifications, and the notes for installation are described.


· Chapter 3, "Operation Theorem" describes more details about the versatile functions, including DIO, timer / counter, and interrupt systems.


· Chapter 4, "Software Library" specifies the software library of C language under DOS environment that makes you can operate the functions on this card easily.

1

Introduction

The PCI-7248 and PCI-7296 are multi-functions digital I/O board used for industrial PC with PCI bus. The PCI cards are plug and play therefore it is not nessary to set any jumper for matching the PC environment. PCI-7248 is a 48-bit Parallel DIO card and PCI-7296 is an 96-bit parallel DIO card.

The PCI-7248 emulates two industry standard mode zero configuration of 8255 Programmable Peripheral Interface (PPI) chips. The PCI-7296 emulates four PPI chips. These two cards are compatible not only on hardware connectors but also on software programming. This manual is used to lead users to know how to operate these two cards.

Every PPI connector offers 3 ports: PA, PB, and PC. The PC can also be subdivided into 2 nibble-wide ( 4-bit) ports - PC Upper and PC Low. Two and four 50-pin male ribbon connectors come equipped with the PCI-7248 and PCI-7296. Each connector is corresponding to one PPI chip with 24 DIO points.

The PCI-7248/96 is programmed using the ADLink`s software library. The programming of these PCI cards is as easy as AT bus add-on cards.

1.1 Features

The PCI-7248/96 Multi-functions Digital I/O Boards provide the following advanced features:

1.1.1 Digital I/O Ports

· 48 or 96 TTL/DTL compatible digital I/O lines

· Emulates two/four industry standard mode 0 of 8255 PPI

· Buffered circuits for higher driving

· Direct interface with OPTO-22 compatible I/O module

· Output status readback

1.1.2 Timer / Counter and Interrupt System

· A 32 bits timer to generate watchdog timer interrupt

· A 16 bits event counter to generate event interrupt

· Programmable interrupt source

· Dual interrupt system

1.1.3 Miscllenous

· Provide 12V and 5V power supply on OPTO-22 connectors

· On board resettable fuses to protect power supply for external devices

1.2 Applications

· Programmable mixed digital input & output

· Industrial monitoring and control

· Digital I/O control

· Contact closure, switch / keyboard monitoring

· Connects with OPTO-22 compatible modules

· Useful with A/D and D/A to implement a data acquisition & control system

1.3 Specifications

BORDER=1 CELLSPACING=1> I/O channels 48-bit for PCI-7248
96-bit for PCI-7296 Input Signal Logic High Voltage :2.0 V to 5.25V
Logic Low Voltage : 0.0 V to 0.80V
Logic High Current : 20.0 uA
Logic Low Current : -0.2 mA Output Signal Logic High Voltage : Minimum 2.4 V
Logic Low Voltage : Maximum 0.5V
Logic High Current : -15.0 mA
Logic Low Current : 24.0 mA Operating Temperature 0 ~ 60 C Storage Temperature -20 ~ 80 C Humidity 5% ~ 95% non-condensing I/O Connectors 50-pin male ribbon cable connector Bus PCI bus IRQ Level Set by Plug and Play BIOS I/O port address Set by Plug and Play BIOS Power Consumption
(without external devices) PCI-7248 :

450mA @5VDC ( Typical)

540mA @5VDC ( Maximum)

PCI-7296 :

600mA @5VDC ( Typical)

750mA @5VDC ( Maximum) Transfer Rate 500 K bytes/sec (Typical)
Size PCI-7248 : 147mm x 98.8mm
PCI-7296 : 165mm x 98.8 mm

2

Installation

This chapter describes how to install the PCI-7248 or PCI-7296. At first, the contents in the package and unpacking information that you should be careful are described.

2.1 What You Have

In addition to this User's Manual, the package includes the following items:


· PCI-7248 48-bits Parallel Digital I/O Card

or

· PCI-7296 96-bits Parallel Digital I/O Card

If any of thes e items is missing or damaged, contact the dealer from whom you purchased the product. Save the shipping materials and carton in case you want to ship or store the product in the future.

2.2 Unpacking

Your PCI-7248/96 card contains sensitive electronic components that can be easily damaged by static electricity.

The card should be done on a grounded anti-static mat. The operator should be wearing an anti-static wristband, grounded at the same point as the anti-static mat.

Inspect the card module carton for obvious damage. Shipping and handling may cause damage to your module. Be sure there are no shipping and handing damages on the module before processing.

After opening the card module carton, exact the system module and place it only on a grounded anti-static surface component side up.

Note : DO NOT APPLY POWER TO THE CARD IF IT HAS BEEN DAMAGED.

You are now ready to install your ACL-7248/96.

2.3 PCI-7248 Layout

Figure 2.1 PCI-7248 Layout

2.4 PCI-7296 Layout

Figure 2.4 PCI-7296 Layout

2.5 Connector Pin Assignment

The I/O ports of PCI-7248/96 emulate the mode 0 configuration of the 8255 general purpose programmable peripheral interface. This card comes equipped with two/four 50-pin male IDC connectors that interface with OPTO-22. Figure 2.5 shows the circuits and pin assignment of PCL-7248/96's connectors (CN1~CN4) .

Note : The pin assignment of the CN1 ~ CN4 connectors are identical.

Figure 2.5 Connectors Pin Assignment Power Signals

The DIO pin names are specified as PnXb, where

n : means the connector reference number n=1~4.

X : means the port name, X= `A' , `B' or `C'

b : means the bit number of a port, b=0~7

For example, P1C4 means bit 4 of port C on connector CN1.




Note : The power supply pins are protected by resetable fuses. Refer to section 3.4 for details of the power supply.

2.6 Jumper Description

The PCI-7248/96 DIO cards are `plug and play' cards using PCI bus. It is not necessary to setup the card configurations to fit the computer system`s hardware configurations. However, to fit users' versitile operation environment, there are still a few jumpers to set the power on state of ports and the usage of the +12V output pins.

2.6.1 Power on State of Ports

For every port on the PCI-7248/96 cards, the power on state is set as input, therefore, the voltage could be pulled high, pulled low, or floating. It is dependent on the jumpers setting. Table 2.6 lists the reference number of the jumpers and the corresponding port names.

Jumper	Port Name	Remarks
JA1	P1A (Port A of CN1)	for both PCI-7248/7296
JB1	P1B (Port B of CN1)	for both PCI-7248/7296
JC1	P1C (Port C of CN1)	for both PCI-7248/7296
JA2	P2A (Port A of CN2)	for both PCI-7248/7296
JB2	P2B (Port B of CN2)	for both PCI-7248/7296
JC2	P2C (Port C of CN2)	for both PCI-7248/7296
JA3	P3A (Port A of CN3)	for PCI-7296 only
JB3	P3B (Port B of CN3)	for PCI-7296 only
J C3	P3C (Port C of CN3)	for PCI-7296 only
JA4	P4A (Port A of CN4)	for PCI-7296 only
JB4	P4B (Port B of CN4)	for PCI-7296 only
J C4	P4C (Port C of CN4)	for PCI-7296 only

Table 2.6 Jumpers and Port names list

The physical meaning of all the jumpers are identical. The power on state of each port can be set independently. The defalut is to pull all signals high. The following diagram use JA1 as an example to show the possible configurations.

1. Port A of CN1 are power on pulled `H'.

1 2 JA1


2. Port A of CN1 are power on pulled `L'.

1 2 JA1


3. Port A of CN1 are power on floating. (The jumper is removed)

1 2 JA1

2.6.2 12V Power Supply Configuration

The pin 2 and pin 4 of the CN1 ~ CN4 50-pin OPTO-22 connectors can be configured as 12V power supply or ground. Please refer to Figure 2.5 for the 12 volts power supply circuits. JP1~JP4 set the 12V power of CN1~CN4 respectively. The default configuration is short to ground. The following diagram shows the setting of JP2, shorting the pin 2 and pin 4 of CN2 to ground.

 

1 2 JA2

2.7 PCI-7248/7296 Installation Outline

2.7.1 Hardware configuration :

PCI-7248/7296 has plug and play component, the card can requests an interrupt via a system call. The system BIOS responds with an interrupt assignment based on the PCI-7248/7296`s configuration registers and on known system parameters( which are set by system BIOS). Interrupts assigned are a function of the system, the system BIOS, the installed driver and the installed PCI boards.

Memory usage ( I/O port locations) of the PCI-7248/7296 is also assigned by system BIOS. The address assignment is done on a board-by-board basis for all PCI-7248s in the system.

2.7.2 PCI slot selection

Your computer will probably have both PCI and ISA slots. Do not force the PCI-7248 into a PC/AT slot.

2.7.3 Installation Procedures

1. Turn off your computer

2. Turn off all accessories (printer, modem, monitor, etc.) connected to computer.

3. Remove the cover from your computer.

4. Select a 32-bit PCI expansion slot. PCI slot are short than ISA or EISA slots and are usually white or ivory.

Caution !! Don`t put PCI-7248/7296 card into ISA or EISA slot.


5. Before handling the PCI-7248/7296, discharge any static buildup on your body by touching the metal case of the computer. Hold the edge and do not touch the components.

6. Position the board into the PCI slot you selected.

7. Secure the card in place at the rear panel of the system unit using screw removed from the slot.

2.7.4 Running the 7248UTIL.EXE or 7296UTIL.EXE

A testing program is included in this utility, you can check if your PCI-7248/7296 can work properly. Refer Section 5.2 for further detailed information.

3

Operation Theorem

In this chapter, the operation theorem of the digital I/O, timer, interrupt are introduced. Before programming or applying the PCI-7248/96 cards to your applications, please go through this chapter to understand the features of the functions.

3.1 Digital I/O Ports

3.1.1 Introduction

The PCI-7248 / PCI-7296 can emulate two / four mode 0 configuration of 8255 programmable peripheral interface (PPI) chips. There are 24 DIO signals for every PPI. The PCI-7248 and PCI-7296 has 48 and 96 DIO signals respectively.

3.1.2 8255 Mode 0

The basic functions of 8255 mode 0 are :

• Two 8-bit I/O ports - port A (PA) and port B (PB)
• Two nibble-wide ( 4-bit) ports C - PC upper and PC lower
• Any port can be used as either input or output
• Outputs are latched whereas inputs are buffered <
• 16 different input / output configurations are available

3.1.3 Special Funtion of the DIO Signals

Two I/O signals (PC0 and PC3) of CN1 and CN2 can be used to generate hardware interrupt. Refer to the `interrupt system' section for details about the interrupt control. In addition, the P1C4 signals can be used as input signal of event counter.

3.1.4 Digital I/O Port Programming COLOR="#000000">

3.1.5 Control Word

The control word written in the control port is used to setup PA, PB and PC as input or output port. Fig 3.1 shows the format of the control word. Table 3.1.2 shows the 16 possible control word and the respective I/O configurations .

Figure 3.1 Control Word Format

Control Word	D4	D3	D1	D0	PORTA	PORT C UPPER	PORT B	PORT C LOWER
00H	0	0	0	0	O/P	O/P	O/P	O/P
01H	0	0	0	1	O/P	O/P	O/P	I/P
02H	0	0	1	0	O/P	O/P	I/P	O/P
03H	0	0	1	1	O/P	O/P	I/P	I/P
08H	0	1	0	0	O/P	I/P	O/P	O/P
09H	0	1	0	1	O/P	I/P	O/P	I/P
0AH	0	1	1	0	O/P	I/P	I/P	O/P
0BH	0	1	1	1	O/P	I/P	I/P	I/P
10H	1	0	0	0	I/P	O/P	O/P	O/P
11H	1	0	0	1	I/P	O/P	O/P	I/P
12H	1	0	1	0	I/P	O/P	I/P	O/P
13H	1	0	1	1	I/P	O/P	I/P	I/P
18H	1	1	0	0	I/P	I/P	O/P	O/P
19H	1	1	0	1	I/P	I/P	O/P	I/P
1AH	1	1	1	0	I/P	I/P	I/P	O/P
1BH*	1	1	1	1	I/P	I/P	I/P	I/P

Table 3.1.2 Summary of control word (D0 - D4).

(* power on defalut configuration)

3.1.6 Power On Configuration

The defalut configuration after power on, hardware reset or software reset is to set all ports as input ports, therefore the users won`t worry about damaging the external devices when system is power on. In addition, the default signal level can be pulled high or pulled low by setting the jumpers. Refer to section 2.6 for setting the power on state of the DIO ports.

3.1.7 Note for Output Data

Be careful about the initial condition of dgital output signals. If user set the control word as output port after power on, the previous uncertain output value will be put on the output pins immediately. Therefore, BE SURING TO SET A SAFE OUTPUT VALUE BEFORE SETTING ANY PORT AS OUT PORT.

3.2 8254 Timer / Counter Operation

3.2.1 Introduction

One 8254 programmable timer/counter chip is installed in PCI-7248/7296. There are three counters in one 8254 chip and 6 possible operation modes for each counter. The block diagram of the timer /counter system is shown in Figure 3.2.

Figure 3.2 Timer / counter system of PCI-7248/96.

The timer #1 and timer #2 of the 8254 chip are cascaded as a 32-bits programmable timer. In software library, the timer #1 and #2 are always set as mode 2 (rate generater).

In software library, the counter #0 is used as an event counter, that is, interrupt on terminal count of 8254 mode 0 . Please refer to section 4.4 for programming the timer / counter functions.

3.2.2 Cascaded 32 bits Timer

The input clock frequence of the cascaded timers is 2M Hz. The output of the timer is send to the interrupt system (refer to section 3.3). Therefore, the maximum and minimum watchdog timer interrupt frequency is (2M Hz)/(2*2)=(500K Hz) and (2M Hz)/(65535*65535) respectively.

3.2.3 Event Counter and Edge Control

The counter #0 of the 8254 chip can be used as event counter. The input of counter #0 is PC4 of CN1 (P1C4). The counter clock trigger direction (H to L or Lto H) is programmable. The gate control is always enable. The output is send to interrupt system which named as event IRQ. If counter #0 is set as 8254 mode 0, the event counter IRQ will generate when the counter value is counting down to zero.

3.3 Interrupt System

3.3.1 System Architecture

The PCL-7248/96`s interrupt system is a powerful and flexable system which is suitable for many applications. The system is a Dual Interrupt System. The dual interrupt means the hardware can generate two interrupt request signals in the same time and the software can service these two request signals by ISR. Note that the dual interrupt do not mean the card occupy two IRQ levels.

The two interrupt request signals (INT1 and INT2) are comes from digital input signals or the timer / counter output. An interrupt sources multiplexer (MUX) is used to select the IRQ sources. Fig 3.3.1 shows the interrupt system.

Fig 3.3.1 Dual Interrupt System of PCI-7248/96

3.3.2 IRQ Level Setting

There is only one IRQ level is used by this card, althought it is a dual interrupt system. This card uses INT #A interrupt request siganl to PCI bus. The mother board circuits will transfer INT #A to one of the AT bus IRQ levels. The IRQ level is set by the PCI plug and play BIOS and saved in the PCI controller. It is not necessary for users to set the IRQ level. Users can get the IRQ level setting by software library. Refer the section 4.5.

3.3.3 Dual Interrupt System

The PCI controller of PCI-7248/96 can receive two hardware IRQ sources. However, a PCI controller can generate only one IRQ to PCI bus, the two IRQ sources must be distinguished by ISR of the application software if the two IRQ are all used.

The application software can use the "get_PCI72_irq_status" function to distinguishe which interrupt is inserted. After servicing an IRQ signal, users must check if another IRQ is also assserted, then clear current IRQ to allow the next IRQ coming in.

The two IRQs are named as INT1 and INT2. INT1 comes from P1C0, P1C3 or the event counter interrupt. INT2 comes from P2C0, P2C3 or the timer interrupt. The sources of INT1 and INT2 is selectable by the Interrupt Source Control (ISC) Register.

3.3.4 Interrupt Source Contorl

There are four bits to control the IRQ sources of INT1 and INT2. The Table 3.3.1 shows the selection of the IRQ sources and the interrupt trigger conditions.

If the application need only one IRQ, you can disable one of the IRQ sources by software. If your application do not need any IRQ source, you can disable all the two interrupts. However, the PCI BIOS still assign a IRQ level to the PCI card and occupy the PC resource, if you only disable the IRQ sources without change the initial condition of the PCI controller.

It is not suggested to re-design the initial condition of the PCI card by users` own application software. If users want to disable the IRQ level, user can use the ADLink's utility `INIT7296.EXE' to chage power on interrupt setting.

INT1	D3	D2	D1	D0	IRQ Sources	IRQ Trigger Condition
disable	X	X	0	0	INT1 disable	--
mode 1	X	X	0	1	~P1C0	falling edge of P1C0
mode 2	X	X	1	0	P1C0 OR ~P1C3	(see following)
mode 3	X	X	1	1	Event Counter	Counter count down to 0

INT2	D3	D2	D1	D0	IRQ Sources	IRQ Trigger Condition
disable	0	0	X	X	INT2 disable	--
mode 1	0	1	X	X	~P2C0	falling edge of P2C0
mode 2	1	0	X	X	P2C0 OR ~P2C3	(see following)
mode 3	1	1	X	X	Timer Output	Timer count down to 0

Table 3.3.1 ISC register format

When the IRQ sources is set as "P1C0 OR ~P1C3", the IRQ trigger conditions are summarized in table 3.3.2,

P1/2C0	P1/2C3	IRQ Trigger Condition
High	X	PC0=`H' disable all IRQ
X	Low	PC3=`L' disable all IRQ
Low	1->0	PC3 falling edge trigger when PC0=L
0->1	High	PC0 rising edge trigger when PC3=H

Table 3.3.2 IRQ Trigger conditions

Because the P1/P2C0 and P1/P2C3 are external signals, the applications can utilize the combination of the four signals to generate a proper IRQ.

3.3.5 Self Interrupt Trigger

Although the PCL-7248/96's interrupt signals are normal received from external peripherals. It can also generate a test output signal to emulate an interrupt from an external device. An example program is shown in the diskette for reference.

3.4 12V and 5V Power Supply

The OPTO-22 compatible connectors provide external devices the +12 volts and +5 volts power supply. To aviod short or overload of the power supply, the resetable fuses are added on all the power supply signals. Refer to Figure 2.5.

The maximun current for 5 volts on every connector is 0.5 A. If the load current is larger than 0.5 A, the resistance of ..... fuse will increase because of the temperature rising. The rising resistance will cause the power supply drop and reduce current. If the overload or short condition is removed, the fuse will get to normal condition. It is not nessary to repair or re-install the fuse.

The maximum current of 12 volts for all the four connectors is also 0.5 A. The action of the fuse is the same as which used for +5V power. The limitation is more resitrict than 5V power supply because the PCI bus can not provide large current.

4

C/C++ Software Libraries

In this chapter, the PCI-7248 and PCI-7296 software library, C/C++ language library, for DOS is described.

4.1 Installation

4.1.1 Backup Your Disk

The Utility Software and Library of PCI-7248/7296 are under DOS environment. The drivers are compatible with DOS 3.0 or higher versions. It is advisable to make a back up copy before using the software.

For a direct back up, use the DOS DISKCOPY or alternatively XCOPY *.* to a pre-formatted disk. The back up procedures are specified as follows:

1. Insert "Utility and Library" Diskette into floppy drive A:

2. XCOPY a:*.* b:/s

4.1.2 Installation

The PCI-7248/96's Utility Diskette includes a utility software, C-language library and some demonstration programs which can help you reduce programming work.

You will need to manually copy the contents of diskette to your hard disk. The procedures should be followed as :

1. Turn your PC's power switch on

2. Put the " PCI-7248 Utility & Library " diskette into your floppy drive A: or B:

3. Install for DOS environment

A\> CD\DOS

A:\DOS> SETUP

4.2 Running Testing Utility( 7296UTIL.EXE )

After finishing the installation, you can execute the utility by typing as follows :

C> cd \7296\DOS\UTIL


C> 7296UTIL, or

4.3 Software Driver Naming Convention

The functions of PCI-7248's or PCI-7296's software drivers are using full-names to represent the functions' real meaning. The naming convention rules are :

In DOS Environment :

_{hardware_model}_{action_name}. e.g. _7248_Initial ().


There are 4 functions provided by PCI-7248 software drivers.

The detail descriptions of each function are specified in the following sections.

4.4 _7248/96_Initial

@ Description
The PCI-7248 or PCI-7296 cards are initialized by this function. The software library could be used to control multiple PCI-7248 cards. Because PCI-7248 is in PCI bus architecture and meets the plug and play specifications, the IRQ and I/O adddress are assigned by system BIOS directly.

@ Syntax

(for PCI-7248)
U16 _7248_Initial(U16 *existCards, PCI_INFO *pciInfo )
(for PCI-7248)
U16 _7296_Initial(U16 *existCards, PCI_INFO *pciInfo )

@ Argument :

existCards : The numbers of installed PCI-7248/7296 cards. The returned value shows how many PCI-7248/7296 cards are installed in your system.

pciinfo: It is a structure to memorize the PCI bus plug and play initiallization information which is decided by p&p BIOS. The PCI_INFO structure is defined in PCI_7248.H or PCI_7296.H. The base I/O address and the interrupt channel number is stored in pciinfo which is for reference.

@ Return Code :


U16 means unsigned short integer

ERR_NoError
ERR_PCIBiosNotExist

4.5 _7248/96_DI

@ Description


This function is used to read 8-bit digital inputs data from digital input port. You can get the 8 bits data from _7248_DI by using this function.

The written data and read in data is 8 bits data. Each data is mapped to a signal as the table below.

D7	D6	D5	D4	D3	D2	D1	D0
PA7	PA6	PA5	PA4	PA3	PA2	PA1	PA0
PB7	PB6	PB5	PB4	PB3	PB2	PB1	PB0
PC7	PC6	PC5	PC4	PC3	PC2	PC1	PC0

@ Syntax

(for PCI-7248)
U16 _7248_DI( U16 cardNo, U16 channelPort, U16 *diData )
(for PCI-7296)
U16 _7296_DI( U16 cardNo, U16 channelPort, U16 *diData )

@ Argument :

cardNo : card number to select borad

channelPort : port of each channel
PCI_CH0_PA : CH1's Port A
PCI_CH0_PB : CH1's Port B
PCI_CH0_PC : CH1's Port C
PCI_CH0_PCU : CH1's Port C Upper Nibble
PCI_CH0_PCL : CH1's Port C Low Nibble
PCI_CH1_PA : CH2's Port A
PCI_CH1_PB : CH2's Port B
PCI_CH1_PC : CH2's Port C
PCI_CH1_PCU : CH2's Port C Upper Nibble
PCI_CH1_PCL : CH2's Port C Low Nibble
PCI_CH2_PA : CH2's Port A
PCI_CH2_PB : CH2's Port B
PCI_CH2_PC : CH2's Port C
PCI_CH2_PCU : CH2's Port C Upper Nibble
PCI_CH2_PCL : CH2's Port C Low Nibble
PCI_CH3_PA : CH3's Port A
PCI_CH3_PB : CH3's Port B
PCI_CH3_PC : CH3's Port C
PCI_CH3_PCU : CH3's Port C Upper Nibble
PCI_CH3_PCL : CH3's Port C Low Nibble

Note : CH2 and CH3 are only available for PCI-7296 card only.

diData : return 8-bit value from digital port.

@ Return Code :

ERR_NoError

4.6 _7248/96_DO

@ Description
This function is used to write data to digital output ports. There are 6 digital outputs ports ( P1A, P1B, P1C, P2A, P2B, P2C) could be configure as digital output channel on the PCI-7248,

@ Syntax

(for PCI-7248)
U16 _7248_DO(U16 cardNo, U16 channelPort, U8 do_data )
(for PCI-7296)
U16 _7296_DO(U16 cardNo, U16 channelPort, U8 do_data )

@ Argument :

cardNo : card number to select borad channelPort :
channelPort : port of each channel
PCI_CH0_PA : CH1's Port A
PCI_CH0_PB : CH1's Port B
PCI_CH0_PC : CH1's Port C
PCI_CH0_PCU : CH1's Port C Upper Nibble
PCI_CH0_PCL : CH1's Port C Low Nibble
PCI_CH1_PA : CH2's Port A
PCI_CH1_PB : CH2's Port B
PCI_CH1_PC : CH2's Port C
PCI_CH1_PCU : CH2's Port C Upper Nibble
PCI_CH1_PCL : CH2's Port C Low Nibble
PCI_CH2_PA : CH2's Port A
PCI_CH2_PB : CH2's Port B
PCI_CH2_PC : CH2's Port C
PCI_CH2_PCU : CH2's Port C Upper Nibble
PCI_CH2_PCL : CH2's Port C Low Nibble
PCI_CH3_PA : CH3's Port A
PCI_CH3_PB : CH3's Port B
PCI_CH3_PC : CH3's Port C
PCI_CH3_PCU : CH3's Port C Upper Nibble
PCI_CH3_PCL : CH3's Port C Low Nibble

Note : CH2 and CH3 are only available for PCI-7296 card only.

do_data : value will be written to digital output port

@ Return Code :

ERR_NoError

4.7 _7248/96_Config_Port

@ Description
This function is used to configure the Input or Ouput of each Port. Each I/O channel of PCI-7248 is either input or output, so it has to configure as input or output before I/O operations are applied.




@ Syntax

( For PCI-7248)
U16 _7248_Config_Port(U16 cardNo, U16 channelPort,
U16 direction )
( For PCI-7296)
U16 _7248_Config_Port(U16 cardNo, U16 channelPort,
U16 direction )

@ Argument :

cardNo : card number to select borad channelPort :
channelPort : port of each channel
PCI_CH0_PA : CH1's Port A
PCI_CH0_PB : CH1's Port B
PCI_CH0_PC : CH1's Port C
PCI_CH0_PCU : CH1's Port C Upper Nibble
PCI_CH0_PCL : CH1's Port C Low Nibble
PCI_CH1_PA : CH2's Port A
PCI_CH1_PB : CH2's Port B
PCI_CH1_PC : CH2's Port C
PCI_CH1_PCU : CH2's Port C Upper Nibble
PCI_CH1_PCL : CH2's Port C Low Nibble
PCI_CH2_PA : CH2's Port A
PCI_CH2_PB : CH2's Port B
PCI_CH2_PC : CH2's Port C
PCI_CH2_PCU : CH2's Port C Upper Nibble
PCI_CH2_PCL : CH2's Port C Low Nibble
PCI_CH3_PA : CH3's Port A
PCI_CH3_PB : CH3's Port B
PCI_CH3_PC : CH3's Port C
PCI_CH3_PCU : CH3's Port C Upper Nibble
PCI_CH3_PCL : CH3's Port C Low Nibble

Note : CH2 and CH3 are only available for PCI-7296 card only.


direction : port I/O direction
INPUT_PORT : the port is configure as INPUT
OUTPUT_PORT : the port is configure as OUTUT

@ Return Code :

ERR_NoError

This chapter describes the software library for operating the PCI-7248/96 cards. The software is in C language and can be used under DOS environment. The functions protorype and some useful constants are defined in the "PCI72.H".

4.8 Reset PCI-7248/96 cards

@ Description :


This function is used to reset the I/O port configuration. After reset PCI-7248/96, all the ports will be set as input ports. Note that this function can not re-start the PCI bus and all the hardware setting won`t be change neither.

@ Syntax :


(for PCI-7248)

void _7248_Software_Reset( U16 cardNo)

(for PCI-7296)

void _7296_Software_Reset( U16 cardNo)

@ Argument :


cardNo : card number which the DIO will be reseted.

@ Return Code :


ERR_No ERROR


 

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