Support: GPIO Interfaces

English

Allgemeine GPIO-Informationen

GPIO: Prinzipielle Funktionsweise (Seite in englischer Sprache)

Getting started with TAMS GPIO Interfaces (pdf-Dokument in englischer Sprache)

Using SICL with GPIO (pdf-Dokument in englischer Sprache)

Wie überprüfe ich die SICL-Installation?

GPIO für Windows

Wie werden TAMS GPIO Interfaces unter Windows angesprochen? (Dokument in Englisch)

First of course you have installed the drivers from the floppy disk, and SICL is installed, and also BASIC is installed. Also you have to configure the interfaces within SICL.

NOTE for systems with more than one of each type of card:

Each interface needs to be associated with its own file in the HP BASIC directory (typically C:\Hpbasic). The system starts out with one copy of HPIBS.dw6 and one copy of GPIOS.dw6. If you have two HPIB interfaces, you will need to make a copy of the HPIBS.dw6 file for the second card. It must have the .dw6 extension, but it can have any name. It is often easiest to name this file in a way that identifies which interface it will be used with. For instance, if you have an interface with a logical number 7 and have named it hpib7, you might want to associate it with a copy of HPIBS. dw6 that is called HPIBS7.dw6; vary it to best suit your needs. The same procedure holds for GPIOS.dw6 files.

Associating the driver with the interface in BASIC

Before the card can be used, you must associate the .dw6 driver with the SICL name. You have the option of specifying what select code you would like to use. The binary must loaded exactly once each time the BASIC window is invoked, so it is a good idea to write an AUTOST program that loads the binary. However, the loading can be done from the command line, or from within an application program.

From the command line, to load an HPIB interface (where there is only one), type:

LOAD BIN "HPIBS;DEV hpib7 ISC 7"

If the command completed, you will see a confirming message indicating the HPIBS driver and version. Otherwise you will get an error.

Note:

Substitute the logical name you gave the interface in the SICL configuration utility, if it is not set to hpib7.

Likewise, to load the driver for the GPIO interface, you might type

LOAD BIN "GPIOS;DEV gpio ISC 12"

Again, you will either get an error or you will see confirmation that a binary was loaded.

Once the binaries are loaded, they are not needed again as long as the BASIC window is open. When it is closed and reopened, they need to be added. Therefore, it makes sense to write an AUTOST routine, like this one:

10 ! "AUTOST"

20 LOAD BIN "HPIBS;DEV hpib7 ISC 7"

30 LOAD BIN "GPIOS;DEV gpio ISC 12"

This program can be saved or stored in the same HPBASIC directory.

Tabelle der STATUS- und CONTROL-Register (Englisch)

Some customers may be porting programs with READIO/WRITEIO statements for the 98622. These statements are NOT supported on the 62622, 61622, or 60622 interfaces in HTBasic. BASIC documentation has always recommended the use of STATUS and CONTROL registers, which are not hardware specific, so as to avoid future hardware incompatibilities. READIO/WRITEIO statements were hardware specific, but many programmers used these commands anyway. Click here to see READIO/WRITEIO register information specifically for the HP98622. (Status/Control equivalents are listed where available.)

ENABLE INTR MASK for GPIO

Bits 7-2	Bit 1	Bit 0
Not Used	Enable Interface Ready Interrupts	Enable EIR Line Interrupts

STATUS/CONTROL REGISTERS for GPIO

STATUS Example:

10 INTEGER I

20 STATUS 12,0;I

30 IF I=3 THEN PRINT "GPIO IDENTIFIED"

CONTROL Example:

100 CONTROL 12,0;1

REGISTERS Table

Register	Status Register (you read these)	Meaning	Control Register (you write to these)	Meaning
0	Card Identification	Always 3	Interface Reset	Any nonzero sent here resets the interface.
1	Interrupt and DMA Status	See Table Below	Set PCTL Line	Any nonzero sent here sets the line. However, you must disable auto handshaking first. See Register 6.
2	Interface Activity	See Table below	Peripheral Control	See Table Below
3	Data in: 16 Bits	DI15-DI0	Data out: 16 Bits	DO15-DO0
4	Interface Ready (for next handshake)	1=Ready 0=Busy	(undefined)	(undefined)
5	Peripheral Status	See table below	(undefined)	(undefined)
6	Handshake Mode	Bit 1: enhanced mode enabled	Auto handshaking	Setting bit 0: enables auto handshaking. Clearing bit 0 disables auto handshaking. This must be done before taking control of PCTL, for instance.

Status Register 1: Interrupt and DMA Status

7	6	5	4	3	2	1	0
Interrupts are enabled	An interrupt is currently requested	Interrupt level switches	Interrupt level switches	Burst mode DMA	Word mode DMA	DMA channel 1 enabled	DMA channel 2 enabled

Status Register 2: Interface Activity

7	6	5	4	3	2	1	0
0	0	0	0	0	Handshake in process	Interrupts are enabled	Transfer in progress

Status Register 5 Peripheral Status

7	6	5	4	3	2	1	0
0	0	0	0	PSTS Ok	EIR Line Low	STI1 line low	STI0 line low

Status Register 255: Burst I/O and Lock State

Value = 0	Interface unlocked, Burst disabled
Value = 1	Interface Locked
Value = 3	Burst I/O Enabled

Control Register 2: Peripheral Control

Not Used

PSTS error

1=report

0=ignore

Set CTL1

1=LO

0=HI

Set CTL0

1=LO

0=HI

Control Register 255: Burst and Locking

Send value 0	Disable Burst I/O, Disable interface locking
Send Value=1	Enable Interface Locking
Send Value=3	Enable Burst I/O

Interpretieren der READIO/WRITEIO Register für 98622A (Englisch)

Wie konfiguriere ich ein TAMS 6x622 Interface mit 98622A Standard-Einstellungen?

The 98622 card came setup from factory in three different flavors, depending of what was attached to the GPIO card:

GPIO to 6940B (Multiprogrammer)

PCTL --> Low=Set

PFLG --> High=Ready

PSTS --> High = OK

HSHK --> Full

DOUT --> High = 0

DIN --> High = 0

Read Clock --> Read

GPIO to 9866 (printer)

PCTL --> Low=Set

PFLG --> High=Ready

PSTS --> High = Not OK

HSHK --> Full

DOUT --> High = 0

DIN --> High = 0

Read Clock --> DON'T CARE it is a printer!

GPIO to 9885 (disc)

PCTL --> Low=Set

PFLG --> Low=Ready

PSTS --> High = Not OK

HSHK --> Full

DOUT --> High = 0

DIN --> High = 0

Read Clock --> Busy

Out of these three the one chosen for Windows by default is the first one (Multiprogrammer). It is the most common setup for GPIO applications. Also, there are other configurable parameters in the card that can be programmed as well, and

the default values in Windows are:

Pull-up resistors = ON (Useful for customers running BASIC when there are not pull-up resistors

provided by the external hardware)

Clear DOUT at Reset = not checked (equivalent to DOUT Clear jumper not installed)

PCTL Delay = 400 nsec (original default value 250 nsec, 400 nsec is more conservative.)

Data Port = Compatibility (98622 operation mode)

Logical Unit = 12

Interface Name = gpio

In the TAMS GPIO card, there is no equivalent to the configuration jumper for BURST mode found in the

HP98622.

However, this is not a problem because, the TAMS GPIO card always chooses the best method to transmit data (with or without DMA, depending on hardware limitations or hint argument used in ihint)

The following is an example of the 61622 configuration dialog box in Windows with the default values.

Mehrere TAMS HPIB/GPIO Interfaces unter Windows verwenden

Using HTBasic for Windows NT4/2000/XP, you should not have any problems using multiple HPIB and/or GPIO

There are, however, a few things you need to do to insure a successful installation.

You must install the Agilent IO Libraries before continuing!

The IO Libraries are included on the HTBasic disc. [HTBASIC/SICL/Setup.exe]

Installation Procedure for Windows XP, 2000 & NT4

Install HPIB Cards

Install the 60488 HPIB cards into the system, then install the 60488 Windows driver that is appropriate for your OS. You only need to perform the driver installation once.

Reboot and make sure you can see the cards in the Device Manager under TAMS GPIB interfaces. Device Manger is not available in NT4. [Right click My Computer --> Properties --> Hardware --> Device Manger]

Install GPIO Cards

Before installing any 61622 GPIO cards, please assign a different ID number to each GPIO card, by using the ID Switch

on the card.

Install the 61622 GPIO cards into the system, then install the 61622 Windows driver that is appropriate for your OS. You only need to perform the driver installation once.

Reboot and make sure you can see the cards in Device Manager (2000/XP only) under TAMS GPIO interfaces. The system will take a while to reboot because the plug and play manager needs to enumerate all GPIO cards one by one. Once it is done, the next time you boot, the machine will boot normally.

Run IOconfig

After you have installed all the cards, run IOconfig and give a unique name and address to each HPIB and GPIO card in your system.

Copy hpibs.dw6 file

For each 60488 HPIB card, you need to create an incremental copy of the file named hpibs.dw6 in the HTBasic directory.

1st HPIB Card = hpibs.dw6

2nd HPIB Card = hpibs1.dw6

3rd HPIB Card = hpibs2.dw6

etc.

Then, when you load the HPIB cards in HTBasic, you need to load each card's HPIBS:

load bin "HPIBS ..........."

load bin "HPIBS1.........."

load bin "HPIBS2.........."