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© Sealevel Systems, Inc.
8006H Manual | SL9023H 9/2021
Programming the ISO-16.PCI
Sealevel’s SeaI/O software is
provided to assist in the development of reliable applications for the Sealevel
Systems family of digital I/O adapters. The software also includes driver functions for use in accessing
the I/O as well as helpful samples and utilities.
Programming for Windows
The SeaI/O API (Application Programmer Interface) provides a variety of useful high-level function
calls implemented in a Windows dynamic link library (DLL). The API is defined in the help file
(Start/Programs/SeaIO/SeaIO Help) under “Application Programmers Interface”. This help file
also includes detailed information dealing with installation / removal of the software and
information about latency, logic states, and device configuration.
For C language programmers we recommend using the API to access the ISO-16.PCI. If you are
programming in Visual Basic, using the ActiveX control included with SeaI/O is advised.
Samples and Utilities
A variety of sample programs and utilities (both executable and source code) are included with
SeaI/O. Further documentation on these samples can be found by selecting
“Start/Programs/SeaI
/
O/Sample Application Description”. Information about where the files are
physically stored on your disk is also included in this same file.
Programming for Linux
SeaI/O for Linux consists of two major parts: a kernel module and a library. The kernel module is a
simple IO pass-through device, allowing the library to handle the more sophisticated functions
provided to SeaI/O users. It is provided in a ‘tarball’ format and can easi
ly be compiled and included
in the kernel build.
Digital I/O Interface
The ISO-16.PCI
provides two parallel input ports. Port A and B are interfaced to optically isolated
inputs. Assuming an I/O address of 300 Hex the following table shows the Port Addresses.
Base Address
Hex
Decimal
Mode
Port A Address
300
768
Port B Address
301
769
Input Port
