User manual

7 Chapter 1
The example source codes could be found under the corresponding instal-
lation folder such as the default installation path:
\Program Files\Advantech\ADSAPI\Examples
For information about using other function groups or other development
tools, please refer to the Creating Windows 98/2000/XP Application with
Device Driver chapter and the Function Overview chapter in the Device
Driver’s Manual.
1.5.2 Programming with Device Drivers Function Library
Advantech Device Drivers offers a rich function library to be utilized in
various application programs. This function library consists of numerous
APIs that support many development tools, such as Visual C++, Visual
Basic, Delphi and C++ Builder.
According to their specific functions or services, those APIs can be
categorized into several function groups:
• Digital Input/Output Function Group
• Port Function Group (direct I/O)
• Event Function Group
For the usage and parameters of each function, please refer to the Func-
tion Overview chapter in the Device Drivers Manual.
1.5.3 Troubleshooting Device Driver Error
Driver functions will return a status code when they are called to perform
a certain task for the application. When a function returns a code that is
not zero, it means the function has failed to perform its designated func-
tion. To troubleshoot the Device Drivers error, you can pass the error
code to DRV_GetErrorMessage function to return the error message. Or
you can refer to the Device Drivers Error Codes Appendix in the Device
Drivers Manual for a detailed listing of the Error Code, Error ID and the
Error Message.