Manual ETH-DIO-48
13
Chapter 5: Programming
Client API
To install the client, simply copy AIOETHW.dll next to the program that will use it, or to the
32-bit system directory.
The general sequence to use it is:
AEW_Connect() to open a connection.
AEW_DIO_Configure() to set the initial digital input vs output configuration, and
disable the tristate.
Repeated I/O calls, using AEW_DIO_WriteAll()/AEW_DIO_Write1(),
AEW_DIO_ReadAll().
AEW_Disconnect() to close the connection when done.
If the connection fails during operation, a new connection can be swapped in, like this:
AEW_Disconnect() to close the old connection.
AEW_Connect() to open a new connection.
Resume with the I/O calls.
The following is a brief reference of common AIOETHW.dll functions.
AEW_Connect()
AEW_Connect() connects to the specified host device. It returns a client reference (like a
handle) that represents the connection, or zero on a failure.
AEW_Disconnect()
AEW_Disconnect() disconnects a client reference, closing the connection and cleaning up
any memory used. After being passed to AEW_Disconnect(), the client reference is invalid.
AEW_GetStatus()
AEW_GetStatus() reads the device's status block.
AEW_DIO_Configure()
AEW_DIO_Configure() sets the direction of the DIO bytes, writes to all of them, and then
disables the tristate. Writes to input bytes are ignored.
AEW_DIO_WriteAll()
AEW_DIO_WriteAll() writes to all the DIO.
AEW_DIO_ReadAll()
AEW_DIO_ReadAll() reads from all the DIO.
For a complete AIOETHW.dll API reference please refer to the HTML API reference
installed in your software directory.
