Online Development Notebook > Index > ODN > USBm DLL Programming > DLL Commands > DeviceDID

DeviceDID

Description:

This is a USBm.dll function that returns the Device ID from a USB device.

 

Command Syntax:

number USBm_DeviceDID(device )

The USBm_DeviceDID function syntax has these parts:

Part Description
device Valid device from 0 to the maximum number of devices found (minus 1) . Any other number results in a FALSE return.

 

Remarks:

Note: USBm_DeviceDID returns FALSE for an invalid device, otherwise the return value is the device DID

 

VB Declaration (USBmAPI.bas)

Public Declare Function USBm_DeviceDID _
    Lib "USBm.dll" _
        (ByVal device As Byte) _
    As Integer

 

VB Example

Dim result As Integer

    result = USBm_DeviceDID

This code fragment shows that result is loaded with the DID of the device, or with FALSE if the device does not exist.

 

C Example

-TBD-

Hardware:  U401 USB Interface    U421 USB Interface
Programming:  USBm DLL Programming    Download Files
Application Notes:  U4x1 Application Notes    Misc Applications and Information    FAQ