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

DevicePID

Description:

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

 

Command Syntax:

number USBm_DevicePID(device)

The USBm_DevicePID 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_DevicePID returns FALSE for an invalid device, otherwise the return value is the device PID

 

VB Declaration (USBmAPI.bas)

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

 

VB Example

Dim result As Integer

    result = USBm_DevicePID

This code fragment shows that result is loaded with the PID 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
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