ReadDevice

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

ReadDevice

Description:

This is a USBm.dll function that reads raw bytes from a device.

Command Syntax:

true⁄false USBm_ReadDevice(device, array)

The USBm_ReadDevice 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.
array	Series of eight bytes read from device.

Remarks:

Note: USBm_ReadDevice returns TRUE if the device is successfully read.

VB Declaration (USBmAPI.bas)

Public Declare Function USBm_ReadDevice _
    Lib "USBm.dll" _
        (ByVal device As Byte, _
        ByRef data As Byte) _
    As Integer

VB Example

Dim InBuffer(10) As Byte

USBm_ReadDevice 2, InBuffer(0)

This code fragment shows reading a series of bytes from device two. The bytes would follow the "raw" command format.

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