Online Development Notebook > Index > ODN > USBm DLL Programming > Device Commands > WriteB

WriteB

Description:

This is a USBm.dll function that writes a byte value to port B. The possible values range from 0-255 (00h to FFh).

 

Command Syntax: (USBm.dll)

USBm_WriteB(device, data)

The USBm_WriteB function syntax has these parts:

Description Description
device A zero-based index to address the appropriate USB device.
data Byte to write to Port B.

 

Remarks:

 

 

 

VB Declaration

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

 

VB Example

USBm_WriteB 7, &H0F

This code fragment writes the value of &H0F to port B of device 7.

 

C Example

-TBD-

Hardware:  U401 USB Interface    U421 USB Interface
Programming:  USBm DLL Programming    Download Files
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