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

LCDCmd

Description:

This is a USBm.dll function that writes a command to the LCD. The RS, RW, E lines and the data port are selected by the InitLCDCmd. The data byte is written to the selected port and the control lines are set appropriately. The E line is toggled for five to eight microseconds.

 

Command Syntax: (USBm.dll)

USBm_LCDCmd(device, data)

The USBm_LCDCmd function syntax has these parts:

Part Description
device A zero-based index to address the appropriate USB device.
data The value to transfer to the LCD command register.

 

Remarks:

 

VB Declaration

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

 

VB Example

USBm_LCDCmd 2, &H33

This code fragment will write the command byte of &H33 to the LCD command register connected to device 2.

 

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