Online Development Notebook > Index > ODN > USBm DLL Programming > Device Commands > StrobeRead2

StrobeRead2

VERSION 1.34+ of the firmware, VERSION 42+ of the DLL

Description:

StrobeRead with strobe pulse length.

 

Command Syntax: (USBm.dll)

USBm_StrobeRead2(device, data, port, sel, len)

The USBm_StrobeRead2 function syntax has these parts:

Part Description
device A zero-based index to address the appropriate USB device.
data The function causes this variable to be changed to the value of the port.
port The port for the byte read. A value of 00h is port A, a value of 01h is port B.
sel The strobe direction and the strobe line selection.
len The strobe length.
del The delay between multiple bytes. VERSION 1.46+ of the firmware, VERSION 56+ of the DLL

 

Remarks:

Same as StrobeRead, but "len" is the strobe length from about 10 microseconds to about 200 microseconds. Tha value of "del" is the delay between bytes.

 

VB Declaration

Public Declare Function USBm_StrobeRead2 _
    Lib "USBm.dll" _
        (ByVal device As Byte, _
        ByRef data As Byte, _
        ByVal port As Byte, _
        ByVal sel As Byte, _
        ByVal len As Byte) _
        ByVal del As Byte) _
   As Integer

 

VB Example

Dim data As Byte
    USBm_StrobeRead2 1, data, 0, &H0F, 20, 40

The "20" selects a longer strobe pulse, th 40 is a greater delay between bytes.

 

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