ADU  Series - USB Data Acquisition Interface SDK 

OpenAdu232BySerialNumber

This functions searches for any ADU device attached to the computer that matches the serial number. The function opens the first ADU device that matches and passes back a handle to it.

The handle value must be retained by the calling program and used with all subsequent ReadAdu232, WriteAdu232 and CloseAdu232 function calls.

Note that the serial number of a ADU device is unique so only one device will match.

C Declaration:

void * __stdcall OpenAdu232BySerialNumber(const char* psSerialNumber,
unsigned long iTimeout);

Visual Basic Declaration:

Declare Function OpenAdu232BySerialNumber Lib "AduHid.DLL" _
(ByVal sSerialNumber As String, _
ByVal iTimeout As Long) As Long

Arguments:

Argument Type Value Description
psSerialNumber char * non 0 pointer to serial number string
iTimeout unsigned long 0 timeouts disabled
other timeout processing enabled


Any non-zero iTimeout value will enable timeout handling. The actual timeout period is passed into the ReadAdu232 and WriteAdu232 function calls.

Return Codes:

Value Description
INVALID_HANDLE_VALUE pipe was not opened
0 pipe was not opened
other Handle to the ADU RS232 pipe