by Robert Frank » Thu May 12, 2011 8:25 am
OpenPort() return handle of port
try:
COM_OPEN(1)
COM_OPEN(2)
Be sure that you have both of com ports installed in operating system
Function COM_OPEN(xPORT)
Local pNAME
Local nError,cDCB
Local xRESZTA:=.T.
Do Case
Case xPORT=1
pNAME:="COM1"
Case xPORT=2
pNAME:="COM2"
Case xPORT=3
pNAME:="COM3"
Case xPORT=4
pNAME:="COM4"
Case xPORT=5
pNAME:="COM5"
Case xPORT=6
pNAME:="COM6"
Case xPORT=7
pNAME:="COM7"
Case xPORT=8
pNAME:="COM8"
Case xPORT=9
pNAME:="COM9"
EndCase
hPORT:= OpenComm( pNAME, 2048, 2048 )
If ! BuildCommDcb( pNAME+cSPEED, @cDcb )
nError = GetCommError( hPORT )
MsgInfo( "BuildCommDcb Error: " + Str( nError ) )
xRESZTA:=.F.
EndIf
If ! SetCommState( hPORT, cDcb )
nError = GetCommError( hPORT )
MsgInfo( "SetCommState Error: " + Str( nError ) )
xRESZTA:=.F.
EndIf
If xRESZTA
oWND:oMSGBAR:cMSGDEF:=PNAME+" : Opened"
oWND:oMSGBAR:Refresh(.T.)
Else
oWND:oMSGBAR:cMSGDEF:=PNAME+" : Error"
oWND:oMSGBAR:Refresh(.T.)
EndIf
Return xRESZTA
Robert Frank