🚀 go-pugleaf

You don't need the second createfile and in fact it won't work as it's 
already open
You just change the baud rate.
(It's the same as opening a file that's already open - it can't be done!)
Note that closePort leaves the handle returned from CreateFile still open.
HTH Pete

"Max Blank" <MaxBlank@MaxBlank-Institute.net> wrote in message 
news:4190dcd2$1@newsgroups.borland.com...
>> So psuedo code is:
>> CreateFile
>>   Set baud rate to 9600
>>   openPort
>>   try to find device
>>   if it fails
>>     close port
> -->   CreateFile ???   <----------------
>>     set baud rate to 19200
>>     try to find device
>>     if it fails
>>       close port
>
>
> What I do is almost exactly what you suggested, except that I perform a
> second CreateFile() as shown above. Actually, the following happens:
>
> Scenario 1:
>
>     CreateFile for COM8
>       Set baud rate to 9600
>       OpenPort
>       Try to find device -> fails, as expected
>       Close Port
>     CreateFile for COM8  => fails !!!
>
>
> Scenario 2:
>
>     CreateFile for COM8
>       Set baud rate to 19200
>       OpenPort
>       Device Found ...
>       Close Port
>
>
> The second CreateFile on the same port seems to fail. However, if I stop 
> the program's execution shortly, and then continue, everything works fine 
> like this:
>
> Scenario 3:
>
>     CreateFile for COM8
>       Set baud rate to 9600
>       OpenPort
>       Try to find device -> fails, as expected
>       Close Port
>     CreateFile for COM8  -> succeeds !!
>       Set baud rate to 19200
>       OpenPort
>       Device Found ...
>       Close Port
>
>
> That's annoying !
>
>
> Max
>