[Lazarus] SdpoSerial port open problems

[Paulo Costa]

On 09/02/2011 23:12, Bo Berglund wrote:

> I have tested the program now in the original development PC (a VMWare
> virtual XP-Pro machine) and my Win7X64 laptop and as long as I use a
> physical com port all seems to work OK. In the virtual machine it
> means mapping the laptop docking station COM1 into the VM. THen it
> works just fine.
>
> But when I involve a USB connected serial port (which I have to do if
> I undock my laptop) I get all kinds of strange errors, basically no
> communications at all! I have two different ones but both are
> problematic (ATEN RS232USB and SUNIX 4-port ComHub).
>
> Do you know of any problems related to SynaSer via USB connected RS232
> adapters on Windows7 or WindowsXP?
>
> Right now I am moving the Lazarus application around to different
> computers (real and virtual) and different COM ports (real or USB
> connected) to try to figure out why it is so hard making it always
> work. And this is when I found that I tried ports that were already
> reserved for the virtual machine or actually unplugged without
> SdpoSerial saying anything about it....

Please test your ports with:

http://paginas.fe.up.pt/~paco//AVR-IO-M16/M16_PC.zip

and see if the problem also appears with this application.

Paulo Costa