TimeOut Serial Port

[Steffen]

Hello!

I'm excanging data with an microcontroller (Atmel) via the serial port.

My C++ programm is written in Microsoft Visual Studio .net (7)
I have the following problem:

If I disconnect my controller, then the programm hangs up in the following
line:
WaitCommEvent (m_hCommPort, &dwEvtMask, 0);

Of course it does - but I need to get a TimeOut. After 50 ms the function
should quit and return an timeout message.

Can anybody help me? Would really be great.
Thank you in advance!
Best regards
Steffen

 

[Victor Bazarov]

I'm excanging data with an microcontroller (Atmel) via the serial port.

My C++ programm is written in Microsoft Visual Studio .net (7)
I have the following problem:

If I disconnect my controller, then the programm hangs up in the following
line:
WaitCommEvent (m_hCommPort, &dwEvtMask, 0);

Of course it does - but I need to get a TimeOut. After 50 ms the function
should quit and return an timeout message.

Can anybody help me? Would really be great.

AFAICT, 'WaitCommEvent' is not a standard C++ function. Your best bet is
to ask about it in a newsgroup dedicated to your OS or your compiler. For
VC++.NET try comp.os.ms-windows.programmer.* or microsoft.public.vc.*

V

 

[Steffen]

Thank you very much!
I will try it in an other newsgroup.

Steffen