[Tinyos-help] serial comm problem

[Faisal Aslam]

 > In my application i need two apps to communicate with serail port : 
one for listening and one for sending message.

The TestSerial do something similar. The packets are being send and 
received by only one application. Hence are using "single entry point" 
by two applications on the PC.

I think if two applications are trying to acquire a same port then it 
might not work. Just like you cannot use two Java applications running 
simultaneously and writing in a same file. It is because each 
application might  locks the file to access it. The better solution is 
that two application use a common access/entry point for the different 
application.
I might be wrong but that is my take on it.

Faisal

chikh omar wrote:
> following lesson 4: Mote-pc serial comm
> When I try to run :
> $ java net.tinyos.tools.Listen
> on a cygwin window
> and
> $java TestSerial
> on another cygwin window I got the following error:
> serial at COM10:115200 <mailto:serial at COM10:115200> died - exiting 
> (java.io.IOException: Could not open COM10: TOSComm JNI library 
> runtime erro
> r: Error 5.
>    Accés refusé.
>    in NativeSerialPort.CreateFile)
>  
> I understand that it is an refused acces problem. But in my 
> application i need two apps to communicate with serail port : one for 
> listening and one for sending message.
>  
> Any help please.
>
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> Omar Cheikhrouhou
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