Dear Daniel,

In tinyos 1.x  the packet include bytes for syncronization each frame (7E). I`m 
use  Dockligth hiperterminal for this task. http://www.docklight.de/

Example:

7E      42      2C      01      08      00      FF      FF      FF      FF      
0F      9D      02      00      00      00      00      00      09      00      
00      00      00      07      03      01      F0      86      7E      7E      
00

The crc is: F0 86

the crc calcule only include:

42      2C      01      08      00      FF      FF      FF      FF      0F      
9D      02      00      00      00      00      00      09      00      00      
00      00      07      03      01


Jorge Higuera
http://isi.upc.es


> ------------------------------
> 
> Message: 2
> Date: Thu, 18 Dec 2008 19:53:24 +0000
> From: "[email protected]"
> <[email protected]>
> Subject: [Tinyos-help] Java (TestSerial) packet format
> To: [email protected]
> Message-ID: <[email protected]>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
> 
> Hi everybody,
> 
> We have successfully manage to communicate with base
> station mote using
> java support. But what we really want to do is communicate
> with the base
> station using matlab. For that we are trying to understand
> the packet
> format that java is sending to the motes, so that we can
> try sending it
> in matlab.
> 
> We print the message sent with java, and this is what we
> get:
> 
> 01 00 00 04 00 07 00 01 00 00
> 
> Destination address: 01
> Source address: 00 00
> Message Lenght: 04
> Group ID: 00
> Data Type: 07
> Payload: 00 01 00 00
> 
> Does java send the packet with crc bytes?
> We are not able to send with the fwrite command in
> matlab?Why is that
> so?Is it packet format?Some serial configuration?
> 
> Thanks in advance,
> Daniel Jorge
> 
> 



      

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