[Tinyos-devel] DelugeT2 and MIB600, serialforwarder

[Razvan Musaloiu-E.]

Hi!

Thanks for the patch! There is one thing I would like to warn about: the 
serial upload protocol for Deluge T2 doesn't use any user level acks and 
the SF TCP protocol doesn't indicate the failure of a failure of a serial 
write. I argue for adding support for this as part of this thread:
 	https://www.millennium.berkeley.edu/pipermail/tinyos-devel/2008-June/thread.html#3052

Because of this limitation I stop trying to made Deluge T2 work using 
the SF protocol.

Note: a good news is that MIG600 is using a serial speed of 57600 which 
should make serial writer failure very infrequent. :-)

--
Razvan ME

On Thu, 21 Aug 2008, Vincent Borrel wrote:

> Hi,
>
> I have been trying to get Deluge T2 to work with an MIB600 programming board.
>
> I finally managed to get it to work using a serialforwarder (on default port 
> 9002), and adding two modifications:
>
> in $TOSROOT/tinyos-2.x/support/sdk/python/tos.py, I added the timeout 
> parameter to SFClient.write()
> @line 713
>   def write(self, payload, timeout):
> instead of
>   def write(self, payload):
> (hoping it doesn't break havoc, which normally shouldn't)
>
>
> the python script tos-deluge has also been modified. Here is the diff:
>
> 402,403c402,403
> <     if sys.argv[2] == 'sf':
> <         baudrate = 0
> ---
>>     if sys.argv[2] in BAUDRATES:
>>         baudrate = BAUDRATES[sys.argv[2]]
> 405,428c405,417
> <       if sys.argv[2] in BAUDRATES:
> <           baudrate = BAUDRATES[sys.argv[2]]
> <       else:
> <           try:
> <               baudrate = int(sys.argv[2])
> <           except:
> <               print "ERROR: Wrong baudrate"
> <               sys.exit(-1)
> <
> <     # Initializes serial or serialforwarder port communication
> <     if baudrate == 0:
> <       try:
> <           s = tos.SFClient(sys.argv[1], 9002)
> <           am = tos.AM(s)
> <       except:
> <           print "ERROR: Unable to initialize network port connection to", sys.argv[1]
> <           sys.exit(-1)
> <     else:
> <       try:
> <           s = tos.Serial(sys.argv[1], baudrate, flush=True, debug=False)
> <           am = tos.AM(s)
> <       except:
> <           print "ERROR: Unable to initialize serial port connection to", sys.argv[1]
> <           sys.exit(-1)
> ---
>>         try:
>>             baudrate = int(sys.argv[2])
>>         except:
>>             print "ERROR: Wrong baudrate"
>>             sys.exit(-1)
>>
>>     # Initializes serial port communication
>>     try:
>>         s = tos.Serial(sys.argv[1], baudrate, flush=True, debug=False)
>>         am = tos.AM(s)
>>     except:
>>         print "ERROR: Unable to initialize serial port connection to", sys.argv[1]
>>         sys.exit(-1)
>
> I hope this can be useful to the community.
>
> Vincent.
>