Hi everybody,
I am trying to use python sdk to communicate with Serial Forwarder. I
receive messages using "receive(self, src, msg)" as in Chad's example
and it works ok. However I found some troubles when trying to send
messages to Serial Forwarder.
I guess I should use MoteIF's "sendMsg(self, dest, addr, amType,
group, msg)" method. I have tried the following call in my class:
self.mif.sendMsg(self.source, 0, t.get_amType(), 0, t)
Where,
self.source = self.mif.addSource("[EMAIL PROTECTED]:9002")
and
t=TestSerialMsg()
t.set_counter(13)
But I get the following errors:
(32, 'Broken pipe')
File "/opt/tinyos-2.x/support/sdk/python/tinyos/message/MoteIF.py",
line 124, in sendMsg
dest.writePacket(data)
File "/opt/tinyos-2.x/support/sdk/python/tinyos/packet/SFSource.py",
line 69, in writePacket
self.prot.writePacket(packet)
File "/opt/tinyos-2.x/support/sdk/python/tinyos/packet/SFProtocol.py",
line 74, in writePacket
self.outs.write(chr(len(packet)))
File "/opt/tinyos-2.x/support/sdk/python/tinyos/packet/SocketIO.py",
line 77, in write
return self.socket.send(data)
None
What am I doing wrong? Am I using the correct method?
Thanks in advance,
Iñigo
On 9/14/07, Chad Metcalf <[EMAIL PROTECTED]> wrote:
> It should work with any of the tools (Java, C, or C++ SFs). When it comes to
> MoteIF you'll find them very similar.
>
> Using TestSerial as an example:
>
> --- Makefile ---
> COMPONENT=TestSerialAppC
> BUILD_EXTRA_DEPS += TestSerial.class TestSerialMsg.py
> CLEAN_EXTRA = *.class TestSerialMsg.java TestSerialMsg.py
>
> TestSerial.class: $(wildcard *.java) TestSerialMsg.java
> javac *.java
>
> TestSerialMsg.java:
> mig java -target=null $(CFLAGS) -java-classname=TestSerialMsg
> TestSerial
> .h test_serial_msg -o $@
>
> TestSerialMsg.py:
> mig python -target=null $(CFLAGS) -python-classname=TestSerialMsg
> TestSe
> rial.h test_serial_msg -o $@
>
> include $(MAKERULES)
> -----
>
> --- example.py ---
>
> #!/usr/bin/env python
>
> # This is a quick and dirty example of how to use the MoteIF interface in
> # Python
>
> from TestSerialMsg import *
> from tinyos.message import MoteIF
>
> class MyClass:
> def __init__(self):
> # Create a MoteIF
> self.mif = MoteIF.MoteIF()
> # Attach a source to it
> self.source = self.mif.addSource("[EMAIL PROTECTED]:9001")
>
> # SomeMessageClass.py would be generated by MIG
> self.mif.addListener(self, TestSerialMsg)
>
> # Called by the MoteIF's receive thread when a new message
> # is received
> def receive(self, src, msg):
> print "Received message: "+ str(msg)
>
> if __name__ == "__main__":
> print "Running"
> m = MyClass()
>
> ----
>
> Not terribly useful example but it works.
>
> Cheers
> Chad
>
>
> On 9/14/07, John Griessen <[EMAIL PROTECTED]> wrote:
> > Matt Welsh wrote:
> > > We've developed a Python based SDK for TinyOS, allowing you to write
> > > Python programs that talk to serialforwarder, send and receive packets,
> > > and so forth.
> >
> > Sounds great. I've been using the c++ serial forwarder. Has it been
> > tested with that yet? Does it parallel the whole java process of
> > making message classes?
> >
> > Might it be just changing .java to .py
> > in a Makefile like:
> >
> > ==========================
> > COMPONENT=ReadMoistureSensorsC
> > SENSORBOARD=a2d12ch
> >
> > BUILD_EXTRA_DEPS=MoistureSensorsMsg.class
> > MoistureSensorsMsg.class: MoistureSensorsMsg.java
> > javac MoistureSensorsMsg.java
> >
> > MoistureSensorsMsg.java:
> > mig java -target=null
> -java-classname=MoistureSensorsMsg
> > ReadMoistureSensors.h MoistureSensorsMsg -o $@
> >
> > include $(MAKERULES)
> > ===============================
> >
> > Thanks,
> >
> > John Griessen
> > --
> > Ecosensory
> > tinyOS devel on: ubuntu Linux; tinyOS v2.0.2 ; telosb ecosens1
> > _______________________________________________
> > Tinyos-help mailing list
> > Tinyos-help@Millennium.Berkeley.EDU
> >
> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
> >
>
>
>
> --
> Chad @ Home
> _______________________________________________
> Tinyos-help mailing list
> Tinyos-help@Millennium.Berkeley.EDU
> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>
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