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October 31, 2009

HOWTO: Use PyS60’s Bluetooth Console on Fedora/Ubuntu/Debian Linux

Filed under: Blog — admin @ 11:03 pm

While developing PyS60 apps is one of the most fun things you could do with your Nokia phone, debugging them isn’t as zippy as one would hope for in a Py development environment. To make up for that, PyS60 gives the developers an option for directly connecting to the interpreter through Bluetooth. Doesn’t sound very appealing? How about this: You connect your laptop with the cellphone, jump in at some place in the code while your app is executing and then use lappy’s big keyboard for exploiting different code and values in the interpreter. Sounds better?

To accomplish this on a Linux distro, you will need the following packages installed on your system:

Name Links
gnome-bluetooth
uucp/cu

After making sure that both are present on your system, install PyS60 on your phone if you haven’t already done so.

Now the fun part:

  1. Switch on Bluetooth in the cellphone.

    PyS60 Bluetooth HOWTO, Mobile screenshot #1

  2. Launch bluetooth-properties and click on “Setup New Device”.

    PyS60 Bluetooth HOWTO, PC screenshot #1

  3. Select your cellphone.

    PyS60 Bluetooth HOWTO, PC screenshot #2

  4. You will be shown a pin.

    PyS60 Bluetooth HOWTO, PC screenshot #3

  5. Enter the pin when queried on the cellphone.

    PyS60 Bluetooth HOWTO, Mobile screenshot #2

  6. The phone should be successfully paired.

    PyS60 Bluetooth HOWTO, PC screenshot #4

  7. Authorize your Linux system to make automatic connections to the phone.

    PyS60 Bluetooth HOWTO, Mobile screenshot #3

  8. As root, run this shell script:
    [root@orthanc ~]# ./rfcomm-listen.sh

    Serial Port service registered
    Waiting for connection on channel 2

  9. Launch PyS60 interpreter and select “Bluetooth Console” from the application menu.

    PyS60 Bluetooth HOWTO, Mobile screenshot #4

  10. Select your Linux machine.

    PyS60 Bluetooth HOWTO, Mobile screenshot #5

    The command you ran in previous step should have new output:

    [root@orthanc ~]# ./rfcomm-listen.sh

    Serial Port service registered
    Waiting for connection on channel 2
    Connection from 00:17:4B:B6:35:31 to /dev/rfcomm0
    Press CTRL-C for hangup

    The cellphone screen should be showing something like this:

    PyS60 Bluetooth HOWTO, Mobile screenshot #6

  11. As root again, open a new terminal and run:
    [root@orthanc ~]# cu -l /dev/rfcomm0

    Connected.

  12. Hit Enter till prompt (>>>) appears, then type:

    >>> import appuifw
    >>> appuifw.query(u'Hello World', 'text')

  13. Viola, you should have an input box on the mobile screen:

    PyS60 Bluetooth HOWTO, Mobile screenshot #7

  14. Enter any text and press the OK key. It should be show up in the terminal you were using to type in code:

    >>> import appuifw
    >>> appuifw.query(u'Hello World', 'text')
    u’Finally’

  15. Exit the interpreter by typing CTRL+D on an empty line:

    >>> import appuifw
    >>> appuifw.query(u'Hello World', 'text')
    u’Finally’
    >>>
    Interactive interpreter finished.
    cu: Got hangup signal

    Disconnected.

Pat yourself on the back. Now, you can use your Bluetooth console to import your modules, execute some stuff and then jump in the middle to test some extra lines or values. In fact, I found it to be a pretty darned good way of learning about PyS60’s API. Res secundae!

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4 Comments »

  1. Kamran bhai pls tell me that what is the compiler of ‘C++’ on Fedora 11. I have fedora 11.
    (for the Object Orientation).

    Pls if u have the latest version of the Compiler of C++ in Fedora. pls do Forward at awais.khalid.awan@gmail.com or either share a link on internet.

    One more thing. From Where u got this domain ‘inspirated.com’.???

    Comment by Awais — October 31, 2009 @ 11:20 pm

  2. Kamran bhai i also need to know what is this g++ is it c++ misspelled???
    if it is different then plz mail me at my e-mail address.

    Comment by Saad — November 1, 2009 @ 12:34 am

  3. @Awais: Most Linux distributions use g++ as the C++ compiler. To install on Fedora 11, do yum install gcc-c++. The domain was bought from nexus.net.pk, I’m going to migrate my webhost soon though.

    @Saad: Bohot shughali ho gia hai :P .

    Comment by krkhan — November 1, 2009 @ 10:34 am

  4. […] How about this: You connect your laptop with the cellphone, jump in at some place in the code while your app is executing and then use lappy’s big keyboard for exploiting different code and values in the interpreter. Sounds better? More here […]

    Pingback by Use PyS60’s Bluetooth Console on Fedora/Ubuntu/Debian Linux | Debian-News.net - Your one stop for news about Debian — November 2, 2009 @ 11:52 pm

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