Re: [Bluez-users] rfcomm question 3

[Ka Kin Cheung <michaelhku2002@yahoo.com.hk>]

Hi Marco!
   I think it is a need to explain the whole things
here so that you can understand.
   My purpose of my project is to use bluetooth mobile
devices (now are T610 and iPAQ 3970, where iPAQ is
running on Windows CE 3.0) to act as remote control on
IR devices (now is doing for AV devices such as TV,
CD, VCD, DVD and VCR). The OS used is Linux, and the
main programming language is C. At first, I connected
PC to T610, and it successed and the remote control on
AV devices using T610 was also successful. But my
supervisor said that the approach should be that the
PC act as server, so that the connection from
bluetooth mobile device to PC is needed. Then I tried
hard to find out how the T610 can connect to PC. Now
T610 can search my PC and then add in the "My device"
list. But when I looked at the "Service list", the
"Local service cannot found" statement was shown.
Then, my tutor said that sdp (service discovery
protocol) is needed for T610. So, my work is now
mainly on how to do for sdp so that the T610 can
connect to PC. If this is successful, then the next
thing that I have to do is to  connect the iPAQ
running on Windows CE to the PC to access my main
program that runs on Linux. 
    Regarding to your questions and comments in the
prevoius mail:
1.>> My expect is to see if my phone can connect to
mobile phone,
  >I assume you mean if your phone can connect to the
pc.
  >How do you wanna see this? What behavior do you
excactly expect?
  Your assumption is correct, and then after I can see
the address of T610, what I wish to see is the menu
can be sent throught AT command to the phone and then
try to do the remote control using T610.
2.>> But unfortunately, nothing to see because I can't
find an option   >>on T610 that can connect to PC even
though I put the PC into "My >>device" list.
>As I said, you need to programm this yourself (and
install it on your
>mobile phone)...
   The main point is, as the menu for my program can
be sent to T610 using AT command and the C main
program on the Linux PC can get my choice from T610
and then do the corresponding things, I wish to know
why an extra program is needed to write and then
install on my phone? And is there any contradiction
with sdp?
3. >how should I know what he needed the sdp for?
Actually you should >explain us what he needed the sdp
for.
    The situation is when I connect from PC to T610,
the "accessories" i.e. the menu that I wish to use is
sent through AT command to the phone, and then I can
use. When I check the "service list", I see "object
push" in the list. But then when I change the
connection approach that from T610 to PC, no service
can be found in the "Service list". Then my tutor said
the sdp is needed for T610 so that the service on the
PC can be found and then the connection from T610 to
PC can be done.
    By the way, my tutor is Hong Kong people, and you
may not know him.
4.>>>you've to write a client program for that runs on
the mobile >>>phone. if i remember right, the T610
hasn't support for jsr82. I >>>don't know if you're
able to do c programming on it and have access >>>to
the bluetooth system. i use a nokia 6230, there you
have mdip2.0 and jsr83. so it's no problem at all...
>>Thx for suggestion.
>that wasn't a suggestion. you have to do this!
But the problem is, my project can only use T610 and
iPAq at this instant, and the language used for this
project is C. So, is there any other alternative that
can do the thing same as that you said before?

    Here are the things that I concern now:
1. How to do for sdp so that the mobile devices can
connect to PC (and the main point is, this can be done
when I run my main program)
2. As my iPAq is running on Windows CE and the program
used on it will be written in Visual eMbedded C++, but
AT command is used for T610, so how can I solve this
"contradiction" and that the choice from my iPAQ can
be known by my main program?
    I do hope that you can understand what I face now.
Thank you very much.
Michael

_______________________________________________________________________
新年願望第一位 : 找到友緣人
http://personals.yahoo.com.hk


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