[art_1979]

Hi

I am developing a client server application where mobile devices communicates with the server (PC) with the help of bluetooth.

I am using bluecove JSR-82 implementation over Microsoft bluetooth implementation on WinXP SP2.

I have difficulties with understanding programming aspects of the bluetooth technology.

There are 1 master device and up to 7 slaves devices which form piconet. Each device can be in active or several passive modes.

There is RFCOMM protocol which supports multiplexing.
RFCOMM supports up to 30 channels. As I understand RFCOMM channel is something like TCP port in TCP/IP.

I do not understand how many devices can connect to my PC via one RFCOMM channel?

Seven? Or many but only 7 can transmit data to it?

[mahbub_s60]

Hi,

RFCOMM provides emulation of RS232 serial ports over the L2CAP protocol.The RFCOMM protocol supports up to 60 simultaneous connections between two BT devices.

Server applications (other end BT Device) registering with an RFCOMM service interface are assigned a Server Channel number in the range 1…30 (Channel).

Active Member 3 bit number (7 in decimal) so 7 can take part in the piconet as active member.

Bluetooth socket is TCP/IP like socket.
There is good example in forum Nokia that may help you.
http://www.forum.nokia.com/info/sw.n...t_Example.html

[art_1979]

When the member became active or passive?
Do I need to close RFCOMM channel on client to allow others to became active members?
Or is it decision of the harware layer?