On Wed, Mar 9, 2011 at 5:31 PM, Tirtha Ghosh <gtirtha@xxxxxxxxx> wrote: > Hi All, > > I am really new to bluetooth s/w development. And need some idea how it > works in linux system. > > As far as I know, Bluez protocol stack is available on Linux. Bluez drivers > are already mainlined in Kernel and utilities are available for user-space. > > When we say bluez driver, what does it mean? Is it the bluetooth protocol > stack? If so, then what user-space utilities contain? generally the terminology bluez is not used in kernel. bluetooth in kernel is in 2 places, a. net/bluetooth/ - which implements the HCI, L2CAP, SCO, RFCOMM, HIDP, BNEP and few others and also implements the HCI-Core layer b. drivers/bluetooth/ - Transport specific drivers like USB, UART, SPI which interface with HCI-Core layer. > The BT chip can be connected via UART, USB or SDIO interfaces. Who > communicate with these interfaces, is it bluez kernel drivers or user-space > utilities (via sys or proc)? No, Bluetooth in Linux exposes a interface "hci0" to user-space. Like Ethernet or any other n/w interface. So, applications or other utilities in user-space do socket/bind/sendmsg/recv BSD calls on hciX interface For more questions: register to linux-bluetooth mailing lists. > Finally, I saw this BT chips can support Toshiba stack or BlueSoleil or any > other stack. Does bluez support any form of BT, regardless what protocol > stack they are using?? > Say, there is BT chip in form of USB dongle which can be connected via > regular USB port to the system. Does this dongle may need specific driver in > Linux or bluez driver can handle this dongle using normal USB drivers > available in system?? > > I am not sure if I sound clear about my doubts. A small description about > bluez architecture might clear my doubt. > I am aware of linux kernel and device driver model, so you can be specific > while describing this. > > TIA > > > _______________________________________________ > Kernelnewbies mailing list > Kernelnewbies@xxxxxxxxxxxxxxxxx > http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > > _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
