Hi Jeff, On Tuesday 21 October 2014 01:40:46 Jeff Chua wrote: > On Mon, Oct 20, 2014 at 11:59 PM, Marcel Holtmann <marcel@xxxxxxxxxxxx> wrote: > >> But on older bluez-5.21, the PSCAN and ISCAN are enabled automatically. > > > > this is intentionally. Starting with BlueZ 5.23 and Linux 3.17, the Page > > Scan state is controlled by the kernel. If you have no devices paired / > > configured, then it will just disable Page Scan. If you do not know about > > devices, then there is also no point in allowing anybody to connect. > > > > You can use the management command Add Device to add BR/EDR devices. If > > you add at least one device, then Page Scan will be enabled automatically > > by the kernel. If you want to be always connectable, then you can set the > > device manually connectable. > > > > Using bluetoothctl does exactly the right thing. For being discoverable, > > you need to be connectable and discoverable. So Page Scan and Inquiry > > Scan enabled. However if you do not have any paired devices and turn > > discoverable back off, then both will be disabled. > > > > Just try it. Pair with a device and see that Page Scan gets turn on > > magically. > Marcel, > > Excellent info that would have taken me a long time to find out! > Thanks for sharing! > > I tried ... > > # btmgmt add-device -t BR/EDR -a 1 F4:B7:E2:E9:54:68 > hci0: Type: BR/EDR Bus: USB > BD Address: F4:B7:E2:E9:54:68 ACL MTU: 1021:8 SCO MTU: 64:1 > UP RUNNING PSCAN > > I don't know what the actions are supposed to do, but "-a 1" works. > > Next I tried "connectable" but "info" still didn't show the > connectable and hciconfig didn't show ISCAN. > > # btmgmt connectable F4:B7:E2:E9:54:68 > hci0 Set Connectable complete, settings: powered bondable ssp br/edr le Proper syntax for this would be: btmgmt -i hci0 connectable on > # btmgmt info > hci0: addr F4:B7:E2:E9:54:68 version 6 manufacturer 15 class 0x000000 > supported settings: powered connectable fast-connectable > discoverable bondable link-security ssp br/edr hs le advertising > debug-keys privacy configuration > current settings: powered bondable ssp br/edr le > > But if I use bluetoothctl "discoverable on", ISCAN showed up on hciconfig. > > And one last thing ... if I put btmgmt in a script and run it right up > hciconfig hci0 up, the command would not work. A minimum of "sleep 1" > is required. > > So, what's the best way to set the device to be always discoverable? > And I need this because the "server" needs to be discoverable by the > Intermec scanners. The scanner would scan a "server barcode" to > connect to the server. And this was the default behavior on > bluez-5.21. > > > Thanks, > Jeff. > -- > To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" > in the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Szymon K. Janc szymon.janc@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
