Hi Barry, Pavel, On Mon, Oct 1, 2018 at 4:53 PM Barry Byford <31baz66@xxxxxxxxx> wrote: > > There has been a discussion on the mailing previously that covered some of this. > > Is there anything in this thread that helps: > https://marc.info/?t=149208458400001&r=1&w=2 > > On Mon, 1 Oct 2018 at 11:25, Pavel Machek <pavel@xxxxxx> wrote: > > > > Hi! > > > > I'm trying to get gatt client/server to run; my ultimate goal is to > > turn Linux machine into "low-energy device", providing services > > similar to heartbeat measurement. > > > > I do have existing qt application (running on Android and PC) I'd like > > "device" to talk to. > > > > TODO says: > > > > - Add complete GATT test coverage in unit/test-gatt following the GATT > > test > > spec. This could use shared/gatt-client and shared/gatt-server at > > the same > > time to test both against each other. We should definitely have > > tests for > > gatt-server and gatt-client simultaneously on one side of the > > connection. > > > > Priority: High > > Complexity: C4 > > > > Which tells me that maybe I should consider helping with that. But so > > far I was not able to get it to work... This is unit testing with a socket pair, so I don't think it has anything to do with what follows bellow. > > I can use gatt-server and connect to it using gatttool, but depending > > on details during the server start (?) and phase of moon, either > > device is not enumerated by the QT code, or it is not detected as > > low-energy device, or no UUIDs are detected. > > > > My attempt at launching server is below (using python gatt-server, (1) > > ). I was doing "hciconfig leadv 0" manually at some point. > > > > Using hciconfig while bluetoothd is running sounds kind-of > > dangerous. Stackoverflow (2) suggests using btmgmt (3) instead, and > > things got slightly different, but did not start to work for me. Is > > there documentation how to get this to work somewhere? Have a look at bluetoothctl first, all the necessary commands are there to enable to act as peripheral: Menu advertise: Available commands: ------------------- uuids [uuid1 uuid2 ...] Set/Get advertise uuids service [uuid] [data=xx xx ...] Set/Get advertise service data manufacturer [id] [data=xx xx ...] Set/Get advertise manufacturer data data [type] [data=xx xx ...] Set/Get advertise data discoverable [on/off] Set/Get advertise discoverable discoverable-timeout [seconds] Set/Get advertise discoverable timeout tx-power [on/off] Show/Enable/Disable TX power to be advertised name [on/off/name] Configure local name to be advertised appearance [on/off/value] Configure custom appearance to be advertised duration [seconds] Set/Get advertise duration timeout [seconds] Set/Get advertise timeout clear [uuids/service/manufacturer/config-name...] Clear advertise config GATT Services can be registered with: Menu gatt: Available commands: ------------------- list-attributes [dev] List attributes select-attribute <attribute/UUID> Select attribute attribute-info [attribute/UUID] Select attribute read [offset] Read attribute value write <data=xx xx ...> [offset] Write attribute value acquire-write Acquire Write file descriptor release-write Release Write file descriptor acquire-notify Acquire Notify file descriptor release-notify Release Notify file descriptor notify <on/off> Notify attribute value register-application [UUID ...] Register profile to connect unregister-application Unregister profile register-service <UUID> Register application service. unregister-service <UUID/object> Unregister application service register-includes <UUID> Register as Included service in. unregister-includes <Service-UUID><Inc-UUID> Unregister Included service. register-characteristic <UUID> <Flags=read,write,notify...> Register application characteristic unregister-characteristic <UUID/object> Unregister application characteristic register-descriptor <UUID> <Flags=read,write...> Register application descriptor unregister-descriptor <UUID/object> Unregister application descriptor > > Thanks and best regards, > > Pavel > > > > (3) > > sudo tools/btmgmt -i hci0 power off > > sudo tools/btmgmt -i hci0 le on > > sudo tools/btmgmt -i hci0 connectable on > > sudo tools/btmgmt -i hci0 name "some friendly name" > > sudo tools/btmgmt -i hci0 advertising on > > sudo tools/btmgmt -i hci0 power on > > tools/btgatt-server -i hci0 -s low -t public -r -v No need to use btmgmt, applications should use the D-Bus API which has pretty much everything you are doing with btmgmt. > > (2) > > https://stackoverflow.com/questions/29128586/bluetooth-low-energy-in-c-using-bluez-to-create-a-gatt-server#31030321 > > > > (1) > > #!/usr/bin/python3 > > # -*- python -*- > > > > import os > > import re > > import time > > > > def pcmd(c): > > return os.popen(c).readline()[:-1] > > > > class Ble: > > def down(m): > > print("Shutting down BLEE") > > os.system("sudo killall bluetoohd") > > os.system("sudo killall gatt-server") > > os.system("sudo hciconfig hci0 down") > > > > def up(m): > > print("Starting up BLEE") > > os.system("sudo ../bluez/src/bluetoothd -d -n &") > > time.sleep(2) > > os.system("sudo ./gatt-server &") bluetoothd is already acting as a GATT server. > > time.sleep(2) > > os.system("sudo hciconfig hci0 up") > > ##os.system("../bluez/test/example-gatt-server &") > > while True: > > #os.system("sudo hciconfig hci0 leadv 0") You may want to use example-advertisement instead of calling hciconfig. > > time.sleep(5) > > > > def run(m): > > m.down() > > time.sleep(1) > > m.up() > > > > b = Ble() > > b.run() > > > > > > > > Pavel > > -- > > (english) http://www.livejournal.com/~pavelmachek > > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- Luiz Augusto von Dentz
