Hi Luiz, Do you have any idea about this issue? Best wishes Yunhan On Sun, Aug 6, 2017 at 1:25 AM, Yunhan Wang <yunhanw@xxxxxxxxxxxx> wrote: > Hi > > Has any one been able to send notification from LE peripheral to LE > central using bluetoothctl? > > Now I am trying to update "Value" with 0x02 for the below > characteristic with read and indicate flag, i am expecting a > notification can be sent from peripheral to central automatically. It > seems there is no such support in bluetoothctl. Then I do simple code > change on below, and try to update value via "update-chrc 0x02", well, > the value has been successfully updated, but there is no > message/notification sent from peripheral to central automatically. I > have confirmed that chrc read from central is showing updated value, > 02, correctly. The question is that how can we send characteristic > notification/indication using bluez dbus API? > > btw, I see the video(BlueZ Meets Zephyr made by Luiz) > https://www.youtube.com/watch?v=SdmZX5q-XDg > In 30:05, I see Zephyr is sending notification to bluetoothctl > automatically. How can we just use bluez dbus API to achieve this? > > for example, > In LE peripheral: > I setup the below characteristic with read and indicate flag > register-service 00001820-0000-1000-8000-00805f9b34fb > register-characteristic 00002a06-0000-1000-8000-00805f9b34fb read,indicate > register-application > advertise peripheral > > In LE central: > connect 00:AA:01:00:00:23 > select-attribute /org/bluez/hci1/dev_00_AA_01_00_00_23/service000a/char000b > notify on > > The code change snippet > --- a/client/gatt.c > +++ b/client/gatt.c > -void gatt_register_chrc(DBusConnection *conn, GDBusProxy *proxy, wordexp_t *w) > +void chrc_set_value1(const char *input, void *user_data, DBusConnection *conn) > +{ > + struct chrc *chrc = user_data; > + > + g_free(chrc->value); > + > + chrc->value = str2bytearray((char *) input, &chrc->value_len); > + g_dbus_emit_property_changed(conn, chrc->path, > "org.bluez.GattCharacteristic1", "Value"); > + > +} > +struct chrc * gatt_register_chrc(DBusConnection *conn, GDBusProxy > *proxy, wordexp_t *w) > { > struct service *service; > struct chrc *chrc; > @@ -1489,6 +1500,8 @@ void gatt_register_chrc(DBusConnection *conn, > GDBusProxy *proxy, wordexp_t *w) > print_chrc(chrc, COLORED_NEW); > > rl_prompt_input(chrc->path, "Enter value:", chrc_set_value, chrc); > + > + return chrc; > } > > --- a/client/main.c > +++ b/client/main.c > +static void cmd_update_chrc(const char *arg) > +{ > + chrc_set_value1(arg, default_chrc, dbus_conn); > + > +} > + > static void cmd_unregister_characteristic(const char *arg) > { > wordexp_t w; > @@ -2541,6 +2547,9 @@ static const struct { > { "register-characteristic", "<UUID> <Flags=read,write,notify...>", > cmd_register_characteristic, > "Register application characteristic" }, > + { "update-chrc", "<value.>", > + cmd_update_chrc, > + "update chrc value" }, > > Thanks > Best wishes > Yunhan -- 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
