[Ovmsdev] WiFi client not switching to better AP

[Stephen Casner]

Michael,

Thanks for the suggestions.  Since I only use the WiFi when the car is
in my garage where I now have a nearby AP, I don't need to worry about
trying to keep a connection when the signal is poor so the event idea
should do the trick.

My laptop can switch from one AP to another as I move around without
dropping network connections.  So I guess it can hear other APs and
decide when to switch for a better signal.  Could the OVMS hardware
and driver allow that?

                                                        -- Steve

On Mon, 7 Dec 2020, Michael Balzer wrote:

> Steve,
>
> that's something we can control.
>
> If you don't mind frequent disconnects in poor Wifi situations, a simple
> solution now is to attach a "wifi reconnect" command call to the
> "network.wifi.sta.bad" event. I added that command on the Wifi rework some
> months ago.
>
> For a better, general solution, we could e.g. count the "network.wifi.sta.bad"
> events on the same network (or better: check the event frequency) and
> disconnect when reaching some (tunable) threshold. The next automatic scan
> then connects to the best network available. Getting stuck in the "bad signal"
> state for too long would also need to trigger a disconnect.
>
> Regards,
> Michael
>
>
> Am 07.12.20 um 07:21 schrieb Stephen Casner:
> > Many months ago I installed another AP for the home network in my
> > garage because the signal quality to the main router was too poor for
> > OVMS to operate.  Today I needed to restart the garage AP, so OVMS
> > hear the main router again and associated to it.  But even after the
> > garage AP came back up, OVMS stuck with the main router and kept
> > toggling between WiFi and modem because the signal quality was bad.
> >
> > It this behavior just a function of the WiFi driver that we can't
> > control, or is it something we could improve?
> >
> > I fixed it by "wifi mode off" then "wifi mode client".
> >
> >                                                          -- Steve
> >
> > I (513443477) netmanager: WIFI client has bad signal quality (-89.2 dBm);
> > disconnect
> > I (513443477) netmanager: Interface priority is pp2
> > (10.170.41.247/255.255.255.255 gateway 10.64.64.64)
> > I (513443477) netmanager: Set DNS#0 8.8.8.8
> > I (513443477) netmanager: Set DNS#1 8.8.4.4
> > I (513443477) netmanager: WIFI client down (with MODEM up): reconfigured for
> > MODEM priority
> > I (513443537) time: Network was reconfigured: restarting SNTP client
> > I (513443547) ovms-server-v2: Network was reconfigured: disconnect, and
> > reconnect in 10 seconds
> > I (513443547) ovms-server-v2: Status: Network was reconfigured: disconnect,
> > and reconnect in 10 seconds
> > I (513443717) ovms-server-v2: Status: Disconnected
> > I (513463467) ovms-server-v2: Connection is api.openvehicles.com:6867 US33
> > I (513463467) ovms-server-v2: Status: Connecting...
> > I (513466157) ovms-server-v2: Connection successful
> > I (513466157) ovms-server-v2: Status: Logging in...
> > ...
> > I (513522477) netmanager: WIFI client has good signal quality (-86.9 dBm);
> > connect
> > I (513522477) netmanager: Interface priority is st13
> > (192.168.1.74/255.255.255.0 gateway 192.168.1.254)
> > I (513522477) netmanager: Set DNS#0 8.8.8.8
> > I (513522477) netmanager: Set DNS#1 8.8.4.4
> > I (513522477) netmanager: WIFI client up (with MODEM up): reconfigured for
> > WIFI client priority
> > I (513522527) time: Network was reconfigured: restarting SNTP client
> > I (513522527) ovms-server-v2: Network was reconfigured: disconnect, and
> > reconnect in 10 seconds
> > I (513522527) ovms-server-v2: Status: Network was reconfigured: disconnect,
> > and reconnect in 10 seconds
> > I (513522697) ovms-server-v2: Status: Disconnected
> > I (513529477) netmanager: WIFI client has bad signal quality (-89.0 dBm);
> > disconnect
> > I (513529477) netmanager: Interface priority is pp2
> > (10.170.41.247/255.255.255.255 gateway 10.64.64.64)
> > I (513529477) netmanager: Set DNS#0 8.8.8.8
> > I (513529477) netmanager: Set DNS#1 8.8.4.4
> > I (513529477) netmanager: WIFI client down (with MODEM up): reconfigured for
> > MODEM priority
> > I (513529527) time: Network was reconfigured: restarting SNTP client
> > I (513529537) ovms-server-v2: Network was reconfigured: disconnect, and
> > reconnect in 10 seconds
> > I (513529537) ovms-server-v2: Status: Network was reconfigured: disconnect,
> > and reconnect in 10 seconds
> > I (513539467) ovms-server-v2: Connection is api.openvehicles.com:6867 US33
> > I (513539467) ovms-server-v2: Status: Connecting...
> > I (513541987) ovms-server-v2: Connection successful
> > I (513541987) ovms-server-v2: Status: Logging in...
> > _______________________________________________
> > OvmsDev mailing list
> > OvmsDev at lists.openvehicles.com
> > http://lists.openvehicles.com/mailman/listinfo/ovmsdev
>
> --
> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26