Some issues about uplink available or no

[sineverba]

Hi to all!
Sometimes I have issues in home with gateway, that hangs until next restart.

The nodes (several only transmitting temp/hum) seems hangs, they don't interest if I did restart or no the gateway//controller.

I would implement some check of uplink available on the sketchs, on the loop. If uplink is available, transmit, if not, recheck.

But... I don't know how to implement this check.

Can you help me with this?

My pseudocode could be:

void loop() {
    bool is_available_uplink;
    is_available_uplink = getUplinkState();
    if (is_available_uplink) {
        // do stuff
    }
}

bool getUplinkState() {

    bool is_uplink_available = false;
   
    // check here the uplink
    return is_uplink_available;

}

Thank you to all!

[mfalkvidd]

@sineverba you're probably looking for

isTransportReady()

See these threads for more details:
https://forum.mysensors.org/topic/5745/my_transport_dont_care_mode/10
https://forum.mysensors.org/topic/7298/get-status-of-connection/7
https://forum.mysensors.org/topic/4899/how-add-watchdog-to-my-sensors/4
https://forum.mysensors.org/topic/4593/battery-sensor-and-re-connecting-to-gateway/2
https://forum.mysensors.org/topic/7298/get-status-of-connection/6
https://forum.mysensors.org/topic/7723/car-aux-battery-monitor

[sineverba]

Thank you... But isTransportReady seems true also if I leave the Arduino Gateway with reset pushed forever. ONly get false when I disconnect the power from Arduino.

I'm thinking to use the receiveTime method. But, if controller (and gateway) are down, what the value returned from receivedTime?

On another words, how can I check if time is returning? Because with gateway shutdown on Serial I did not read nothing from that function (instead of time).

Thank you!