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  3. Help getting started with MQTT gateway

Help getting started with MQTT gateway

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  • hekH Offline
    hekH Offline
    hek
    Admin
    wrote on last edited by
    #8

    The node uses id 255 temporarily while asking for an id.

    It's automatic if you're controller supports it. But as this mqtt topic layout is quite new, I doubt many controllers support it.

    The previous (1.5) MQTT gateway did some handouting on its own which wasn't optimal (stored last used id in EEPROM resulting in no control/reuse of ids).

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    • S Offline
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      Samuel235
      Hardware Contributor
      wrote on last edited by
      #9

      Ahhh right okay, well this is what i kept reading in 'MyConfig.h':

      // Node id defaults to AUTO (tries to fetch id from controller)
      #ifndef MY_NODE_ID
      #define MY_NODE_ID AUTO
      #endif
      

      However, i shall manually set the ID on my nodes now.

      I have put '#define MY_NODE_ID 42' into the humidity sketch, that isn't working, is there a specific place it needs to be? I'm just looking through the config files to see where about in the sendMessage code it calls for it and how it calls for it. I've tried to comment those lines out so it doesn't even attempt to get a ID from the controller, that isn't working at the moment.

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      • hekH Offline
        hekH Offline
        hek
        Admin
        wrote on last edited by
        #10

        @samuel235 said:

        is there a specific place it needs to be?

        Add it before the inclusion of MySensor.h

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        • S Offline
          S Offline
          Samuel235
          Hardware Contributor
          wrote on last edited by
          #11

          I tried what you advised but it wasn't asigning a ID to the node still. So after a little looking around i found that you can specify the node id within gw.begin().

          So i have got it as gw.begin(NULL, 4, false).

          While i understand that the second piece of data is the node id, and the third is whether or not it goes into sleep mode. What is the first? Also, with me calling false for the sleep mode and then at the end of the sketch it tells the node to sleep for 30 seconds, am i over riding that sleep mode that i call at the end?

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          • hekH Offline
            hekH Offline
            hek
            Admin
            wrote on last edited by
            #12

            Ah.. you're running mixed library versions on node/gateway.. Yes, then you'd need to call gw.begin() on the node.

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            • hekH hek

              Ah.. you're running mixed library versions on node/gateway.. Yes, then you'd need to call gw.begin() on the node.

              S Offline
              S Offline
              Samuel235
              Hardware Contributor
              wrote on last edited by
              #13

              But will this overwrite any config/settings like sleep or anything? What does the NULL mean at the start of gw.begin?

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              • hekH Offline
                hekH Offline
                hek
                Admin
                wrote on last edited by
                #14

                I'm splitting this discussion to a new topic.

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                • hekH Offline
                  hekH Offline
                  hek
                  Admin
                  wrote on last edited by
                  #15

                  The 1.5 API/begin() is documented here:
                  http://www.mysensors.org/download/sensor_api_15#the-full-api

                  First argument is callback-function used if you're interested in incoming data. NULL won't overwrite any configuration.

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                    Samuel235
                    Hardware Contributor
                    wrote on last edited by
                    #16

                    I'm sorry, i got confused about which version i was running. I thought it was the development humidity sketch and therefor i didn't look for the API of it. Makes sense now. Thank you.

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                    • S Offline
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                      Samuel235
                      Hardware Contributor
                      wrote on last edited by Samuel235
                      #17

                      I now have my controller, broker and gateway setup working fine. I then created a temp and humidity sensor, works fine. I then made a motion node, works fine. Then a light switch node that all work perfectly fine together. Now, i come to configure my relay module (which im struggling with getting it to receive the messages) so i open my serial monitor for the gateway and see that even though its got a solid connection, it keeps trying to make another MQTT connection. Over and over again....

                      0;0;3;0;9;Attempting MQTT connection...
                      0;0;3;0;9;MQTT connected
                      0;0;3;0;9;Attempting MQTT connection...
                      0;0;3;0;9;MQTT connected
                      0;0;3;0;9;Attempting MQTT connection...
                      0;0;3;0;9;MQTT connected
                      0;0;3;0;9;Attempting MQTT connection...
                      0;0;3;0;9;MQTT connected
                      0;0;3;0;9;Attempting MQTT connection...
                      0;0;3;0;9;MQTT connected
                      

                      There is nothing in the loop section of the sketch, so all i can assume is that it keeps dropping its connection to mosquitto broker thats wired over ethernet?

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                      • hekH Offline
                        hekH Offline
                        hek
                        Admin
                        wrote on last edited by
                        #18

                        Strange.. And the log on the relay node?

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                        • hekH hek

                          Strange.. And the log on the relay node?

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                          Samuel235
                          Hardware Contributor
                          wrote on last edited by
                          #19
                          This post is deleted!
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                            Samuel235
                            Hardware Contributor
                            wrote on last edited by Samuel235
                            #20
                            send: 4-4-0-0 s=255,c=0,t=18,pt=0,l=5,sg=0,st=fail:1.5.1
                            send: 4-4-0-0 s=255,c=3,t=6,pt=1,l=1,sg=0,st=fail:0
                            repeater started, id=4, parent=0, distance=1
                            send: 4-4-0-0 s=255,c=3,t=11,pt=0,l=5,sg=0,st=fail:Relay
                            send: 4-4-0-0 s=255,c=3,t=12,pt=0,l=3,sg=0,st=fail:1.0
                            send: 4-4-0-0 s=1,c=0,t=3,pt=0,l=0,sg=0,st=fail:
                            
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                              Samuel235
                              Hardware Contributor
                              wrote on last edited by Samuel235
                              #21

                              Just to let you know (Not sure if it tells you that i have edited a post), i have removed what i said about the gateway not working, that is back online now, however its back to doing exactly what it was doing earlier and keep trying to connect. But literally its spamming at a rate of like 10/20 per second...

                              0;0;3;0;9;Attempting MQTT connection...
                              0;0;3;0;9;MQTT connected
                              0;0;3;0;9;Attempting MQTT connection...
                              0;0;3;0;9;MQTT connected
                              

                              I have a weird feeling that there may be a power issue or a connection issue somewhere on this gateway. (Its in a cupboard since i got it working this morning so its a little hard for me to believe it).

                              I have tried a restart on the MQTT broker btw, still nothing.

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                                Samuel235
                                Hardware Contributor
                                wrote on last edited by
                                #22

                                I now feel like a very big silly idiot. Let this be a lesson to anyone thats developing any sort of project. Document everything in some way, pen and paper or in a file.

                                I had refreshed the sketch and used the same clientID as the raspberrypi was using when i had my old automation server running there.

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