Callback not defined in scope

[mcirkovic]

Hi all, trying to compile the ethernet gateway arduino sketch and when I try, I get an error saying...


gateway_ethernet:28: error: 'callback' was not declared in this scope



PubSubClient client(server, 1883, callback, ethClient);



^



exit status 1

'callback' was not declared in this scope


Anyone else run into this? Thanks!

[greginkansas]

Have you installed the PubSubClient lib?

[papa]

       welcome, mcirkovic. At least two things could cause the "not declared" error.

1) You may be using an older version of the Gateway sketch that does not fully work with recent Arduino IDE versions.
     Try downloading, customizing, & compiling this Gateway version: homeautomation.proboards.com/attachment/download/512

                    OR

2) As greginkansas suggested, you may not have installed the PubSubClient library.
     If so, in the gateway sketch, near the code #include PubSubClient.h, find the link for downloading that library.
        Then install the library in the Arduino IDE via its menu:
            Sketch/Include Library/Add .Zip Library  (navigate to where you saved the file)