Giter VIP home page Giter VIP logo

Comments (2)

Huong-nt avatar Huong-nt commented on July 19, 2024 1

You can get the desired shadow from AWS by publishing to the topic $aws/things/myThingName/shadow/get and subscribe topic $aws/things/myThingName/shadow/get/accepted.
When you publish a message to the topic $aws/things/myThingName/shadow/get, AWS IoT will publish a response state document to $aws/things/myThingName/shadow/get/accepted.

from aws-mqtt-websockets.

rileyschuit avatar rileyschuit commented on July 19, 2024 1

@Huong-nt This worked! Thank you so much! I will submit another pull request with an example when it functions correctly and is somewhat clean. With the example given, I modded/added:

const char* aws_topic_publish  = "$aws/things/Device1/shadow/get";
const char* aws_topic_subscribe  = "$aws/things/Device1/shadow/get/accepted";

Then modified the subscribe function like so:

//subscribe to a mqtt topic
void subscribe () {
   //subscrip to a topic
    int rc = client->subscribe(aws_topic_subscribe, MQTT::QOS0, messageArrived);
    if (rc != 0) {
      if (DEBUG_PRINT) {
        Serial.print("rc from MQTT subscribe is ");
        Serial.println(rc);
      }
      return;
    }
    if (DEBUG_PRINT) {
      Serial.println("MQTT subscribed");
    }
}

Serial output looks like:

MQTT subscribed
Message 1 arrived: qos 0, retained 0, dup 0, packetid 16383
Payload {"state":{"desired":{"on":false},"reported":{"on":false}},"metadata":{"desired":{"on":{"timestamp":1487734811}},"reported":{"on":{"timestamp":1487734811}}},"version":36,"timestamp":1487735007}

from aws-mqtt-websockets.

Related Issues (20)

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    🖖 Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. 📊📈🎉

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google ❤️ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.