Publishing in Module 4 Assignment - _queue.Empty

[chasedamagician]

Hello, I am currently working on the Module 4 Assignmnet and I am having some difficulties publishing the dictionary and results. Whenever I test the programs I get the following errors:

"FAILED microcontroller_client_test.py::test_send_and_receive - _queue.Empty: Did not receive any data on topic adamant-ferret/as7341 after publishing to adamant-ferret/neopixel. 

FAILED orchestrator_client_test.py::test_orchestrator_client - Exception: results.json and payload_dicts.json not found within 30 s. Number of commands received so far: 0."

currently I am publishing the payload_dictionary and results as .json strings, I believe the issue is due to how I publish the strings:

"results_str = json.dumps(payload_dict)
   client.publish(command_topic, results_str, qos = 2, retain = False) "

and

"dict_str = json.dumps(formatted_dict)
 client.publish(sensor_data_topic, dict_str, qos=2, retain=False)"

Thank you for your time.

[sgbaird]

I think you also mentioned that you are seeing the messages on the HiveMQ broker. Do you see any different output on the microcontroller when you're running it?

[chasedamagician]

When I do so, I get the following error:
File "/workspaces/4-hardware-software-communication-chasedamagician/orchestrator_client.py", line 123, in <module> results_dict = run_experiment(client, queue, neopixel_topic, payload_dict) File "/workspaces/4-hardware-software-communication-chasedamagician/orchestrator_client.py", line 95, in run_experiment raise Empty(

and when I check the broker I do not get an output from course_id/as7341 so I suspect that the issue is coming from the microcontroller_client program, but I am not completely sure, do you have any suggestions? Thank you

[sgbaird]

I'm not seeing any implementation for messages. Are these the most recent changes?

https://github.com/ACC-HelloWorld/4-hardware-software-communication-chasedamagician/blob/main/microcontroller_client.py#L112

[sgbaird]

I see your recent changes now. Thanks! Can you try this with the default HiveMQ credentials? (the public, test broker). Nothing jumps out at me that's immediately obvious.

EDIT: @chasedamagician could you comment how you resolved the issue?

[chasedamagician]

Yes, one of the main issues was that I was not careful of what QOS I used for the sensor_data_topic used by the microcontroller, I was using QOS 2 but for the Raspberry Pico I should have been using QOS 0 or 1, I also used the await function when I published the dictionary so the program would wait for the publish command before proceeding.