I would try to monitor the length of the output queue. See _io_thread_func in MQTTMsgHandler.py - in there there's the transmit loop and you could add some signaling there to indicate the TX queue is empty. You'll probably need to modify the code and rename the function so you are not using the builtin frozen ones.

@martinnn said in frozen AWS MQTT: @robertkeizer What do you mean by 'relative path'? The import statement is from MQTTLib import AWSIoTMQTTClient How do you point this to another source? I added my own copy of the library in the directory AWSIoTPythonSDK, and then was able to use from AWSIoTPythonSDK.MQTTLib import AWSIoTMQTTShadowClient or similar. Effectively just add your own copy of the library and then use a from xx import ; As long as you don't use the exact same name as the default one, and the directory exists in /lib you should be able to use another version.

Hello again, Have found that the entire code is correct and works perfectly. Issue was at configuration AWS Thing, Policy, Certificate side. The tutorial followed to fix the problem is this: https://docs.aws.amazon.com/iot/latest/developerguide/iot-gs.html

@reidfo Sure looks like it. Change line 294, see if you get a different behavior. http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html#_Toc385349238 https://github.com/pycom/pycom-micropython-sigfox/blob/f517b1df5083ddc158c075852d7f2497480b0d84/esp32/frozen/Common/MQTTClient.py#L294

... forgot duplicate CLIENT_ID in config.py... Problem solved!

Hey @timh , I have mentioned about the sensor, I am going to use for monitoring and I want to use cellular service, as wifi connection is not available here so not sure about which hardware will be better to use and if I try with GPY then need to know the better way to connect the Private network with GPY which help readings of sensor on AWS cloud And I am new comer to this area so please suggest the tools of AWS cloud which I should use to make this monitoring process display on my smart phone.

@jmarcelino Hi, I used a WiPy 3.0.