My employer has made a custom board with an HL7812 on it, intending to use it for MQTT and IOT applications. I need to learn how to control it. I have the AT Command reference manual, but alone, it’s meaningless. I’ve seen the Open AT documentation. That’s not what I need. The firmware will be …

You can see here [image] Setting up MQTT with the HL78 & AT commands HL78 Omg thank you so much! i forget setting the APN and getting the IP i think! I got it working! [image]

That wasn’t very helpful. It shows four AT commands that result in retrieving some data through MQTT. It doesn’t show how to publish anything, or what commands are required before those four commands, or explain what they are doing, or tell me what to do when the modem returns an error, which it i…

you can see below which is tested in Release 5 (will be released soon): at+kmqttcfg=1,1,"test.mosquitto.org",8883,3,"HL78xx" +KMQTTCFG: 1 OK at+kmqttcnx=1 +KMQTTCNX: 1 OK +KMQTT_IND: 1,1 at+kmqttsub=1,1"HL",2 +CME ERROR: 3 at+kmqttsub=1,"HL",2 +KMQTTSUB: 1 OK +KMQTT_IND: 1,2 at+kmqttpubs…

Where do I start? How do I use this thing? Where are tutorials?

IoT Modules

jyijyi October 1, 2024, 1:31pm 2

You can see here

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Where do I start? How do I use this thing? Where are tutorials?

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