AtomDTU NB-IoT

[felmue]

Hello @Felix22

hmm, that's a tricky one. Now that your modem gets an IP address; have you tried the official MQTT blocks?

Thanks
Felix

[Felix22]

you mean the blocks at "Fortgeschritten" / MQTT ?
over there it connects over Wlan/Wifi...
Is there a MQTT-Block how i can say the RX and TX pin ?

[felmue]

Hello @Felix22

no, I meant in UIFlow1 with M5Atom selected. Then it's under Base - DTU - NB-IoT - MQTT. There even is an MQTT example.

Thanks
Felix

[Felix22]

this hangs by the "Init NB-IoT DTU" Blockly if you have not Load the Unit NB-IoT.
But with the NB-IoT-Unit and the correct RX/TX Pin's it works fine.

Do you also use the Atom DTU NB-IoT ?

[felmue]

Hello @Felix22

not exactly; I use an C-Back NB-loT Global version (SIM7020G) which I connected to an M5Atom the same way it is connected in the AtomDTU NB-IoT.

And no, I do not need to add the NB-IoT unit for the Init NB-IoT DTU block to work.

Thanks
Felix

[felmue]

Hello @Felix22

I have successfully connected, subscribed and published to the following free MQTT brokers: mqtt.m5stack.com, broker.mqtt.cool, test.mosquitto.org, broker.hivemq.com, broker.emqx.io, and public.mqttserver.eu using below UIFlow:

Thanks
Felix

[Felix22]

Do you have a list with the Status Codes ?
Signal Qualität: 16
MQTT-Connection: 0
Network-Registration: 7
GPRS network registration

[felmue]

Hello @Felix22

sure, here you are:

• Signal Quality: 17
• MQTT-Connection: 0
• Network Registration: 7
• GPRS Network Registration: 5

and when connected to MQTT broker

• MQTT-Connection: 1

Thanks
Felix

[Felix22]

Hello Felix
By the error code I meant what the individual numbers mean.
Each code 0 to x
Do you have a code list ?
Greeting
Felix

[felmue]

Hello @Felix22

no, sorry, I don't have such a list. But if the error code is from an AT command you should be able to find its meaning from the AT command document linked on the product page.

Thanks
Felix