9151 doesn't respond to AT#XMQTTCFG but does respond to AT#XMQTTCON

[Joe01]

Hi all,

I've been troubleshooting my 9151 feather and have run into some issues with very specific AT commands. I'm trying to connect to an MQTT broker through AT commands over a UART interface with another processor. I've got the basics all up and running, everything responding properly and seemingly working fine. It's connected to the network as AT+CEREG returns:

+CEREG: 0,5,"3009","00037F1E",7

I've also got the basic MQTTCFG command to both write and read back my input. XMQTTCON though isn't visibly doing anything apart from returning a generic "ERROR," even with CMEE set to 1. 
CGAT also returns 1. Any help would be appreciated, and happy to put more detailed logs in/run things if it would be of use.
Thanks,

Joe

[Øyvind]

Hello Joe, 

What exactly does #XMQTTCFG return in your case? This command allows you to configure the MQTT client before connecting to a broker, and will return only OK. Can you please provide a full log from your side?

Kind regards,
Øyvind

[Joe01]

Hi, AT#XMQTTCFG returns OK on submit, but when polled, (AT#XMQTTCFG?) gives the correct name and setup. AT#XMQTTCON just returns ERROR. Here's a brief log below with echo enabled. 

AT%XAPNSTATUS?

%XAPNSTATUS: 

OK

AT%XAPNSTATUS=1,"infisim.iot"

OK

AT#MQTTCFG?

+CME ERROR: 0

AT#XMQTTCFG?

#XMQTTCFG: "KuiperDevelopmentBoard",60,1

OK

AT#XMQTTCON?

#XMQTTCON: 0

OK

AT#XMQTTCON=1,"","","tcp://test.mosquitto.org",1833

ERROR

AT#XMQTTCON=1

ERROR

[Øyvind]

What version of the Serial Modem are you running on your device?

Joe01 said:

AT#XMQTTCON=1,"","","tcp://test.mosquitto.org",1833

This seems to be the culprit. The URL should be test.mosquitto,org i.e AT#XMQTTCON=1,"","","test.mosquitto.org",1833

Let me know how that works for you

Kind regards,

Øyvind

[Joe01]

Sweet that seems to have fixed it. I appreciate the help. 

[Øyvind]

Happy to help! Let us know if there are any other issues. Good luck testing it further

Kind regards,
Øyvind