MQTT protocol not supported by this firmware error

[e4d]

Hello, I try to send MQTT message to a broker but I keep getting :

Error: M586.4: MQTT protocol not supported by this firmware

My configuration is Duet 2 Wifi running :

Duet 2 WiFi 2WiFi 3.5.0-rc.1
Duet WiFi Server n/a 2.1beta4
Duet Web Control DWC 3.5.0-rc.1

If I understand correctly I meet the requirements of M586 :

Supported from firmware version 3.5, on Duet WiFi boards in standalone mode. Requires the WiFi interface to be running WiFi server version 2.1 or later.

How can I solve this problem ? THanks

[dc42]

@e4d I've asked the developer of the MQTT support to look at your post.

[gloomyandy]

@dc42 @e4d SUPPORT_MQTT does not seem to be defined for the Duet 2 builds I'm not sure if that is deliberate (due to lack of memory/resources) or an error.

[dc42]

@gloomyandy thanks. The reason is almost certainly insufficient RAM and flash memory on Duet 2. The MQTT support requires significant amounts of both.

I have updated the M586.4 documentation.