Does "If MQTT#Connected" exist ?

[johndoe39274]

Hey,

I'd like to perform an action on the condition that ESPeasy is connected to my MQTT broker. In the examples there's an on..do statement for this, but is there a way to use this in an If statement?

So instead of:

Code: Select all

on MQTT#Connected do
 Publish,%sysname%/status,First message!
endon

Do this:

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on mcp#17 do        // PA0 pin change 
 if MQTT#Connected
  Publish,%sysname%/status,First message!
 endif
endon

Thanks in advance!

[Ath]

There is a system variable that returns the state of the MQTT connection.
This should work:

Code: Select all

on mcp#17 do        // PA0 pin change 
 if %ismqtt%=1
  Publish,"%sysname%/status,PA0 pin message!"
 endif
endon

[johndoe39274]

That sure works, thanks!

My working code is:

Code: Select all

on mcp#17 do        // PA0 pin change 
 if [plugin#mcp#pinstate#17]=0 and %ismqtt%=0       //button pressed and MQTT not connected
  MCPLongPulse_mS,1,1,20       // Pulse LED for 20 milliseconds (LongPulse_mS,<GPIO>,<state>,<duration>)
 endif
endon

In the meantime I found a nice overview of system variables in ESPeasy. Log onto the web interface of your ESPeasy node and go to the Tools menu. There's a button System Variables that conveniently shows all system variables, constants, special characters and standard conversions that you can use in your Rules code.